In recent years, Vietnam’s beverage industry has contributed more than 10% to the national GDP, maintaining an impressive growth rate. The average annual growth of this segment is expected to reach 6.28% from 2023 to 2028.

As the demand for beverages increases, the supply chain for aluminum packaging (aluminum cans) has also expanded. Aluminum cans, in particular, have the advantage of being more recyclable than other packaging materials, aligning with businesses’ efforts toward sustainable packaging.

1. Aluminum Can Production Process

2. Challenges in Treating Aluminum Can Production Wastewater

a. Characteristics of Wastewater

The composition and characteristics of aluminum can production wastewater primarily include heavy metals, mineral oils, and organic compounds.

• Heavy metals such as aluminum, chromium, nickel, and cadmium may appear in wastewater from plating, anodizing, and protective coating processes.

• High COD and BOD levels: Organic compounds from paints, inks, and surface treatment chemicals contribute to high chemical oxygen demand (COD) and biochemical oxygen demand (BOD) levels in aluminum can production wastewater.

• High suspended solids (TSS): Suspended solids often include aluminum dust, aluminum scraps, and residual contaminants from cutting, stamping, and machining processes.

Note: The concentration ranges in the table are for reference only. Actual values may vary depending on production technology and pollution control measures at each factory.

3. Wastewater Treatment Solutions by NGO International

a. Compact Treatment System with Small Footprint

NGO International designs systems that effectively separate and pre-treat highly polluted wastewater streams, reducing the overall pollution load. This approach optimizes reaction tank volumes and minimizes construction space.

b. Cost-Optimized Investment

With extensive expertise in wastewater characteristics and contaminants, NGO International optimizes designs using 100% locally manufactured equipment in Vietnam, reducing investment costs.

c. Wastewater Recycling & Reuse

Currently, treated wastewater meets QCVN 40:2025/BTNMT standards and is discharged into the environment. However, as environmental concerns grow and clean water becomes scarcer, simply meeting discharge standards is no longer the most economical or effective solution for modern industries. In line with sustainable development trends, wastewater reuse is becoming a strategic approach.

Instead of wasting valuable resources, treated wastewater can be recycled for production, aiming toward a zero-discharge factory model.

Businesses interested in wastewater treatment solutions for aluminum can production can contact NGO International at +84 24 7300 0890 or email office@8ngo.com for direct consultation.

See more at:

https://ngoenvironment.com/en/wastewater-treatment-tec29-physical-and-chemical-wastewater-treatment-methods-d55.html

https://shopngoenvironment.com/en/product-category/industrial-products/flotation-equipment/

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This website is copyrighted by NGO International Co., Ltd. Any use or reproduction of part or all of the content in any form is strictly prohibited, except with explicit written permission from us.

Vietnam’s coffee industry is facing a dual opportunity and challenge. The opportunity comes from a global market that increasingly favors high-quality products with sustainability certifications. The challenge arises from the production process itself—a process that consumes a vast amount of water and generates one of the most “difficult-to-treat” types of wastewater streams.

Are you struggling with:

• Operating costs for your wastewater treatment system being too high, eroding your profits?
• Your current system operating unstably, frequently encountering issues and causing legal risks?
• Valuable land for production having to be allocated for bulky treatment tanks?
• Increasing pressure from international partners regarding green standards (Rainforest Alliance, Fair Trade)?

If the answer is “Yes,” you are not alone. At NGO International, we turn these challenges into a competitive advantage for your business.

I. Roasted Coffee Production and Discharge Reduction Requirements

The coffee production process consumes a large amount of water resources and simultaneously generates a significant amount of wastewater and sludge into the environment. While there are many technologies and types of equipment for coffee wastewater treatment, not every factory has access to a solution that is truly suitable in terms of investment cost and emission reduction.

II. Roasted Coffee

In the roasted coffee production process, coffee beans, after harvesting, must undergo processing to remove the fruit pulp and dry the beans before roasting. There are two main processing methods: wet processing and dry processing. Each method involves different steps and has different impacts on the flavor and quality of the coffee.

a. Wet Coffee Processing Method:

The wet coffee processing method is a complex process that requires the use of various machinery and consumes a significant amount of water, typically applied when processing Arabica coffee.

This method produces coffee beans with a bright, clean flavor and is often used for high-quality coffee types.

Process and Characteristics of Wastewater Generated from the Wet Method:

b. Dry Coffee Processing Method:

Dry processing, also known as the natural method, is a more traditional and simpler method. Dry-processed coffee often has a sweet flavor, full body, and intense fruity notes.

In Vietnam, roasted coffee is mainly processed using two common methods: the wet processing method and the dry processing method. However, the dry processing method remains the primary and more popular method, especially for the Robusta coffee variety, which accounts for the majority of coffee production in Vietnam (about 90% of total output).

Process and Characteristics of Wastewater Generated from the Dry Method:

III. Limitations of Current Wastewater Treatment Solutions for Roasted Coffee Production

Current wastewater treatment methods for roasted coffee production typically combine the following treatment processes:

1. Mechanical treatment (sedimentation, filtration) to remove suspended solids.
2. Physico-chemical treatment (coagulation, oil and grease separation) to remove insoluble substances and oils.
3. Biological treatment (aerobic, anaerobic) to treat organic substances.
4. Membrane filtration technology to enhance the quality of the treated wastewater.

Current coffee wastewater treatment methods can handle most pollutant concentrations to meet environmental discharge standards and are applied in many coffee production facilities in Vietnam. However, considering various factors including treatment efficiency, cost, feasibility, and environmental impact, there are still many limitations:

– Requires a large area to construct treatment tanks, which can be a challenge for businesses where land needs to be prioritized for production.

– Large volumes of wastewater and high monthly discharge fees to industrial parks/clusters are a significant expense.

– A large amount of sludge is generated that requires subsequent disposal, further increasing treatment costs.

– Biological treatment methods are quite sensitive to fluctuations in pollutant loads, causing many factories to face operational difficulties and frequent incidents.

– High energy consumption, which indirectly increases greenhouse gas emissions.

IV. The Solution from NGO International Co., Ltd

We understand that businesses are striving to increase their competitiveness in the market and need to meet increasingly high demands for Sustainable Development, including standards such as Rainforest Alliance, UTZ Certified, and Fair Trade.

NGO has spent years collecting operational data from coffee production plants in Vietnam, as well as operational data from coffee wastewater treatment plants, to research and develop a solution focused on energy saving and resource reuse:

– Saving Land Resources: The wastewater treatment plant is designed with high efficiency, allowing for a 50% reduction in the construction footprint.

– Energy Saving: For plants with high pollutant concentrations (COD ~ 10,000 – 20,000 mg/L), we guarantee that power consumption will always be lower than 3 kWh/m³.

– Saving Water Resources and Reducing Sludge:

• Reuse of treated water: NGO will advise on various options for reusing wastewater at the plant, ensuring that the total water consumption per ton of product is optimized.
• Reduction and recycling of sludge from production: The treatment plants will focus on reusing sludge to produce fertilizer or recycling it into raw materials, helping to minimize waste discharged into the environment and supporting a circular economy model.

– Reducing Chemical Use: Utilizing biological treatment methods with high tolerance to input fluctuations, which helps stabilize the entire system’s operation and minimize emissions and negative environmental impacts.

– Enhancing Climate Change Adaptability

Resilience and adaptation to climate change: The design of future wastewater treatment plants must consider the ability to withstand changes in weather and climate, such as heavy rain, floods, or droughts, ensuring stable operation under harsh conditions.

V. Case Study

• The Challenge: A wet processing plant with a capacity of 500 tons of fresh cherries per season. The old system was frequently overloaded, the effluent did not meet QCVN standards, and monthly electricity and sludge disposal costs amounted to 80 million VND.
• NGO’s Solution: We designed and installed a combined system of anaerobic UASB and aerobic MBBR technology.
• The Results:
  • Effluent quality consistently meets Column A of QCVN 40:2011/BTNMT.
  • 60% reduction in operating costs (electricity, chemicals).
  • 50% of water reused for floor washing and pre-processing areas.
  • Sludge volume was significantly reduced and utilized as fertilizer for the company’s own coffee gardens.
  • The factory confidently meets the standards of European customers.

“Since partnering with NGO International, we have had complete peace of mind regarding environmental issues. The new system is not only compact and cost-effective but also operates with extreme stability. Their team of experts is very knowledgeable about the coffee industry and provided us with an incredibly practical water reuse solution. This was a worthwhile investment.”
– Mr. N.T.L, Coffee Factory Director

VI. Frequently Asked Questions

NGO International Co., Ltd is committed to providing the most advanced and modern technologies to help businesses not only minimize discharge but also enhance production efficiency and protect the environment. Contact us to learn more about wastewater treatment solutions for roasted coffee production for your business via phone at 024.7300.0890 or email office@8ngo.com for a direct consultation.

***Please carefully read the Terms of Use – Copyright before copying or quoting the content and images of this website.

This website is copyrighted by NGO International Co., Ltd. Any form of use or duplication of part or all of the content in any form is strictly prohibited, except with express written permission from Us.

According to the data from the Ministry of Planning and Investment as of the end of March 2021, the country currently has 392 established industrial parks with a total natural land area of about 119.9 thousand hectares (out of the total 575 industrial parks in the development planning of industrial parks in Vietnam as approved by the Prime Minister).

Of 392 established industrial parks, 286 industrial parks have officially come into operation with a total natural land area of about 85.2 thousand hectares, an industrial land area of about 57.3 thousand hectares and 106 industrial parks are under basic construction process with a total natural land area of about 34.7 thousand hectares, industrial land area of about 18.2 thousand hectares.

Vietnam is emerging as a new industrial production center in Asia and receiving an increasingly large wave of FDI investment, so the number of investment projects in the field of infrastructure for industrial parks, industrial clusters is very vibrant. INDUSTRIAL URBAN ZONE development is emerging as one of the prominent trends in recent years. “Green Value“, “Sustainable Development” become KEY SELLING POINTS in the race of infrastructure investors to attract the customers, increase economic and service revenue, but not, any investor has enough financial potential to invest in GREEN infrastructure even though it clearly understands the value this benefit brings.

POPULAR INDUSTRIAL PARK, INDUSTRIAL CLUSTER WASTEWATER TREATMENT STATIONS IN VIETNAM

iIn Vietnam, most centralized wastewater treatment systems of industrial parks, industrial clusters use the following three technology groups:

NGO ACCOMPANIED WITH INFRASTRUCTURE INVESTORS

NGO does not aim to SELL AVAILABLE SOLUTIONS to the enterprises, instead, we wish to ACCOMPANY with the Investors, as BEST CONSULTING PARTNER ON COSTS for the Investors throughout the entire construction, development and maintenance process of industrial parks, industrial clusters

• Consulting on pollution treatment plans suitable for each stage of development of industrial parks, industrial clusters while still ensuring compliance with legal requirements
• The design solution is always the most optimal in terms of area and wastewater treatment fees in industrial parks, thereby reducing up to 75% of construction investment costs and saving costs of pipes and technological supplies. We are committed to providing providing the most optimal solution currently on the market regardless of which technology the Investor chooses. 
• The technology used is suitable for both discharge purposes and water reuse purposes
• Committed to supporting the operation and management of industrial park wastewater to ensure water quality as designed
• The solution has been proven by actual industrial park wastewater treatment plants

NGO always improves, constantly creates and optimizes its design options through experience accumulated through each project, as well as technology transfer from reputable partners around the world.

Please contact us for detailed advice.

More informations:

https://shopngoenvironment.com/product/thiet-bi-mang-loc-e-mbr/

https://shopngoenvironment.com/product/mang-loc-mbr-x/

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In the pharmaceutical industry, purified water is a widely-used raw material in pharmaceutical manufacturing and plays a decisive role for the quality and safety of each product. Therefore, in every pharmaceutical manufacturer, the water treatment system for manufacturing activities must be strictly managed, ensuring simultaneous factors: quality, stable operation.

1. Why do we have to treat water before using it to manufacture pharmaceuticals?

The water used to supply the pharmaceutical industry usually comes from:

• Underground-water
• Water from clean water supply plants in the area

Underground-water sources are often characterized by high amounts of dissolved substances, mainly manganese, calcium, and magnesium, while clean water from water supply plants is not up to the production quality assurance. Therefore, pharmaceutical enterprises are required to treat input water sources to remove impurities or microorganisms that affect the quality of pharmaceuticals.

2. Standard of water supplied for pharmaceutical production activities

Currently, purified water for pharmaceuticals activities in Vietnam is according to GMP standards. Specifically: 

3. Classification of water used in the pharmaceutical industry:

Normally, the water used in pharmaceutical industry is classified into 04 categories for different uses:

• Domestic water that is municipal tap water, used for dining area, toilets, watering plants outside the production area
• Demineralized water that has undergone soft water treatment, removed some impurities ions in water and some microorganisms, mainly used for boiler water, autoclaves for injections – eye drops, rinsing bottles for eye drops, syringes, machines ..
• Pure water that is used to prepare products that do not require sterility and are free of fever-causing substances
• Distilled water

4. What factors should a pharmaceutical manufacturer consider when investing in a water treatment system?

Currently, the technological process of water treatment for pharmaceutical manufacturing needs to ensure (03) the following factors:

• Water quality
• Easy to operate
• Saving operating costs

In addition, businesses also need to consider a number of other factors:

• Requirements for machinery and equipment: technical assurance, with clear origin
• Analysis, survey of input water before treatment for production
• Careful analysis of the use needs for each stage of pharmaceutical manufacturing, to make appropriate treatment plans
• Consider long-term economic performance, including operation, maintenance, and labour costs

5. Purified water for pharmaceuticals solution provided by NGO:

Technological advantages:

• Concentrated water from the filtration system can be reused, without oxidation risk for the RO filtration stage from oxidizing gases.
• Low-power operation
• Water meets GMP-WHO standard

6. Example of water purification process meeting GMP standard:

Water purification process meets GMP-WHO standard for reference

The treatment process consists of the following main components:

• Multi-material pretreatment system: removes sediment and suspended particles in water, and absorbs free chlorine, to prevent oxidation of free chlorine while avoiding damage to RO membrane at Post-processing step. The material can also adsorb heavy metals, small organic molecules. After this step, the turbidity in the water is controlled at SDI ≤ 5.
• 2-stage RO filter system: The reverse osmosis device has the advantages of compact structure, small area, high production volume and low energy consumption. Reverse osmosis equipment is the most important desalination equipment in this process, including safety filter, phase I pump, phase I RO system, phase II pump, phase II RO system. It also help eliminate bacteria, virus and heat source.
• Demineralization: Urban water contains sodium, calcium, magnesium, chloride, nitrate, bicarbonate, silica and other soluble salts. These salts include anions and cations. More than 99% of ions can be removed by appropriate reverse osmosis (RO). Municipal water also contains trace metals, dissolved gases (such as CO2) and other weak ionic compounds that must be removed in industrial applications (such as boron and silica).
• The conductivity of water after the RO filtration step (the input water of the EDI demineraliser) is usually between 4 and 20 us / cm, ie the reaction rate is 50-250 kΩ.cm; and according to different application fields, the resistance of pure or deionized water is usually from 2-18.2 MΩ. Demineralization process is to remove unwanted ions through hydroxyl ion exchange or hydroxide ions.
• Cleaning chemical system: including chemical containers, dosage adjustment equipment, agitator for routine RO cleaning.
• Automatic control system

Some pictures of project:

If your business is interested in solution to purified water in pharmaceutical manufacturing, or has a demand for ion exchange materials, please contact NGO via phone number (024) 3566 8225 or email office@8ngo.com for direct consultation.

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1. Standards of water supplied for electronic manufacturing activities

Water supply for electronic manufacturing is often strictly controlled to ensure product quality. Water supply for electronic component manufacturing must be ultra-pure water (UPW), only two components that are oxygen and hydrogen.

At electronics manufacturing plants, ultrapure water for semiconductor manufacturing and ultra pure water supply to electronic manufacturers are often used in the following stages:

• Washing semiconductor components in manufacturing
• Cleaning and other operations, silicon surface oxidation, plating preparation, etc.
• Other applications in the development and manufacture of semiconductor devices, thin film devices, light-emitting diodes, imaging, printing circuits, memory devices, vacuum devices, or electrical devices

Standard for water supply applies to electronic manufacturing operations based on the size of production equipment. Specifically:

(*) Recommendation for types of water quality are applied as follows:

Type E1: This water is used to manufacture devices with width from 0.5 to 1 mm

Type E 1.1: Used to manufacture devices with a width from 0.25 to 0.35 mm

Type E1.2: Used in the manufacture devices with widths from 0.09 – 0.18 mm. This is the water used for manufacturing of the most important applications

Type E2: Used to manufacture equipment with sizes from 1 -5mm

Type E3: Used to manufacture devices larger than 5mm. This type can be used to manufacture larger components and some small components, which are not affected by small amounts of impurities.

Type E4: Often used for plating solutions and for other applications that use lower water quality

2. Water supply for electronic manufacturing activities:

Currently in Vietnam, there are two main sources of water for electronic manufacturing, namely undergroundwater or water from clean water supply plants in the area.

However, the quality of underground water is currently not guaranteed and may have possibility of pollution, containing heavy metals, microorganisms … due to domestic and production activities. Therefore, electronic manufacturers are required to treat input water.

3. Solutions to treatment of electronic water supply provided by NGO:

Technological advantages:

• Water can be extracted from different treatment points to serve each stage of use in the production line, the final treatment water is ultra-pure water and meets today’s strictest requirements for quality. 
• ịEquipment imported from reputable firms in the world has been certified for quality
• The concentrated water from the filtration system can be reused
• Low power operation, only ~ 0.06 ~ 0.12 KWH / m3.
• Can be integrated with the waste treatment system to build a ZERO-DISCHARGE solution (no discharge)
• Online control system strictly controls all the operating parameters of the system
  
• Multinational and experienced technology consultant team
• Dedicated technical support and maintenance service.

If your business is interested in solution to inlet water treatment, or has a demand for ion exchange materials, please contact NGO via phone number (024) 3566 8225 or email office@8ngo.com for direct consultation.

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1. Disadvantages of current water treatment technology

Water treatment plants in Vietnam have a fairly simple water treatment process, mainly using traditional sedimentation and filtration technology (more: http://ngoenvironment.com/vn/Tin-tuc-n37-QUY-TRINH-XU-LY-NUOC-CAP-CHO-SINH-HOAT-PHO-BIEN-TAI-CAC-NHA-MAY-NUOC-d149.html) This technology has the advantage of low investment cost, basically treating of pollutants such as turbidity, low organic matter concentration (COD <5 mg / L), metals contained in water such as Fe, Mn, Mg, Ca, however this process also has many disadvantages:

• Using chemicals such as lime water, PAC, polymer or potassium permanganate (KMnO4) to treat pollutants, in case the chemical is used in excess or incorrect dosing, it will generate toxins in water supply or the treatment efficiency will be low.
• The management of water quality is performed by periodic testing (monthly, quarterly) by the authorities. Many water plants have not been equipped with automatic monitoring system, which always makes it difficult to control water quality. Moreover, the water quality depends much on the operational level and management capacity of each investor. This is an unreasonable point in the water quality management policy in Vietnam. According to Decree No.40/2019 / ND-CP, coming into effect from July 1, 2019, production facilities with discharge wastewater flow from 500 m3 / day to 1000 m3 / day must install automatic monitoring systems while there has not been a similar management regulation on the water supply plants with production capacity up to hundreds of thousands of cubic meters of water per day and night.
• Traditional technology is incapable of handling complex pollutants in water supply if the water source is polluted due to unsatisfactory discharge from industrial, agricultural or salinity. For example:

(i) Heavy metals (Arsenic)

(ii) Dissolved organic matter (COD component which is smaller than 0.4µm in size)

(iii) High hardness, ≥ 300 mg / L CaCO3. Raw water contains a lot of Cations, creating hardness in 3 main types: Ca2 +, Mg2 +, HCO-3, Cl-, SO2-4. If the water has a high hardness of over 120 mg / L CaCO3, there will be a lot of sediment when boiled.

(iv) Ammonium (NH4⁺)

 (v) Nitrate (NO3^–)

2. Treatment solution with Ion-exchange Resin method designed by NGO

The ion exchange treatment method is very efficient in removing ions in wastewater, including cationic ions that create water hardness, water-soluble COD components or toxic metal pollution in water. In the fine treatment methods including RO, Electrolysis, Electro De-Ionization, ion exchange, the use of ion-exchange resin materials has the advantage of lower investment costs and simpler operation.

• WATER SOFTENING AND EFFICIENCY

• AMONI TREATMENT AND EFFICIENCY

Ion exchange materials are also commonly used in complex wastewater treatment, mainly for the removal of heavy metals from the water.

• CYANIDE TREATMENT AND EFFICIENCY

• NICKEL TREATMENT AND EFFICIENCY

3. NGO provides all ion-exchange resin used for WATER SUPPLY, SUPER PURE WATER, WASTEWATER: 

• Cation Resion 
• Anion Resin
• Macroporous adsorption Resin
• Mixed bed/ Polishing Resin

4. Why you should contact NGO when you have demand for ion exchange materials or water filtration system?

• There are many commercial units supplying ion exchange water filtration materials on the market, and there are thousands of different resins with different physical and chemical properties, different water characteristics will need different materials. However, you must assess how other components in the water source are likely to interfere with the treatment of material. Therefore, you need a unit with the capacity of experimenting, designing and know about materials like NGO to avoid ineffective investment.
• NGO directly cooperate with scientists and R&D departments in one of the largest resin factories in the world to choose the right materials for each problem that businesses face in their treatment of water supply, as well as wastewater in their factories.
• NGO supply materials to businesses directly from the Factory without going through any commercial intermediaries. With NGO, costs for businesses will always be optimized.
  

5. Ion exchange water filter tank and integrated water treatment system

If your business is interested in solution to inlet water treatment, or has a demand for ion exchange materials, please contact NGO via phone number (024) 3566 8225 or email office@8ngo.com for direct consultation.

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With optimal design, simple operation, electrocatalytic technology is effectively applied to treat aquaculture wastewater by using electrolysis catalytic reaction equipment to thoroughly remove pollutants in wastewater such as COD, BOD, Ammonium or pathogenic microorganism.

1. Composition of aquaculture wastewater:

In Vietnam, besides the forms of aquaculture in cages, the forms of aquaculture in ponds and lakes are very popular and developed in many localities throughout the country. The main aquaculture species are freshwater fish, prawns, black tiger shrimp … With the rapid development of the aquaculture industry in recent years, a large amount of wastewater from many aquaculture units has not been thoroughly treated, leading to the risk of polluting water sources in general and lakes water in particular, significantly impacting on aquatic life and human life.

Aquaculture wastewater in general and wastewater from fish, shrimp farming in particular have high concentrations of COD, BOD, N and harmful microorganisms due to organic sources from surplus feed, bio-products used in stock-raising and waste water from livestock.

1.1 Characteristics of wastewater from fish farming:

• Fishpond water is polluted mainly by excess organic matter in water from food sources. The fact that, only about 17% of food is absorbed by fishes and the rest (about 83%) mixed in water then becomes decomposed organic matters. Stool and other wastes shall deposit in the bottom of pond, which make COD, BOD, N and other pathogenic microorganisms increase. If the waste source is discharged into the environment, it will cause eutrophication at receiving sources or algae blooms. In addition, wastewater containing residual chemicals (e.g:  antibiotics for fish) must be treated.

1.2 Characteristics of wastewater from shrimp farming:

• Wastewater of shrimp farming contains large amounts of nitrogen, phosphorus and other nutrients, which cause super-nutrients, thereby increasing the initial productivity and proliferation of bacteria. The presence of carbonic compounds and organic matter will reduce dissolved oxygen and increase BOD, COD, hydrogen sulfide, ammonia and methane content in natural waters. Another problem caused by shrimp farming is sludge sedimentation in the surrounding areas, such as mangroves. Most of substances in shrimp farming water are deposited at the bottom, which is a threat to shrimps, and shrimp farming. This mud layer is very toxic, contains many harmful substances such as ammonia, sulfur compounds….

2. Treatment solution applied to wastewater in aquaculture ponds and lakes using electrocatalytic technology.

2.1 Advantages:

• Directly treat wastewater in ponds and lakes without affecting fishes and shrimps;
• Water in ponds and lakes are continuously treated by using electrolysis catalytic reaction equipment immediately. The method saves water and periodic water changing cost;
• Simple operation and periodic cleaning;
• Decontaminating harmful wastes such as ammonia (NH3) and nitrite (NO2-) to help keep aquatic life in clean and healthy water.
• Break down protein and nutrients, reducing total organic matter levels in water
• Reduce the start-up time of the tank/ pond (Nitrogen Cycle) and prevents new tank/pond syndrome
• Minimize odor from pond water
• Improve the transparency of water
• Support to increase the longevity, density and weight of shrimps and fishes in the ponds, thereby improving economic efficiency.

2.2 Operating Principles:

Electrocatalytic treatment technology for aquaculture wastewater which contains a large amount of salts, organic matter, sulfur compounds, heavy metal ions, acid, alkaline … This technology uses oxidation reaction of the hydroxyl (OH) free radical group with very strong reaction in short time. Most of the organic waste through the system is quickly broken down into carbon dioxide, water, and smaller organic and inorganic ions through oxidation.

With many economic benefits for farmer, optimized design, simple operation and cost saving, aquaculture wastewater treatment solutions by Electrochemical catalysis technology introduced and developed by NGO will contribute to the effective treatment of pollutants in aquaculture wastewater, ensuring that after-treatment water meets the requirement of QCVN 01-80: 2011 / BNNPTNT standard.

More:

https://shopngoenvironment.com/product/thiet-bi-ras-filter/

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• Water is a main input material for beverage, dairy, and food production. 
• Water quality  has direct impact on the quality of the product and production of eqipment. 
• The higher the rate of treated water achieved for the production, the more optimal production cost will be. The lower the removal and discharge ratio, the better

The production of food and beverage usually does not require a water source with a very low conductivity compared to that required by the manufacture of electronic components or pharmaceuticals. The conductivity required will depend on the particularities of the product. Common water standards for food water production are equivalent to QCVN 01: 2009 / BYT or higher.

1. Pretreatment by multi-material filter

– Removal of most of the suspended, pre-insoluble residue, helping to achieve the required transparency

– Adsorption of color, odor, and organic pollutants in water

– Treatment of residual chlorine in water supplied from municipal water plants

2. Water softening

The complete removal of ions that cause hardness in water such as Calcium, Magnesium to eliminate scaling, clogging of pipes, equipment, especially cooling, or boiler systems need special attention, because Vietnam urban water supply is applicable for a high hardness standard (~ 300 mg/L CaCO3), most factories are still supplying hard water for domestic use or directly using well water for their production activities.

3. The further treatment of specific pollutants for each wastewater source

Most water treatment systems in water supply plants in Vietnam do not have technological components to treat special pollution in water source, for example: Nitrate, Ammonium, heavy metals, organic pollution in water sources at high level to ensure all parameters will meet drinking water standards. Therefore, if the enterprise’s water source is polluted with these components, it is necessary to pay attention to supplementing the corresponding technological component when building the water treatment system.

4. Purified water production by RO system

Some beverage industries such as the dairy industry and the beer industry have higher requirements on the safety and quality of water used in the production process, so many factories will need to be equipped with purified water production systems with RO technology, and will usually need 1 RO level only.

The function of the RO system is to eliminate all bacteria, viruses, and water conductivity. After RO filtration, all molecules and metal ions larger than 0.001 µm in size will be removed. However, there is still a risk of reinfection of the bacteria on the pipeline or at the point of use.

5. Intensification of sterilization

The sterilization, killing bacteria and risky microorganism on the pipeline by ultraviolet rays before use will ensure 100% pure output water.

High standard pipeline design ensures thorough elimination of microorganisms not only at the filtration system but also at the points of use.

6. Notes on standards

Standards of equipment, pipes, tools and installation methods for water treatment systems should be equivalent to those applied by factories, for example Vietnamese standards or European standards. The system is often designed to be fully automated.

If your business is interested in solution to inlet water treatment, or has a demand for , please contact NGO via phone number (024) 3566 8225 or email office@8ngo.com for direct consultation.

***Vui lòng đọc kỹ yêu cầu về Điều khoản sử dụng – Bản quyền trước khi sao chép hoặc trích dẫn nội dung và hình ảnh của website.

Trang web này thuộc bản quyền của Công ty TNHH Quốc tế NGO (NGO International). Bất kỳ hình thức sử dụng hoặc sao chép một phần hoặc toàn bộ nội dung dưới mọi hình thức đều bị nghiêm cấm, trừ trường hợp được sự cho phép rõ ràng bằng văn bản từ Chúng tôi.

According to Decree No. 80/2014/NĐ-CP  of Government dated August 2016 regarding wastewater drainage and treatment, wastewater from drainage system of municipal area, industrial zone, concentrated rural residential area discharging into receiving source must meet environmentally technical specification of Ministry of Natural Resources and Environment.

In which, wastewater from factories in industrial zone discharging into concentrated drainage system of industrial zone must comply with prevailing regulations on environmental management in industrial zone, in particular, QCVN 40:2011/BTNMT specification, which stipulate that B-Standard is the lowest applicable level.

For enterprises locating outside Industrial Zone, Industrial Complex, treatment standard shall comply with QCVN 14:2008/BTNMT, column B or A.

Petroleum wastewater treatment solution provided and implemented by NGO is thoroughly treating mineral oil by chemical adsorption and has much cheaper cost.

Oily wastewater is mainly composed of mineral oil, in addition garbage, sediment, clay, surfactants, etc.

Essence of oil is dense liquid, with a featured odor, lighter than water, which is slowly oxidized, can last up to 50 years.

1. Oily wastewater exists in the following status:

• Free-form: This oil will emerge and create oil film. Oil is present in the form of free-oil seeds or mixed with water. Free oil will float on the surface because the specific gravity of oil is lower than the specific gravity of the water.
• Emulsion-form: Formed by chemical agents such as soap, caustic soda, detergents, etc., or asphaltene chemistry altering surface tension and chemically stabilizing the dispersed oils.
• Soluble-form: Soluble molecules.

2. Major sources of oily wastewater include:

• Water uses for periodically cleaning tank at petroleum depots to ensure fuel quality.
• Drain out tank-bottom water after ending the process of ship entering into the storage tank.
• Periodic industrial sanitary water and after finishing amendment of technology, equipment in petroleum depots.
• Rain water falls on the area that can contaminate the oil at the storage and petrol stations.
• Water use for floor cleaning, car wash, car maintenance.
• Cooling water or sewage from mechanical factories

3. Treatment solutions currently applied to petroleum production waste water:

• Coagulation, floatation method: Low cost, easy deployment but not thoroughly treated, because super-small mineral oil molecules are difficult to fully coagulate or flotation. Therefore, after-treatment water normally still contains oil.
• Filtration method by using membrane: Can filter up to 90% of the amount of gasoline in the effluent or higher depending on the filtered material. The cost of treatment is usually very high, the material is not reusable and after-treatment water may still has the characteristic smell of oil.
• Material-adsorption method: Can remove oil thoroughly, but the material is quickly saturated (for example, oil-impregnated cloth), easy to be clogged, especially in waste water with high TSS content, high processing costs

After the study period, NGO could provide a solution Oily wastewater treatment that can thoroughly treat mineral oil by chemical adsorption and has much cheaper cost than using adsorption materials. Reaction time is shorter and mineral oil is removed almost completely. After-treatment water has no odor. The solution is suitable for projects with small scale discharge capacity as well as projects with large discharge capacity.

Wastewater with reside generated from storage tank rinsing process (1-2 year/time) is the effluent source of highest oil contaminated level, from tens to tens of thousands ppm. Characteristics of this type of wastewater is high concentration of oil and high inorganic residue.

***Vui lòng đọc kỹ yêu cầu về Điều khoản sử dụng – Bản quyền trước khi sao chép hoặc trích dẫn nội dung và hình ảnh của website.

Trang web này thuộc bản quyền của Công ty TNHH Quốc tế NGO (NGO International). Bất kỳ hình thức sử dụng hoặc sao chép một phần hoặc toàn bộ nội dung dưới mọi hình thức đều bị nghiêm cấm, trừ trường hợp được sự cho phép rõ ràng bằng văn bản từ Chúng tôi.