Product & Technology

We Cherish People, We Cherish the Environment
Sinsung Plant

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■ Physical and Chemical Processing Equipment

■ Biological Processing Equipment

■ Anaerobic Digestion System




Outline

A processing facility that purifies waste water that has played its role in houses, public organizations, commerce and industrial facilities. Since the modern industrial waste water disposal has diverse icons according to property of used raw materials and production processes, advanced technology such as precise analysis of pollution sources, pilot test for efficient processing process adoption and economic design is required.

According to this, diverse waste water processing facility by industry must be designed and constructed and by selectively constructing physical, chemical and biological processing facility matching the site conditions, a pleasant, economically feasible and stable waste water disposal plant must be realized. The best waste water processing system considering the maintenance side, optimum working environment and conditions from start to the end must be applied. The new plant must discover the property and emitting icon of the emitting facility and must design and construct based on the accumulated design and experience. By guaranteeing the reliability of the result and making the maintenance easy, the maintenance costs can be greatly decreased.

Waste Water Facility Design Process

Waste Water Facility Design Process

Types of Waste Water Processing Facility

Construction Method of Waste Water Processing Facility

폐수처리시설 공법에 대한 테이블
Physical Processing Facility Chemical Processing Facility Biological Processing Facility Advanced Processing Facility
  • Screening
  • Grit Chamber
  • Oil Separator
  • Flow Equalization Tank
  • Mixed Facility
  • Precipitation Facility
  • Surfacing Facility
  • Filter Facility
  • Dehydration Facility
  • Enrichment Facility
  • Neutralizing Facility
  • Reducing Facility
  • Oxidizing Facility
  • Sterilizing Facility
  • Absorbing Facility
  • Precipitate Improvement Facility
  • Trickling Filter
  • Activated Sludge Method
  • Rotating Disc Method
  • Contact Oxidation Method
  • Aerobic Digestion Facility
  • Anaerobic Digestion Facility
  • Ion Exchange
  • Total Phosphorus and Nitrogen Removal
  • Membrane Dissection
  • Ultra filtrating Device
  • Reserve Osmosis Device
  • Microfilter

Physical Processing Facility

  • Screening

    As the first stage of waste water processing, it protects damage of pump and machines due to diverse impurities entered with the water and is a required device for the maintenance of mass balance within the waterway. It is screened in the form of manual bar screen, mechanical screen, micro screen and screw pump

  • Grit Chamber

    It prevents damage such as pumps due to pebbles, sand, vinyl and other metals within the waste water as well as preventing closing of the pipe. By preventing it being accumulated in the after process (aeration tank, settling chamber, digestion tank etc.) it is installed to preserve processing efficiency and there are horizontal, vertical and aeration methods.

  • Oil Separator

    By removing oil from the waste water, it is a device that allows the smooth maintenance of processing function being implemented afterwards and its types include baffle/API/PPI and CPI method.

  • Flow Equalization Tank

    As a device that minimizes change of flow and concentration of waste water due to passing of time, it control flow through the forms of sump (equalization chamber), pumping chamber, processing chamber and discharge chamber.

  • Mixed Facility

    By adding coagulant in optimum PH state to the impurities or heavy metal, which are in colloid state and area contained in the waste water, it makes the article group or forms metal hydride and makes precipitation smooth.

  • Precipitation Facility

    The flock made after chemical and biological processing is naturally sunk using gravity and has a function of separating and removing solid from liquid.

  • Surfacing Facility

    It prevents damage such as pumps due to pebbles, sand, vinyl and other metals within the waste water as well as preventing closing of the pipe. By preventing it being accumulated in the after process (aeration tank, settling chamber, digestion tank etc.) it is installed to preserve processing efficiency and there are horizontal, vertical and aeration methods.

  • Filter Facility

    By removing oil from the waste water, it is a device that allows the smooth maintenance of processing function being implemented afterwards and its types include baffle/API/PPI and CPI method.

  • Dehydration Facility

    As a device that minimizes change of flow and concentration of waste water due to passing of time, it control flow through the forms of sump (equalization chamber), pumping chamber, processing chamber and discharge chamber.

  • Enrichment Facility

    By adding coagulant in optimum PH state to the impurities or heavy metal, which are in colloid state and area contained in the waste water, it makes the article group or forms metal hydride and makes precipitation smooth.

Chemical Processing Facility

  • Neutralizing Facility

    It is a device that adjusts optimum pH to make coagulation, oxidization and reduction easy and is used for
    pH adjustment for coagulation: SS, heavy metal processing
    pH adjustment for oxidization: CN processing
    pH adjustment for reaction: Cr6+ processing

  • Reducing Facility

    After injecting H2S04 to heavy metal waste water with Cr+6 so that it becomes pH2.5-pH2.8, NaHS04 is injected. As a facility that reduces this to harmless Cr3+, there is acid reduction precipitation method, ion exchange method, electrolysis reduction method.

  • Oxidation Facility

    By injecting oxidizing materials of NAOCI, CI2, HOCI, KMn04 in the waste water containing CN, it removes by decomposing to CO2 and N2. According to the oxidization method, there is alkali chlorine injection method, ozone oxidation method, ferrite method, electrolysis method and incineration method.

  • Sterilizing Facility

    In this the case of waste water with pathogen or with waste water where decomposition is possible, it sterilizes just before discharge and there is sterilization with chlorine, sterilization with hypochlorite and sterilization with ozone.

  • Absorbing Facility

    It is a device that has removal function of remaining BOD, COD, deodorization and ABS regarding waste water that passes filtering facility and biochemical waste water

  • Precipitate Improvement Facility

    t is a device that changes slime ikon with chemical or physical method before or after enrichment processing to ease dehydration efficiency.

Biological Processing Facility

  • Trickling Filter

    Trickle uniformly the waste water to be disposed using the distributor above the tank filled with pebbles, stones and plastic. Take the waste water processed in the thrashing layer to the lower sewage facility and for the removal of the passed microorganism flock, one must past the ultimate settling chamber. It is installed in the methods of standard, intermediate, and high speed and super-rate trickling methods.

  • Active Sludge Method

    By making the organic within the waste water of aerobic conditions into minerals, there is the activated sludge method as a method that removes organic materials within the waste water through the breathing and integration process by microorganisms during microorganism increase. As modifications using the activated sludge method, there is step aeration, contact stabilization, modified aeration, extended aeration and pure oxygen activated sludge

  • Rotating Disk Panel Method

    The multiple original plastic panels installed at right angles to the flow of the waste water makes the microorganisms attached on top of the original panel pass the waste water according to the axis rotating. Here, the microorganism absorbs the organic material and makes it become aerobic state. It is a device that processes by decomposing organic material due to the microorganism’s metabolism. There is the single-state rotary biological contactor and multi-stage rotary biological contactor.

  • HBC Method

    By making the microorganisms grown by sticking in the HBC Ring of the lace or loop type with the organic materials in the water, the pollutants are removed. Therefore, if air is supplied in the aspect of aeration tank, the oxygen in the water is melted and due to the rise of the bubble, agitation with the polluted water occurs. Here, the microorganisms attached to the HBC Ring repeatedly contacts the pollutants in the water and leads to the oxidation and decomposition of organic pollutants. The surplus sludge coming out from anaerobic bacteria within the ring is decomposed and the sludge occurrence is ultimately decreased.

  • Aerobic Digestion Facility

    Using the microorganisms under aerobic digestion, (sometimes obligate aerobic is possible too), it oxidizes the organic sludge. The maintenance is simple and BOD concentration is low while power needed is big due to the aeration device. As methane is not produced, the energy use is restricted and as digestion sludge water percentage is high, the volume of dehydrated sludge is bigger than the anaerobic property. There are batch and continuous flow types.

  • Anaerobic Digestion Facility

    It is the most frequently operated sludge method and in the anaerobic conditions, the microorganisms and methane making bacteria are used to oxidize organics sludge. There is high efficiency digestion tank, low efficiency digestion tank and second stage. Although maintenance is not as easy as the aerobic digestion facility, the power requirement and sludge occurrence is small and as there is a lot of methane occurrence, it can be used again.

Process Flow Chart

Applied Area

  • - Organic waste water in all industries (food manufacturing factories)
  • - Plating, electric, semi-conductor waste water
  • - High concentration waste water containing other inorganic materials such as steel industrial waste water
  • - Medical and raw material integration waste water
  • - Waste water containing nitrogen and phosphorous (spiritus, medicine, skinner, dye, gelatin etc.)
  • - Other organic waste water occurring locations
  • - Waste water processing facilities
  • - Other heavy water processing facilities
  • - Other pure water processing facilities

Organic High Concentration Waste Water

As waste water with no harmful materials and with a high concentration of organic material, it is appropriate for general biological disposal method

By Industry Product Name Source of Waste Water Quality and Quantity of Water General Disposal Method Note
Animal and Plant Maintenance Manufacturing Method Animal maintenance, plant maintenance
  • Extracting facility
  • Cleaning facility
  • Deoxidization facility
  • pH 4∼9
  • BOD 100∼2,000 ppm
  • SS 400∼2,000 ppm
  • Waste Water Amount 500∼2,000 (㎥/d)
Flotation Be careful of emulsion separation and need to handle odor
Medicine Manufacturing Method Serum, vaccine, medicines, integrated medicines, vitamin, hormone, alkaloid antibiotics
  • Emergency facility
  • Distillation facility
  • pH 2∼11
  • BOD 24∼2,500 ppm
  • SS 200∼600 ppm
  • Waste Water Amount 1000∼3,000 (㎥/d)
  • Neutralizing precipitation
  • Active sludge method
Be careful of pH, color, smell
Gelatine Adhesive Manufacturing Glue Gelatine
  • Extracting facility
  • Reaction facility
  • pH 1∼9
  • BOD1000∼5000 ppm
  • SS 500∼700 ppm
  • Waste Water Amount 50∼150 (㎥/d)
Active sludge method Be careful of smell
Petrol Refiner Petrol Products, Gasoline Paraffin etc. Cleaning facility (emulsified oil, acid/alkali)
  • pH 1∼13
  • BOD 20∼200 ppm
  • SS 20∼100 ppm
  • Flotation
  • Active sludge method
  • Coagulative precipitation

Organic Low Concentration Waste Water

It has comparatively low amounts of organic materials and has waste water of domestic sewage. Generally, biological disposal method is suitable. With products with a lot of oil contained, congelation reaction and flotation is both applied.

By Industry Product Name Source of Waste Water Quality and Quantity of Water General Disposal Method Note
Organic Manufacturing Product Manufacture Coal-tar product, mixed dye, dye medicine’s intermediary product fermentation and manufacturing Methanol synthetic resin
  • Reaction Facility
  • Cleaning Facility
  • pH 1∼13
  • BOD 100∼300ppm
  • SS 20∼150ppm
  • Waste Water Amount 20∼500 (㎥/d)
Flotation Be careful of emulsion separation and need to handle odor
Organic Processed Goods Paint Manufacturing Interface Activation Agent Manufacturing and Processing Fatty acid, hardened oil glycerin
Soap interface activation agent painting ink
Cleaning agent polishing agent product
  • Crude Oil Cleaning Facility
  • Cooling Water
  • pH 2∼11
  • BOD 200∼400ppm
  • SS 200∼250ppm
  • Waste Water Amount 50∼1,000 (㎥/d)
  • Neutralizing precipitation
  • Active sludge method
Be careful of pH, color, smell
Petrol Reproduction Industry Waste oil refining, reproduction oil
  • Cleaning Facility
  • Distillation Facility
  • pH 2∼8
  • BOD 20∼200 ppm
  • SS 300∼250 ppm
  • Waste Water Amount 10∼50 (㎥/d)
Active sludge method Be careful of smell
Petrol Refining Industry Petrol Products, Gasoline Paraffin etc. Cleaning Waste Water (emulsified oil, acid/alkali)
  • pH 1∼13
  • BOD 20∼200 ppm
  • SS 20∼100 ppm
  • Flotation
  • Active sludge method
  • Coagulative precipitation

Waste Water with Organic Harmful Materials

Since there is harmful material in the waste water, biological disposal method is difficult. Therefore, the waste water must be thinned to the point that there is no problem with biological processing or the harmful substances must be oxidized using physical or chemical methods. After removing this, biological method can be used.

By Industry Product Name Source of Waste Water Quality and Quantity of Water General Disposal Method Note
Leather manufacturing Leather, tanning, marine leather, leather bleaching, leather dying
  • Raw material disposal facility
  • Tanning facility
  • Limestone deposition facility
  • Dying facility
  • pH 7∼12
  • BOD 800∼2,500 ppm
  • SS 50∼3,000 ppm
  • Waste Water Amount 30∼600 (㎥/d)
  • Coagulation Precipitation Method
  • Active sludge method
  • Circulation waterway abandonment
Be careful chrome sulfur compounds
Sterilizer, Pesticide Manufacturing Agricultural Pesticide Manufacturing Pesticide, germicide agricultural pesticides
  • Reaction facility
  • Cleaning facility
  • pH 4~9
  • BOD 20~100 ppm
  • SS 50~70 ppm
  • Waste Water Amount 50∼300 (㎥/d)
Precipitation, activated
Absorption or neutralization
Removal harmful substances for each product by absorbing in the manufacturing process
Chemical Manufacturing Nitro Cellulose TNT
  • Cleaning waste water
  • Nitro
  • Cellulose
  • TNT
  • Nitro
  • Glycerin
  • Dynamite
  • Organic solvent
  • Contains Diphenylamine
  • pH 0.9∼1.4
  • Remaining calcium carbonate: 9.000∼11,800 ppm
  • COD : 350 ppm
  • SS 40 ppm
  • Ammonia nitrate 1270 ppm
Active sludge method

Inorganic General Waste Water

The waste water in this has different disposal method according to dissolved salts. The acid or alkali containing waste water is neutralized and the iron salt is precipitated and removed by hydroxides.

By Industry Product Name Source of Waste Water Quality and Quantity of Water General Disposal Method Note
Chemical Fertilizers Ammonia fertilizer Lime nitrate phosphorus fertilizer
  • Reaction facility
  • Exhaust Gas
  • Cleaning facility
  • pH 1∼4
  • SS 50∼150 ppm
  • Waste Water Amount 100∼1000 (㎥/d)
Neutralization, Precipitation Method Ammonia etc. needs third disposal
Weapons Manufacturing Product Manufacturing Soda manufacturing product,
calcium carbide
Electrographite Acid inorganic pigment Other salted inorganic Manufacturing products
  • Reaction facility
  • Cleaning facility
  • Exhaust Gas
  • Cleaning facility
  • pH 1∼9
  • SS 1000∼2000 ppm
  • Waste Water Amount 500∼209000 (㎥/d)
Neutralization, Precipitation Method Be careful of pH and color
Metal Surface Processing Electrolysis, polishing Almite Metal primer
  • Acid/Alkali
  • Cleaning facility
  • pH 2∼10
  • SS 70∼150 ppm
  • Waste Water Amount 20∼60 (㎥/d)
Neutralization Precipitation Method Be careful of waste water change

Inorganic Harmful Material Waste Water

If the waste water dissolved cyan, cadmium, mercury, chrome, copper, zinc and arsene is accumulated in marine animals or the human body, it can cause harm so such substances are disposed of and removed in the waste water.

By Industry Product Name Source of Waste Water Quality and Quantity of Water General Disposal Method Note
Electrical plating
  • Plating product
  • Various electrics
  • Machine parts
  • Vehicle parts
  • Bearing
  • Plating facility
  • Acid/alkali
  • Cleaning facility
  • pH 1~2
  • Cyan 20~200 ppm
  • Chrome 40~150 ppm
  • Waste water amount 10~30 (m squared/d)
Chemical disposal Be careful of waste water change Need to process heavy metal
Weapons Manufacturing Product Manufacturing Soda manufacturing Mercury electrode electrolysis facility Mercury containing waste water
  • Ion exchange
  • Chemical processing
Alkali Manufacturing
  • Caustic soda
  • Chlorine, hydrochloric acid
Salt electrode electrolysis facility Mercury containing waste water
  • Ion exchange
  • Chemical processing
Agricultural Pesticides Manufacturing
  • Lead arsenate
  • Mercury Compound
Reaction tank cleaning water About 70g of acetic acid per 1ton product and 70g of nitric acid emitted Neutralizing, Precipitation Ion exchange
Chemical Products Nitric acid aluminum Reaction tank cleaning water Waste water containing high concentration nitric acid Waste water containing oil Neutralization, Oil Removal