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Ultrafiltration facilities
DESIGNATION OF WATER ULTRAFILTRATION.
Water ultrafiltration is used to remove proteins, high molecular organic compounds from liquids. The facilities are capable of partial retaining of bacteria and viruses. Mechanical fine-dispersed impurities may be also removed. The technique is of high demand in various sectors of industry thanks to its rather extensive potentialities: • Feed water treatment at facilities with demineralization filters and reverse osmos (ro) plants (boiler houses and plants, heat exchanging equipment); • Removal of bacteria and viruses from flows of water coming from open sources (treatment of drinking and process water); • Treatment of industrial waste waters; • Final stage of advanced treatment downstream of biological waste treatment facilities.
Part number:
ПВО-UF-5, ПВО-UF-10, ПВО-UF-20, ПВО-UF-30, ПВО-UF-40, ПВО-UF-50, ПВО-UF-60, ПВО-UF-70, ПВО-UF-80, ПВО-UF-90
Description
ULTRAFILTRATION OPERATION CONCEPT
Ultrafiltration is included into baromembrane separation processes. Pressure differential between two sides of a filter diaphragm (membrane) is an applied force.
To prevent fast failure of the equipment incoming water shall be pretreated for the purpose of removing small mechanical impurities. This function is performed by a mechanical filter–‘dirt collector’.
In case of need an incoming line may be equipped with secondary reagents (coagulants and flocculants); these reagents help to retain particles the sizes of which are less than the diameter of membrane pores. Reagents added into water flow cause formation of small flakes (floccules). Colloidal and organic impurities to be removed are retained (fixed) on the surface of flakes produced.
Filtering modules shall be periodically flushed to restore the facility to working condition. Backwashing is performed from a permeate water collector.
Additional reagents (acid, alkali or sodium hypochlorite) are used in case of stable chemical sludge formation. A washing solution passes through the outer side of filter fiber and goes inside washing off all accumulated contaminants into drainage.
DESIGN OF ULTRAFILTRATION FACILITIES.
A filtering module is a main item of an ultrafiltration facility. Ultrafiltration facilities implemented by the company are based on modules manufactured according to multibore® technology.
Water flow passes through a multichannel fiber bundle. Filter fibers are made of polyester- sulphone. Specific feature of this material is availability of fine structural pores of 0.02µm diameter. Actually fiber walls represent a filter itself with a semi-permeable membrane. The module arrangement makes incoming water flow move inside the fiber bundle. Filtration process is directed inside-out. Retained contaminants are left inside channels. Clean water (permeate) comes out via walls and is discharged from the body.
COMPOSITION OF ULTRAFILTRATION FACILITIES.
Main structural elements of uf facilities may slightly differ depending on working conditions, requirements set to treated water quality and the automation level required. A basic standard configuration includes the following items:
• Package of filtering modules;
• Package of reagents (dozing of coagulant and flocculant solutions);
• Preliminary filter;
• Automatic flushing assembly;
• Automatic control unit;
• Piping and valves.
The complete set of the facility may be extended optionally (upon the customer request) or in case of need. The following items are added in this case:
• Accumulating filtrate tank;
• Delivery pump on incoming line;
• Instrumentation (quantity and functionality of metering devices determine automation level of the system).
Ultrafiltration is included into baromembrane separation processes. Pressure differential between two sides of a filter diaphragm (membrane) is an applied force.
To prevent fast failure of the equipment incoming water shall be pretreated for the purpose of removing small mechanical impurities. This function is performed by a mechanical filter–‘dirt collector’.
In case of need an incoming line may be equipped with secondary reagents (coagulants and flocculants); these reagents help to retain particles the sizes of which are less than the diameter of membrane pores. Reagents added into water flow cause formation of small flakes (floccules). Colloidal and organic impurities to be removed are retained (fixed) on the surface of flakes produced.
Filtering modules shall be periodically flushed to restore the facility to working condition. Backwashing is performed from a permeate water collector.
Additional reagents (acid, alkali or sodium hypochlorite) are used in case of stable chemical sludge formation. A washing solution passes through the outer side of filter fiber and goes inside washing off all accumulated contaminants into drainage.
DESIGN OF ULTRAFILTRATION FACILITIES.
A filtering module is a main item of an ultrafiltration facility. Ultrafiltration facilities implemented by the company are based on modules manufactured according to multibore® technology.
Water flow passes through a multichannel fiber bundle. Filter fibers are made of polyester- sulphone. Specific feature of this material is availability of fine structural pores of 0.02µm diameter. Actually fiber walls represent a filter itself with a semi-permeable membrane. The module arrangement makes incoming water flow move inside the fiber bundle. Filtration process is directed inside-out. Retained contaminants are left inside channels. Clean water (permeate) comes out via walls and is discharged from the body.
COMPOSITION OF ULTRAFILTRATION FACILITIES.
Main structural elements of uf facilities may slightly differ depending on working conditions, requirements set to treated water quality and the automation level required. A basic standard configuration includes the following items:
• Package of filtering modules;
• Package of reagents (dozing of coagulant and flocculant solutions);
• Preliminary filter;
• Automatic flushing assembly;
• Automatic control unit;
• Piping and valves.
The complete set of the facility may be extended optionally (upon the customer request) or in case of need. The following items are added in this case:
• Accumulating filtrate tank;
• Delivery pump on incoming line;
• Instrumentation (quantity and functionality of metering devices determine automation level of the system).
Specification
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