Summary:
Precipitation and clarification process water treatment, the water part of the larger settlement of solid particles or impurities to be removed easily, but to further purify the water, you have to use filtering methods to the water through the device from the top down, by the small and large particles of different filter media layers, the water of small particles, colloids, organic matter and other impurities trapped down, so that further clarification and water purification, according to the case of head loss device or filter run time to determine the filter control the recoil time. All configurations of the device on valve opening and closing of various types of equipment within the media backwash, the deposition of debris on the media rinse, the equipment was then filtered into a new cycle.
Mechanical filter, also known as pressure filters, pure water pre-treatment equipment, water purification system, an important part of the material with rubber lined steel or stainless steel. Fill the filter media for different purposes and role of each difference. Generally have quartz sand filter, activated carbon filters, manganese sand filter. According to the actual situation can also be used alone in combination.
Mechanical filter media filter is quartz sand, anthracite, etc. Function is to filter out suspended solids, organic impurities, organics, reduce water turbidity.
Filter medium
Quartz sand :granularity0.6~1.2mm 2~4mm 4~6mm
Anthracite: 0.8~2.0mm
Scope of application
1, The water contains suspended solids agglomerate flakes with precipitation and other methods can not be removed, the water through the filter can be installed within the media, the water reached the water standard.
2, The product requirements for filtered water turbidity is generally after the 5mg / L or less in line with drinking water quality standards and production of industrial water treatment facilities for industrial and mining enterprises and towns.
3, To choose water
(1) Single-layer filter used in water turbidity is usually 50mg / L of water, raw water without coagulation should be in the filter before filling coagulant.
(2) Dual-media filters and water turbidity is generally applicable to 15mg / L or less, the maximum is not greater than 20mg / L of precipitation water.
Technical parameters
1、 Design pressure:6kgf/cm2,Test pressure:9kgf/cm2;
2、 Inflow temperature:20℃;
3、 Operating velocity :10m/h;
4、 Effluent quality:when the influent water turbidty is less than 20mg/L,the effluent turbidty is less than 5mg/L;
5、 Backwashing strength: quartz sand 15 ~ 18L / S • m2, anthracite 10 ~ 12L / S • m2, quartz sand, anthracite 13 ~ 16 L / S • m2;
Mechanical filter is used for water pre-treatment equipment, one of its principle is to retain the use of media to clarify the effluent suspended solids in water, the filter device according to the type of load is divided into single, double or triple.
Turbidity:inflow10-20mg/L effluent2-5mg/L