Mechanical filter purification treatment

A mechanical filter, mechanical filter working principle

is to use one or several of filter medium, under certain pressure, make concentrate through the media, to remove impurities, so as to achieve the purpose of the filter. Inside of packing is commonly: quartz sand, anthracite, porous ceramic particles, manganese sand, etc. , the user can choose to use according to actual situation. Mechanical filter packing was mainly used to reduce the water turbidity, intercept in addition to the area of the water suspended solids, organic matter, colloid particles, microorganism, chlorine smell and some heavy metal ions, the purified water of one of the traditional water treatment method.

2, mechanical filter characteristic

1, the use of the particle size grading filter medium variable void tell deep bed filtration unit design is a kind of suspended solids, colloid and other impurities trapped in the filter surface and medium pore filter layer on the surface of the intercept form secondary filter impurities such as suspended solids, colloid when passing through variable space to produce synthetic flocculation effect, improve the removal rate of small particles can transform in and out of the gate, or compressed air to carry on the back flush, trial operation simple mechanical filter shell material choose carbon steel or stainless steel lining anti-corrosion layer, small flux filter also can choose PP tube outsourcing fiberglass filter operation control part, mechanical automatic control and program control system, etc.

1, high filtration precision, particle size greater than 5 microns of suspended solids removal rate up to 90 ~ 95%, the water turbidity is much lower than sand filter, and adjustable

2, high filtration velocity, filtration speed of 20 ~ 60 m/h is commonly 3 times of sand filter, so the area is far less than sand filter

3, great capacity of sewage: more than 20 kg/m3, more than four times as great as that of sand filter

4, since water consumption is low, only for water rate of 0.

5, 5 ~ 1% automatically adjust the filter layer compactness: highly automatic filter area distribution process, do not need to plus mechanical power

6, floating plate no jam: original orientation device, can guarantee the floating plate won't appear skewed jam phenomenon

7, the raw water quality adaptation range: from 15 ftu - water turbidity 200 ftu, remove turbidity water all fish 3 ftu, can significantly extend contact filtration applications

8, the backwashing water demand is not high, usually can use raw water backwashing

9, spurt water qualified: generally do not require early discharge filter water

10, good backwashing effect: filter layer stretch space is large, good backwashing effect, effectively remove COD:

11 biochemical precipitation water after filtration, removal rate of COD can be up to 30 ~ 50%

high chemical stability: 12, filter, filter material has a strong chemical stability, long service life

13, do not need special backwashing water pump: because the backwashing water volume is small, and adapt to a wide range, does not need to like other medium filter backwashing water pump set large flow, can use the original water pump by mixing valves.

mechanical filter is widely used in water treatment process, mainly used for water treatment in addition to turbidity, reverse osmosis and ion exchange softening stage pretreatment before desalination system, also can be used in surface water, groundwater, in addition to the sediment. Water turbidity requires less than 20 degrees, the water turbidity can be up to 3 degrees.