Asymmetric fiber bundle filter bed composed of the water in the compaction, the water flow through the filter layer when the resistance, from top to bottom, head loss gradually reduced, the water faster and faster, the degree of compaction of the filter media More and more high, the porosity is getting smaller and smaller, so along the flow direction, the automatic formation of a continuous gradient density filter layer distribution, forming an inverted pyramid structure. The structure is very conducive to the effective separation of suspended solids in water, that is, the upper part of the filter bed desorption particles can easily be in the lower narrow channel filter bed was trapped and retained, to achieve high filtration rate and high precision filtration uniform, improve the filter Interception capacity, to extend the filtration cycle. Features:
1, high filtration precision: the removal rate of suspended solids in water up to 95%, the organic molecules, viruses, bacteria, colloids, iron and other impurities have a certain removal, after a good coagulation treatment of treated water, When the influent is 10NTU, the effluent is below 1NTU;
2, filtration speed: generally 40m / h, up to 60m / h, is more than 3 times the ordinary sand filter;
3, the amount of pollutants large: generally 15 ~ 35kg / m3, is more than 4 times the ordinary sand filter;
4, low backwash water consumption: backwash water consumption is less than the cycle of 1 to 2%;
5, low dosage, low operating costs: As the filter bed structure and filter their own characteristics, flocculant dosage is conventional technology 1/2 to 1/3. Cycle water production increase, tons of water running costs also will be reduced;
6, small footprint: Preparation of the same amount of water, covers an area of ordinary sand filter 1/3 below. In this case,
7, adjustable strong. Filtration accuracy, interception capacity, filtration resistance and other parameters can be adjusted according to need;
8, the filter material is durable, with a life of 20 years.
