Hepa filter by adding flocculating agent in the pump to the circulating water, raw water through the booster pump, flocculating agent after the pump impeller stirring mixing tiny solid particles suspended and colloidal substance in the raw water of micro flocculation reaction, quickly generate greater than 5 micron floc size, flows through the filter system piping into efficient asymmetric fiber filters, floc filter material filter intercept. The high efficiency filter is washed by combined air and water. The backwash air is provided by the fan, and the backwash water is provided by the tap water directly. System waste water (high efficiency automatic gradient density fiber filter backwash waste water) is discharged into the sewage treatment system.
1. High filtration accuracy: the removal rate of suspended solids in the water can reach more than 95%, and the impurities such as macromolecule organic matter, virus, bacteria, colloid and iron can be removed to a certain extent. The treated water after good coagulation treatment, when the water inflow is 10NTU, the water outflow is less than 1NTU;
2. Fast filtration speed: generally 40m/h, up to 60m/h, more than 3 times of the ordinary sand filter;
3. High pollution absorption capacity: generally, it is 15 ~ 35kg/m3, more than 4 times that of the ordinary sand filter.
4. Low backwash water consumption: backwash water consumption is less than 1-2% of the periodic filter water;
5. Low dosage and low operating cost: due to the structure of the filter bed and the characteristics of the filter material itself, the dosage of flocculant is 1/2 ~ 1/3 of that of conventional technology. With the increase of cycle water yield, the operation cost of tons of water is also reduced.
6, small area: the same amount of water, the area of the sand filter is less than 1/3;
7. Strong adjustability. The parameters such as filter precision, filter capacity and filter resistance can be adjusted according to the needs.
8, filter material durable, life more than 20 years.
