The Experimental Studies Of Coagulation- Filters Technology To Process The City Two Levels Of Water Leakage

In China, the Expansion of urbanization has badly burdened the urban water environment, where as the development of water economic quire more water. Water reclamation and reuse can lessen the burden of water environment and can be as table stable secondary freshwater resource as well, so it is an important new tendency to develop technology of water reclamation and reuse in the field of wastewater treatment.Therefore, this topic take the Kunming fifth dirt water works two levels of water leakage as the research object, supplies water in there sources day by day short situation in view of at present, uses two levels of water leakage depths processing to supplement the surface water source water the idea, this article attempts uses the coagulation - to filter the craft to process two levels of water leakage, namely mainly carries on the pretreatment through the coagulation to two levels of water leakage, then and slag does through the quartz sand filters the material separately to carry on filters processing.While satisfies the water leakage water quality, reduces coagulation the amount used, reduces the cost, The key point is this experimental coagulation partial research. The experiment indicated that, coagulation will carry on duplicate matches not only can enhance the coagulation effect, moreover will be able to reduce the cost. Under this test condition compound coagulation best throws the dose is: Gathers the aluminum, the aluminums sulfate and PAM duplicate matches: (10+20+0.1) mg/L; Gathers the aluminum, the aluminum chloride and PAM (15 +15 + 0. 15) mg/L; the order for first throws adds inorganically coagulation, latter throws adds organically coagulation. This coagulation processes two levels of water leakage to the turbidity, COD, TP removes the effect to be better, is worth promoting the application. But it is lower to ammonia nitrogen removing rate.The direct filtration craft processing water leakage suits the water quality lowly to request to return to the water used use.The quartz sand does filters the material the coagulation top precipitated - filters the craft processing water leakage TP, COD_cr has achieved《Our country Surface water Environment quality standard (GB3838-2002)》two kind of water quality standards. The ammonia nitrogen water leakage water quality does not gather the stipulation.The slag does filters the material the coagulation to precipitate -filters the craft, the water leakage water quality is extremely ideal, COD_cr, TP, NH3-N has achieved《Our country Surface water Environment quality Standard (GB3838-2002)》two kind of water quality standards. Filters 6 hour when the water quality may take supple mentors country surface water source water the substitution water source. This craft economy is better, belongs makes use of waste, to be worth further studying and the promotion.