Study On Grey Water Reuse Of No.1 Sewage Treatment Plant In Huainan

Because the shortage of water resource and the pollution of water is worsening, the water reuse technology has developed very rapidly since its inception. As a stable source of domestic sewage, water adequate and good biodegradability is very suitable for the reclaimed water source. Treated water, can be applied to agricultural and industrial purposes, municipal use, green land irrigation and supplementary of waterways and other non-drinking areas. Research on urban wastewater reuse can enhance the economic benefits of water resources utilization.In this paper, study on reclaimed wastewater reuse of urban domestic sewage water of through coagulation tests and activated carbon adsorption tests. In the coagulation tests, using Al2(SO4)3,PAC and this these coagulant and polyacrylamide (PAM) mixtures tested, study on these two coagulants for turbidity removal by changing the coagulant type,coagulant dosage,pH,intensity of reaction and reaction time. The results showed that:individual inorganic coagulant dosing for coagulation tests, PAC removal efficiency of turbidity is better than Al2(SO4)3; inorganic coagulant and PAM compound, significantly improve turbidity removal in sewagewater, PAC and PAM combination better than PAM and Al2(SO4)3 combination turbidity removal rate.In the activated carbon static adsorption experiments, by the change of pH,adsorption time and the amount of activated carbon studied activated carbon properties of adsorption, and to analyze the test results from the dynamics。The results showed that:activated carbon adsorption of Zn2+ of the best pH value of 6.5,the adsorption time was about 2 days and the adsorbentdosage was 0.1500g/L which was obtained at 25℃.Activated carbon adsorption of Zn2+ appears to be the first order kinetics and adsorption rate controlled by diffusion from the inside. In the dynamic adsorption experiments, by the change of the flow rate, column high, pH and other methods to study activated carbon properties of adsorption, The results showed that:Zn2+ removal rate of activated carbon on the best whit a flow rate of 1m/s,height 1m and pH 6. Activated carbon regeneration experiments, the effect of alkali alone is better than with the acid-base joint and with acid.In the experimental data on the basis of the project, combining actual and in the back with a design.