Xiangjiang River Water Low Temperature And Low Turbidity Water Treatment Pilot Study

Many problems which water source is facing are the quality of water source. The average available quantity of water source per people is extremly low in China. The water quality is even worse. By now, the tradiontial process of water treatment is not suitable. Finding a new floccutant for low temperature and low turbidity water is an economy method among all kinds of water purification technologies.This experiment made some primary lab reserches about the characteristics of flocculants. The followings are the contents:(1) Jar experiment: through jar experiment, flocculants are screened out for low temperature and low turbidity water taken from Xiangjiang river; discussing and research on coagulation mechanism; determining the quantity of flocculant.(2) Production experiment: make sure of the dates acquired from lab experiment and jar test to run the typical water plant. By contrasting the effect of polyaluminum chloride and polymeric ferric silicate-sulfate, it can be concluded that polymeric ferric silicate-sulfate is suitable for low template and low turbidity water.The results indicates that when treating slightly polluted source water of XiangJiang river, pre- polymerization can eliminate the influence of ingredients in water. Ferric hydrolysate have neutralisation and adsorption. Silicic giant molecule behave flocculation and bridge. It is found that the sizes and density of the floe was increasing and the residual turbidity of the settled water was reduced evidently.