Micro Contamination The Xiangjiang Source Water To Strengthen The Coagulation Treatment Process Pilot Study

Water pollution by organic matter is a prominent problem for the current water quality to face. In organic matter pollution, there may exist some pollutant what leads to spontaneous mutation, malformation and even cancer. Therefore, the important research subjects of water-supply disposal should include the follow: strengthening the regular technique of disposing tap-water, lowering the pollution of organic matter and improving the water quality.This paper is a stage report of experimental research of strengthening coagulation-flocculation disposal technique and also a sub-subject of research of "strengthening water disposal technique of trace organic matter pollution of Xiang river water source factory" .On the basis of extensive and profound analysis of the up-to-now research achivements of both at home and abroad about the strengthening coagulation-flocculation disposal technique of some related trace organic matter pollution of raw water, being aimed at the Xiang River water source and the manufactured water quality, this paper has carried out the experimental research of strengthening coagulation-flocculation. The experiment shows that adopting the joint technique of using both potassium permanganate and powder activated carbon is really a kind of economic and effective method for us to transform the outmoded water factory and to improve the efficiency of getting rid of the filth of the water, potassium permanganate , as a kind of strong oxidant, is a satisfying matter to degrading the organic matter. Powder activated carbon has a better absorbing function for the molecule organic matter in water and it is also beneficial to getting rid of the colour and the flavour. When we use both of them mentioned above in the regular technological process of purifying the water at the same time and make them function interactively, the better effect will be shown.When raw water CODMl, is 4.03mg/L, turbidity is 30NTU, UV254 is 0.33, NHrN is 0.46mg/L, putting into 20mg/L polymeric aluminium of chlorination, the water quality parameter of sendiment water will respectively be :2.72, 1.86, 0.088, 0.28, and the removing percentage will respectively be 32.5%, 93.8%, 73.3%, 39.1%. If adopting the joint technique of using both potassium permanganate and powder actived-carbon, when the inputting amount of potassium permanganate is 0.2mg/L, the inputting amount of polymeric aluminium of chlorination is 20mg/L, and the inputting amount of powder activated carbon is lOmg/L, the water quality parameter of sedimentary water will respectively be :1.87, 1.43, 0.03, 0.20, the water quality parameter of filtered water will respectively be 0.93, 0.81,0.03, 0.19, and the removing percentage will respectively be 76.9%, 97.3%, 90.9%, 58.7%.The experiment of strengthening coagulation-flocculation shows: the coagulation-supporting agents, coagulants, the inputting order of coagulants and the inputting amount of potassium permanganate will be of great effect on UV254, NHj-N and the turbidity removal. The best effect will be shown when both the potassium permanganate and the polymeric aluminium of chlorination are inputted into the raw water at the same time and 30 seconds later, powder activated carbon is also inputted into after it.