Study on inactivation performance comparison of five preoxidation treatment processes with polluted raw water

The inactivation effects of humic acid and lactose peptone culture solution content are inspected with individual application process of chlorine, chloramines and potassium permanganate, and with combined application process of potassium permanganate with chlorine or chloramines. A pretreatment process is approached with better adaptability to polluted water. The results showed that the advantage of combined application processes of potassium permanganate with chlorine or chloramines are more superior with the contents of organic matters increased, compared with the individual application process of chlorine, chloramines and potassium permanganate. The inactivation efficacy of pretreatment is more effectively improved with the combined application processes of potassium permanganate with chlorine or chloramines, especially a great quantity of organic nitrogen compound are existed. Therefore, the influence of organic matters to inactivation efficacy can be reduced with the pre-oxidation processes of combined application of potassium permanganate with chlorine or chloramines in raw water pretreatment process with serious organic pollution. The multi-protection action to pathogenic microbe is enhanced in the pretreatment process.