摘要：With the enhancing of people's environmental awareness in recent years, especially after the stressing of the sustainable development, the treatment of sludge water and sludge in the waterworks is increasingly at a premium, and the environmental departments have also raised higher and higher requirements on the emission and treatment of production waste in the waterworks. Many of Chinese newly built large-scale water-works and expansion and reconstruction projects of water works have also begun to think about the problem of sludge water and sludge treatment, with different process flows adopted. The major purpose of this paper is to treat the sewage via low temperature process. Effect of DO, internal reflux ratio r, external reflux ratio R, sludge age SRT, sewage temperature and pH on COD removal is studied. The result shows that the best COD removal was 95.8% and TP removal is 90.7%.
关键词：Sewage treatment;Industrial park;Process optimization;Low temperature
