水解酸化-接触氧化工艺处理医院污水的效果

THE EFFECT ON TECHNICALLY TREATING HOSPITAL SEWAGE BY HYDROLYTIC ACIDIFICATION-CONTACT OXIDATION

[目的]了解水解酸化—接触氧化和二氧化氯消毒对医院污水的净化效果。[方法]于污水处理前和接触氧化池处理后及二氧化氯消毒后分别取水样测定pH值、悬浮物、CODcr、BOD5、氨氮、粪大肠菌群及余氯。[结果]经接触氧化池处理后,悬浮物、CODcr、BOD5、氨氮去除率分别为88.20%、93.52%、95.80%、73.70%。经二氧化氯消毒后,水中粪大肠菌群的去除率为99.97%。[结论]该消毒的方法对医院污水净化效果良好,可达到GB8978-1996《污水综合排放标准》一级标准。

[Objective] To understand the purifying effect on technically treating hospital sewage and disinfection by hydrolytic acidification-contact oxidation and chlorine dioxide. [Methods] The water samples were taken separately before and after the sewage treatment by contacting oxidation-pool and the disinfection with chlorine dioxide to determine the PH value, the suspension, CODcr, BOD5, ammoniacal nitrogen, fecal coli group and residual chlorine. [ Results ] After treating by contacting oxidation-pool, the disposal rates of the suspension, CODcr, BOD5, ammoniacal nitrogen were 88.20%, 93.52%, 95.80%, 73.70% respectively. After the disinfection with chlorine dioxide, the disposal rate of fecal coli group in water was 99.97%. [Conclusion] The effect of this disinfection method is good to hospital sewage purification. It achieves Level 1 standard of Comprehensive Emissions Standard for Sewage （GB8978-1996） .