吴淞江微污染水源水处理工艺的比较研究

Research on treatment of slightly polluted raw water of Wusong River

采用预臭氧生物活性炭滤池、生物接触预氧化、PAC吸附预处理三种工艺对吴淞江微污染水源水处理进行研究:常温下,臭氧投加量2mg/L,预臭氧生物活性炭滤池对氨氮的去除率维持在70%以上,出水NH3-N约1mg/L,CODMn平均去除率34.16%;生物接触预氧化对氨氮去除率可达80%以上,但CODMn平均去除率只有7.6%;PAC对色度及臭味有良好的去除效果,但对其他物质去除率较低。三种工艺相比,作为水厂改造或备用应急方案,预臭氧生物活性炭滤池为最佳选择。

Pre-ozone-biological activated carbon （03-BAC）, biological oxidation （BO） and powdered activated carbon （PAC） processes are researched experimentally to treat the slightly polluted raw water taken from Wusong River. For process of O3-BAC, at condition of normal room-temperature and ozone dosage 2 mg/L, the removal rates of ammonia nitrogen and CODM. are 700/4o more and 34.16% mean respectively, with residual ammonia nitrogen 1 mg/L in outlet water. For BO process, the removals of ammonia nitrogen and CODMn are 80% more and 7. 6 % only respectively. PAC has good removal abilities on color and odor, but not well effective for other pollutants. Compared to the other two processes, we think that as countermeasures of waterworks upgrading or for alternate emergency, O3-BAC might be the best choice.