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氮和磷是生物的重要营养源,随着化肥和农药普遍使用,天然水体中氮、磷含量急剧增加。水体富营养化加剧,对水生生物和人体健康产生很大的危害。而常规活性污泥工艺对总氮、总磷的去除率仅在10%~30%之间,远不能达到国家排放标准。因此,研究开发高效、经济的生物脱氮除磷工艺已成为当前水污染控制领域的研究重点和热点。生物脱氮除磷工艺A2/O工艺此工艺中,厌氧池进行磷的释放和氨化,缺氧池进行反硝化脱氮,好氧池用来去除BOD、吸收磷以及
Nitrogen and phosphorus are important biological sources of nutrients. With the widespread use of fertilizers and pesticides, the nitrogen and phosphorus contents of natural water bodies increase sharply. Water eutrophication intensified, aquatic organisms and human health have a great impact. The conventional activated sludge process for total nitrogen, total phosphorus removal rate of only 10% to 30%, far from meeting the national emission standards. Therefore, research and development of efficient and economic biological nitrogen and phosphorus removal process has become the focus of research and hotspot in the field of water pollution control. Biological nitrogen and phosphorus removal process A2 / O process In this process, the anaerobic tank phosphorus release and ammoniation, anaerobic denitrification denitrification tank, anaerobic tank used to remove BOD, phosphorus absorption and