水资源保护2016，Vol.32Issue(5)：108-114,122,8.DOI:10.3880/j.issn.1004-6933.2016.05.021
强化混凝技术对南淝河季节性污染物去除效果研究
Study on removal efficiency of enhanced coagulation technology for treatment of seasonal pollutants from Nanfeihe River
摘要
Abstract
Algae in the estuary of the Nanfeihe River show high concentrations in the summer and autumn, and the concentration of NH+4-N is extremely high in the winter. Based on these characteristics, we studied the efficiency of the enhanced coagulation technology in removing algae and NH+4-N, and applied this technology to an on-site coagulation and sedimentation system by the river. The results show that polyaluminum chloride ( PAC) had the highest removal rate (76%) of algae when the coagulants were applied alone;the removal rate increased markedly when cationic polyacrylamide ( CPAM ) was applied as coagulant aid and the removal rates of algae all reached 99%. However, they had little effect on the removal of NH+4-N. Joint use of polyaluminum ferric chloride ( PAFC) and CPAM had the highest removal rate (7. 54%) of NH+4-N. Clay mineral was also chosen to increase the removal rate of NH+4-N. The attapulgite modified by NaCl and MgCl2 was used in combination with CPAM, and the removal rate of NH+4-N reached 85. 65%. PAFC+CPAM was selected as a pharmacy prescription used in the on-site coagulation system. The mean removal rate of algae was 88. 64% in the summer and autumn and that of NH+4-N was 24. 49% in the winter.关键词
强化混凝/藻类/NH+4-N/凹凸棒/去除率Key words
enhanced coagulation/algae/ammonia nitrogen/attapulgite/removal rate分类
资源环境引用本文复制引用
王丹,龚梦丹,陈义飞,丁士明,孙琴..强化混凝技术对南淝河季节性污染物去除效果研究[J].水资源保护,2016,32(5):108-114,122,8.基金项目
国家水体污染控制与治理科技重大专项(2012ZX07103-002) （2012ZX07103-002）
