A Full-Scale Study On Phosphorus Removal From Biological A/O Process Enhanced By Zeolite
In a full-scale test, zeolite enhanced the biological nitrification, but the nitrate of returning mixed-flow in the anaerobic process inhibited the release of the polyphosphate accumulation microorganisms and had little effect on the phosphorus removal in the biological A/O process. It was suggested that we use the method of chemical phosphorus removal in the process. Aluminium and ferric salts had a good effect on chemical phosphorus removal, and had no correlation with locations. When adding Al2 (SO4)3·18H2O, the molar ratio of the TP and Al at 1:1.5, the rate of phosphorus removal was more than 85％. When adding FeSO4·12H2O, the molar ratio of the TP and Fe at 1:1, the rate of phosphorus removal was more than 80％. When adding 20mg/L FeSO4·12H2O and 30mg/L Al2 (SO4)3·18H2O in the anaerobic process, the mixed phosphorus removal agent could remove nearly 90％ of phosphorus in a biological A/O process enhanced by zeolite. At the same time, the content of phosphorus could reach the effluent discharge standard.
chemical phosphorus removal A/O nitrogen removal process zeolite pilot scale test
Guan-Wen Cheng Shan Xu Rui-Ping Wang Zhi-Chao Wu Fei-Juan Zhang Xiang-Feng Huang
Dept.of Resource and Environmental Engineering Guilin University of Technology.Guilin,China State Key Lab of Pollution Control and Resource Reuse Tongji University,Shanghai.Shanghai,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）