固定化藻菌去除海水冲厕污水中氮磷的实验研究  

Experimental study on removing nitrogen and phosphorus from seawater toilet-flushing sewage by immobilized Chlorella and bacteria

作　　者：寇希元[1] 张晓青[1] 张雨山[1] 王静[1] 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《环境工程学报》2011年第12期2703-2706,共4页Chinese Journal of Environmental Engineering

基　　金："十一五"国家科技支撑计划课题(2006BAB03A08);中央级公益性科研院所基本科研业务费资助项目(G2007-14;2009-T04)

摘　　要：采用海藻酸钠凝胶包埋固定小球藻和活性污泥,对冲厕海水污水(模拟)中的氮磷污染物进行去除实验。结果表明,在藻菌比为2∶1,固定化藻菌对氮磷的去除率分别达到95.5%和92.2%。在N/P为10时,固定化藻菌对冲厕海水污水中氮磷的去除效果最好。25～30℃时固定化藻菌对氨氮和磷的去除率最好,温度过高时藻和细菌细胞的活性受到抑制。固定化藻菌体系处理冲厕海水污水的较佳pH范围在6.5～8.5之间。Chlorella and activated sludge were immobilized by sodium alginate to remove nitrogen and phosphor- us from seawater toilet-flushing sewage. The results indicated that when the ratio of algae to bacteria was 2：1, the re- moval efficiencies of nitrogen and phosphorus by immobilized Chlorella-bacteria reached 95.5% and 92. 2%, respec- tively. When nitrogen-to-phosphorus ratio was 10, the removal efficiencies of nitrogen and phosphorus were the high- est. The removal efficiencies were better at 25 ℃ to 30℃. The activity of algae and bacteria is inhibited at highly temperature. The favorable pH of immobilized algae and bacteria for seawater toilet-flushing sewage is 6.5 ~ 8.5.

关 键 词：固定化藻菌 海水冲厕污水 脱氮除磷 

分 类 号：X703.1[环境科学与工程—环境工程]