[藻类生物膜对氮磷去除效率的研究]

[Study on efficiency of nitrogen and phosphorus removal by algal biofilm].

作者信息

Ma Pei-Ming, Kuang Qi-Jun, Ling Xiao-Huan, Hu Zheng-Yu

机构信息

Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.

出版信息

Huan Jing Ke Xue. 2007 Apr;28(4):742-6.

PMID:17639930

Abstract

Cultivating algal biofilm on nitrogen (N) and phosphorus (P) in waters presents an alternative to control eutrophication. Under laboratory conditions, efficiency on nitrogen and phosphorus removal from synthetic wastewater, secondary effluent and eutrophic lake water by algal biofilm was assessed. Algal biofilm was mainly composed of blue-green algal species Oscillatoria princeps. During a 5-day treatment, for synthetic wastewater, secondary effluent and eutrophic lake water, removal rates of TN were 57.1%, 94.5% and 93.8%, respectively, removal rates of TP were 93%, 73% and 79%, respectively. The dried algal production were 3.7 - 7.2 g x m(-2)x d(-1), and the TKN and TP of algal biomass were 5.7% - 7.2% and 0.78% - 2.44%, respectively. Recovery of nutrients in harvested algal biomass accounted for about 20% - 39% for N and 65% - 82% for P.

摘要

通过在水体中培养藻类生物膜来去除氮（N）和磷（P）是控制富营养化的一种替代方法。在实验室条件下，评估了藻类生物膜对合成废水、二级出水和富营养化湖水的氮磷去除效率。藻类生物膜主要由蓝藻物种头状颤藻组成。在为期5天的处理过程中，对于合成废水、二级出水和富营养化湖水，总氮（TN）的去除率分别为57.1%、94.5%和93.8%，总磷（TP）的去除率分别为93%、73%和79%。藻类干产量为3.7 - 7.2 g x m(-2)x d(-1)，藻类生物量中的凯氏氮（TKN）和总磷分别为5.7% - 7.2%和0.78% - 2.44%。收获的藻类生物量中氮的养分回收率约为20% - 39%，磷的养分回收率为65% - 82%。