再生水回用于景观水体磷营养盐对叶绿素a和藻密度的影响研究  

The effect of phosphorus nutrients on chlorophyll a and algal density in landscape water supplied with reclaimed water

作　　者：杨英杰[1] 王明智[1] 李谦[1] 伦中财[1] 范改娜[2] 祝贵兵[2] 

机构地区：[1]北京京城中水有限责任公司,北京100164 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085

出　　处：《给水排水》2009年第S2期112-115,共4页Water & Wastewater Engineering

基　　金：国家自然科学基金项目(20877086);中国科学院知识创新工程青年人才领域前沿项目(RCEES-QN-200706);中国科学院生态环境研究中心青年人才专项基金;环境水质学国家重点试验室自由探索课题专项经费(08Y04ESPCR)

摘　　要：以北京市某再生水厂出水为研究对象,人工配制各浓度梯度的营养盐,试验研究补给再生水后景观水体水质指标的变化,重点考察磷对叶绿素a和藻密度的影响情况。试验结果表明叶绿素a和藻密度主要受水体中氮磷比和磷酸盐浓度的影响。在磷酸盐保持在1 mg/L以下,氨氮在2mg/L以下,硝酸盐氮在8 mg/L以下,将再生水一次性补给景观水体是完全可行的,不会产生藻类暴发;当磷酸盐浓度增加至1.5 mg/L,藻密度将显著增加。In this study the effluence of a Beijing reclaimed water plant was chosen to investigate the variations in quality indicators of landscape after the supplies of renewable water, especially focused on effects of nitrogen nutrients (ammonia nitrogen, nitrate nitrogen) on the chlorophyll a and algal density. The experimental results showed that the concentration of chlorophyll a and algal density were mainly influenced by concentration of phosphate and N/P ratio in water. With phosphate concentrations below 1 mg/L, the ammonia concentration below 2 mg/L, and the concentration of nitrate nitrogen below 8 mg/L, supplying landscape water with the reclaimed water is feasible and does not cause serious algal outbreak. But the algal density would increase drastically with the increasing of phosphate concentration to 1.5 mg/L.

关 键 词：再生水 磷酸盐 景观水体 叶绿素A 藻密度 

分 类 号：X52[环境科学与工程—环境工程]