两种藻类对水体氮、磷去除效果  

Removal Efficiency of Nitrogen and Phosphorus in Wastewater by Two Species of Algae

作　　者：凌晓欢[1] 况琪军[1] 邱昌恩[1] 胡征宇[1] 

机构地区：[1]中国科学院水生生物研究所/淡水生态与生物技术国家重点实验室

出　　处：《武汉大学学报（理学版）》2006年第4期487-491,共5页Journal of Wuhan University:Natural Science Edition

基　　金：国家高技术研究发展计划(863)项目资助(2002AA601021);国家重点基础研究发展规划(973)项目资助(2002CB412309)

摘　　要：借助人工装置和露天水池,通过分析实验水体中氮、磷元素浓度的变化,研究了实验室条件下一种绿球藻(Chlorococcumsp.)和露天小型生态系统中寡枝刚毛藻(Cladophora oligoclonaKütz).对污水中氮磷营养的去除效果.结果显示:绿球藻在高浓度氮和磷的污水中生长良好并维持较高的氮磷去除率,在6天处理期间,人工污水中总溶解性氮、硝酸盐氮、氨氮、总溶解性磷的去除率分别达到46.2%,37.8%,98.4%和79.3%;在对天然湖泊水的处理中,绿球藻对总溶解性磷的去除率在第5天为79.2%.室外条件下,该刚毛藻通过吸收水体中的氮、磷营养维持自身正常生长代谢,从而降低水体的电导率和改善水质.根据本次研究,结果两种被试藻类均可作为污水处理用藻类,其中Chlorococcumsp.适合用于静态水体的修复与改善,Cladophora oligoclona适合于流动水体的减负与治理.By analyzing the concentration changes of nitrogen and phosphorus in experimental water, both a laboratory study and an outdoor experiment have been conducted for testing the removal efficiency of nutrients by algae. The test alga for the laboratory study is Chlorococcurn sp. and for the field experi ment is Cladophora oligoclona Kütz. respectively. The results show that Chlorococcurn sp. grow quite well and have high removal rates of nitrogen and phosphorus in the sewage with very high concentrations of nitrogen and phosphorus. The removal rates of total soluble nitrogen, nitrate, ammonia and total soluble phosphorus from synthetic sewage were 46.2%, 37.8%, 98.4% and 79.3% in six days. The removal rate of total soluble phosphorus from crude lake water by the alga was 79.2 % in five days. Cladophora oligoclona can grow normally and absorb relatively on nitrogen and phosphorus from the natural water in outdoor conditions. It plays an important role on reducing the specific conductance and improving the wa ter quality. According to the results obtained in this study and referring to other relational research re ports, both Chlorococcum sp. and Cladophora oligoclona have ability for removing nutrients from wastewater. Chlorococcurn sp. is suitable for rehabbing and improving in static water and Cladophora oli goclona is suitable for treating and protecting in flowing water.

关 键 词：绿球藻 刚毛藻 氮 磷 水质 净化 

分 类 号：X171[环境科学与工程—环境科学]