重要环境因子对小球藻去除污水中氮磷的影响  

Effects of Environmental Factors on Nitrogen and Phosphorus Removal by Chlorella vularis in Wastewater

作　　者：周连宁[1,2] 吴锋[1] 赵振业[1,2] 王波[1] 

机构地区：[1]深圳市深港产学研环保工程技术股份有限公司,深圳518057 [2]深圳市海岸与大气研究重点实验室,深圳518057

出　　处：《生物技术进展》2015年第1期60-65,共6页Current Biotechnology

基　　金：深圳市战略新兴产业发展专项资金项目(CXZZ20120618111150009;ZDSY20120618162015166)资助

摘　　要：对小球藻去除污水中氮磷的性能进行了研究,考察了初始氮磷浓度、氮磷比、光照条件和p H等因素对其去除效率的影响。结果表明,在初始氮磷浓度分别在35 mg/L和7 mg/L以下时去除率接近100%;氮磷比为5∶1和10∶1,小球藻第4 d基本完全去除了污水中的氨态氮,而氮磷比对小球藻的除磷能力没有显著影响;在初始氨态氮或总磷浓度相同的条件下,光照条件（L/D为24 h∶0 h和12 h∶12 h）对氮磷去除效果的无明显差异性（P〉0.05）,而随着氮磷浓度的增加,连续光照条件逐渐展现出去除氮磷的优势;小球藻在p H 7~8范围内对氨态氮的去除率最佳,p H 5~7范围内,对总磷的去除率最佳。ChloreUa vularis was employed to remove nitrogen and phosphorus from wastewater. The effects of initial NH4＋-N and TP concentrations, N/P ratios, light/darkness ratios and pH on the removal of NH＋4-N and TP were evaluated. The results showed that Chlorella vularis could almost 100% remove NH4＋-N and TP, when initial concentrations of NH4＋-N and TP were no more than 35 mg/L and 7 mg/L. Under the N/P ratios of 5：1 and 10：1, Chlorella vularis could completely remove NH4＋-N within 4 d ,while the N/P ratios almost has no effect on Chlorella vularis to removal of TP. At the same initial concentrations of NH4＋-N or TP, the IJD ratios of 24 h ：0 h and 12 h ： 12 h had no significantly effect on removal of NH4＋-N and TP by Chlorella vularis. Along with the initial concentrations increasing, Chlorella vularis showed better removal effect of NH4＋-N and TP under the L/D ratio of 24 h ：0 h. The optimal pH range for removal of NH4＋-N and TP by Chlorella vularis were pH 7～8 and pH 5～7, respectively.

关 键 词：小球藻 氨态氮 总磷 污水处理 

分 类 号：X703[环境科学与工程—环境工程]