混合型碳源和除磷剂改善冬季污水氮磷去除效果的研究  

Mixed Carbon Source and Chemical Phosphorus Remover improve Effect of Nitrogen and Phosphorus Removal of Sewage in Winte

作　　者：王磊 Wang Lei(Cscec Aecom Consultants Co.,Ltd.,Shandong Branch,Qingdao 266000,China)

机构地区：[1]中国市政工程西北设计研究院有限公司山东分公司,山东青岛266000

出　　处：《山东化工》2023年第14期264-267,共4页Shandong Chemical Industry

摘　　要：针对北方某污水处理厂冬季出水氮磷去除效果不佳的问题,通过外加混合型碳源和除磷剂提高脱氮除磷效果。本研究对不同配比的混合型碳源反硝化速率进行了研究,并研究了水厂投加混合碳源和化学除磷剂后对氮磷的去除效果。通过反硝化小试实验和分析水厂进出水氮磷变化,得出结论:C与N物质的量比7时,以1∶5.5物质的量比混合的葡萄糖和乙酸钠为外加碳源,对活性污泥反硝化能力提升效果最好;在水厂污水中以C与N物质的量比10投加混合型碳源强化生物脱氮,TN去除率提高了25.67%。投加35 mg·L^(-1)的聚合FeCl_(3)和20 mg·L^(-1)的聚合AlCl_(3)辅助除磷,TP去除率提高了10%。出水氮磷达到一级A标准。结论是混合型碳源和化学除磷剂可以有效地帮助冬季低温污水脱氮除磷,在实际应用中具有良好的经济效益。To save the problem of a sewage treatment plant in North China that the removal effect of nitrogen and phosphorus from effluent in winter is not good,adding mixed carbon source and phosphorus removal to improve the effect of nitrogen and phosphorus removal.In this study,the denitrification rate of mixed carbon source with different proportion of mixed carbon source was studied and the remover effect of nitrogen and phosphorus by adding mixed carbon source and chemical phosphorus remover was studied.Through denitrification experiment and analysis of the change of nitrogen and phosphorus in and out of the sewage of water plant,it is concluded that when C/N=7,the best effect to increase the denitrification capacity of the activated sludge is the 1∶5.5 concentration ratio of glucose and sodium acetate as the external carbon source.The TN removal rate was increased by 25.67%by adding mixed carbon source with C/N=10.Adding 35 mg·L^(-1) polymerized FeCl_(3) and 20 mg·L^(-1) polymerized AlCl_(3) assisted phosphorus removal,the TP removal rate increased by 10%,the effluent nitrogen and phosphorus reached the first class A standard.The conclusion is that the mixed carbon source and chemical phosphorus remover can effectively help the nitrogen and phosphorus removal of low temperature sewage in winter,and have good economic benefits in practical application.

关 键 词：改良型AAO 混合型碳源 化学除磷剂 反硝化 

分 类 号：X703[环境科学与工程—环境工程]