碱性发酵液投加率对A^2O脱氮除磷效果的影响  被引量:2

Effect of Adding Alkaline Fermented Liquid Proportion on A^2O Denitrification and Phosphorus Removal Efficiency

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作  者:彭永臻[1] 邢立群[1] 金宝丹[1] 王淑莹[1] 

机构地区:[1]北京工业大学北京市水质科学与水环境恢复工程重点试验室,北京市污水脱氮除磷处理与过程控制工程技术研究中心,北京100124

出  处:《北京工业大学学报》2015年第10期1584-1590,共7页Journal of Beijing University of Technology

基  金:国家自然科学基金资助项目(51178007)

摘  要:为解决城市污水处理厂进水碳源不足、生物脱氮除磷效果较差及剩余污泥产量较大的问题,采用不断提高碱性发酵液投加率的方式,考察了碱性发酵液对A^2O系统脱氮除磷效果的影响.研究结果表明:随着碱性发酵液投加率的不断增加,A^2O系统进水pH值不断增大,COD和NH_4^+-N去除率基本不变,而TN和PO_4^(3-)-P的去除率略微下降.外碳源全部由发酵液提供后,系统COD、NH_4^+-N、TN和PO_4^(3-)-P的去除率分别为87.00%、98.86%、79.73%和80.92%,NH_4^+-N、TN和PO_4^(3-)-P的去除量较单独投加乙酸钠时分别提高24.93%、19.05%和86.08%.In order to solve the problem of shortage of carbon source,the poor biological denitrification,and large production of waste activated sludge(WAS) in the urban sewage treatment plants,the effects of alkaline fermented liquid as external carbon source on biological denitrification and phosphorus removal efficiency were studied with the method of adding different ratio of alkaline fermented liquid into A 0system.The results showed that with the amount of alkaline fermented liquid additive increasing,the inflow pH value of A 0 system increased,and the COD and NH/-N removal efficiency basically remain unchanged,but the TN and PO4^3--P removal efficiency slightly decreased.When all the external carbon source were provided by fermented liquid,COD,NH4+-N,TN and PO43--P removal rate were 87.00% ,98.86% ,79.93% and 80.92% respectively,and NH4+-N.TN and PO43--P remove quantity were improved by 24.93% 、19.05% and 86.08% respectively than single additive sodium acetate.

关 键 词:剩余污泥(WAS) 碱性发酵液 脱氮除磷 短链脂肪酸(SCFAs) 

分 类 号:X703[环境科学与工程—环境工程]

 

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