有机碳源浓度对反硝化除磷的影响研究  

Effect of carbon source concentration on denitrifying phosphorus removal

作　　者：张红[1] 张朝升[1] 荣宏伟[1] 张可方[1] 

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》2006年第6期73-76,共4页Journal of Guangzhou University:Natural Science Edition

基　　金：广东省科技攻关项目(2004B33301006);广州市科技计划项目(2004J1-C0051);广东省自然科学基金博士启动基金(5300438)

摘　　要：广州地区城市污水碳量严重偏低、碳氮磷比例失调,其同步脱氮除磷一直是个难题,为此以SBR法就有机碳源浓度对反硝化除磷的影响进行研究.试验表明:在进水COD为180 mg.L-1的低碳运行下,反硝化除磷系统能够长期稳定运行,除磷效率达到99.2%;随着进水COD浓度从80 mg.L-1提高到240 mg.L-1,厌氧释磷量增加,缺氧反硝化速率与吸磷速率增加;缺氧段存在的COD浓度越高,对缺氧吸磷的抑制作用越大,随着缺氧段有机物浓度的增加,反硝化速率变大,吸磷速率变小,说明缺氧段存在外碳源会优先支持反硝化作用,抑制PHB作为内碳源的使用.The disproportion of C,N and P and low carbon source in the urban wastewaer in Guangzhou region are always a puzzle for nitrogen and phosphorus removal. Based on this, this paper studied the effect of carbon source concentration on denitrifying phosphorus removal by using SBR. The experiments showed that denitrifying phosphorus removal could keep steady under COD = 180 mg·L^-1 influence ,the efficiency of phosphorus removal could be 99.2%. By increasing the concentration of carbon source from 80 mg·L^-1 to 240 mg·L^-1 ,the quantity of phosphorus release in anaerobic phase has increased, the denitrifying rate and phosphorus uptake rate in anoxic phase have increased either. Phosphorus uptake was inhibited heavier with the higher carbon source concentration in anoxic phase. High carbon source concentration in anoxic phase has increased denitrifying rate but decreased the rate of phosphorus uptake, the residual carbon source would be used in denitrifying in prior, but inhibited the use of PHB as endogenous carbon source.

关 键 词：反硝化除磷 COD 厌氧放磷 缺氧吸磷 

分 类 号：X703[环境科学与工程—环境工程]