水力负荷和C/N比对玉米芯固体碳源SND处理低碳城市污水的影响  

Effect of hydraulic load and C/N ratio on corn stalk solid carbon source SND treatment in low-city urban sewage

作　　者：张立秋[1,2] 王登敏 李淑更[3,2] 吕玮 胡雪柳 何培芬 雷志娟 ZHANG Li-qiu;WANG Deng-min;LI Shu-geng;LYU Wei;HU Xue-liu;HE Pei-fen;LEI Zhi-juan(a.School of Civil Engineerin;b.School of Civil Engineerin;c.Key Laboratory for Education Ministry for Water Quality andConservation of the Pearl River Delta,Guangzhou University,Guangzhou 510006,Chin)

机构地区：[1]广州大学土木工程学院,广东广州510006 [2]广州大学珠江三角洲水质安全与保护教育部重点实验室,广东广州510006 [3]广州大学环境科学与工程学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》2018年第3期69-75,共7页Journal of Guangzhou University:Natural Science Edition

基　　金：国家自然科学基金资助项目(51478127;51708140);广州市科技计划资助项目(201510010051);广州大学研究生创新研究资助计划(2017GDJC-M42)

摘　　要：采用玉米芯填料固体碳源生物膜反应器,应用同步硝化反硝化(SND)技术处理低碳氮比城市污水,考察不同水力负荷和C/N比对系统脱氮效果的影响,并对玉米芯挂膜前后表面形态进行分析.结果表明,在水力负荷为0.045 m3·m-2·h-1时,NH+4-N和TN平均去除率分别为92.16%和91.18%;当进水C/N比控制在0~12时,出水CODCr浓度均在50 mg·L-1以下,TN平均去除率在79.63%以上,脱氮效果随进水C/N比的增加而提升;通过电镜扫描表明玉米芯是一种较好的固体碳源生物膜反应器填料,适合低碳氮比城市污水的脱氮处理.A solid carbon source biofilm reactor with corncob as filler was used to treat low C/N ratio wastewater by simultaneous nitrification and denitrification （SND） technology. The effect of different hydraulic loadings and C/N ratio on the denitrification effect of the system was investigated. The surface morphology of the corncobs was detected before and after the biofilm formation. The results show that the average removal rates of NH4^＋-N and TN are 92.16% and 91.18%, respectively, at the hydraulic loading of 0.045 m^3·m^-2 ·h^-1 . When the influent C/N ratio is controlled between 0 and 12, the effluent COD Cr concentration is below 50 mg·L^-1 , and the average TN removal rate is above 79.63%. The denitrification effect increases with the increase of the C/N ratio. Scanning electron microscopy shows that corn cob is a better solid carbon source biofilm reactor packing, suitable for denitrification treatment of urban sewage with low carbon and nitrogen ratio.

关 键 词：固体碳源 SND 水力负荷 C/N比 

分 类 号：X703[环境科学与工程—环境工程]