超声波处理回流剩余污泥对SBR工艺的污泥减量效能  

Effect of excess sludge reduction in SBR by sludge return after ultrasonic treatment

作　　者：沈会山[1,2] 胡勇有[1,2] 王广华[1,2] 梁树焜[1,2] 何向明[3] 谢义忠[3] 李凌云[3] 

机构地区：[1]华南理工大学环境科学与工程学院教育部重点实验室,广州510006 [2]华南理工大学制浆造纸工程国家重点实验室,广州510640 [3]南海发展股份有限公司,南海528200

出　　处：《环境工程学报》2012年第6期2077-2081,共5页Chinese Journal of Environmental Engineering

基　　金：广东省科技计划资助项目(2007A032302001)

摘　　要：在SBR中试系统中,采用较高声能密度较短时间的超声波处理剩余污泥后回流至系统连续运行20 d的方式进行污泥减量,通过分析测定系统MLSS、累计排泥量以及系统出水水质指标,考察了系统污泥减量效果及污泥回流对系统污水处理效果的影响。结果表明,对SBR系统2/3的剩余污泥用声能密度为1 W/mL的超声波预处理6 min后回流至SBR系统。SBR系统最终需处置的污泥量减少了45.64%,获得了理想的污泥减量效果。污泥回流后SBR系统对SS、COD、TN以及NH4+-N的去除效果均无明显变化,仅出水TP含量略高于对照的SBR,出水水质仍能达到《城镇污水处理厂污染物排放标准》(GB18918-2002)一级B标准。In this study, ultrasonic with high density in short time was used to reduce excess sludge production in SBR pilot scale system for 20 days. By analyzing the MLSS of system, the amount of accumulated excess sludge and the quality of the effluent, the effect of this process on excess sludge production and the effluent quality of system were investigated. The results showed that about 2/3 of residual sludge was returned to SBR system after 6 min of ultrasonic treatment with ultrasonic density of 1 W/mL, the amount of ultimate residual sludge reduced about 45.64% , obtaining an ideal sludge reduction effect. No significant change was observed for the removal efficiency of SS, COD, TN and NH4 -N in the effluent when compared with the control reactor, but TP was slightly higher than that of the control reactor, the effluent quality of system can reach the standard B of level one of Urban Sewage Treatment Plant Emission Standards （GB18918-2002）.

关 键 词：超声波 SBR 剩余污泥 减量化 

分 类 号：X703.1[环境科学与工程—环境工程]