串联活性污泥系统处理制药废水工艺研究  

Process investigation on activated sludge in-series system treating pharmaceutical wastewater

作　　者：蔡萌萌[1] 赵庆良[1] 刘志刚[1] Chua Hong 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]香港理工大学土木及结构工程系,香港九龙红磡

出　　处：《哈尔滨工业大学学报》2007年第4期576-580,共5页Journal of Harbin Institute of Technology

摘　　要：通过小试模拟完全混合推流式活性污泥曝气池（串联CMAS工艺）处理哈尔滨某制药生产废水,优化实际工程的工艺运行参数,研究各污染物在系统中的去除特性.在F/M为0.1~0.2或0.8~1.5 gCOD/（gMLSS.d）、SRT为8~10 d、DO为1~3 mg/L、水温为27~34℃的运行条件下,串联CMAS工艺系统中污泥沉降性较好,对COD和TSS去除率分别大于90%和95%.活性污泥的平均比摄氧速率SOUR平均=49.5 mg/（gMLSS.h）,表明串联CMAS曝气池中的污泥具有良好的活性.当水力停留时间HRT相同时,增加CMAS曝气池数有利于污泥沉降.该工艺对COD的生物降解规律遵循ρ（CODe）=ρ（COD0）×e^-a t的数学模型.将模拟试验结论应用于实际工程的运行结果表明,该系统运行高效稳定,出水指标满足《污水综合排放标准（GB8978-1996）》的一级标准.A lab-scale study on completely-mixed activated sludge aeration tank in-series （CMAS in-series） treating pharmaceutical wastewater from a Harbin pharmacy plant was conducted to optimize the practical fullscale plant operation parameters and to explore the removal of various pollutants. In CMAS in-series system, such operational conditions like F/M = 0. 1 - 0. 2 or 0. 8 - 1.5 gCOD/（ gMLSS · d）, SRT = 8 - 10 d, ρ （DO） =1 -3 mg/L and temperature 27 -34 ℃ benefited sludge settling ability and obtained the removal rate of COD and TSS over 90% and 95%, respectively. Specific oxygen uptake rate of SOURavg = 49.5 mgO2/ （ gMLSS ber of C · h） indicated good sludge activity in the aeration tanks of CMAS in-series. Increasing the tank number of MAS in-series system favored sludge settling ability under the same HRT. Bio-degradation of COD in this system followed a mathematical model ofp （CODe） = ρ （COD0） × e ^-at. Practical project operation per- formance from the simulation results showed that the system was effective and steady, and the effluent met the first level criteria of the Integrated Wastewater Discharge Standard （GB8978 -1996）.

关 键 词：制药废水 完全混合推流式活性污泥曝气池 工艺运行优化 COD降解规律模型 

分 类 号：X703[环境科学与工程—环境工程]