The application study of Anoxic-submerged Oxic Membrane Bioreactor(A-SOMBR) treating landfill leachate

垃圾渗滤液是垃圾储存和卫生填埋的产物，是一种有毒有害的高浓度有机废水，其控制和治理已经成为当前环境保护领域一项迫切的研究课题。膜生物反应器（MBR）处理工艺的研究、开发和应用已成为高浓度有机废水处理技术领域的重要发展方向。本论文从小试到中试，系统开展了缺氧-浸没式好氧膜生物反应器（A-SOMBR）处理垃圾渗滤液的特性研究，并考察了膜污染的过程。 A-SOMBR小试试验研究结果表明：在污泥培养驯化过程中，COD平均去除率高达92%，其中A段（吸附缺氧）的贡献平均占23.6%，O段（好氧）平均占50.7%，膜的贡献平均占15.3%；试验确定各操作参数最佳值依次为：DO为2-4mg/L，MLSS为...Landfill leachate from a composing field of a finished municipal waste landfill contains high concentration organic matters and toxic substrates. It has been one urgent task that the pollution control and treatment of landfill leachate for environmental engineers in nowadays. The research development and application of membrane bioreactor has gotten more attention in treating high concentration or...学位：工学硕士院系专业：化学化工学院材料科学与工程系_材料学学号：20043602

The research of micro-electrolysis process composed of discarded iron slag and coke pretreating landfill leachate

［中文文摘］研究表明,废铁屑和焦炭微电解是预处理垃圾渗滤液的一种有效方法,可去除垃圾渗滤液COD、色度和腐殖酸等污染物质,改善其可生化性、降低负荷,为后续生化处理创造良好的条件。通过静态正交实验确定废铁屑和焦炭最佳投加体积比为1∶3;最佳反应pH值为4;动态实验中,反应时间为1 h时,COD和色度去除率分别高达68%和91%;BOD/COD从0.3提高到0.5左右。［英文文摘］The study shows that micro-electrolysis process is an effective method to pretreat landfill leachate.It can remove much of COD,chroma,humic acid and can improve leachate′s biodegradable ability to create good conditions for following biochemical treatment.The optimal volume ratio of iron slag and coke is(1∶3) by orthogonal array experiments;the optimum pH is 4.In continuous feed experiments,the removal rates of COD and chroma could reach 68% and 91% respectively;BOD/COD is increased from 0.3 to about 0.5

A PILOT SCALE EXPERIMENT ON VC-MAKING WASTEWATER TREATMENT BY MEMBRANE BIO-REACTOR

主要介绍了某维生素制造企业废水系统运行情况以及MBR改造工艺的启动方法和在不同工艺条件下的运行情况。通过比较2种工艺条件,确定污泥浓度控制在8000mg/L,溶解氧控制在2mg/L,水力停留时间14h,系统对CODCr的平均去除率能达到90·20%,氨氮的平均去除率能达到89·95%。It is maily introduced the performance of a wastewater plant of a VC-producing company and the start-up method of the VC wastewater treated by the MBR process and the running under different conditions of the system.Through comparing two different process conditions,when the sludge concentration is controlled at 8 0000 mg/L ,DO controlled at 2 mg/L and the HRT controlled at 14 hours,the average COD_ Cr removal rate will be 90.2% and the NH_3-N removal rate will be 89.95%

PILOT RESEARCH ON UASB-CASS REFORM PROCESS WITH MBR FOR TREATMENT OF BINARY ACID WASTEWATER

介绍了直链二元酸废水原有处理系统运行情况及使用MBR改造工艺的启动以及在无排泥情况下的8种运行工况。通过比较分析,确定污泥浓度控制在7000～9700mg/L、溶解氧为2～3mg/L时,HRT可缩短至2d,MBR工艺出水水质稳定良好,COD、NH4+-N均值分别为79mg/L和1.6mg/L,优于污水综合排放标准(GB8978-1996)的二级排放标准。In this paper is introduced the operating condition of the original UASB-CASS for treating linear binary acid wastewater, and eight operating conditions of its reform process with MBR in case of starting and non-sludge discharging. Through analysis and comparison, it is shown that, when sludge concentration was 7000～9700mg/L,DO was 2～3mg/L,HRT can be shorten to 2 d, the effluent quality of MBR is better,COD,NH4+-N average values are 79 mg/L and 1.6 mg/L respectively, being superior to the second class discharging standard of "Sewage Comprehensive Discharging Standard"(GB8978-1996)