高温制浆废水嗜热菌-混凝系统处理效能影响因素  

Factors Influencing the Performance of Thermophilic Bacteria and Coagulation Combined System in Treating High-temperature Pulping Wastewater

作　　者：舒彬 李志刚 王海[3] 石烁辉 匡发国 周炯[3] 周健[3] SHU Bin;LI Zhi-Gang;WANG Hai;SHI Shuo-hui;KUANG Fa-guo;ZHOU Jiong;ZHOU Jian(Chongqing Design Group Co.Ltd.Municipal Design Institute,Chongqing 400020,China;Southwest Municipal Engineering Design&Research Institute of China,Chengdu 610299,China;Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment,Chongqing University,Chongqing 400045,China)

机构地区：[1]重庆设计集团有限公司市政设计研究院,重庆400020 [2]中国市政工程西南设计研究总院有限公司,四川成都610299 [3]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2024年第17期92-97,共6页China Water & Wastewater

基　　金：重点产业共性关键技术创新专项(cstc2017zdcy-zdyfx0081)。

摘　　要：以高温制浆废水为处理对象,构建制浆废水嗜热菌生物膜处理系统,考察了有机负荷、DO浓度、pH对制浆废水嗜热菌生物膜系统处理效能的影响,以及嗜热菌-混凝组合系统的处理效能。结果表明,制浆废水高温(50℃)嗜热菌生物膜系统与常温(30℃)系统的处理效能无显著差异,但微生物菌群结构存在显著差异。有机负荷、DO浓度、pH对高温制浆废水嗜热菌系统去除COD的影响显著,而对去除色度的影响不显著。在温度为50℃、有机负荷为0.4 kg/(m^(3)·d)、DO为3.0 mg/L的条件下,嗜热菌生物膜系统对COD、色度的去除率分别可达到68.49%、23.27%;嗜热菌-混凝组合系统对COD和色度的总去除率分别为84.98%和85.36%,其中嗜热菌生物处理单元对COD和色度的去除分担率分别为68.58%和23.36%,混凝单元对COD和色度的去除分担率分别为16.40%和62.00%。制浆废水中引起色度的类黑精和类木质纤维素等物质主要通过混凝单元去除。A thermophilic bacteria biofilm treatment system was established for treating high-temperature pulping wastewater.The influences of organic load,DO and pH on the treatment efficiency of the thermophilic bacteria biofilm system and polluants removal in the combined system of thermophilic bacteria and coagulation were explored.There was no significant disparity in the treatment efficacy between the high-temperature(50℃)thermophilic bacteria biofilm treatment system and the normal-temperature(30℃)system.However,a significant difference existed in the composition of the microbia community.The influences of organic load,DO and pH on the removal of COD in high-temperature pulping wastewater by the thermophilic bacteria system were remarkable,yet the impacts on the removal of chromaticity were insignificant.Under the conditions of temperature of 50℃,organic load of 0.4 kg/(m^(3)∙d),and DO of 3.0 mg/L,the removal rates of COD and chromaticity in the thermophilic bacteria biofilm system were 68.49%and 23.27%,respectively.The total removal rates of COD and chromaticity by the thermophilic bacteria and coagulation combined system were 84.98%and 85.36%,respectively.The removal rates of COD and chromaticity were 68.58%and 23.36%by the thermophilic bacteria,and 16.40%and 62.00%by the coagulation unit,respectively.Substances like melanoidin and lignocellulose that caused chromaticity in pulping wastewater were predominantly removed by the coagulation unit.

关 键 词：制浆废水 高温 嗜热菌 混凝 影响因素 

分 类 号：TU992[建筑科学—市政工程]