双膜耦合系统(MBR-MBfR)处理低碳氮比污水实验研究  

Experimental Study on the Treatment of Low Carbon Nitrogen Ratio Wastewater by Double Membrane Coupling System(MBR-MBfR)

作　　者：范玉荣 董堃 陈宇超 张毅 张英慧 李海翔[1,2,3] FAN Yurong;DONG Kun;CHEN Yuchao;ZHANG Yi;ZHANG Yinghui;LI Haixiang(College of Environmental Science and Engineering,Guilin University of Technology;Guangxi Modern Industry College of Ecology and Environmental Protection,Guilin University of Technology;The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control:Guilin 541006,China)

机构地区：[1]桂林理工大学环境科学与工程学院 [2]桂林理工大学生态环保现代产业学院 [3]广西环境污染控制理论与技术重点实验室,广西桂林541006

出　　处：《水处理技术》2023年第12期132-137,共6页Technology of Water Treatment

基　　金：广西自然科学基金(2022GXNSFFA035033);国家自然科学基金(51878197);广西环境污染控制理论与技术重点实验室研究基金(桂科能2301Z003)。

摘　　要：为解决实际低碳氮比废水高效脱氮问题,以MBR-MBfR双膜耦合系统为研究对象,探究不同C/N双膜系统的脱氮效果。结果表明,当C/N=2时,其对NO_(3)^(-)-N、NH_(4)^(+)-N、TN及COD的协同去除效果最好,COD、NO_(3)^(-)-N、NO_(2)^(-)-N、NH_(4)^(+)-N、TN的去除率分别达到79.16%、78.40%、88.41%、77.04%和77.31%,是适合MBR-MBfR双膜耦合系统的最佳碳氮比。用于处理实际废水经过20 d的运行,结果表明,COD、NO_(3)^(-)-N、NH_(4)^(+)-N、TN去除率分别达到75.88%、80.02%、76.42%和80.92%。达到较好的双膜耦合效果,为反应器高效脱氮以及去除含有有机碳的低C/N废水提供参考和技术支持。高通量测序结果表明:(1)作为氨氧化菌(AOB)的亚硝基单胞菌属和作为潜在反硝化菌的脱硝单胞菌在MBR中同时富集;(2)在属水平上,在MBR的三个阶段中,起主要作用的氨氧化菌是Candidatus_Kuenenia,丰度比例分别为9.97%、12.50%和4.25%,对MBfR来说,起主要作用的菌属为Hydrogenophaga(氢噬胞菌属)为氢自养反硝化的优势菌属,其在三个阶段所占丰度比例分别为2.50%、12.47%、9.98%。In order to solve the problem of high efficiency nitrogen removal of wastewater with low carbon nitrogen ratio,the MBR-MBfR double membrane coupling system is taken as the research object to explore the nitrogen removal effects of different C/N double membrane systems.The results show that when C/N=2,its synergistic removal effect on NO_(3)^(-)-N,NH_(4)^(+)-N,TN and COD is the best,and its removal rates on COD,NO_(3)^(-)-N,NO_(2)^(-)-N,NH_(4)^(+)-N and TN respectively reach 79.16%,78.40%,88.41%,77.04%and 77.31%,It is the best C/N ratio for MBR MBfR double membrane coupling system.After 20 days of operation,the results show that the removal rates of COD,NO_(3)^(-)-N,NH_(4)^(+)-N and TN are 75.88%,80.02%,76.42%and 80.92%respectively.It can achieve good double membrane coupling effect,and provide reference and technical support for efficient nitrogen removal of reactor and removal of low C/N wastewater containing organic carbon.High throughput sequencing results showed that:(1)nitrosomonas as ammonia oxidizing bacteria(AOB)and denitrifying bacteria as potential denitrifying bacteria were enriched in MBR at the same time;(2)at the genus level,the ammonia oxidizing bacteria that plays a major role in the three stages of MBR are Candidatus_Kuenenia,for MBfR,the dominant bacteria is Hydrogenophaga,which accounts for 2.50%,12.47%and 9.98%of the abundance in the three stages respectively.

关 键 词：MBR-MBfR双膜耦合 厌氧氨氧化 氢自养反硝化 低碳氮比废水 

分 类 号：TQ028.8[化学工程]