硫自养反硝化协同固定化微生物技术修复城市黑臭水体  

Sulfur autotrophic denitrification synergistic immobilization microbial technology to remediate urban black and odorous water

作　　者：赵建强 佘健 李柏林[1] 陈世杰 夏凯 刘思韵 裴昌盈 汪凯 ZHAO Jianqiang;SHE Jian;LI Bolin;CHEN Shijie;XIA Kai;LIU Siyun;PEI Changying;WANG Kai(School of Resource and Environmental Engineering,Wuhan University of Technology,Wuhan Hubei 430070;Central-Southern China Safety&Environment Technology Institute Co.,Ltd.,Wuhan Hubei 430051;CCTWG Chongqing Engineering(Group)Co.,Ltd.,Chongqing 400016)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]中南安全环境技术研究院股份有限公司,湖北武汉430051 [3]中煤科工重庆设计研究院(集团)有限公司,重庆400016

出　　处：《环境污染与防治》2024年第5期631-637,644,共8页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.42277055);中煤科工重庆设计研究院(集团)有限公司科技项目(No.2022-04-51);2022年襄阳市科技计划项目(No.2022SF01)。

摘　　要：固定化微生物技术可促进城市黑臭水体中氮磷污染物去除,但硫自养反硝化协同固定化微生物技术修复黑臭水体研究较少。通过向改性载镧膨润土基复合微生物菌剂(La-Bt基复合菌剂)中添加经S_(2)O_(3)^(2-)驯化培养的硫自养反硝化菌(NR-SOB),试图引入硫自养反硝化协同固定化微生物技术修复黑臭水体。在La-Bt基复合菌剂投加量为1.5 g/L时,向黑臭水体中分梯度投加不同浓度NR-SOB,研究NR-SOB协同La-Bt基复合菌剂去除黑臭水体污染物效果,并通过高通量测序分析底泥微生物群落结构变化。结果表明,当NR-SOB投加量为0.3 g/L时,对黑臭水体和底泥处理效果较好:上覆水氨氮、TN和TP去除率分别为87.42%、69.85%和71.11%;底泥酸可挥发性硫(AVS)去除率为34.76%,底泥TN和TP去除率分别为45.22%、45.04%;实验结束时底泥中厚壁菌门(Firmicutes)相对丰度从11.76%降至9.84%,硫杆菌属(Thiobacillus)相对丰度达2.82%,氮硫去除相关微生物菌属比例提升约0.95%。Immobilized microbial technology can promote the removal of nitrogen and phosphorus pollutants in urban black and odorous water,but there is little research on the remediation of black and odorous water by related sulfur autotrophic denitrification synergistic immobilization microbial technology.By adding sulfur autotrophic denitrifying bacteria(NR-SOB)cultured by S_(2)O_(3)^(2-) domestication to the modified lanthanum bentonite-based microbial agent(La-Bt based complex agent),sulfur autotrophic denitrification synergistic immobilization microbial technology was introduced to remediate black and odorous water.Addition different dosages of NR-SOB to black and odorous water under dosage of 1.5 g/L La-Bt based complex agent,the synergistic effect of NR-SOB and La-Bt based complex agent in removing pollutants in black and odorous water was studied,and the changes of microbial community structure of sediment were analyzed by high-throughput sequencing.The results showed that when the NR-SOB dosage was 0.3 g/L,the compound microbial inoculant had a good effect on the treatment of black and odorous water and sediment.The removal efficiency of ammonia nitrogen,TN and TP from overlying water was 87.42%,69.85%and 71.11%,respectively.The removal efficiency of AVS from sediment was 34.76%,and the removal efficiency of sediment TN and TP was 45.22%and 45.04%,respectively.At the end of the experiment,the relative abundance of Firmicutes in the sediment decreased from 11.76%to 9.84%,the relative abundance of Thiobacillus reached 2.82%,and the proportion of nitrogen and sulfur removal of microbial bacteria increased by about 0.95%.

关 键 词：固定化微生物技术 城市黑臭水体 硫自养反硝化 复合微生物菌剂 脱氮除硫 

分 类 号：X52[环境科学与工程—环境工程]