净水污泥固定化硫氧化菌去除河道中AVS污染的试验研究  

Removal of AVS Pollution in River by Sulfur Oxidizing Bacteria Immobilized on Water Purification Sludge

作　　者：潘俊[1] 张萧汉 PAN Jun;ZHANG Xiaohan(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang,China,110168)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2024年第1期179-186,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家重点研发计划项目(2018YFC1801203)。

摘　　要：目的 研究净水污泥固定化硫氧化菌去除河道中的酸可挥发性硫化物污染方法,为净水污泥资源化利用提供一种新的思路。方法 通过高温焙烧的方法制备净水污泥固定化载体,采用XRD、SEM、BET对载体进行表征,使用净水污泥、绿沸石、活性炭3种载体对硫氧化菌进行固定化,分析其对底泥中AVS的去除效果以及固定化效果的影响,并通过高通量测序技术分析其对微生物种群变化的影响。结果 净水污泥固定化载体的最佳焙烧温度为600℃,无论是单一载体,还是固定化硫氧化菌,净水污泥组对于AVS的去除效果均要优于绿沸石和活性炭;同时硫氧化菌在温度为30℃、pH=6、固定化时间为24 h条件下的固定化效果最好;净水污泥固定化硫氧化菌的加入有利于降解硫化物优势菌种的群居,抑制了硫酸盐还原菌的生长繁殖。结论 净水污泥固定化硫氧化菌能有效去除河道中的AVS污染,降低底泥生物种群的多样性,有利于去除AVS优势菌种的群聚,抑制硫酸盐还原菌的繁殖,促进水体黑臭环境的改善。In this study,sulfur oxidizing bacteria immobilized on water purification sludge to remove Acid Volatile Sulfide(AVS)in a river channel was studied.There were three immobilized carriers.One was made of water purification sludge by high temperature calcination.Other two immobilized carriers were green zeolite and activated carbon.Three immobilization bodies were prepared by commercially available sulfur oxidizing bacteria immobilized on above three carriers were characterized by XRD,SEM and BET.The performances and influence factors of the above three immobilization bodies on AVS removal were analyzed.At the same time,the effect of the immobilization bodies on changes in microbial populations in sediments was analyzed by high-throughput sequencing technology.The results showed that the optimal roasting temperature of the water purification sludge carrier was 600°C,and its AVS removal effect was best among three carriers.The AVS removal effect of its immobilization body was best among three immobilization bodies.The optimal conditions for the immobilization body were temperature of 30°C,pH of 6,and immobilization time of 24h.Immobilization of sulfur oxidizing bacteria on water purification sludge facilitates the aggregation of dominant sulfide-degrading bacteria and inhibits the growth and reproduction of sulfate-reducing bacteria.So immobilized sulfur oxidizing bacteria in water purification sludge can effectively remove AVS pollution in a river channel and improve the black and odor environment of sediment.

关 键 词：微生物固定化 净水污泥 AVS 硫氧化菌 

分 类 号：TU99[建筑科学—市政工程] X522[环境科学与工程—环境工程]