缓释氧材料对黑臭水体的水质改善效果研究  

Study of Slow Oxygen-Releasing Materials onWater Quality Improvement for Black OdorousWater

作　　者：李梦丹 丁爱中[1] 薛栋 贾文娟 程莉蓉[1] 李诗刚 LI Mengdan;DING Aizhong;XUE Dong;JIAWenJuan;CHENG Lirong;LI Shigang(Beijing Normal University,College of Water Science,Beijing 100875,China;Techand Ecological Environment Co.,Ltd,Guangdong 518040,China)

机构地区：[1]北京师范大学水科学研究院,北京100875 [2]铁汉生态环境股份有限公司,广东深圳518040

出　　处：《水处理技术》2022年第5期114-118,共5页Technology of Water Treatment

基　　金：国家重点研发计划(2018YFC1800905);北京市自然科学基金(Z170004);深圳市铁汉生态环境股份有限公司资助。

摘　　要：采用新型缓释氧材料处理城市黑臭水体。中试实验过程中缓释氧材料放置于释氧渗透反应格栅中,研究缓释氧材料对实际城市黑臭水体的处理效果。中试结果表明新型缓释氧材料可以明显改善水体的污染情况。在实验周期为20 d,水力停留时间为8 h的情况下,黑臭水体流经释氧渗透反应格栅后,水体溶解氧(DO)浓度升高,好氧微生物的活性增强,水中好养微生物降解有机污染物速率提高,水体中污染物化学需氧量(COD)、氨氮(NH_(3)-N)、总氮(TN)以及总磷(TP)的去除率分别为21.2%、12.0%、15.20%、58.1%;水体中微生物优势菌群发生变化,在属水平上,hgcI_clade、CL500−29_marine_group和12up为优势物种。用冗余分析(RDA)探讨了环境因子与微生物群落结构之间的关系,DO、TN、TP、NH_(3)-N是影响微生物群落结构的主要环境因子。The novel oxygen-releasing material was used to treat the black and odorous water.During the pilot test,the slow-release oxygen material was placed in the oxygen-releasing permeation reaction grid to study its treatment effect on the urban black and odorous water.The pilot test results show that the novel slow oxygen-releasing material can significantly improve the pollution of water.In the case of a test period of 20 d and a hydraulic retention time of 8 h,the result showed that the DO concentration of the water increases after the black odorous water flows through the oxygenreleasing permeation reaction grid,which enhances the activity of the aerobic microorganisms and improves the degradation rate of organic pollutants by the microorganisms.The removal rates of COD,NH_(3)-N,TN,and TP were 21.2%,12.0%,15.20%,and 58.1%,respectively.The results showed that the microbial structure in the water had obviously changed and it was strongly dominated by hgcI_clade、CL500−29_marine_Group and 12up at the genus level.The results of redundancy analysis(RDA)for the relationship between physic-chemical factors and microbial community structures showed that DO、TN、TP、NH_(3)-N were the main environmental factors for the microbial community.

关 键 词：缓释氧材料 DO pH 释氧渗透反应格栅 微生物 

分 类 号：X52[环境科学与工程—环境工程]