混凝-臭氧-硝化集成技术处理黑臭水样效果研究  

Study on the Treatment Effect of Black-Odorous Waterbodies Treated by the Integrated Technology of Coagulation-Ozone-Nitrification

作　　者：王棚 周禹名 武睿 陶益 WANG Peng;ZHOU Yuming;WU Rui;TAO Yi(Shenzhen Key Laboratory of Ecological Remediation and Carbon Sequestration,Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China)

机构地区：[1]清华大学深圳国际研究生院,深圳市生态修复与固碳增汇重点实验室,广东深圳518055

出　　处：《水处理技术》2024年第11期74-79,共6页Technology of Water Treatment

基　　金：国家水专项(2017ZX07202002);深圳市科技计划项目(WDZC2020081916354900,JCYJ20200109142822787,JSGG20201102171401006,ZDSYS20220606100806014)。

摘　　要：黑臭水体中颗粒态与溶解态致黑臭物质并存,采用单一技术难以有效消黑除臭。本研究以实际黑臭水体样品为对象,考察微砂强化PAC混凝-臭氧氧化-生物硝化集成技术对典型致黑臭物质的去除效果。单元工艺处理效果试验结果表明,添加0.8 g/L微砂进行强化混凝处理,对水体浊度和色度去除率提高了11.0%和11.1%。采用臭氧氧化能快速去除致臭物质二甲基三硫醚(DMTS),臭氧投加量8.2 mg/L条件下处理后水样中总DMTS及溶解态DMTS的去除率分别达92%与100%。采用100 mL/min曝气0.5 h的生物硝化处理,氨氮去除率达到52.2%以上。集成技术处理效果试验结果表明,水中固体悬浮物含量(SS)、DMTS和氨氮去除率分别高达87.5%、60%和92.2%及以上,处理后的水质指标均低于水体黑臭的限值。该集成技术在黑臭水体的治理中具有一定的应用潜力。Black-odor-causing substances in the particulate and dissolved states coexist in black-odorous waterbodies,and it is difficult to eliminate them effectively using a single technology.In this study,the integrated technology of microsand-enhanced PAC coagulation,ozone oxidation,and biological nitrification was investigated for the removal of typical black-odor-causing substances in actual black-odorous waterbodies.The results of the unit process treatment effect showed that the removal rates of water turbidity and color were increased by 11.0%and 11.1%after adding 0.8 g/L microsand to the coagulation treatment.The oxidized dose of 8.2 mg/L ozone could rapidly remove the odorcausing dimethyl trisulfide(DMTS),resulting in the removal rate of total and dissolved DMTS in water samples reaching 92%and 100%,respectively.The removal rate of ammonia nitrogen reached more than 52.2%by biological nitrification treatment with 100 mL/min aeration for 0.5 h.The results show that the integrated technology removes above 87.5%,60%and 92.2%of suspended solids(SS),DMTS and ammonia nitrogen,respectively,which were lower than the limit value of black-odorous waterbodies.This integrated technology has certain potential for application in the treatment of black-odorous waterbodies.

关 键 词：黑臭水体 微砂强化PAC混凝 臭氧氧化 生物硝化 技术集成 

分 类 号：X522[环境科学与工程—环境工程]