Rapid control of black and odorous substances from heavilypolluted sediment by oxidation:Efficiency and effects

作     者：Kun Li Min Yang Jianfeng Peng Ruiping Liu Tista Prasai Joshi Yaohui Bai Huijuan Liu 

作者机构：Key Laboratory of Drinking Water Science and TechnologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of SciencesBeijing 100039China Center for Water and EcologyState Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China Nepal Academy of Science and TechnologyKhumaltarLalitpur 44700Nepal 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2019年第13卷第6期

页      面：91-101页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.51820105011,51578537 and 51778603) the Chinese Academy of Sciences(No.QYZDY-SSWDQC004) 

主　　题：Oxidants Heavily polluted sediment Black and odorous substances Release behaviors Microorganism 

摘      要：The control ofblack and odorous substances in sediments is of crucial importance to improve the urban ecological landscape and to restore water environments *** this study,chemical oxidation by the oxidants NaClO,H2O2,and KMnO4 was proposed to achieve rapid control of black and odorous substances in heavily-polluted *** indicate that NaClO and KMnO4 are effective at removing Fe(II)and acid volatile *** removal efficiencies of Fe(II)and AVS were determined to be 45.2%,94.1%,and 93.7%,89.5%after 24-h exposure to NaClO and KMnO4 at 0.2 mmol/g,***,rapid oxidation might accelerate the release of pollutants from *** release of organic matters and phosphorus with the maximum ratios of 22.1%and 51.2%was observed upon NaClO oxidation at 0.4 mmol/***,the introduction of oxidants contributed to changes in the microbial community composition in *** oxidation by NaClO and KMnO4 at 0.4 mmol/g,the Shannon index decreased from 6.72 to 5.19 and 4.95,whereas the OTU numbers decreased from 2904 to 1677 and 1553,***,H2O2 showed a lower effect on the removal of black and odorous substances,pollutant release,and changes in sediment *** study illustrates the effects of oxidant addition on the characteristics of heavily polluted sediments and shows that chemical oxidants may be an option to achieve rapid control of black and odorous substances prior to remediation of water environments.