Hybrid zeolite-based ion-exchange and sulfur oxidizing denitrification for advanced slaughterhouse wastewater treatment  

作　　者：Shuang Tong Shaoxiang Zhang Yan Zhao Chuanping Feng Weiwu Hu Nan Chen 

机构地区：[1]Beijing Key Laboratory of Meat Processing Technology,China Meat Research Center,Beijing 200068,China [2]Department of Environmental Science and Engineering,Beijing Academy of Food Sciences,Beying 100068,China [3]School of Water Resources and Environment,China University of Geosciences(Beijing),Beijing 100083,China

出　　处：《Journal of Environmental Sciences》2022年第3期219-230,共12页环境科学学报（英文版）

基　　金：supported by the National Key Research and Development Program of China (No.2016YFD0501405);the China Postdoctoral Science Foundation (No.2018M630245);the Beijing Postdoctoral Research Foundation (No.2017-ZZ-137).

摘　　要：The discharge of slaughterhouse wastewater(SWW)is increasing and its wastewater has to be treated thoroughly to avoid the eutrophication.The hybrid zeolite-based ion-exchange and sulfur autotrophic denitrification(IX-AD)process was developed to advanced treat SWW after traditional secondary biological process.Compared with traditional sulfur oxidizing denitrification(SOD),this study found that IX-AD column showed:(1)stronger ability to resist NO_(3)^(-) pollution load,(2)lower SO_(4)^(2-) productivity,and(3)higher microbial diversity and richness.Liaoning zeolites addition guaranteed not only the standard discharge of NH_(4)^(+)-N,but also the denitrification performance and effluent TN.Especially,when the ahead secondary biological treatment process run at the ultra-high load,NO_(3)-N removal efficiency for IX-AD column was still~100%,whereas only 64.2%for control SOD column.The corresponding average effluent TN concentrations for IX-AD and SOD columns were 5.89 and 65.55 mg/L,respectively.Therefore,IX-AD is a promising technology for advanced SWW treatment and should be widely researched and popularized.

关 键 词：Sulfur oxidizing denitrification(SOD) Ion-exchange Advanced slaughterhouse wastewater(SWW)treatment Combined bio-activity carriers Denitrifying bacteria 

分 类 号：X792[环境科学与工程—环境工程]