Decolorization of azo dyes with high salt concentration by salt-tolerant mixed cultures under anaerobic conditions

作     者：GUO Jian-bo ZHOU Ji-ti WANG Dong WANG Jing YU Hui SONG Zhi-yong 

作者机构：School of Environmental and Biological Science and Technology Dalian University of Technology Dalian 116023 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2005年第17卷第6期

页      面：984-988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：TheCrossCenturyTalentFundofNationalEducationCommitteeofChina(No.1992-2) 

主　　题：anaerobic decolorization hyper-salinity salt-tolerant mixed cultures 

摘      要：Because the lack of detailed study of biological decolorization in high salt dye wastewater, it is still difficult to evaluate the biological treatment on high-salinity dye wastewater. The experiments were carried out to study the salt-tolerant bacteria, which is useful in the treatment of high-salinity colored wastewater. Simulated wastewater containing 5-150 g/L salt （NaCI） and 50-2000 mg/L Reactive Brilliant Red K-2BP was treated with three salt-tolerant mixed cultures （CAS, TAS, DSAS）, which were under a gradually acclimated procedure. With the increase of concentrations of salt and dye, the decolorization became low. The abilities of decolorization of dyes wastewater by three mixed cultures （CAS, TAS, DSAS） were studied, CAS and DSAS mixed cultures showed more active for the treatment of high-salinity colored wastewater than TAS mixed cultures. The results suggested that there might be a simple process for the high salt wastewater treatment, which could be incorporated into conventional activated sludge plants.