A Combined System for Biological Removal of Nitrogen and Carbon from Nylon-6 Production Wastewater

作     者：刘芳 刘国华 田晴 张曼 陈季华 

作者机构：College of Chemistry and Chemical EngineeringChina University of PetroleumDongying College of Environmental Science and EngineeringDonghua University 

出 版 物：《Journal of Donghua University(English Edition)》 (东华大学学报（英文版）)

年 卷 期：2007年第24卷第6期

页      面：700-706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：Shanghai Science and Technology Committee(No.042312045) Shanghai Post-doctor Fund 

主　　题：Nylon-6 production wastewater hydrolysis acidification submerged biofilm reactor biological nitrogen removal 

摘      要：A combined system consisting of hydrolysis acidification, denitrification and nitrification reactors was used to remove carbon and nitrogen from the nylon - 6 production wastewater, which was characterized by good biodegradability and high nitrogen concentration. The influences of Chemical Oxygen Demand （COD） in the influent, recirculation ratio, Hydraulic Residence Time （HRT） and Dissolved Oxygen （DO） concentration on the system performances were investigated. From results it could be seen that good performances have been achieved during the overall experiments periods, and COD, Total Nitrogen （TN）, NH^＋ -N and Suspended Solids （SS） in the effluent were 53, 16, 2 and 24 mg· L^-1, respectively, which has satisfied the first standard of wastewater discharge established by Environmental Protection Agency （EPA） of China. Furthermore, results showed that operation factors, viz. COD in the influent, recirculation ratio, HRT and DO concentration, all had important influences on the system performances.