Comprehensive treatment of latex wastewater and resource utilization of concentrated liquid

作     者：Shichao Tian Yuming Tu Rujie Li Yufan Du Zhiyong Zhou Fan Zhang Zhongqi Ren Shichao Tian;Yuming Tu;Rujie Li;Yufan Du;Zhiyong Zhou;Fan Zhang;Zhongqi Ren

作者机构：State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijing 100029China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2023年第57卷第5期

页      面：183-192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] 0815[工学-水利工程] 

基　　金：supported by the National Natural Science Foundation of China (22125802 and 22108012) Natural Science Foundation of Beijing Municipality (2222017) Fundamental Research Funds for the Central Universities (BUCTRC-202109) 

主　　题：Latex wastewater Resource utilization Forward osmosis Reverse osmosis Concentrated liquid 

摘      要：Latex wastewater is a kind of refractory organic wastewater containing high concentrations of organics and ammonia *** this work,the combined process of forward osmosis(FO)and reverse osmosis(RO)was designed to treat the latex wastewater in the whole process,achieving the water recovery rate of 99%and basically no waste discharge after the catalytic oxidation *** turbidity of the latex wastewater was decreased to below 1 NTU by microfiltration pretreatment,and then using MgCl_2 worked as the draw solution for FO process to treat the latex *** operation conditions including adding acid or scale inhibitor as the pretreatment methods were conducted to improve the treatment performance of the combined *** the treatment of the whole process,the concentration of COD was less than 20 mg·L^(-1),the concentration of NH_3-N was less than 10 mg·L^(-1),and the concentration of TP was less than 0.5 mg·L^(-1)for the treated latex *** water quality met standards of industrial water reuse after the complete analysis of the treated latex wastewater,meanwhile,useful substances of L-Quebrachitol(L-Q)were successfully extracted from the concentrated ***,the combined process of FO and RO could realize the efficient treatment and reuse of latex wastewater,which provided with some important guidance on the industrial application.