印染助剂2025，Vol.42Issue(12)：29-34,6.
印染废水与碱减量废水分质预处理-生化耦合工艺优化
Optimization of biochemical coupling process for separate pretreatment of printing and dyeing wastewater and alkali reduction wastewater
林宝春 1陈学勤 1钟永芬1
作者信息
- 1. 杭州益水环境工程有限公司,浙江 杭州 311200
- 折叠
摘要
Abstract
Due to the significant differences in pollutant composition,the mixed treatment of printing and dyeing wastewater and alkali reduction wastewater is prone to cause fluctuations in water quality and biologi-cal inhibition.To address this issue,a coupled process of differentiated pretreatment and biochemical ad-vanced treatment is proposed:"coagulation-Fenton oxidation"is adopted to remove dyes and auxiliaries for the treatment of printing and dyeing wastewater,and the alkali reduction wastewater is treated through"acid precipitation-micro-electrolysis"to recover terephthalic acid(TA).After pretreatment,the wastewater under-goes advanced treatment through an anaerobic hydrolysis acidification-aerobic process.The results showed that in the qualitative pretreatment stage,the removal rates of COD and color in the printing and dyeing waste-water reached 78.5%and 96.2%respectively,and the TA recovery rate of the alkali reduction wastewater was 91.3%.In the biochemical stage,the total COD removal rate of the system increased to 94.8%,and the sludge production rate decreased by 42%.Technical and economic analysis shows that the cost of treating one ton of water is 3.2 yuan per ton,and the TA recovery revenue can offset 30%of the operating costs.This process provides an innovative solution for the classification treatment and resource utilization of wastewater in textile industrial parks.关键词
印染废水/碱减量废水/分质预处理/对苯二甲酸(TA)/生化深度处理Key words
printing and dyeing wastewater/alkali reduction wastewater/quality pretreatment/tere-phthalic acid(TA)/biochemical advanced treatment分类
资源环境引用本文复制引用
林宝春,陈学勤,钟永芬..印染废水与碱减量废水分质预处理-生化耦合工艺优化[J].印染助剂,2025,42(12):29-34,6.
