Abstract:

The three methods， including micro-electrolysis method， Fenton reagent method and micro-electrolysis combined with H²O² method， have been compared. It is determined to use micro-electrolysis plus H²O² method for pretreating TDA wastewater. The best working conditions are as follows: iron/carbon ratio is 1∶1，pH from 4 to 5， HRT from 70 to 80 min， the best volume ratio between Fe²⁺ and H²O² from 7∶1 to 9∶1. The TDA’s concentration of effluent quality can meet the requirements of sequent biological treatment system, and ensure that the effluent of biological systems can reach the national first grade discharge standards level.

Key words: 2, 4-toluylene diamine, micro electrolysis, Fenton reagent

摘要：

通过对微电解法﹑Fenton 法以及微电解/H²O² 法三种工艺的比较,试验确定采用微电解/H²O² 工艺对TDA 废水进行预处理,得出最佳工作条件:pH 为4～5、n(铁)∶n(炭)=1∶1、HRT 为70～80 min、V(Fe²⁺)∶V(H²O²)=7∶1～9∶1。经其 处理后出水TDA 浓度能够满足后续生物处理系统的要求,保证生物系统的出水达到国家一级排放标准。

关键词: 2, 4-二氨基甲苯, 微电解, Fenton 试剂

CLC Number: 

• X703.1