摘要
研究RT培司(对氨基二苯胺)装置全工段尾气吸收废酸(简称废酸)的处理工艺。采用电气石非均相Fenton法对废酸进行处理,确定优化工艺条件为:反应温度20~25℃,过氧化氢用量30.27 g·L^(-1),电气石用量240 g·L^(-1),反应时间10 h,在该优化工艺条件下废酸化学需氧量(COD)去除率约为35%。采用单级好氧活性污泥法处理废酸,COD去除率为62.63%。采用Fenton-好氧活性污泥法联合工艺可以有效处理废酸,COD去除率为98.92%,出水COD为1230 mg·L^(-1),出水可接入污水管网进行进一步处理。设计模试装置,对Fenton-好氧活性污泥法联合工艺进行模试放大试验,废酸COD去除率为98.47%,出水COD为1757 mg·L^(-1),可进一步探索工业化试验的可行性。
The treatment processes of the exhaust gas absorption waste acid in the whole section of RT base device(hereinafter referred to as waste acid)were studied.When the waste acid was treated by the tourmaline heterogeneous Fenton process,the optimum process conditions were as follows:the reaction temperature was 20~25℃,the dosage of H2O2 was 30.27 g·L^(-1),the dosage of tourmaline was 240 g·L^(-1),and the reaction time was 10 h.The chemical oxygen demand(COD)removal rate of the waste acid was about 35%under these optimum process conditions.When the waste acid was treated by the single-stage aerobic activated sludge process,the COD removal rate reached 62.63%.The Fenton-aerobic activated sludge combined process could effectively treat the waste acid,and the COD removal rate rose to 98.92%.Moreover,the effluent COD of the combined process was 1230 mg·L^(-1),and effluent could be directly discharged into the sewage pipe network for further treatment.The model test device was then designed to scale up the Fenton-aerobic activated sludge combined process.In the scale up test,the COD removal rate of waste acid reached 98.47%,and the effluent COD was 1757 mg·L^(-1),which established a solid base for further industrial scale test.
作者
黄伟
储政
刘卓
管庆宝
HUANG Wei;CHU Zheng;LIU Zhuo;GUAN Qingbao(SINOPEC Nanjing Research Institute of Chemical Industry Co.,Ltd,Nanjing 210048,China;SINOPEC Nanjing Chemical Industry Co.,Ltd,Nanjing 210048,China)
出处
《橡胶工业》
CAS
2022年第11期862-867,共6页
China Rubber Industry
基金
中国石油化工集团公司资助项目(L202009)。
关键词
RT培司
尾气吸收废酸
FENTON法
好氧活性污泥法
联合工艺
RT base
exhaust gas absorption waste acid
Fenton process
aerobic activated sludge process
combined process
