| RT培司装置尾气吸收废酸处理工艺研究 |
| Study on Treatment Process of Exhaust Gas Absorption Waste Acid of RT Base Unit |
| 投稿时间：2022-03-25 修订日期：2022-03-25 |
| DOI：10.12136/j.issn.1000-890X.2022.11.0862 |
| 中文关键词: RT培司 尾气吸收废酸 Fenton法 好氧活性污泥法 联合工艺 |
| 英文关键词: RT base exhaust gas absorption waste acid Fenton process aerobic activated sludge process combined process |
| 基金项目:中国石油化工集团公司资助项目（L202009） |
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| 中文摘要: |
| 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
1 230 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1 757 mg·L-1，可进一步探索工业化试验的可行性。 |
| 英文摘要: |
| 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 1 230 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 1 757 mg·L-1，which established a solid base for
further industrial scale test. |
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