内电解UASBA/O2去除焦化 废水有机物的特性

Removal of Organic Categories from Coking Wastewater by Inner Electrolysis UASB A/O2 Process

摘要:

采用内电解预处理，研究组合工艺上流式厌氧污泥床（UASB）A/O2下污染物转化降解特性.结果表明：最佳工况条件下，当进水化学需氧量（COD）和酚质量浓度分别为2 500 mg?L-1和320.0 mg?L-1 时，最终出水COD低于150 mg?L-1，酚质量浓度小于0.1 mg?L-1.气质联仪（GCMS）分析表明：内电解预处理可降解杂环化合物、降低废水的毒性，有利于后续生化处理;UASB能有效地将焦化废水中的多支链酚类转化为结构相对简单的酚类，对喹啉类化合物有较高的去除率；经过缺氧和接触氧化处理后，出水有机物种类大量减少.

Abstract:

A study was conducted in treating coking wastewater by inner electrolysis UASB （upflow analerobic sludge bed) A/O2 process, with electrolysis as the pretreatment technology. The results show that on optimal operation condition, the chemical oxygen demand (COD) and phenol concentration pretreated by inner electrolysis, can decrease from 2 500 mg?L-1 and 320.0 mg?L-1 in influent to below 150 mg?L-1 and 0.1 mg?L-1in effluent, respectively. According to gas chromatography mass spectrometer (GC MS) analysis, the inner electrolysis pretreatment can degrade heterocyclic compounds, which contributes to the biodegradability improvement of the units followed, while the UASB can effectively change multi branched phenol into a relatively simple structure and it is of a high removal rate of quinolone. The GC MS analysis also indicates that the effluent has a sharp reduction in its organic categories by adopting the A/O2 process.