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首页> 外文期刊>Journal of Environmental Science and Health >Biological treatment of electronic industry wastewater containing TMAH, MEA and sulfate in an UASB reactor
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Biological treatment of electronic industry wastewater containing TMAH, MEA and sulfate in an UASB reactor

机译：UASB反应器中含有TMAH，MEA和硫酸盐的电子工业废水的生物学处理

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This study investigated the feasibility of the methanogenic treatment of electronic industry wastewater containing tetramethylammonium hydroxide (TMAH), monoethanolamine (MEA) and sulfate in a lab-scale mesophilic up-flow anaerobic sludge blanket reactor. Feeding a mixture of electronic industry wastewater and co-substrate organics to the reactor for smooth acclimatization of sludge gave complete degradation of each organics within five days. When the reactor was fed only electronic industry wastewater, total COD removal, TMAH removal and MEA removal were achieved over 80, 99 and 99%, respectively, at an organic loading rate of 11.5 kg-COD m(-3) day(-1). 173 mg-S L-1 of influent sulfate was almost reduced simultaneously with the COD removal. In order to evaluate performance stability, the TMAH shock load event was performed under the conditions of 11,000 mg-COD L-1 for 24 h. Inflow of high TMAH concentration inhibited TMAH degradation and sulfate reduction for more than one month, however, not MEA. The batch feeding experiment and specific activity measurement revealed degradation pathways of each organics. TMAH was degraded via methanogenic pathway without sulfate reduction, MEA was degraded via methanogenic pathway with sulfate reduction. The results indicated that methanogenic treatment was applicable to electronic industry wastewater by appropriate reactor handling.
机译：本研究研究了含有四甲基氢氧化铵（TMAH），单乙醇胺（MEA）和硫酸盐的电子工业废水的甲状腺原料处理的可行性，在实验室嗜可能厌氧絮凝剂反应器中。将电子工业废水和共衬底有机物的混合物喂给反应器，以便在五天内完全降解每个有机物。当反应器仅喂食电子行业废水时，分别以11.5kg-cod m（-3）天（-3）的有机加载速率超过80,99和99％的总鳕鱼去除，TMAH去除和MEA去除量（-3） ）。用COD去除几乎同时减少173mg-S L-1。为了评估性能稳定性，在11,000mg-COD L-1的条件下进行TMAH冲击载荷事件24小时。高TMAH浓度的流入抑制了TMAH降解和硫酸盐的降低超过一个月，但是没有MEA。批量馈送实验和特定活性测量显示每个有机物的降解途径。 TMAH通过甲状腺学途径降解而不会降低硫酸盐，通过甲状腺途径降解，降低硫酸盐。结果表明，通过适当的反应堆处理适用于电子工业废水的甲烷处理。

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