微生物燃料电池处理煤热解废水有机物降解特性

发布时间：2018-01-03 10:04

本文关键词：微生物燃料电池处理煤热解废水有机物降解特性　出处：《水处理技术》2017年11期 　论文类型：期刊论文

【摘要】：以煤热解废水为研究对象,采用厌氧流化床微生物燃料电池(AFB-MFC)进行生化处理,考察了COD对系统产电及废水处理性能影响,并通过GC/MS内标法分析了反应体系中有机物组成及酚类物质的降解特性。结果表明,进水COD为952~2 238 mg/L时,输出电压及功率密度随COD增加而提高,最高分别为284.5 m V和2.13 m W/m~2,当COD为3 419 mg/L,输出电压和功率密度分别降低至245.7 m V和1.42 m W/m~2,说明过高的COD负荷会抑制微生物产电活性;COD去除率最高可达到92%,且随着进水COD的提高而有所下降。GC/MS结果表明,酚、苯、醇、杂环化合物与多环芳烃等物质充分降解,去除率分别为99.63%、97.55%、98.30%、95.75%和92.87%。准确分析了其中主要的5种酚类的质量浓度,该方法检出限为2.48~5.50μg/L,R~2大于0.993,平均加标回收率为72.6%~115.8%。
[Abstract]:The biological treatment of coal pyrolysis wastewater with AFB-MFCwas carried out by anaerobic fluidized bed microbial fuel cell (AFB-MFC). The effect of COD on the power generation and wastewater treatment performance of the system was investigated. The organic composition and the degradation characteristics of phenols in the reaction system were analyzed by GC/MS internal standard method. The results showed that the influent COD was 952 2 238 mg/L. The output voltage and power density increased with the increase of COD, the highest values were 284.5 MV and 2.13 MW / mm2, respectively, and when COD was 3 419 mg/L. The output voltage and power density were reduced to 245.7 MV and 1.42 MW / m ~ (2), respectively, indicating that excessive COD load could inhibit the electrical activity of microorganism. The highest removal rate of COD can reach 92%, and with the increase of influent COD, the results of GC / MS show that phenol, benzene, alcohol, heterocyclic compounds and polycyclic aromatic hydrocarbons are fully degraded. The removal rates were 99.63% 97.55% and 92.87% respectively. The mass concentrations of the five main phenols were analyzed accurately. The detection limit of this method is 2.48 ~ 5.50 渭 g 路L ~ (-1) L ~ (-1) ~ (2) > 0.993, and the average recovery is 72.6 ~ 115.8%.
【作者单位】：青岛科技大学化工学院;
【基金】：山东省科学技术发展计划项目资助(2010GGX10709)
【分类号】：TM911.45;X784
【正文快照】： 微生物燃料电池(MFC)是一种利用微生物的代谢作用将有机物储存的化学能转化为电能的装置,具有原料广泛、低能耗、清洁环保的优点[1]。目前MFC除了利用葡萄糖、乙酸等易降解的物质作为燃料外,对成分复杂的实际废水的研究逐渐增多,如生活污水、啤酒废水、猪场废水、印染废水等[2

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