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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Anaerobic bioconversion of petrochemical wastewater to biomethane in a semi-continuous bioreactor: Biodegradability, mineralization behaviors and methane productivity
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Anaerobic bioconversion of petrochemical wastewater to biomethane in a semi-continuous bioreactor: Biodegradability, mineralization behaviors and methane productivity

机译：半连续生物反应器中石化废水的厌氧生物转化物，生物甲烷：生物降解性，矿化行为和甲烷生产率

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摘要

Petrochemical wastewaters treatment represents a serious challenge due to the high toxicity and complex chemical components. In this study, the biodegradability, mineralization behaviors and methane productivity of eight different types of petrochemical wastewaters were evaluated in series of semi-continuous bioreactors. Methane production strongly depended on the characteristics of wastewaters and chemical constituents. The highest methane yield of 305.9 +/- 2.7 mL/g-COD was achieved by purified terephthalic acid wastewater, followed by ethylene glycol, polyester, etc. Comparatively, one-step-SCN- wastewater produced the lowest methane yield (4.7 +/- 0.7 mL/g-COD) owing to high toxicity and low biodegradability. Modified Gompertz model confirmed that purified terephthalic acid, ethylene glycol and polyester wastewaters had a short lag-phase of 1.2, 1.7 and 0.2 days, respectively. Nonetheless, the formation of by-products such as proteins, polysaccharides and ammonia nitrogen throughout anaerobic digestion reflected the high activity of anaerobic microorganisms, confirming the technical feasibility of anaerobic biotechnology in treating petrochemical wastewaters.
机译：由于高毒性和复杂的化学成分，石化废水器治疗代表了严重的挑战。在该研究中，八种不同类型石化废水的生物降解性，矿化行为和甲烷生产率串联半连续生物反应器评价。甲烷生产强烈依赖废水和化学成分的特性。通过纯化的对苯二甲酸废水来实现305.9 +/- 2.7ml / g-cod的最高甲烷产率，其次是乙二醇，聚酯等，一步 - SCN-废水产生最低的甲烷产率（4.7 + / - 由于高毒性和低生物降解性， - 0.7ml / g-cod）。改性的Gompertz模型证实，纯化的对苯二甲酸，乙二醇和聚酯废水分别具有1.2,1.7和0.2天的短滞期。尽管如此，在整个厌氧消化过程中形成副产物，如蛋白质，多糖和氨氮，反映了厌氧微生物的高活性，确认了厌氧生物技术在处理石油化学废水中的技术可行性。

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