摘要
通过投加零价铁和增加微电场提高水解酸化的效果,改善混合工业废水的可生化性。实验在4个反应器中同步进行:微电场-零价铁厌氧反应器(R1)、微电场厌氧反应器(R2)、零价铁厌氧反应器(R3)及普通厌氧反应器(R4)。结果表明,微电场-零价铁对水解酸化具有明显的促进作用,在水力停留时间(HRT)为81 h时,TOC去除率达70%,BOD5/COD由0.15增至0.41,废水的可生化性显著提高。
The biodegradability of industrial wastewater mixture was improved with the addition of zerovalent iron( ZVI) and micro-electric field which enhanced the effect of hydrolytic acidification. The experiments were carried out simultaneously in four reactors: micro-electric field-zero-valent iron( ZVI) anaerobic reactor( R1),micro-electric field anaerobic reactor( R2),zero-valent iron anaerobic reactor( R3) and regular anaerobic reactor( R4). It is demonstrated that micro-electric field-zero-valent iron facilitated hydrolytic acidification evidently,with a TOC removal rate of 70% at hydraulic retention time( HRT) of 81 h and BOD5/COD from0. 15 to 0. 41. As a result,the biodegradability of wastewater was significantly improved.
出处
《环境工程学报》
CAS
CSCD
北大核心
2014年第10期4191-4195,共5页
Chinese Journal of Environmental Engineering
基金
国家"水体污染控制与治理"科技重大专项(2012ZX-07205-002)
国家自然科学基金资助项目(41072194)
关键词
微电场
零价铁
水解酸化
可生化性
micro-electric field
zero-valent iron(ZVI)
hydrolytic acidification
biodegradability
