详细信息
文献类型:期刊文献
中文题名:对氯苯酚废水处理引起的活性污泥有机毒性
英文题名:Organic toxicity of sludge caused by treating p-chlorophenol wastewater
作者:赵骏[1];赵建国[1];陈秀荣[1];鲍征[1];何怡萱[1]
机构:[1]华东理工大学资源与环境工程学院,上海200237
年份:2016
卷号:10
期号:5
起止页码:2252
中文期刊名:环境工程学报
外文期刊名:Chinese Journal of Environmental Engineering
收录:CSTPCD;;Scopus;北大核心:【北大核心2014】;CSCD:【CSCD2015_2016】;
基金:国家自然科学基金资助项目(51378207);上海市浦江人才计划资助项目(13PJD009);国家水体污染控制与治理科技重大专项(2014ZX07202-011-002)
语种:中文
中文关键词:对氯苯酚(4-CP);污泥驯化;污泥有机毒性;序批式活性污泥系统(SBR)
外文关键词:p-chlorophenol(4-CP); sludge domestication; sludge organic toxicity; sequencing batch reactor(SBR)
摘要:以处理难降解有机污染物对氯苯酚(4-CP)模拟废水的序批式好氧活性污泥系统为研究对象,探讨活性污泥在降解4-CP的过程中污泥有机毒性的形成与空间分布规律,以及污泥有机毒性随时间的变化趋势。处理组污泥用10 mg/L的4-CP模拟废水进行驯化。控制SBR系统的水力停留时间(HRT)和污泥停留时间(SRT)分别为12 h和20 d。结果表明,随着驯化时间的延长,处理组污泥毒性先升高后降低,最终达到稳定状态。在整个运行过程中,处理组污泥毒性始终高于对照组。4-CP的吸附与降解实验表明,污泥外层胞外聚集物(EPS)主要起吸附4-CP且向内层传递的作用,污泥有机毒性主要是由4-CP的降解过程引起,少部分由污染物吸附所致。
The formation of sludge organic toxicity and its spatial distribution were investigated via an aerobic activated sludge system treating synthetic wastewater containing toxic and refractory p-chlorophenol( 4-CP).Control sludge was acclimated using 10 mg / L 4-CP. The hydraulic retention time( HRT) and sludge retention time( SRT) were controlled at 12 h and 20 d,respectively,in a sequencing batch reactor( SBR). The results showed that the sludge toxicity of the control group first increased and then decreased to a steady state with operation time. The sludge toxicity of the control group was always higher than the blank group. The 4-CP adsorption and biodegradation tests showed that outer extracellular polymeric substances( EPS) absorbed 4-CP,which was transferred inside,and the sludge toxicity mainly resulted in the process of 4-CP biodegradation.
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