摘要
通过两套平行MBR系统,对比研究了分别投加改性粉煤灰、粉末活性炭(PAC)对MBR(分别记为反应器A、B)中污泥混合液特性和运行周期的影响,并探讨影响机理。研究结果表明,在运行过程中,反应器A的混合液EPS含量增加趋势、LB-EPS沉积量、粒径<10μm的微粒所占比例、Zeta电位降低程度、膜阻力递增趋势均大于反应器B;反应器B运行周期比反应器A延长了1/3。投加PAC延缓膜污染的效果优于投加改性粉煤灰。
Two parallel MBR systems, one with modified fly ash added (Reactor A) and another with PAC added ( Reactor B), were compared to study the effect of the additives on sludge mixture prop- erties and the operational cycle time of the reactors, and the influence mechanism was investigated. The results showed that during the experiment, Reactor A was greater than Reactor B in the increasing trend of EPS, depositing rate of LB-EPS, the percentage of particles of less than 10 microns, the reduction of Zeta potential and the increasing of transmembrane pressure. The operational cycle time of Reactor B was longer than Reactor A by 1/3. Adding PAC was better than adding modified fly ash in slowing down the membrane fouling.
出处
《中国给水排水》
CAS
CSCD
北大核心
2015年第11期93-96,共4页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2014ZX07405003)
国家级"质量工程"项目(201410878018)
省级"质量工程"项目(201410878020)