摘要
用活性炭作为吸附剂设计了A、B、C、D4级串联系统用以处理生物柴油废水,比较了好氧吸附、厌氧吸附与好氧生物膜反应3种工艺处理生物柴油生产废水的效果。结果表明,好氧吸附系统COD和油脂的去除率显著高于厌氧吸附和好氧生物膜处理的值,在整个试验处理期间,好氧吸附系统的处理效果稳定,其末端D单元COD和油脂的去除率始终分别保持在93%～98%和88%～90%,出水水质优于国家规定的二排放标准。试验证明,对吸附系统进行曝气供氧,可有效提高系统中被吸附有机污质的生物降解速率,从而维持系统的吸附能力和去除效果。
A designed adsorption system consisting of four sequenced cells （A,B,C and D） with activated carbon as adsorbent was used to treat the wastewater from bio-diesel production. The removal efficiency of pollutants from bio-diesel wastewater was compared among three tested processes,aerobic adsorption,anaerobic adsorption and aerated bio-film digestion. The obtained results showed that the aerobic adsorption process gave much higher COD and grease removal rates than the other two processes. In the whole tested period the removal rates of COD and grease in the aerobic adsorption process remained at high levels within the range between 93%～98% and 88%～90%,respectively,and the water quality of the effluent reached the required wastewater discharge standard. The present tests confirms that aeration can effectively enhance the bio-digestion rate of the adsorbed organic pollutants,thus regenerate the adsorption capacity and maintain the removal rate of the adsorption system at high levels.
出处
《水处理技术》
CAS
CSCD
北大核心
2010年第11期85-88,共4页
Technology of Water Treatment
基金
环保公益性行业科研专项(200909066)
国家科技部国际合作项目(2007-DFA91420)
国家水体污染控制与治理科技重大专项(2008ZX07212-001)
湖南省高校创新平台开放基金(09K055)
湖南省教育厅产业化项目(07CY003)
湖南省重点学科建设(2006180)
关键词
生物柴油废水
好氧吸附
厌氧吸附
好氧生物膜
bio-diesel wastewater
aerobic adsorption
anaerobic adsorption
bio-film digestion
