摘要
利用外循环三相生物流化床设计准则,通过小试规模的流化床对经预处理的模拟含染料废水和工业废水进行处理,结果表明:在4 h内增加水力停留时间(HRT),可提高化学需氧量(CODcr)去除率. 气、液、固三相的循环运动使流化床具有较强抗冲击负荷能力,生物膜厚在100~350 (m范围内,进水CODcr浓度在较宽范围内波动时,对出水CODcr去除率影响不大,都能维持在80%以上.
A bench-scale reactor was set up following the designing principles of external circulating fluidized beds. The reactor was made up with a master bed(f40 mm, 660 mm high) and an auxiliary bed(f80 mm, 600 mm high). Synthetic and industrial dyeing wastewater were treated in the fluidized bed. Increasing hydraulic retention time can increase effluent CODcr removal efficiency as water retention time is less than 4 h, while CODcr removal efficiency keeps 80% as HRT longer than 4 h. The change in influent CODcr and the thickness of biofilm shows no obvious effect on the effluent CODcr removal efficiency in the range of operating conditions tested.
出处
《过程工程学报》
CAS
CSCD
北大核心
2002年第2期107-111,共5页
The Chinese Journal of Process Engineering
基金
上海市青年科技启明星计划项目(编号: 98QF14039)
