改进型移动床生物膜反应器处理有机废水的试验

改进型移动床生物膜反应器(CMCBR)是在普通移动床生物膜反应器中引入导流板,使填料在全池循环移动,消除了普通移动床生物膜反应器的死角。在CMCBR处理模拟生活污水的试验中,研究了有机物的去除效果,考察了容积负荷、水力停留时间、冲击负荷等参数对处理效果的影响。试验发现,在填料填充比例为50%(体积比),进水COD质量浓度为320~550mg/L,水力停留时间为3 h的条件下,出水COD质量浓度小于100 mg/L,达到国家污水综合排放标准的一级标准。反应器具有较强的抗冲击负荷能力,出水水质稳定。

Study on a modified moving bed biofilm reactor for treatment of organic wastewater

A modified moving bed biofilm reactor was designed by adding flange plate to ordinary moving bed biofilm reactor(MBBR).The filling materials can circulate in the modified MBBR.The modified MBBR was used for treatment of domestic wastewater in order to study the removal efficiency of organic matters and investigate the influence of volumetric loading,hydraulic retention time(HRT) and shock loading on the treatment effect.It shows that under the conditions that the volume ratio of fillings was 50%,the COD concentration was 320—550 mg/L,and HRT was 3h,the concentration of effluent COD was less than 100 mg/L,which satisfied the first grade of national standard for wastewater discharge.The reactor has a high toleration to COD loading shock and it could keep the effluent quality stable.