摘要
以膜生物反应器（MBR）和膜混凝反应器（MCR）分别处理石化污水厂水解池出水和二沉池出水。结果发现水力停留14．5h，DO约4mg／L时，MBR对石化废水的化学需氧量（COD）去除率达到88％，膜出水COD为71．3mg／L。以MCR对污水厂出水进行深度处理，发现PAC约10mg／L为最佳投药量，此时COD去除率达到32％，膜出水COD为75．6mg／L。以两种微滤膜反应器出水进行淤泥密度指数（SDI）实验，SDI在3—5之间，可以作为RO进水，但为了RO系统的稳定运行．应进一步对出水讲行深度处理。
Membrane bio- reactor （MBR） and membrane coagulating reactor （MCR） are applied respectively in the treatment of effluent from hydrolysis tank and second sedimentation tank in a petrochemical wastewater treatment plant （WWTP）. The results indicate that with HRT of 14.5 h and DO of 4 mg/L, MBR can achieve a COD removal rate of 88 % with effluent COD of 71.3 mg/L. In advanced treatment of effluent of WWTP by MCR, an optimal dosage of 10 mg/L PAC is suggested while a COD removal rate of 32 % and COD of 75.6 mg/L can be reached. The Silt Density Index （SDI） of effluent from two micro- filtration membrane reactor range from 3 to 5, which enables the effluent to be directly used as the influent of Reverse Osmosis （RO） system. But for the stability of RO system, further advanced treatment is suggested.
出处
《当代化工》
CAS
2007年第2期148-150,205,共4页
Contemporary Chemical Industry
