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考察了膜电解氢自养膜生物反应器在不同水力停留时间(HRT)和电流强度下对饮用水中ClO4-的去除效果。结果表明,在进水ClO4-浓度和电流强度分别为10 mg/L和300 mA的情况下,HRT从12 h降低到4 h,反应器出水ClO4-浓度随HRT的降低呈增大趋势,但运行稳定后去除率均维持在99%以上,出水pH较进水有所增大,但增加幅度随HRT的缩短而减小。当电流强度从100 mA增加到200 mA时,出水ClO4-浓度随电流强度的增大而减小,稳定运行后出水ClO4-浓度低于4μg/L,出水pH受电流强度变化的影响不大。整个运行过程未检测到中间产物ClO3-和ClO2-的存在。
The removal efficiency of ClO4- in drinking water under different hydraulic retention time (HRT) and current intensity was investigated in membrane electrolyzed autotrophic membrane bioreactor. The results showed that the HRT decreased from 12 h to 4 h when the influent ClO4- and amperage were 10 mg / L and 300 mA, respectively. However, the ClO4- concentration in effluent from the reactor increased with the decrease of HRT, After the operation of the stable removal rate were maintained at more than 99%, effluent pH increased compared with influent, but the increase with the shortening of HRT decreases. When the current density increased from 100 mA to 200 mA, the concentration of ClO4- in the effluent decreased with the increase of the current intensity. After the steady operation, the effluent concentration of ClO4- was lower than 4μg / L, and the effluent pH had little effect on the current intensity. The whole process did not detect the presence of intermediate products ClO3- and ClO2-.