强化组合超滤技术处理污染水源水

针对受氨氮和有机物污染的水源水,开展了规模为1.2 m^3/h的在线混凝/生物接触氧化/超滤的强化组合工艺试验。结果表明,强化组合工艺在常温期和低温期时,生物处理池的水力停留时间(HRT)宜分别为70和110 min;当原水中氨氮浓度为1.22~3.38 mg/L时,出水氨氮浓度<0.5 mg/L,常温期和低温期时去除率分别为92%和89%;强化组合工艺对COD(Mn)也有良好的去除效果,进、出水浓度分别为2.88~5.58 mg/L和<2 mg/L;三维荧光光谱分析表明,强化组合工艺对荧光类溶解性有机物也有较好的去除效果。

Treatment of Polluted Source Water by Enhanced Combined Ultrafiltration Technology

Aiming at the source water mainly polluted by ammonia nitrogen and organic matters,a 1.2 m^3/h enhanced combined process of on-line coagulation,bio-contact oxidation and ultrafiltration was carried out.The hydraulic retention time of the biological treatment tank should be 70 min and 110 min respectively when the enhanced combined process was operated at normal temperature and low temperature.When the ammonia nitrogen concentration in the raw water fluctuated between 1.22 mg/L and 3.38 mg/L,the ammonia nitrogen concentration in the effluent was less than 0.5 mg/L,and the removal rate was 92%at normal temperature and 89%at low temperature.The enhanced combined process also had a good removal effect on CODMn,and the CODMn concentrations in the influent and effluent were 2.88-5.58 mg/L and less than 2 mg/L,respectively.Three-dimensional fluorescence spectrum analysis showed that the enhanced combined process also had a good removal effect on fluorescent soluble organic matters.