絮凝-微滤处理洗煤废水及膜污染机理研究
发布时间:2018-11-17 08:08
【摘要】:采用聚合氯化铝铁(PAFC)预处理+微滤工艺处理电厂的洗煤废水,研究了混凝对水质的影响,考察了絮凝减缓膜污染的效果。结果表明,当PAFC的投加质量浓度为50 mg/L时,废水中COD、悬浮固体、浊度的去除率分别为68%、98%、95%。PAFC混凝处理将过滤过程中的总阻力降低了39.2%,其中滤饼层阻力降低了68.7%,膜孔阻塞阻力降低了59.1%,但是浓差极化阻力升高了138.4%。PAFC混凝处理减轻了膜孔阻塞和滤饼层污染。
[Abstract]:The effect of coagulation on water quality and the effect of flocculation on membrane fouling were studied by using polyaluminum ferric chloride (PAFC) pretreatment microfiltration process to treat coal washing wastewater from power plant. The results showed that when the mass concentration of PAFC was 50 mg/L, the turbidity removal rate of COD, suspension solid in wastewater was 68 / 98 / 95. PAFC coagulation treatment reduced the total resistance in the filtration process by 39.2%. The filter cake layer resistance decreased 68.7%, the membrane pore blocking resistance decreased 59.1%, but the concentration polarization resistance increased the 138.4%.PAFC coagulation treatment to reduce the membrane hole blocking and filter cake layer pollution.
【作者单位】: 神华福能(福建雁石)发电有限责任公司;武汉大学化学与分子科学学院;
【分类号】:X773
[Abstract]:The effect of coagulation on water quality and the effect of flocculation on membrane fouling were studied by using polyaluminum ferric chloride (PAFC) pretreatment microfiltration process to treat coal washing wastewater from power plant. The results showed that when the mass concentration of PAFC was 50 mg/L, the turbidity removal rate of COD, suspension solid in wastewater was 68 / 98 / 95. PAFC coagulation treatment reduced the total resistance in the filtration process by 39.2%. The filter cake layer resistance decreased 68.7%, the membrane pore blocking resistance decreased 59.1%, but the concentration polarization resistance increased the 138.4%.PAFC coagulation treatment to reduce the membrane hole blocking and filter cake layer pollution.
【作者单位】: 神华福能(福建雁石)发电有限责任公司;武汉大学化学与分子科学学院;
【分类号】:X773
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