物化法处理回用城市生活污水的研究

摘要

Physiochemical method was used to treat municipal domestic sewage to achieve the goal of recycling. This work developed one combined coagulant which applied to municipal sewage and optimized the key step Fenton oxidation through extensive experiments. Results showed that the optimum reaction conditions of Fenton oxidation were pH4, reaction time 80min, addition amount of H2O2 0.1% （Volume Fraction ）, catalyst FeSO4 and Fea （SO4）3, addition amount of catalyst 0.2mg/L.The water quality reached the water quality standard for urban wastewater recycling urban miscellaneous water quality （ B/T18920-2002 ） after follow-up process.%采用物化法对某小区生活污水进行处理。通过大量试验筛选了适用于该污水的复配混凝剂并对关键步骤1％nton氧化进行了条件优化，实验结果表明：Fenton氧化的最佳反应条件为：pH4，反应时间80rain，过氧化氢的加入量0．1％（体积分数），催化剂采用FeSO4和Fe2（SO4）3，催化剂加量为0．2g／L。经过后续工艺处理，污水水质达到城市污水再生利用城市杂用水水质（B／T18920—2002）标准。