臭氧组合工艺处理微污染水源水的试验研究

Study on micro-polluted source water by ozone united craft

针对邯郸市滏阳河的水质特点，本文采用臭氧组合工艺进行了微污染水源水的试验研究，研究结果表明，不同臭氧投加量下，预臭氧氧化＋生物预处理工艺对CODMn、藻类、浊度、色度、NH3-N的平均去除率分别为34．0％、84．0％、79．5％、60．5％、88．0％，并由此可得出最佳臭氧投加量为0．7～1．5mg／L；在臭氧-生物预处理、常规工艺和其后增加活性炭吸附或臭氧氧化的几种臭氧组合工艺中，采用活性炭（GAC）吸附的去除效果明显最优，尤其对CODMn的去除率也高达85．4％，而后臭氧氧化也仅为60．9％；而且增加活性炭吸附或后臭氧氧化，都可有效地降低出水的致突变活性，活性炭吸附对TA98的去除能力优于后臭氧氧化能力，且均达到57％以上；后臭氧氧化对TA100的去除能力优于活性炭吸附能力，也均达到33％以上，且对TA100菌株的诱变指数（MR）均呈明显的阴性。

Micro-polluted source water treatment by ozone united craft had been studied according to the water quality characteristics. The results showed that the ozone-pretreatment following biological pretreatment craft can reach a highly average removal efficiency at the different dosages of ozone, such as CODMn was34.0%, algae was 84.0% ,turbidity was 79.5% ,chromaticity was 45.0% - 62.0%, NH3-N was 88. 0% and the optimal dosages of ozone was 0.7 - 1.5mg/L. The removal efficiency of GAC adsorption was the most optimal among the technics including the ozone-pretreatment and conventional craft and adding granular activated carbon （GAC） adsorption or rear ozonation to it. The removal efficiency of CODMn was 85.4 %, while rear ozonation only to CODMn was 60.9 %. Adding granular activated carbon （GAC） adsorption and rear ozonation can reduce the mutagenicity of the effluent efficiently. The removal ability to TA98 by GAC adsorption was better than rear ozonation, it can reach a removal efficiency of 57 % ; while rear ozonation was more optimal than GAC adsorption to TA100, and the removal efficiency reach to 57% ; the phase shift mutant and substitution to TA100 was negative.