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研究了气浮和沉淀工艺对不同分子质量区间三卤甲烷生成势(THMFP)的去除效果及絮体形态对去除THMFP的影响。结果表明,气浮工艺对各分子质量区间THMFP的去除效果均优于沉淀工艺,二者均以去除大分子质量区间的THMFP为主,对小分子质量区间THMFP的去除效果较差。UV254与THMFP值的线性相关系数为0.917,UV254值可以较好地反映THMFP的含量。气浮絮体的分形维数小于沉淀絮体,孔隙率较大,可以增加对有机物的活性吸附空间;气浮絮体尺寸较小,具有更好的同向絮凝效果,增加了絮体和有机物的接触概率,从而使气浮工艺对THMFP的去除效果优于沉淀工艺。
The effects of flotation and precipitation processes on THMFP removal and the effect of floc morphology on the removal of THMFP were studied. The results showed that the removal efficiency of THMFP by flotation was better than that of precipitation by THMFP, and the removal of THMFP by small molecular weight was worse than that by THMFP. The linear correlation coefficient between UV254 and THMFP was 0.917, and the UV254 value could better reflect the content of THMFP. The fractal dimension of flotation flocs is smaller than that of sedimentation flocs, and the porosity is larger, which can increase the active adsorption space for organic compounds. The flotation flocs are smaller in size and have better flocculation effect in the same direction and increase the flocs and organic matter Of the contact probability, so that the air flotation process THMFP removal effect is better than the precipitation process.