三效蒸发-气浮-三维电解-兼氧-好氧-混凝对农药废水处理的研究

THE RESEARCH FOR THE PESTICIDE WASTE WATER TREATMENT BY TRIPLE EFFECT EVAPORATION-FLOTATION-THREE-DIMENSIONAL ELECTROLYSIS-FACULTATIVE AEROBIC-AEROBIC-COAGULATION

农药废水以其有机物成分复杂、COD高、盐分高、可生化性差、毒性大而成为水处理上的一大难题,得不到有效治理。根据水质特征,拟选用三效蒸发、先进的前处理技术"过电位三维电解技术"和"美境高效复合微生物菌种"组成的工艺"三效蒸发-气浮-过电位三维电解-兼氧-好氧-混凝"对农药废水的处理进行研究,探索该工艺对农药废水处理的可行性。试验最终取得了满意的结果,平均COD从28861mg·L-1降到59mg·L-1,去除率为99.8%,平均NH3-N质量浓度从104.3mg·L-1降到5.3mg·L-1,去除率为94.9%,出水达到国家一级排放标准。

The pesticide waste water has become a big problem in the water treatment field because of its complex organicing redient,high COD,high salinity,poor biode gradability and high toxicity.So it hasn＇t been treated effectively.According to the characteristic of the water quality,we selected the technology of ＂triple effecteva poration-flotation-the over potential three-dimensional electroly sisfacultative a erobic-aerobic-coagulation＂.Which were composed of triple effect evaporation,the advanced pre-treatment technique-＂the overpotential three-dimensional electrolysis technology＂ and ＂ Meijing efficient compound micro bialstrains＂.And we use it toresearch pesticide waste water treatment.Then we groped the feasibility of the technology to the pesticide waste water treatment.Finally,we achieved satisfactory results.The average CO Dreduced from 28861mg·L^-1 to 59mg·L^-1,and there moval rate was 99.8%.The average NH3-Ndropped from 104.3mg·L^-1 to 5.3mg·L^-1,and there moval rate was 94.9%.The effluent accorded with the first grade of national discharge standards.