生物氧化臭氧活性炭联用工艺处理微染污水

Process of Ozonation with the Bio-oxidation and Biological Activated Carbon in Micro-polluted Water Treatment

采用生物滤池-臭氧氧化-生物活性炭联用工艺深度处理保定护城河某段微污染河水,通过研究各个单元与单元间联用的处理效果以及改变生化时间、臭氧氧化时间和生物活性炭的吸附时间,分别对比了COD_(Mn)、NH_3-N、色度和浊度的去除效果。结果表明,各个单元单独处理河水的效果不理想,单元间联用对河水有很好的处理效果,当生化时间为7h、臭氧氧化时间为20 min、生物活性炭吸附时间为20 min时,原水COD_(Mn)、NH_3-N、色度、浊度的去除率分别为84.66%、99.65%、87.50%、96.35%。对于相同类型的微污染废水采用生物滤池-臭氧氧化-生物活性炭联用工艺深度处理是可行的,水中污染物含量有很大降低,出水水质显著提高。

The water of Baoding moat a section was treated by ozonation process with the bio-filter and biological activated carbon. The experiment studied the respective effects of each Ireatment unit comparison to the ozonation combined with biological membranes biofilter and biological activated carbon. In addition, with the changes of the time for bio-oxidation, ozonation and biological activated carbon adsorption the removal of the permanganate index, ammonia nitrogen, chroma and turbidity were also studied. The results showed that although the effect of each separate treatment unit of the water was unsatisfactory, there was good effectiveness once they were connected. When the b^o-oxidation time was 7 h, ozonation time was 20 min, biological activated carbon adsorption time was 20 rain, the removal rates of CODw, NH3-N, chroma and turbidity of the raw water were 84.66%, 99.65%, 87.50%, and 96.35% respectively. For the similar type of micro polluted wastewater, the advanced treatment of biological filter and ozone oxidation biological activated carbon was feasible, and the content of pollutants in the water was greatly reduced, and the water quality of the effluent was significantly improved.