CAJ | 학술논문

采用臭氧强化混凝的方法对酵母废水二级出水进行深度处理，结果表明，臭氧、三氯化铁投加量分别为120 mg/L、0.5 g/L时，COD去除率为65.0%，与相同投加量下先混凝后臭氧氧化的实验结果相比，COD去除率可提高19.2%，化学污泥产生量可减少50%以上；与单独混凝实验相比，可减少60%以上的混凝剂用量。臭氧强化混凝的吨水处理费用最低，采用氧气源时，吨水处理费为2.5元，分别比先混凝后臭氧氧化和单独混凝减少0.7、1.3元/t。
채용취양강화혼응적방법대효모폐수이급출수진행심도처리，결과표명，취양、삼록화철투가량분별위120 mg/L、0.5 g/L시，COD거제솔위65.0%，여상동투가량하선혼응후취양양화적실험결과상비，COD거제솔가제고19.2%，화학오니산생량가감소50%이상；여단독혼응실험상비，가감소60%이상적혼응제용량。취양강화혼응적둔수처리비용최저，채용양기원시，둔수처리비위2.5원，분별비선혼응후취양양화화단독혼응감소0.7、1.3원/t。
Ozone enhanced coagulation has been used for the advanced treatment of the secondary effluent of yeast wastewater. The results show that when the dosage of O3 is 120 mg/L and FeCl3 0.5 g/L,the COD removing rate is 65.0%. Compared with the experimental results of that having the same dosages ,and the process by coagulation first and then ozonation next,19.2%of COD removing rate can be increased,and 50%or more of chemical sludge yield can be decreased. Compared with the results of the process by coagulation only ,more than 60%of coagulant dosage can be reduced. The wastewater treatment cost of ozone enhanced coagulation per ton is the lowest. When oxygen source is used,the treatment cost is CNY2.5/t. Compared with the treatment costs of the processes by coagulation first and ozonation next and by coagulation only,CNY0.7/t and CNY1.3/t can be reduced,respectively.