摘要
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。
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 03 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
出处
《工业水处理》
CAS
CSCD
北大核心
2014年第8期62-64,共3页
Industrial Water Treatment
关键词
酵母废水
深度处理
臭氧强化混凝
yeast wastewater
advanced treatment
ozone enhanced coagulation
