Abstract:
The pretreatment effect of the distillation-micro-eletrolysis-stripping process on actual dimethoate waste-water has been researched.The technological conditions should be kept as below:distillation temperature is 105℃, and stirring rate 100 r/min.The influent pH treated by iron carbon micro-electrolysis is 3, iron carbon mass ratio 1:1, gas water ratio 10:1, and reaction time 120 min.The influent pH of stripping process is 11, temperature 35℃, gas liquid ratio 300:1 and reaction time 120 min.The results show that the system effluent COD removing rate by this process can reach 78.56%.The removing rates of TP, TN and NH4-N are 99.86%, 93.91% and 95.91% respectively.The effluent B/C increases from 0.08 to 0.32.The effect of the distillation-micro-eletrolysis-stripping process on the pretreatment of dimethoate wastewater is pretty good, especially beneficial to latter biochemical treatment.
Key words:
dimethoate wastewater,
iron carbon micro-electrolysis,
distillation,
stripping process
摘要：
对采用蒸馏-铁炭微电解-吹脱工艺预处理实际乐果废水的效能进行了研究。保持工艺条件为：蒸馏温度为105℃，搅拌速度为100 r/min；铁炭微电解进水pH=3，铁炭质量比为1：1，气水比为10：1，反应时间为120 min；吹脱过程pH=11，温度为35℃，气液比为300：1，吹脱时间为120 min。结果表明，工艺对废水的COD去除率达78.56%，TP的去除率达99.86%，TN、氨氮的去除率分别为93.91%、95.91%，B/C由0.08提高到0.32。采用蒸馏-铁炭微电解-吹脱对乐果废水预处理效果较好，有利于后期生化处理。
关键词:
乐果农药废水,
铁炭微电解,
蒸馏,
吹脱法
CLC Number:
Li Shiyao, Tu Jiacai, Yao Chuang, Chen Kai, Luo Xiaodong, Yue Jianxiong. Experimental research on the pretreatment of dimethoate wastewater by distillation-micro-electrolysis-stripping process[J]. INDUSTRIAL WATER TREATMENT, 2017, 37(1): 76-78.
李诗瑶, 涂家财, 姚创, 陈凯, 罗晓栋, 岳建雄. 蒸馏-铁炭微电解-吹脱预处理乐果废水试验研究[J]. 工业水处理, 2017, 37(1): 76-78.