A project example of bentazone and isoproturon pesticide production wastewater treatment
A pesticide manufacturing enterprise produces bentazone,isoproturon and some other pesticides,its wastewater has characteristics of complex composition,high salt content,high organic matters content,and poor biodegradability which is hard to be treated.Using combined process of three effect evaporation-hydrolysis acidification-UASB anaerobic-two stage A/O-MBR-advanced treatment to treat the said kind of wastewater,the operation results of the project showed that under the condition that the mass concentrations of CODCr,TN and TP were 50 000-100 000,1 500-2 000,100-150 mg/L respectively,the salt content exceeding 110 000 mg/L,the effluent water quality met the secondary grade standard requirements specified in GB 8918-1996 Integrated wastewater discharge standard and local environmental protection requirement.
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