1,4-Butanediol,polytetrahydrofuran,ethylene glycol production wastewater treatment process optimization
During the operation of the sewage treatment process of a chemical plant,the COD of the UASB reactor effluent is high and fluctuates greatly,resulting in a high COD of the MBR effluent,the increase in the amount of ozone in advanced treatment,and the frequent replacement of activated carbon in the bio-logical activated carbon filter,the cost is high,and it is necessary to optimize its process.The results show that the wastewater with low COD value directly enters the hydrolysis and acidification tank without going through the UASB reactor,and the residence time of the high COD wastewater in the UASB reactor is in-creased.The addition of bio-energizer can greatly reduce the COD value of UASB reactor effluent and MBR effluent,reduce the burden of subsequent advanced treatment,and achieve stable discharge of wastewater up to the standard while saving costs.
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