A project example of chemical wastewater reusing treatment based on aeration biological fluidized tank
In order to make the effluent water quality meet the requirement of production reuse,aeration bi-ological fluidized tank(ABFT)was adopted as core process for advanced treatment of effluent water from wastewa-ter treatment system of a chemical plant.The design treatment water quantity of the said reconstruction project was 360 m3/d,during the trial operation period,the mass concentrations of COD,NH3-N and TN in the influent water were 52.0-114.0,0.3-1.1,and 11.3-32.5 mg/L respectively,through the reconstruction,the average removal rates of COD,ammonia nitrogen and TN by ABFT biochemical treatment were 31.8%,39.3%and 60.9%respectively,the reuse water quantity reached above 50%,the direct cost of water treatment was 7.59 yuan/t.The implementation of the reuse and reconstruction project not only reduced the amount of wastewater discharged out-side the industrial park,but also provided reference for similar chemical wastewater treatment reuse and recon-struction projects.
chemical wastewateraeration biological fluidized tankdenitrificationwater reuse
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