ABSTRACT
ABSTRACT: Slaughter wastewater was a kind of typical organic wastewater that can be biodegraded, but with high concentration of organic matter and nitrogen materials, treatment of this kind of wastewater remained difficult. Basing on the characteristics of the slaughter wastewater, this study adopted hydrolysis + Bardenpho reactors to treat slaughterhouse wastewater and realized process optimization by selecting the appropriate process parameters. Impacts of different hydraulic retention times (HRT) on the removal efficiency of CODCr, NH
+ 4 -N and TN were studied
so as to evaluate the feasibility of combined hydrolysis and Bardenpho process in treating slaughterhouse wastewater. The results showed that the concentrations of CODCr, NH
+ 4 -N and TN in effluent
were 24∼28 mg/L, 0.01∼1.5 mg/L and 10.2∼12.4 mg/L respectively with met with the B emission limits of “Sketch of water pollutant emission standards” (DB11/307-20××): COD ≤ 40 mg/L, NH+4 -N ≤ 2.0 mg/L, TN ≤ 20 mg/L.
