Optimization in the anaerobic digestion fluid of swine wastewater treatment By SBBR with addition of raw wastewater

Anaerobic digestion has been applied in various forms and scales to lessen the organic matter in Swine wastewater, but C/N of the anaerobic digesting fluid is low and biochemistry degradation difference. Treatment of swine wastewater anaerobic digestion fluid By SBBR was studied, finally research indicated: SBBR treated swine wastewater anaerobic digesting fluid directly, COD and NH4+-N removal was unstable and poor, but through adding 30% pig farm raw wastewater to the anaerobic digestion fluid, the pollutant degeneration ability of SBBR could be enhanced effectively, COD removal rate enhanced to 83.7%~87.95%, NH4+-N removal rate rised to 96.1%~98.9%, and the TN removal rate also increased to 52.16%~58.13%.