Abstract:

The research aimed to study the treatment of piggery biogas slurry with Microorganism Preparation. Compound Microorganism Preparation (CMP), Fermentation Microorganism Preparation (FMP) and Photosynthetic Microorganism Preparation (PMP) were used to remove BOD5, CODcr, NH3-N, TP, Fecal Coliform, and Total Salt from biogas slurry, and the effects were compared. The results showed that the maximal removal rates of BOD5, TP, FC were up to 61.5%, 83.0%, 99.0%, and those of CODCr, NH3-N, TS were up to 54.9%, 48.4% and 31.8%. In conclusion, the removal rate of PMP was more effectively than CMP and FMP.