[Phase separation characteristics of an anaerobic baffled reactor treating organic wastewater containing sulphate].

Phase separation characteristics of anaerobic baffled reactor (ABR) treating organic wastewater containing sulphate were investigated in a 5-compartment ABR with an effective volume of 32 L. During a start-up experiments of 132 days, the chemical oxygen demand (COD) and sulphate (SO4(2-)) removal efficiency, volatile fatty acid (VFA) and sulfide (S2-) distribution in each compartment were measured. The microbiology communities of granular sludge were also investigated by scanning electronic microscope (SEM).