Treatment of Chemical Wastewater with Combined Process of Physichemistry and Biochemistry
Combined process of micro-electrolysis-coagulation, activated sludge, hydrolysis acidification, SBR and powder activated carbon adsorption was used to treat wastewater of sodium carbonate. Waste H2SO4, Fe and C were used to control micro-electrolysis process. It was found that the concentration of S2-, colority, COD was reduced dramatically, with average removal efficiency of 99.0%, 98.9% and 66.9% respectively. PH and VFA were highlighted to testify the effect of hydrolysis acidification, with effluent COD less than 300mg/L, which can meet national discharge standard.