Subject: Ding Xinda activated carbon drainage treatment
Content: Activated carbon catalyst can promote the decomposition of ozone. The consumption rate of liquid phase ozone in activated carbon catalytic secondary oxidation process is 71.2% higher than that in ozone secondary oxidation process. The analysis of the relationship between ozone consumption and organic matter content in activated carbon catalytic secondary oxidation process shows that activated carbon can react directly with ozone or act as a free radical initiator in the process of ozone decomposition, especially when the organic matter content in water is low. When ozone dosage is L mg/L, the MIB removal rate of catalytic secondary oxidation is about L times higher than that of ozone secondary oxidation. When the concentration of ozone in water is about 1.5 mg/L, the catalytic secondary oxidation makes BrO; The concentration decreased by 0.04mg/L. activated carbon pellets wholesale The combined process of catalytic oxidation and activated carbon filtration has higher water purification efficiency. When the influent ozone concentration is 0~0.1 mg/L and influent UV254 is 0.020~0.030 L /em, the average removal rate of UV2sa by catalytic and ozone activated carbon is 30% and 21%, respectively. The removal rate of UV2s4 and DOC by activated carbon filtration is the highest when influent water quality and liquid phase ozone concentration is moderate. The DOC removal rate reached the maximum when the liquid phase ozone relative concentration (O/DOC) was about 0.3. The organic matter content and ozone concentration of activated carbon influent after catalytic oxidation are low, which is beneficial to the adsorption capacity and surface properties of activated carbon. In addition, metal oxides lost by the catalyst can be adsorbed by the activated carbon, which also helps to promote the decomposition of ozone on the surface of the activated carbon.