催化氧化法处理焦化污水生化出水的中试研究

摘要

The process of ClO2 catalytic oxidation is used to treat the coking wastewater .In this pilot research ,the effects of water inflow , dosage , air demand of coking wastewater treatment on COD are investigated and the optimum ranges for catalytic oxidation are found out ,water inflow of 0 .2 m3/h ,effective catalyst of 0 .5 m3 ,air demand of 10 m3/h ,dosage of hydrochloric acid is 60 mL/h and dosage of sodium perchlorate is 30 mL/h .Under this condition ,the average effluent COD is 44 mg/L and average removal rate is 80 .3% ,which can meet the requirements of the national discharge standard .%采用ClO2三相催化氧化工艺对焦化污水二沉池出水的处理进行了中试研究，考察了进水量、供气量、加药量等参数对焦化污水COD处理效果的影响，得出的最佳工艺条件为：进水量0．2m3／h，有效催化剂用量0．5m3，供气量10m3／h，盐酸投加量60mL／h，氯酸钠投加量30mL／h。最佳工艺条件下，平均出水COD为44 mg／L ，平均去除率为80．3％，能达到国家一级排放标准。