【摘要】 针对苏南某化工企业油漆、涂料、树脂和高沸点溶剂等产品生产过程中排放的高浓度化工废水处理,中试结果表明:当两相厌氧COD负荷为5.6 kg/(m3·d),一级好氧COD负荷1.47 kg/(m3·d),二级好氧负荷COD 0.035kg/(m3·d),且废水温度高于20℃时,两相厌氧—二级好氧生化系统的COD平均去除率高于95%;工程化应用表明:该工艺具有处理效果好、耐冲击、运行稳定、处理成本低的优点,当废水温度维持在20℃以上时,两相厌氧—二级好氧生化系统COD平均去除率达98%以上。更多还原

【Abstract】 According to the treatment of highly concentrated chemical wastewater in the production of painting,coating,resin and solvent with high boiling point at a chemical company in southern Jiangsu,the result obtained from the pilot-scale plant indicates that the COD average removing rate of two-phase anaerobic-two-stage aerobic system is higher than 95% when the conditions are as follows:two-phase anaerobic COD volume loaded is 5.6 kg/(m3·d),the first stage aerobic COD volume loaded 1.47 kg/(m3·d),the second stage aerobic COD volume loaded 0.035kg/(m3·d),and the wastewater temperature over 20 ℃.The engineering application shows that the advantages of this process are high treatment effect,strong impact resistance,stable operation and low cost.The average COD removing rate can even be over 98% when the wastewater temperature keeps at higher than 20 ℃.更多还原