复合厌氧-化学沉淀-多段好氧工艺处理有机胺废水

Treating organic amine wastewater by using hybrid anaerobic-chemical precipitation-multiplestage aerobic process

江山化工原采用A/O+SBR工艺处理有机胺废水,存在处理量有限、出水不达标、运行费用高等缺点,后来决定采用复合厌氧+化学沉淀+多段好氧工艺进行改造。一期工程经100d左右的调试,正常运行后复合厌氧池COD平均去除率为51.55%,预曝气池氨氮去除率为97.97%,保证进入好氧池的TN在120mg/L以下,出水COD、NH3-N、BOD5分别为365.6mg/L、37.2mg/L、43.5mg/L,组合系统COD、BOD5去除率可达90.8%、97.0%,出水达到设计要求。改造后工艺成功解决了原系统存在的问题,具有良好应用前景。

AO- SBR process was originally carded out to treat organic amine wastewater in Jiangshan Chemical, but there were many problems, such as limited handling capacity, no- reaching standards and high disposal cost. It is determined to use hybrid anaerobic - chemical precipitation- multiplestage aerobic process to reform. Through more than 100 days＇ commissioning, first - stage project has nm normally. Average removal rate of COD in hybrid anaerobic reactor is 51.55 %, removal rates of ammonia- nitrogen of pre - aeration tank are 97.97 % after normal operation. It is guaranteed TN that flow into aerobic tank is below 120mg/L, the effluent COD, ammonia and BOD5 is 365.6mg/L, 37.2mg/L, 43.5mg/L respectively, removal rate of COD and BOD5 in integrated system can reach to 90.8%, 97.0%. The effluent meets the design requirements. Reformed process has good prospects for application.