PACT工艺强化处理煤化工废水小试

A pilot study on enhanced treatment of coal chemical wastewater by PACT process

通过在AO系统中投加活性炭形成PACT系统,并进行序批式试验,以探究其对煤化工这一典型废水中污染物的脱除效果。结果显示,投加活性炭可以明显提高对有机物的去除效果,确定PAC在PACT工艺中的最佳投加量为1.5 g/L;在最佳投加量下,由于体系中的“吸附-降解-再生-再吸附”过程,使COD、总酚、氨氮及总氮的去除效果都有了不同程度的提升。

PACT system was formed by adding activated carbon into AO system,and sequencing batch test was carried out to explore the removal effect of pollutants from coal chemical industry wastewater.The results show that the addition of activated carbon can significantly improve the removal effect of organic matter,and the optimal dosage of PAC in the PACT process is 1.5 g/L.Under the optimal dosage,due to the"adsorption-degradation-regeneration-re-adsorption"process in the system,the removal effect of COD,total phenol,ammonia nitrogen and total nitrogen has been improved in different degrees.