AF+BAF工艺处理焦化废水的试验研究

Study on coke plant wastewater treatment by AF+BAF process

试验采用AF+BAF工艺处理焦化污水,以水力停留时间为控制参数,考察该系统对焦化废水的处理效果。结果表明,AF+BAF工艺处理焦化废水是可行的。该系统运行稳定,操作简单,出水中COD、氨氮和挥发酚等指标均达国家一级排放标准。当进水COD负荷<0.5 kg/(m3.d),氨氮负荷<0.09 kg/(m3.d)时,系统对COD和氨氮的去除率分别可达86%和98%,出水平均COD<150 mg/L,氨氮<15 mg/L。

Coke plant wastewater is treated with AF ＋ BAF on laboratory scale,the results of the treatment of coke plant wastewater with different HRT have been studied. The treatment system has realized stable operation. The indexes such as COD,ammonia nitrogen and volatile phenol in effluent have all reached the national standard. The COD and ammonia nitrogen loading rate are less than 0.5 kg/（m^3·d） and 0.09 kg/（m^3·d） respectively, and up to 86% of COD and more than 98% of ammonia nitrogen could be removed. The average concentration in effluent for COD and ammonia nitrogen are less than 150 mg/L and 15 mg/L, respectively.