UASB＋CMBR＋活性炭吸附工艺处理油气田废水试验研究

STUDY ON UASB + CMBR + ACTIVATED CARBON ADSORPTION PROCESS TREATING DISPOSE GAS FIELD WASTEWATER

采用UASB＋CMBR＋活性炭吸附工艺对油气田废水进行了实验室小试研究。结果表明，经UASB＋CMBR工艺处理后，TSS的截留率在99％以上，COD、TOC、油类的去除率范围分别为：74％~94％、85．6％~96．9％、98％～99．9％，出水油类低于10mg／L。采用活性炭对该工艺出水进行达标实验研究，结果表明，活性炭对系统出水COD的去除效率为78．9％，COD去除效果非常显著，COD从379．4mg／L骤降到79．9mgm，表明UASB＋CMBR＋活性炭吸附工艺对此类废水有较好的去除效果。

UASB ＋ CMBR ＋ activated carbon adsorption process are used for the treatment of gas field wastewater. As a result, through UASB and CMBR process, TSS removal rate reached over 99%, the removal rate of COD, TOC, Oil were 74%~94%, 85.6%~96.9%, 98%~99.9% respectively, and the oil in effluent was under 10 mg/L. Following, activated carbon was used to satisfy the standards. The results showed that COD removal rate could reach 78.9%, from 379.4 mg/L to 79.9 mg/L. It could be concluded that UASB ＋ CMBR ＋ activated carbon adsorption process could treat this kind of wastewater well.