微电解法处理含压裂液废水的实验研究

本文以瓜尔胶为主要成分模拟含压裂液废水,采用微电解工艺,研究了Fe/C质量比、进水pH、停留时间对CODCr去除率的影响。由数据得知,当Fe/C质量比5:1,进水pH值为3.0,反应90 min条件下,CODCr从2 300 mg/L降到1 159 mg/L,CODCr的去除率达到49.6%。实验结果表明,微电解法对含压裂液高浓度煤层气产出水有较好的处理效果,该方法可与生化或人工湿地等技术配合,对出水进一步处理达标排放或利用。

EXPERIMENT RESEARCH ON TREATING FRACTURING FLUID WASTEWATER BY IRON-CARBON MICRO-ELECTROLYSIS

This thesis mainly simulated the fracturing fluid wastewater with hydroxypropyl guar gum.The influence of Fe/C weight ratio,pH,reaction time to Microelectrolysis are considered and the facters that influenced the removal rate of CODCr were investigated.The optimal conditions of the experiment were determined as follows：The CODCr was reduced from 2 300 mg/L to 1 159 mg/L,and the removal rate was 49.61% in the process of iron-carbon micro-electrolysis with the process conditions were： m（Fe）/m（C）=5：1,pH=3.0,t=90min.The experiment results shows that the iron-carbon micro-electrolysis has good processing effects to the highly concentrated coal bed methane produced water,and this method could fit well with biotechnology or constracted wetlands process,which make a advanced treatment to effluent water inorder to achieve discharge standards or to be reused.