摘要
采用破胶-混凝-化学氧化-超滤组合工艺处理油田钻井废弃泥浆,先投加80 m L/L的5%Ca Cl2溶液进行破胶,通过固液分离得到泥浆压滤液,向泥浆压滤液中分别投加200 m L/L的5%Fe SO4溶液和20 m L/L的0.05%PAM溶液进行混凝处理,再向混凝上清液中投加3.5 m L/L的30%H2O2溶液,氧化反应100 min,最后超滤处理80 min,出水CODCr去除率达到96.6%,出水水质达到GB 8978—1996《污水综合排放标准》一级排放标准。试验结果表明,该工艺在处理油田钻井废弃泥浆方面具有较好的效果。
Gel breaking-coagulation-chemical waste drilling mud of oilfield. First of all, adding 80 was gotten through solid-liquid separation; secondly, oxidation-ultrafiltraion combined process was used to treat mL/L 5% CaCl2 solution for gel breaking, the press filtrate adding 200 mL/L 5% FeS04 solution and 20 mL/L 0.05% PAM solution into the press filtrate for coagulation; and then, adding 3.5 mL/L 30% H2O2 solution into the supernatant liquor; finally, with 100 minutes of oxidation and 80 minutes of ultrafiltration, the removal rate of CODcr in the effluent water reached 96.6%, the effluent water quality met the specification for grade 1 in GB 8978-1996 Integrated Wastewater Discharge Standard. The results of the test showed that, using the said process to treat waste drilling mud of oilfield could obtain good effect.
出处
《工业用水与废水》
CAS
2016年第5期80-83,共4页
Industrial Water & Wastewater
关键词
钻井废弃泥浆
破胶
混凝
化学氧化
超滤
waste drilling mud
gel breaking
coagulation
chemical oxidation
ultrafiltration
