微生物法处理陕北采油污水

从陕北油区的靖边天赐湾注水井、子长余家坪选油站、青化砭选油站采集采油污水,利用高效石油降解菌CT-6的菌液以及加入营养物质的菌液两种方法进行了净化处理。实验结果为:靖边县天赐湾水样用不加营养物的实验菌株处理2 d后,石油类物质质量浓度为7.86 mg/L,达到国家石油类物质排放二级标准,8 d时,石油类物质质量浓度下降至4.21 mg/L,达到一级标准;子长余家坪选油站水样用不加营养物的实验菌株处理8 d后,石油类物质质量浓度为19.52 mg/L,达到国家石油类物质排放三级标准;青化砭选油站的水样用两种方法处理后水样中的含油量均没有明显下降。在青化砭选油站水样处理过程中,只给水样中投加菌体的处理效果优于给水样中添加菌体和营养物质的效果。

Microbial treatment of oil wastewater in Northern Shaanxi

The oil wastewater from Tianciwan, Yujiaping, and Qinghuabian oil stations in Northern Shaanxi was purified by two methods： using the oil-degrading strain CT-6 and adding nutrients. The results show that the oil content in the oil wastewater from Tianciwan Station in Jingbian County was 7.86 mg/L after two days of treatment using the test＇ strains without adding nutrients, reaching the Grade II National Emissions Standard for petroleum materials, and the oil content was 4.21 mg/L on the eighth day, reaching the Grade I National Emissions Standard for petroleum materials; the oil content in the oil wastewater from Yujiaping Station was 19.52 mg/L after eight days of treatment using the test strains without adding nutrients, reaching the Grade III National Emissions Standard for petroleum materials; and the oil content in the oil wastewater from Qinghuabian Station did not decrease significantly after treatment using the two methods. During the processing of the oil wastewater from Qinghuabian Station, the result of purification treatment using only strains was superior to that using both strains and nutrients.