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普光天然气净化厂联合装置检修时需要使用药剂对净化装置设备及其附属管网进行除臭清洗钝化处理,产生大量检修污水。常规的检修污水常规处理方法是将污水拉运到20多公里外的处理点,集中处理达标合格后再拉运到回注井回注,环境风险和处理成本较高。我们经过大量实验优选出检修污水与气田产出水混合比例,利用采气厂赵家坝污水处理站现有污水处理设施开展检修污水处理,处理过程不需要拉运费用、不新增加处理成本,处理后水质指标达到现行碎屑岩油田回注水标准。
Puguang natural gas purification plant when the joint unit overhaul need to use pharmaceuticals on the purification equipment and its affiliated pipe network deodorant cleaning passivation, resulting in a large number of overhaul sewage. Routine overhaul of conventional sewage treatment is to pull the sewage to more than 20 kilometers away from the treatment points, centralized treatment of qualified and then pulled back to the injection well injection, environmental risks and higher processing costs. After a large number of experiments, we have selected the proportion of effluent from the overhaul sewage and gas field and utilized the existing sewage treatment facilities of the Zhaojiaba Sewage Treatment Plant of the gas recovery plant to carry out overhaul and sewage treatment. The treatment process does not need the cost of pulling and transporting, After treatment, the water quality index reached the current standard of injection water of clastic oil field.