化学驱含油污水外排处理技术研究进展

Research Progress on Discharge Treatment Technologies for Oily Sewage Produced by Chemical Flooding

化学驱三次采油技术的广泛应用导致含油污水呈现出成分复杂、黏度大和乳化严重等特点,而含油污水处理问题影响着我国石油工业的可持续发展。因此,在了解化学驱技术,并研究其含油污水特点、外排现状和标准的基础上,从油水分离技术、CODCr去除技术和除硫技术三方面阐述了化学驱污水处理技术的研究进展。由于每种方法均存在缺点和局限,联系实际讨论并评价了几种方法结合形成的多级处理工艺,为化学驱外排水处理技术的进一步发展提供了参考依据和研究思路。

With the wide application of chemical flooding enhanced oil recovery technology,the oily sewage displays the characteristics of complex composition,high viscosity and severe emulsification.The treatment problem of oily sewage affects the sustainable development of China's petroleum industry.Therefore,on the basis of understanding chemical flooding technology and studying the characteristics,discharge status and standards of its oily sewage,the research progress of chemical flooding sewage treatment technology is expounded from three aspects,namely oil-water separation technology,CODCr removal technology,and sulfur removal technology.Because of the shortcomings and limitations of each method,the multistage treatment technology formed by combining several methods is discussed and evaluated,which provides a reference and research idea for the further development of chemical flooding discharge treatment technology.