水力空化联合臭氧降解油田污水初步试验研究  

Preliminary Experimental Investigation of Hydrodynamic Cavitation and Ozone Combination in Degrading Oilfield Wastewater

作　　者：翟磊[1] 董守平[1] 冯高坡[1] 马红莲[1] 

机构地区：[1]中国石油大学,北京102249

出　　处：《环境科学与技术》2009年第B06期320-323,共4页Environmental Science & Technology

基　　金：北京市重点学科建设资助项目（XK114140594）.

摘　　要：针对油田开采后期，污水成分复杂且各种常规水处理方法都有其局限性的问题，提出了水力空化技术与臭氧氧化技术联合工艺处理油田污水的设想。利用臭氧氧化与空化效应，采用多孔孔板建立了水力空化污水处理系统，对油田现场污水进行了尝试性的试验研究。分别对臭氧质量浓度、孔板人口压力以及不同孔板结构对水样COD的降解效果进行了实验研究。结果表明，水力空化装置联合臭氧气体能对油田污水COD产生较大的去赊率，孔板入口压力在0.20MPa附近以及系统的进气量在70L／h时COD的去除率相对较高；水力空化与臭氧在降解COD过程中存在互相强化的关系；孔板型空化水处理系统对降低油田污水的COD含量具有一定的作用，对于分析水力空化联合臭氧作为油田污水处理技术的可行性有一定参考价值。In the late stage of oilfield development, the composition of wastewater is complex, and the conventional water treatment methods are unsatisfactory. To solve this problem, the idea of hydrodynamic cavitation and ozone combination in degrading oilfield wastewater was presented. Wastewater treatment system of hydrodynamic cavitation is established by using the structure of multi-hole orifice according to the theory of ozone oxidation and cavitation effect, and then making the trial test to oilfield wastewater from working site. Degrading the chemical oxygen demand （COD） of oilfield wastewater was examined by hydrodynamic cavitation combined with ozone. The effects of using hydrodynamic cavitation and ozone oxidization alone or combined in degrading the COD of oilfield wastewater are analyzed and contrasted in this experiment. The experimental results show that the effects of degrading COD are the best when the orifice inlet pressure is about 0.2 megapascal and when the air intake is about 70 liters an hour. The orifice device has a certain role in decreasing COD content of oilfield wastewater, but the removal efficiency is not high. The investigation result has a certain reference value for analyzing the feasibility of hydrodynamic cavitation as a supplemental treatment technology for oilfield wastewater.

关 键 词：空化 臭氧 联合 降解 污水 

分 类 号：X131.2[环境科学与工程—环境科学]