共查询到19条相似文献,搜索用时 640 毫秒
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本文通过实验及BOD动力学方程对胜利油田孤六、孤一联采油废水的可生化性进行了研究。研究结果表明:采油废水的生化氧化速度常数k值较小,生化氧化速度m值不高,说明采油废水生化处理速度慢,反应时间长;BOD5/COD大于0.3,CODnb/COD小于0.5,说明采油废水的可生化性尚好,氧化彻底。生化法是处理采油废水的较好方法。 相似文献
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复极性粒子群电极电解法在化工废水处理中的应用进展 总被引:1,自引:0,他引:1
介绍了复极性粒子群电极电解法处理废水的基本原理和实验装置,概述了该法在染料、采油化工废水的研究进展,评述了该法处理废水的特点。 相似文献
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采油废水回注处理技术 总被引:14,自引:1,他引:13
采油废水处理后回注是减少环境污染,保障油田可持续开发的一个重要途径。较系统地介绍了采油废水处理技术和国内外最新发展动态,着重对膜分离技术处理采油废水方法进行了分析、比较和讨论,认为膜分离技术处理采油废水具有广阔的发展前景。 相似文献
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萘磺酸类有机废水的络合萃取研究 总被引:5,自引:0,他引:5
采用络合萃取法对萘磺酸类有机废水进行预处理。选用了三烷基胺(7301)、三辛胺作萃取剂,用NaOH、KOH、NH3.H2O作反萃剂,分别进行萃取与反萃实验,确定了最优良的萃取与反萃体系。同时,研究了萃取剂与稀释剂比例、废水pH、油水比以及萃取温度对废水萃取效果的影响及反萃时碱液的最佳质量分数和油碱比。 相似文献
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Polymer-flooding process is one of tertiary oil extraction technologies. It has stepped into industrialization application period in Daqing Oilfield (China) in recent years. It plays an increasingly important role in the oil exploitation, but around 60 million ton polymer-flooding wastewater is produced per day with oil extraction together. Therefore, the treatment and reuse of wastewater becomes very significant. Experiments show that the polymer-flooding wastewater can replace freshwater to be reused to confect polymer solution after removing total dissolved solids (TDS) by electrodialysis technology. This treatment technology can not only decrease environmental pollution resulted by wastewater discharge, but also achieve closed-circuit of polymer-flooding wastewater during crude oil extraction. It has significant effect for protecting environment and saving water resource. After carrying out lots of experiments in the lab, the pilot-test electrodialysis operation has been applied to treating polymer-flooding wastewater and received better economic effect. But serious ion-exchange membrane fouling (especially for anion membrane) is the main problem that holds back this technology's further application. The emphasis of this research is to study the effect of polymer-flooding wastewater on anion membrane performance. Oilfield wastewater is a kind of multiphase system that containing solid suspend, liquid suspend, and dissolved salt. A small-scale 5-compartment electrodialysis was developed to study the effect of main fouling substances of polymer-flooding wastewater (solid suspension, crude oil and polymer) on the performance and apparent characteristics of anion membrane from microcosmic (membrane surface resistance, average current, desalination rate, etc.) and macroscopical (scanning electron microscope and atomic force microscope, AFM) views, respectively. The concentration of cations is measured with atom absorbing spectrum (PERKIN-ELMER 703), the concentration of anions is measured with ion chromatogram (DLONEX 4500i) and the sum amount of ionic concentration is TDS. The experimental results show that fractional solid suspension congregated on the surface of, or inside, anion membrane and fouled membrane. Crude oil formed a compact oil film after being absorbed, which affects ions to get through ion-exchange membrane. The polymer may congregate on the surface of anion membrane, and had some influence for permeation of anion membrane. The membrane fouling changes little with time going on. 相似文献
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