Study On Sewage Treatment Technology For Yihe Oilfield

Yihe oilfeilds is a low permeability oil fields,the water quality of injection water demanding,oil field water standards to achieve?SY/T5329-94?A3 level.Through suspended sludge filtration process Yihe oily sewage treatment capacity of 3000m³/d of industrial field trials,the use of physical and chemical methods?adding water purifying agent?partial dissolution of the sewage in the state of adsorption of suspended solids and colloidal particles from,the formation of small suspended particles,separated from the water;then used coagulant in the wastewater and suspended particles of various particles coagulate into large dense flocs;to rely on cyclone and filter water and other fluid mechanics,the suspension Sludge filtration device to separate floc and water fast.For a comprehensive assessment of the suitability of suspended sludge treatment technology,water quality according to the scene,were suspended sludge filter layer of suspended sludge generated test;by?50mg/l?50-100 mg/l??100 mg/l three levels to analyze the effect of the oily water treatment susceptibility testing;adjusted according to?50mg/l?50-300 mg/l??300 mg/l at three levels to analyze the treatment effect of water sensitivity test suspensions;were suspended sludge filter oil,suspended solids and impact test;and carried out the impact of increasing the capacity test to assessing the operation of suspended sludge filtration effect.Yihe low permeability reservoir to meet water requirements of the development,simplify process,to find a simple process,the process short,good effect,stable operation of the technical approach,and the treated sewage water flooding can reach the standard?SY/T5329-94?A₃-level requirements.