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采用板框式超滤装置对钢管厂冷却用乳化油废液进行处理试验,结果表明,板框式超滤器在压力低于0.40MPa,运行温度40-45℃条件下,配用PSF超滤膜,可将乳化油废液一次连续浓缩,含油量由2%增至40%-50%,体积浓缩20倍,超滤平均通量15-20L(m2h)-1;渗透液中含油量降至100mgL-1以下,油分截留率大于99%,COD截留率大于90%.
The plate-frame ultrafiltration device was used to treat the emulsified oil wastewater from steel pipe plant for cooling treatment. The results showed that the plate-frame ultrafilter was equipped with PSF ultra-pressure at the pressure lower than 0.40MPa and operating temperature 40-45 ℃ Filter, the emulsion oil can be a continuous concentration of waste, oil content increased from 2% to 40% -50%, 20 times the volume concentration, ultrafiltration average flux of 15-20L (m2h) -1; permeate oil content Down to 100mgL-1 the following, the oil retention rate of more than 99%, COD retention rate of more than 90%.