稠油污水处理高效净水剂的研制与应用

Study and Application of High Efficiency Clarifier of Sewage in Wastewater Treatment with Heavy Oil

针对新疆油田稠油污水乳化严重、油水密度差小等的特点,认为高效净水剂的研制和开发是稠油污水处理的关键。通过实验筛选研制出具有高效净水作用的药剂,结果表明:当凝聚剂XZ-1投加量为125～150mg/l,助沉剂XZ-2为60～80mg/l,助凝剂XZ-3为4～6mg/l,使处理后的滤前水油含量≤10mg/l、悬浮物≤8mg/l,COD≤120mg/l。现场试验验证了高效净水剂性能优良,能够满足新疆油田稠油污水处理达标回注回用及排放。

Aiming at the characteristics of wastewater with heavy oil in Xinjiang Oilfield, such as serious emulsification and small density difference between oil and water, it is considered that the manufacture and development of high efficiency clarifier of sewage is the key of the wastewater treatment with heavy oil. A high efficiency clarifier of sewage has been studied by test, the results show that the oil content is less than 10mg/l, the suspended solid content is less than 8mg/l and COD is less than 120mg/l before filtering when floc-culant XZ -1 is used with the quantity of 125 ~ 150mg/ 1, with precipitator XZ - 2 of 60 ~ 80mg/l, and with co - flocculant XZ - 3 of 4 ~ 6mg/l. The tests validate that the sewage with heavy oil of Xinjiang Oilfield treated by the high efficiency clarifier can fit the quality requirement of the injected water, reused water and discharged water.