斜板溶气气浮装置处理油田污水实验

摘要

东北地区某油田采油污水经处理后水质达标率低，为了提高水质达标率，污水处理采用斜板溶气气浮技术，研究斜板间距、回流比、表面负荷、絮凝剂投加量、气泡层厚度等对污水处理效果的影响，确定最优的参数值。在连续45天的现场试验中，该装置运行稳定。实验表明，与传统的溶气气浮法相比，斜板溶气气浮法处理含油污水的效果持续、稳定，处理后水体含油量可控制在10 mg/L以下。%Wastewater quality compliance rate is low after treatment in an oilfield in North-east China, in order to improve the water quality compliance rate, inclined plate dissolved air flotation technology is used in sewage water treatment.Research on the wastewater treat-ment effect after using inclined plate spacing, reflux ratio, surface loading, flocculant dos-age,gas bubble layer thickness etc.,to determine the optimal parameter values.In 45 con-secutive days’experiments,the operation of the device is stable,the result is superior.Ex-periments show that compared to the traditional gas dissolved air floatation,inclined plate dis-solved air floatation processing oily wastewater effect that can be sustained and stable, after processing the oil content in water control below 10 mg/L.