中文摘要：

油田生产过程中排出的超标污水既污染土壤环境又危及水生资源,必须对油田污水进行在线水质监测,实时反映污染物指标,减小对环境的威胁。基于近红外光的吸收透射和散射原理,设计了能同时检测出油田污水中油分和悬浮物含量两个参数的测算模型;选择合适波长,利用三波长法进行光电检测;搭建了插入式污水油分和悬浮物在线检测系统。实验结果表明：该测算模型准确、可靠,可同时检测出待测液中的水中油分和悬浮物的含量,相对于常规的水中油分红外光度检测法和水中悬浮物重量检测法,提出方法的检测误差小于6%,该方法对实际应用有较大参考的价值。

英文摘要：

The pollution of excessive sewage of oil production is harmful to the soil environment and aquatic resources. It is necessary to monitor the water quality of oilfield, indentify the pollutant index and reduce the pollution of environment simultaneously. Based on transmission and scattering theory of nearinfrared light, a measurement model was proposed to test oil and suspended matter concentration in sewage at the same time. An appropriate light wavelength was selected, which was employed to realize the photoelectric detection using three-wavelength method. Furthermore, a plug-in online monitoring system was developed to carry out the experiments. The experimental results show that the proposed method has the advantages of high accuracy and reliability, and the developed system can simultaneously detect the components of oil and suspended matter in the sewage, and the deviation error of the system is less than 6% in comparison with the conventional method of infrared luminosity to detect the components of oil and the weighting method to detect the suspended matter in sewage. Therefore, the proposed method provides great reference for application in practice.