Application Study of Membrane Interface Detection Technology in Detailed Investigation of Petrochemical Site Pollution
With the continuous development of pe-troleum and chemical enterprises,some petrochemical enterprises are faced with the risk of contamination of soil and groundwater by runoff and leakage of raw and auxiliary materials. Accurately delineating the spatial distribution of contaminants and depositing media is a key aspect of risk control of contaminated sites. By using the membrane interface detection technology,the pollution status of an active petrochemical enterprise was described in detail. The results showed that the conductivity value can reflect the particle size of the medium. The conductivity value of fine sand was mainly in the range of 0～10 mS/m,while the conductivity val-ue of medium sand was generally greater than 10 mS/m. The medium in this site gradually transitioned from shallow fine sand to deep sand. The detection results of the flame ionization detector detected by the membrane interface accurately described the scope and degree of the three organic pollution plumes at the site. The com-prehensive detection results of the photoionization de-tector delineated the potential pollution range of the site as 4690 m2,and the detection value of photoionization higher than 1.2×107 μV was a basis for determining the presence of NAPLs in the site. The application of membrane interface detection technology can accurate-ly reflect the distribution of organic pollutants and their corresponding occurrence media in petrochemical sites,and can provide a basis for the formulation of subse-quent pollution site treatment plans.
万方数据
维普
