河北省化工企业多环芳烃污染土壤化学氧化小试研究

Study on chemical oxidation of polycyclic aromacic hydrocarbons polluted by chemical enterprises in Hebei Province

本文以河北省某化工厂为例,以化学氧化法为研究重点,从氧化剂选择、配比和用量考虑,分析不同氧化剂方案下,场地多环芳烃污染物质的去除效果,综合考虑修复目标与经济性,以小试中修复效果监测数据和修复效果覆盖曲线分析,确定以过硫酸钠作为污染土壤化学氧化法的修复试剂,其污染物质最大去除效率达到93%,同时指出在修复过程中,需根据现场实际进行加药或生产性实验。

This paper takes a chemical plant in Hebei Province as an example.Taking chemical oxidation as the research focus,From the selection of oxidants,the ratio and dosage of oxidants,Analysis of the removal effect of polycyclic aromatic hydrocarbon pollutants on the site under different oxidant schemes,Considering the restoration target and economy,Based on the analysis of the repair effect monitoring data and the repair effect coverage curve in the small test,it is determine the sodium persulfate as a repairing agent for chemical oxidation of contaminated soils,the maximum removal efficiency of pollutants reaches 93%.In combination with the repair of uncovered substances in the small test,it was determined that according to the actual dosing or production experiment in the repair process.