滩涂石油污染高级氧化修复技术

发布时间：2018-06-27 14:08

  本文选题：石油烃 + 沉积物　； 参考：《环境工程学报》2016年05期

【摘要】：在模拟原沉积物弱碱性及含水率的条件下,分别研究了2种高级氧化反应体系:H_2O_2辅助加入催化剂Fe SO4或Fe2(SO4)3及Na2S2O8辅助加入催化剂Fe SO4或Ca O及热催化对污染滩涂沉积物中石油烃的去除效果及其影响因素。同时,还模拟研究了长江口潮汐作用对滩涂石油污染修复效果的影响。研究表明:H_2O_2与样品的质量投加比为0.05,FeSO4和Fe2(SO4)3与H_2O_2摩尔投加比均为0.1时,石油烃去除率分别达到48.9%和57.4%;Na2S2O8本身氧化能力较强,单一Na2S2O8与样品的质量比大于0.01时,石油烃去除率达到46%以上;而在Na2S2O8最佳投加比条件下,Fe SO4、Ca O与Na2S2O8摩尔比为0.05和0.9时,去除率分别达到60.4%和51.3%以上,同时最佳催化温度为50℃。潮汐作用对芬顿试剂氧化修复滩涂石油污染具有促进作用,而高浓度污染滩涂区域建议采用阻隔修复。
[Abstract]:Under the condition of simulating the weak alkalinity and moisture content of the primary sediment, The removal efficiency of petroleum hydrocarbon from polluted beach sediment by adding FeSO _ 4 or Fe _ 2 (so _ 4) _ 3 and Na _ 2S _ 2O _ 8 as auxiliary catalyst and thermal catalysis were studied respectively by adding FeSO _ 4 or Fe _ 2 (so _ 4) _ 3 and thermal catalysis of two kinds of advanced oxidation reaction systems: W / S _ 2O _ 2 and + Fe _ 2 (so _ 4) _ 4 or Fe _ 2 (so _ 4) _ 3. At the same time, the effects of tidal action on oil pollution remediation in the Yangtze Estuary are simulated. The results show that when the mass ratio of O _ 2O _ 2 to the sample is 0.05% FeSO _ 4 and Fe _ 2 (so _ 4) _ 3 to H _ 2O _ 2 are both 0.1, the removal rate of petroleum hydrocarbon is 48.9% and 57.4% respectively. When the mass ratio of single Na _ 2S _ 2O _ 8 to the sample is greater than 0.01, The removal rate of petroleum hydrocarbon is more than 46%, and the removal rate is 60.4% and 51.3% respectively when the molar ratio of FeSO _ 4 and Na _ 2S _ 2O _ 8 is 0.05 and 0.9, and the optimum catalytic temperature is 50 鈩，

本文编号：2074164