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首页> 外文期刊>Fresenius Environmental Bulletin >REMOVAL OF ETHYLENE DICHLORIDE FROM PETRO CHEMICAL WASTEWATER USING ADVANCED OXIDATION PROCESSES (AOPS)
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REMOVAL OF ETHYLENE DICHLORIDE FROM PETRO CHEMICAL WASTEWATER USING ADVANCED OXIDATION PROCESSES (AOPS)

机译：使用高级氧化工艺（AOPS）去除石油化工废水中的二氯乙烯

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摘要

Ethylene Dichloride (EDC) is the most abundant chlorinated groundwater pollutant. New environment-friendly approaches for the removal of EDC that do not bring about volatilization of the compound are required. In this study, different advanced oxidation processes (AOPs) were shown to effectively remove EDC from petro-chemical wastewa-ter. The results of experiments showed that catalyst loading of 0.1 g/l TiO_2 was the optimum and further increase in the TiO_2 loading reduced the removal efficiency. Hence, this amount was used as the catalyst dosage for the photo-catalytic reactions. In the present study, the influences of hydrogen peroxide on the photocatalytic degradation of EDC under UV light irradiation was investigated. Optimum H_2O_2 value was 1.0 mM. The UV/ H_2O_2 / Fe(Ⅲ) process completely removed EDC after 60 min. Processes comparison showed that radiation and H_2O_2 are not sufficient for EDC oxidation and complete oxidation increased in the presence of Fe(Ⅲ) with UV radiation. The experimental data showed that the photocatalytic degradation of EDC can be simulated by using pseudo-first-order reaction rate expression.
机译：二氯乙烷（EDC）是最丰富的氯化地下水污染物。需要用于去除EDC的新的环境友好的方法，其不会引起化合物的挥发。在这项研究中，不同的高级氧化工艺（AOP）被证明可以有效地从石化废水中去除EDC。实验结果表明，最佳的催化剂负载量为0.1 g / l TiO_2，进一步增加TiO_2的负载量会降低去除效率。因此，该量用作用于光催化反应的催化剂剂量。在本研究中，研究了过氧化氢对紫外光照射下EDC的光催化降解的影响。 H_2O_2的最佳值为1.0 mM。 60分钟后，UV / H_2O_2 / Fe（Ⅲ）过程完全去除了EDC。过程比较表明，辐射和H_2O_2不足以进行EDC氧化，在Fe（Ⅲ）存在下，UV辐射会完全氧化。实验数据表明，利用拟一级反应速率表达式可以模拟EDC的光催化降解。

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