文章基本信息

标题：Application of UV/TiO2 Advanced Oxidation in Treating Oily Compost Leachate Generated During Oily Sludge Composting
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作者：Reza Tajik ; Kazem Godini ; Reza Saeedi 等
期刊名称：Civil And Environmental Engineering Reports
电子版ISSN：2080-5187
出版年度：2019
卷号：29
期号：3
页码：241-251
DOI：10.2478/ceer-2019-0039
出版社：Walter de Gruyter GmbH
摘要：In this work, oily compost leachate (OCL) generated during oily sludge composting was treated by UV/TiO 2 . OCL subsamples, gathered bi-weekly from the composting process, were thoroughly mixed and then filtered to reduce the solution turbidity. The effects of initial chemical oxygen demand (COD) concentration, UV type (A and C), pH (3, 7, and 11), reaction time (30, 60, 90, and 120 min), and TiO 2 concentration (0.5, 1, and 2 g L −1 ) on the total petroleum hydrocarbons (TPH) and COD removal from OLC were examined. The results showed that the efficiency of the process improved with the increase in TiO 2 concentration and reaction time and the decrease in pH and pollutant concentration. In the optimal conditions (UV-C, TiO 2 concentration of 1 mg L −1 , reaction time of 90 min, and pH of 3), 52.29% of TPH was removed. Moreover, 36.69 and 48.3% of TPH was reduced by UV-A/TiO 2 and UV-C/TiO 2 , respectively in real conditions of OCL (pH = 6.3, COD = 1501. 24 mg L −1 , and TPH = 170.12 mg L −1 ) during the 90 min reaction time. The study verified that UV/TiO 2 has the potential to be applied to treat OCL..
关键词：total petroleum hydrocarbons ; oily sludge ; oily compost leachate ; UV ; TiO2