Advanced oxidative processes and membrane separation for micropollutant removal from biotreated domestic wastewater

被引:18
|
作者
Silva, Larissa L. S. [1 ]
Sales, Julio C. S. [1 ]
Campos, Juacyara C. [1 ]
Bila, Daniele M. [2 ]
Fonseca, Fabiana V. [1 ]
机构
[1] Univ Fed Rio de Janeiro, Escola Quim, Av Athos Silveira Ramos 149, Rio De Janeiro, Brazil
[2] Univ Estado Rio de Janeiro, Dept Engn Sanitaria & Meio Ambiente, R Sao Francisco Xavier 524, Rio De Janeiro, Brazil
关键词
UV/H2O2; Reverse osmosis; Micropollutants; Sewage; ENDOCRINE DISRUPTING COMPOUNDS; REVERSE-OSMOSIS; EMERGING MICROPOLLUTANTS; ESTROGENIC ACTIVITY; ACTIVATED-SLUDGE; TREATMENT PLANTS; ORGANIC-MATTER; COMPOUNDS EDCS; PHOTO-FENTON; NANOFILTRATION;
D O I
10.1007/s11356-016-7312-y
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The presence of micropollutants in sewage is already widely known, as well as the effects caused by natural and synthetic hormones. Thus, it is necessary to apply treatments to remove them from water systems, such as advanced oxidation processes (AOPs) and membrane separation processes, which can oxidize and remove high concentrations of organic compounds. This work investigated the removal of 17 beta-estradiol (E2), 17 alpha-ethinylestradiol (EE2), and estriol (E3) from biotreated sewage. Reverse osmosis processes were conducted at three recoveries (50, 60, and 70 %). For E2 and EE2, the removals were affected by the recovery. The best results for RO were as follows: the E2 compound removal was 89 % for 60 % recovery and the EE2 compound removal was 57 % for 50 % recovery. The RO recovery did not impact the E3 removal. It was concluded that the interaction between the evaluated estrogens, and the membrane was the major factor for the hormone separation. The AOP treatment using H2O2/UV was carried out in two sampling campaigns. First, we evaluated the variation of UV doses (24.48, 73.44, 122.4, and 244.8 kJ m(-2)) with 18.8mg L-1 of H2O2 in the reaction. EE2 showed considerable removals (around 70 %). In order to optimize the results, an experimental design was applied. The best result was obtained with higher UV dose (122.4 kJ m(-2)) and lower H2O2 concentration (4 mg L-1), achieving removal of 91 % for E3 and 100 % for E2 and EE2.
引用
收藏
页码:6329 / 6338
页数:10
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