کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4482239 1316852 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formation of new brominated disinfection byproducts during chlorination of saline sewage effluents
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Formation of new brominated disinfection byproducts during chlorination of saline sewage effluents
چکیده انگلیسی

Chlorination could be the most cost-effective method for disinfecting saline sewage effluents resulting from toilet flushing with seawater. Upon chlorination, the high levels of bromide ions in saline sewage effluents (up to 32 mg/L) can be oxidized to hypobromous acid/hypobromite, which could then react with organic matter in the sewage effluents to form brominated disinfection byproducts (Br-DBPs). In this study, primary and secondary saline sewage effluents were collected and chlorinated at different chlorine doses, and a powerful precursor ion scan method using ultra performance liquid chromatography/electrospray ionization-triple quadrupole mass spectrometry was adopted for detection and identification of polar Br-DBPs in these samples. With the new method, 54 major polar Br-DBPs were detected in the chlorinated saline effluents and six of them were newly identified as wastewater DBPs, including bromomaleic acid, 5-bromosalicylic acid, 3,5-dibromo-4-hydroxybenzaldehyde, 3,5-dibromo-4-hydroxybenzoic acid, 2,6-dibromo-4-nitrophenol, and 2,4,6-tribromophenol. The formation of polar Br-DBPs, especially those newly detected ones, during chlorination of the saline effluents was studied. For the secondary saline effluent, various polar Br-DBPs formed and reached their maximum levels at different chlorine doses, whereas for the primary saline effluent, the formation of polar Br-DBPs basically kept increasing with increasing chlorine dose. Compared with the secondary saline effluent, the primary saline effluent generated fewer and less Br-DBPs and rarely generated nitrogenous Br-DBPs.

Figure optionsDownload high-quality image (106 K)Download as PowerPoint slideHighlights
► Numerous polar Br-DBPs were detected in chlorinated saline sewage effluents.
► Six polar Br-DBPs were newly identified as wastewater DBPs.
► Br-DBPs in chlorinated primary and secondary saline sewage effluents were compared.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 47, Issue 8, 15 May 2013, Pages 2710–2718
نویسندگان
, , , ,