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Journal AWWA - Occurrence and Removal of Dissolved Organic Nitrogen in US Water Treatment Plants AWWA期刊-美国水处理厂中溶解有机氮的出现和去除
发布日期: 2006-10-01
流域中的溶解有机氮(DON) 可能与消毒剂反应形成致癌物质, 含氮消毒副产品。然而,尽管 DON介导反应的潜在意义 尚未对唐进行系统研究 在水处理过程中发生或去除。 两次季节性的原材料和材料取样活动 美国28家水处理厂的成品水 美国进行了调查,以量化发生率 还有移除唐。一种基于透析的新型血液透析系统 去除溶解无机物的预处理方法 氮气,然后高温燃烧 采用分析法测定DON。 结果表明,平均观察到的DON 原料氮的浓度为0.19 mg/L 水和0.15 mg/L氮气(对于成品水), 高温氧化技术的研制 本文所描述的适用于广泛使用的 饮用水行业。结果也是如此 证明水处理厂可以去除 大约20%的DON和添加聚合物的DON 臭氧有助于其去除。包括30个参考文献、表格和图表。
Dissolved organic nitrogen (DON) in watersheds may react with disinfectants to form carcinogenic, nitrogenous, disinfection byproducts. However, despite the potential significance of DON-mediated reactions, a systematic study has not been conducted for DON occurrence or removal during water treatment. Two seasonal sampling campaigns of raw and finished waters from 28 water treatment plants in the United States were conducted to quantify the occurrence and removal of DON. A new dialysis-based pretreatment method that removes dissolved inorganic nitrogen, followed by a high-temperature combustion analytical method, was used to measure DON. Results demonstrated that average observed DON concentrations were 0.19 mg/L nitrogen for raw waters and 0.15 mg/L nitrogen for finished waters, making the high-temperature oxidation technique described in this article suitable for widespread use in the drinking water industry. Results also demonstrated that water treatment plants remove approximately 20% of DON and that adding polymer and ozonation aid in its removal. Includes 30 references, tables, figures.
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发布单位或类别: 美国-美国给水工程协会
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