SGER: ROLE OF ANAEROBIC DIGESTION IN N-NITROSODIMETHYLAMINE (NDMA) FORMATION IN MUNICIPAL WASTEWATER TREATMENT PLANTS: SOURCE OR SINK

SGER：厌氧消化在市政废水处理厂 N-亚硝基二甲胺 (NDMA) 形成中的作用：源头或汇

• 批准号: 0610358
• 负责人: Spyros Pavlostathis
• 金额: $ 6万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-05-15 至 2007-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0610358&HistoricalAwards=false
• 关键词: SGER; ROLE; ANAEROBIC; DIGESTION; NITROSODIMETHYLAMINE

0610358PavlostathisThis proposal proposes the potential of anaerobic digesters to produce or degrade NDMA and NDMA precursors. N-nitrosamines, especially N-nitrosodimethylamine (NDMA) and N-nitrosodiethylamine (NDEA), are extremely potent carcinogens with cancer potencies much higher than those of trihalomethanes, for example, and are listed on the 2003 CERCLA Priority List of Hazardous Substances (U.S. EPA, 2003). Although industrial applications of nitrosamines in rocket fuel, polymer and rubber production, etc. have largely been curtailed, nitrosamines continue to be common environmental pollutants as side-products or impurities in many food, cosmetic, pharmaceutical and pesticide products, and in tobacco smoke (DHHS, 2002). Research in recent years has shown that nitrosamines, particularly NDMA, can be generated in water treatment systems by chlorine-based disinfection processes (particularly chloramination), making them an important emerging group of potentially hazardous disinfection byproducts (DBPs).Strengths of this proposal includes the fact that the PIs have identified an unexplored facet of Waste Water Treatment Plant operation that could significantly impact NDMA contributions to natural waters. The research assesses potential formation or removal of NDMA precursors. The research also includes field-testing for precursors at municipal treatment plant anaerobic digestors, testing in laboratory-scale digestors, and biotransformation potential of NDMA and its precursors under conditions prevalent in an anaerobic digestor. NDMA and N-nitrosoamines pose sever health and ecological risks. If NDMA is formed in anaerobic digesters, and these impact Waste Water effluent streams, then it would be valuable to develop/invent methods to decrease their formation.

0610358Pavlostathis 该提案提出了厌氧消化池产生或降解 NDMA 和 NDMA 前体的潜力。 N-亚硝胺，特别是 N-亚硝基二甲胺 (NDMA) 和 N-亚硝基二乙胺 (NDEA)，是极强致癌物，其致癌效力远高于三卤甲烷等，并被列入 2003 年 CERCLA 危险物质优先清单（美国 EPA，2003 年）。 尽管亚硝胺在火箭燃料、聚合物和橡胶生产等方面的工业应用已大大减少，但亚硝胺仍然是常见的环境污染物，作为许多食品、化妆品、药品和农药产品以及烟草烟雾中的副产品或杂质（DHHS，2002）。近年来的研究表明，亚硝胺，特别是 NDMA，可以通过氯基消毒过程（特别是氯胺化）在水处理系统中产生，使它们成为一组重要的新兴潜在危险消毒副产品 (DBP)。该提案的优点包括以下事实：PI 已经确定了污水处理厂运营中尚未探索的方面，该方面可能会严重影响 NDMA 对自然环境的贡献。 水域。 该研究评估了 NDMA 前体的潜在形成或去除。该研究还包括在市政处理厂厌氧消化器中对前体进行现场测试、在实验室规模的消化器中进行测试，以及在厌氧消化器中普遍存在的条件下 NDMA 及其前体的生物转化潜力。 NDMA 和 N-亚硝胺造成严重的健康和生态风险。如果 NDMA 在厌氧消化器中形成，并且这些影响废水流出流，那么开发/发明减少其形成的方法将是有价值的。