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首页> 外文会议>Annual Water Environment Federation technical exhibition and conference >Direct Potable Reuse: NDMA Control Strategies
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Direct Potable Reuse: NDMA Control Strategies

机译：直接饮用重用：NDMA控制策略

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Many nitrosamines are considered toxic carcinogens and key contaminants of emerging concern (CEC) for potable reuse (PR). Several have been included in the US EPA's past few Contaminant Candidate Lists for consideration for federal regulatory action and California maintains 10 ng/L notification levels for N-nitrosodimethylamine (NDMA), N-nitrosodiethylamine (NDEA) and N-nitrosodipropylamine (NDPA). NDMA in particular has been a key focus for potable reuse facilities. It occurs in sewage from industrial and domestic sources. Municipal sewage also features chloramine-and ozone-reactive precursors for NDMA, and both disinfectants have been applied in potable reuse treatment trains. This paper presents evaluation of various NDMA control strategies for an advanced treatment for potable reuse. Development of these control strategies include characterizing nitrosamine precursor sources (including industrial sources), optimizing the removal of nitrosamines and their precursors through secondary nitrification/denitrification (NdeN) treatment, and across Full Advanced Treatment (FAT) consisting of Microfiltration (MF), Reverse Osmosis (RO), Advanced Oxidation Process (AOP) and an alternative treatment trains for potable reuse consisting of above grade treatment consisting of ozone, biological activated carbon (O3/BAC)), AOP, followed by the Soil Aquifer Treatment (SAT). These evaluations include the fate and transport of nitrosamines, NDMA and its precursors and a potential to form during treatment.
机译：许多亚硝胺被认为是有毒的致癌物质，是人们对便携式再利用（PR）引起关注的关键污染物（CEC）。几项已被列入美国环保署的过去几份污染物候选清单中，以考虑采取联邦法规行动，加利福尼亚州将N-亚硝基二甲胺（NDMA），N-亚硝基二乙胺（NDEA）和N-亚硝基二丙胺（NDPA）的通报水平维持在10 ng / L。尤其是NDMA一直是便携式重用设施的重点。它来自工业和家庭污水。市政污水还具有用于NDMA的对氯胺和臭氧具有反应活性的前体，并且两种消毒剂都已用于饮用水回用处理系统。本文介绍了用于可重复使用的高级处理的各种NDMA控制策略的评估。这些控制策略的开发包括表征亚硝胺前体来源（包括工业来源），通过二次硝化/反硝化（NdeN）处理以及在包括微滤（MF），反向渗透（RO），高级氧化工艺（AOP）以及可重复使用的替代处理系列，包括臭氧，生物活性炭（O3 / BAC），AOP和土壤含水层处理（SAT）组成的上等处理。这些评估包括亚硝胺，NDMA及其前体的命运和运输以及在治疗过程中形成的可能性。

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