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Treatability of emerging contaminants in wastewater treatment plants during wet weather flows.

机译：在潮湿天气期间，废水处理厂中新兴污染物的可处理性。

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摘要

Municipal wastewater treatment plants have traditionally been designed to treat conventional pollutants found in sanitary wastewaters. However, many synthetic pollutants, such as pharmaceuticals and personal care products (PPCPs), also enter the wastewater stream. Some of these nontraditional contaminants are not efficiently removed by the treatment process at the wastewater treatment plant. Emerging contaminants (ECs) have been identified in surface waters receiving wastewater effluents and have been found to potentially cause adverse effects on aquatic wildlife. These materials are produced by industry in very large quantities and are disposed of in toilets and in industrial effluent where partial treatment occurs before their discharge. Some of the pharmaceuticals excreted from the human user's body are metabolized and are more toxic and untreatable than their parent compound. Emerging contaminants have been referred to by EPA as "contaminants of emerging concern (CECs) because the risk to human health and the environment associated with their presence, frequency of occurrence, or source may not be known.".;In this EPA funded research, pharmaceuticals, PAHs and pesticides at the treatment plants were examined. The study focuses on the effects of stormwater infiltration, the inflow into sanitary systems and the amounts and treatability of targeted pharmaceuticals. Stormwater is a known source of many contaminants and could mix with wastewater through stormwater infiltration and inflow (I & I). Several dry and wet weather series of samples were obtained from the city of Tuscaloosa's wastewater treatment plant. Samples were examined from four locations within the treatment plant in order to determine if there are significant differences between influent quantities and removal characteristics during periods of increased flows associated with wet weather compared to normal flow periods. The data generally show treatability appears to remain similar during both wet and dry weather conditions under a wide range of flow conditions. Changes in hydraulic retention times and hourly flow variations were also observed to determine treatment plant performance.;Emphasis was placed on the following pesticides: aldrin, chlordane, dieldrin, endrin, gamma-BHC, heptachlor, heptachlor epoxide, hexachlorobenzene, hexachlorocyclopentadiene, methoxychlor, and toxaphene. As expected, not all compounds were quantified in the samples, with many being below the detection limits.
机译：传统上，市政废水处理厂设计为处理卫生废水中发现的常规污染物。但是，许多合成污染物，例如药品和个人护理产品（PPCP），也进入废水流。在废水处理厂的处理过程中，其中一些非传统污染物无法有效去除。在接收废水的地表水中已经发现了新兴污染物（EC），并发现它们可能对水生野生生物造成不利影响。这些材料是由工业大量生产的，并被丢弃在厕所和工业废水中，在排放之前，这些废水已经过部分处理。从人体排出的某些药物比它们的母体化合物代谢新，毒性更大，无法治愈。 EPA将新兴污染物称为“新兴关注污染物（CEC），因为可能不知道与它们的存在，发生频率或来源有关的对人类健康和环境的风险。”；在此EPA资助的研究中在处理厂检查了药品，多环芳烃和农药。该研究的重点是雨水渗透，卫生系统的流入以及目标药物的数量和可治疗性的影响。雨水是许多污染物的已知来源，并可能通过雨水的渗透和流入（I＆I）与废水混合。从塔斯卡卢萨市的废水处理厂获得了几个干燥和潮湿天气系列的样品。从处理厂的四个位置检查了样本，以确定与正常天气相比，与潮湿天气相关的流量增加期间，进水量和去除特性之间是否存在显着差异。数据通常显示，在宽范围的流动条件下，潮湿和干燥天气条件下的可处理性似乎都保持相似。还观察到水力停留时间的变化和每小时流量的变化来确定污水处理厂的性能。重点放在以下农药上：艾氏剂，氯丹，狄氏剂，异狄氏剂，γ-BHC，七氯，七氯环氧化物，六氯苯，六氯环戊二烯，甲氧基氯，和毒杀芬。不出所料，样品中并非所有化合物都被定量，其中许多都低于检测限。

著录项

  • 作者

    Goodson, Kenya L.;

  • 作者单位

    The University of Alabama.;

  • 授予单位 The University of Alabama.;
  • 学科 Engineering Civil.;Engineering Environmental.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 267 p.
  • 总页数 267
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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