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Priority and emerging pollutants in sewage sludge and fate during sludge treatment

机译：污泥处理过程中污水污泥和命运中的优先和新兴污染物

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摘要

This paper aims at characterizing the quality of different treated sludges from Paris conurbation in terms of micropollutants and assessing their fate during different sludge treatment processes (STP). To achieve this, a large panel of priority and emerging pollutants (n = 117) have been monitored in different STPs from Parisian wastewater treatment plants including anaerobic digestion, thermal drying, centrifugation and a sludge cake production unit. Considering the quality of treated sludges, comparable micropollutant patterns are found for the different sludges investigated (in mg/kg DM - dry matter). 35 compounds were detected in treated sludges. Some compounds (metals, organotins, alkylphenols, DEHP) are found in every kinds of sludge while pesticides or VOCs are never detected. Sludge cake is the most contaminated sludge, resulting from concentration phenomenon during different treatments. As regards treatments, both centrifugation and thermal drying have broadly no important impact on sludge contamination for metals and organic compounds, even if a slight removal seems to be possible with thermal drying for several compounds by abiotic transfers. Three different behaviors can be highlighted in anaerobic digestion: (ⅰ) no removal (metals), (ⅱ) removal following dry matter (DM) elimination (organotins and NP) and ⅲ) removal higher than DM (alkylphenols - except NP - BDE 209 and DEHP). Thus, this process allows a clear removal of biodegradable micropollutants which could be potentially significantly improved by increasing DM removal through operational parameters modifications (retention time, temperature, pre-treatment, etc.).
机译：本文旨在通过微量污染物表征巴黎市区不同处理污泥的质量，并评估其在不同污泥处理过程（STP）中的命运。为此，在巴黎污水处理厂的不同污水处理厂中，对大量优先排放的污染物（n = 117）进行了监测，包括厌氧消化，热干燥，离心分离和污泥饼生产装置。考虑到处理后的污泥的质量，可以发现所研究的不同污泥具有可比的微污染物模式（以mg / kg DM-干物质计）。在处理过的污泥中检测到35种化合物。在每种污泥中都发现了某些化合物（金属，有机锡，烷基酚，DEHP），而从未检测到农药或VOC。污泥饼是污染最严重的污泥，是由于不同处理过程中的浓缩现象所致。在处理方面，离心和热干燥对污泥对金属和有机化合物的污染均没有重要影响，即使通过非生物转移对几种化合物进行热干燥似乎可以将其轻微除去。厌氧消化中可以强调三种不同的行为：（ⅰ）没有去除（金属），（ⅱ）干物质（DM）去除（有机锡和NP）后的去除和ⅲ）去除率高于DM（烷基酚-NP-BDE 209除外）和DEHP）。因此，该方法可以清楚地去除可生物降解的微污染物，通过修改操作参数（保留时间，温度，预处理等）来增加DM的去除量，可以显着改善这种降解能力。

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  • 来源
    《Waste Management》 |2014年第7期|1217-1226|共10页
  • 作者

    R. Mailler; J. Gasperi; G. Chebbo; V. Rocher;

  • 作者单位

    LEESU, UMR MA 102, Universite Paris-Est, Agro Paris Tech, 6-8 avenue Blaise Pascal, Champs-sur-Marne, 77455 Marne-la-Vallee Cedex 2, France;

    LEESU, UMR MA 102, Universite Paris-Est, Agro Paris Tech, 6-8 avenue Blaise Pascal, Champs-sur-Marne, 77455 Marne-la-Vallee Cedex 2, France;

    LEESU, UMR MA 102, Universite Paris-Est, Agro Paris Tech, 6-8 avenue Blaise Pascal, Champs-sur-Marne, 77455 Marne-la-Vallee Cedex 2, France;

    SIAAP, Direction du Developpemem et de la Prospective, 82 avenue Kleber, 92700 Colombes, France;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Anaerobic digestion; Thermal drying; Centrifugation; Emerging pollutant; Priority pollutant; Sludge;

    机译：厌氧消化;热干燥;离心新兴污染物;优先污染物;污泥;

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