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首页> 美国卫生研究院文献>Taylor Francis Open Select >Removal of steroid estrogens from municipal wastewater in a pilot scale expanded granular sludge blanket reactor and anaerobic membrane bioreactor
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Removal of steroid estrogens from municipal wastewater in a pilot scale expanded granular sludge blanket reactor and anaerobic membrane bioreactor

机译：在中试规模的膨胀式污泥毯式反应器和厌氧膜生物反应器中去除城市废水中的甾体雌激素

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Anaerobic treatment of municipal wastewater offers the prospect of a new paradigm by reducing aeration costs and minimizing sludge production. It has been successfully applied in warm climates, but does not always achieve the desired outcomes in temperate climates at the biochemical oxygen demand (BOD) values of municipal crude wastewater. Recently the concept of ‘fortification' has been proposed to increase organic strength and has been demonstrated at the laboratory and pilot scale treating municipal wastewater at temperatures of 10–17°C. The process treats a proportion of the flow anaerobically by combining it with primary sludge from the residual flow and then polishing it to a high effluent standard aerobically. Energy consumption is reduced as is sludge production. However, no new treatment process is viable if it only addresses the problems of traditional pollutants (suspended solids – SS, BOD, nitrogen – N and phosphorus – P); it must also treat hazardous substances. This study compared three potential municipal anaerobic treatment regimes, crude wastewater in an expanded granular sludge blanket (EGSB) reactor, fortified crude wastewater in an EGSB and crude wastewater in an anaerobic membrane bioreactor. The benefits of fortification were demonstrated for the removal of SS, BOD, N and P. These three systems were further challenged with the removal of steroid estrogens at environmental concentrations from natural indigenous sources. All three systems removed these compounds to a significant degree, confirming that estrogen removal is not restricted to highly aerobic autotrophs, or aerobic heterotrophs, but is also a faculty of anaerobic bacteria.
机译：市政废水的厌氧处理通过降低曝气成本和最大程度地减少污泥生产，提供了一种新的范例。它已成功应用于温暖的气候，但在温和气候中，市政市政污水的生化需氧量（BOD）值并不总是能达到预期的结果。最近，有人提出了“强化”的概念来提高有机强度，并已在实验室和中试规模的温度为10–17°C的城市污水处理中得到证明。该工艺通过与剩余污泥中的一次污泥混合，然后厌氧处理一部分污泥，然后将其好氧地精炼成高废水标准。减少了能源消耗，减少了污泥的产生。但是，如果仅解决传统污染物（悬浮固体– SS，BOD，氮– N和磷– P）的问题，则没有新的处理方法可行。它还必须处理有害物质。这项研究比较了三种潜在的市政厌氧处理方案，膨胀颗粒污泥床（EGSB）反应器中的粗废水，EGSB中的强化粗废水和厌氧膜生物反应器中的粗废水。已证明了强化对去除SS，BOD，N和P的好处。这三种系统都面临着从天然天然来源中去除环境浓度的类固醇雌激素的挑战。这三个系统都在很大程度上去除了这些化合物，这证明去除雌激素不仅限于高需氧自养生物或需氧异养生物，而且还是厌氧细菌的产物。

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