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首页> 外文期刊>Water Practice and Technology >Increased nitrogen removal in existing volumes at Sundet wastewater treatment plant, Växjö
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Increased nitrogen removal in existing volumes at Sundet wastewater treatment plant, Växjö

机译：Växjö日落废水处理厂现有设备中的氮去除量增加

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Many wastewater treatment plants need to improve their nitrogen removal due to stricter requirements and increasing loads. This often means larger bioreactor volumes, which can be very expensive and is sometimes impossible if space is limited. Therefore, there is a need for compact hybrid solutions that can increase capacity within existing volumes. Two full-scale demonstration projects using moving bed biofilm reactor (MBBR) technology has proven to be an efficient way to treat nitrogen in existing volumes at Sundet wastewater treatment plant in Växjö. Increased nitrification and denitrification capacity in parts of the main stream were demonstrated through the Hybas™ process, a combination of MBBR and activated sludge using the integrated fixed-film activated sludge technology. The ANITA™ Mox process, using autotrophic N-removal through anaerobic ammonium oxidation (anammox), provided high nitrogen removal for the sludge liquor. Data collected on-site for over a year are analyzed and compared with the performance of conventional treatment systems. These two full-scale demonstration projects have been a successful learning experience in identifying and correcting both process and operational issues, which may not have arisen at pilot scale. The set objectives in terms of nitrogen removal were met for both processes and design modifications have been identified that will improve future operation at Sundet WWTP.
机译：由于更严格的要求和增加的负荷，许多废水处理厂需要提高脱氮率。这通常意味着更大的生物反应器体积，这可能非常昂贵，并且如果空间有限，有时是不可能的。因此，需要可以在现有体积内增加容量的紧凑型混合解决方案。已证明使用移动床生物膜反应器（MBBR）技术的两个大规模示范项目是在韦克舍Sundet废水处理厂处理现有量氮的有效方法。通过Hybas™工艺（结合了MBBR和活性污泥的结合，采用集成的固定膜活性污泥技术）证明了主流部分硝化和反硝化能力的提高。 ANITA™Mox工艺使用通过厌氧铵氧化（anammox）进行自养氮去除，为污泥液提供了高氮去除率。对现场收集的一年以上的数据进行分析，并将其与常规处理系统的性能进行比较。这两个全面的示范项目在识别和纠正过程和操作问题方面都是成功的学习经验，而这在试点规模可能不会出现。工艺均达到了脱氮方面的既定目标，并且确定了设计改进方案，可以改善Sundet污水处理厂的未来运行。

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