An evaluation of membrane aerated biofilm reactor technology in anabling shortcut nitrogen removal

碳、氮和磷是污染湖泊、饮用水水井、溪流和湿地的主要应激源。大多数压力源来自人类活动，以及市政和家庭污水系统。因此，废水处理厂(WWTP)在排放到水体之前必须去除碳和营养物质。通常，污水处理厂采用传统的活性污泥法处理生活污水。这一过程涉及使用微生物去除有机物和营养物质，并需要添加氧气才能完成。这一过程消耗了大量来自化石燃料的电能来推动转换。在生活污水中的有机和含氮物质的各种生物转化过程中，该过程还会产生大量的污泥和温室气体，如二氧化碳和一氧化二氮气体。本项目的目标是开发膜反应器、生物膜反应器实现的短程脱氮工艺。这项技术利用气体传输膜，通过扩散将氧气选择性地转移到生物过程中。该技术已被开发用于废水处理。早期的技术开发侧重于通过传统的硝化-反硝化工艺去除总氮。这项建议评估了一种新的工艺，该工艺利用该技术能够以显著更高的强度和更低的能量投入来实现脱氮/该研究整合了创新的工艺和技术以及一个模拟平台。这项研究的结果将有助于废水清洁技术的开发。

Carbon, nitrogen and phosphorus are the primary stressors that pollute lakes, drinking water wells, streams and wetlands. Most stressors come from human activities and through municipal and home sewage systems. Thus, wastewater treatment plants (WWTPs) are required to remove carbon and nutrients prior to their discharge to water bodies. Typically, WWTPs employ conventional activated sludge process for the treatment of domestic wastewater. This process involves using microorganisms for removing organic matter and nutrients and requires addition of oxygen to get it done. The process consumes a substantial amount of electrical energy from fossil fuels to drive the conversion. The process also generates a great amount of sludge and greenhouse gases, such as carbon dioxide and nitrous oxide gases during various biological conversions of organic and nitrogenous matters present in domestic wastewater. The goal of this project is to develop membrane reactor biofilm reactor enabled shortcut nitrogen removal process. The technology makes use of gas transfer membrane to selectively transfer oxygen to the biological process by diffusion. The technology has been developed for wastewater application. Early technology development focused for total nitrogen removal through conventional nitrification-denitrification processes. This proposal evaluates a new process that makes the use of the technology to enable nitrogen removal at significantly higher intensity and lower energy input/ The research integrates innovative processes and technologies and a simulation platform. Results from this research will contribute towards clean technology development for wastewater.