Abstract:
The anammox-based process has been considered a promising biological nitrogen elimination method for the treatment of nitrogen-rich wastewater ever since its discovery 40 years ago. However, the slow growth rate of anammox bacteria and severe sludge washout result in a long startup period and limit its widespread industrial application. A membrane bioreactor (MBR) is considered an ideal reactor for the operation of the anammox-based process because the membranes allow for 100 % biomass retention. According to a systematic review of the literature, anammox-based MBR is becoming a research hotspot in the field of nitrogen wastewater treatment. The fundamental understanding of anammox-based MBR and its membrane fouling situation is essential for the development and application of anammox-based MBR. In this paper, the application of MBR in different kinds of anammox process are reviewed. The membrane fouling mechanism and strategies to control membrane fouling are also proposed. It is expected that this review will serve as an invaluable guide for future research and in the engineering applications of anammox-based MBR process.
摘要:
自40年前发现以来,基于厌氧氨氧化的工艺一直被认为是一种有前途的生物除氮方法,用于处理富氮废水。然而,厌氧氨氧化菌生长速度缓慢,污泥冲洗严重,导致启动时间长,限制了其广泛的工业应用。膜生物反应器(MBR)被认为是用于基于厌氧氨氧化的方法的操作的理想反应器,因为膜允许100%的生物质保留。根据文献的系统回顾,基于厌氧氨氧化的MBR正在成为氮废水处理领域的研究热点。对基于厌氧氨氧化的MBR及其膜污染状况的基本了解对于基于厌氧氨氧化的MBR的开发和应用至关重要。在本文中,综述了MBR在各种厌氧氨氧化工艺中的应用。还提出了膜污染机理和控制膜污染的策略。预计本次审查将作为未来研究和基于厌氧氨氧化的MBR工艺的工程应用的宝贵指南。