载体耦合膜曝气生物膜反应器中部分硝化和厌氧氨氧化实现主流脱氮

IF 11.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2024-12-17 DOI:10.1016/j.watres.2024.123000

Lisheng Wang , Congcong Zhang , Yanchen Liu , Yong Qiu , Deqing Wanyan , Jiayin Liu , Gang Cheng , Pengfei Lin , Xia Huang

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引用次数: 0

摘要

部分硝化厌氧氨氧化（PN/A）与膜曝气生物膜反应器（MABR）相结合是一种极具发展前景的高效节能脱氮技术。对亚硝酸盐氧化菌（NOB）的抑制仍是其发展面临的最大挑战。在本研究中，我们提出了一种新的载体与MABR （CMABR）相结合的工艺，该工艺将富含厌氧氨氧化菌（AnAOB）的载体与部分硝化MABR系统相结合。研究了不同水力停留时间（HRT）对CMABR的影响，结果表明，在HRT为3 h时，CMABR的氮去除率可达200 g-N/（m3·d）以上，当剩余NH4+-N浓度低于5 mg-N/L时，NOB活性有所提高。最后，优化后的条件下，两级cmabr以30%的载体填充率和6 h的总HRT运行，可获得较高的氮去除率和成功的PN/A，与其他MABR的PN/A工艺相比，NH4+-N去除率达到97%，总氮去除率达到81%。CMABR的特殊优势在于，大量的氨氧化菌（AnAOB）附着在载体上，而不是仅仅附着在膜生物膜上，有利于维持氨氧化菌（氨氧化菌）的活性，提高氨氧化菌的去除率和出水水质。这项研究为未来MABR应用中PN/A工艺的设计和操作提供了创造性和重要的视角。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Achieving mainstream nitrogen removal by partial nitrification and anammox in the carriers-coupled membrane aerated biofilm reactor

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Achieving mainstream nitrogen removal by partial nitrification and anammox in the carriers-coupled membrane aerated biofilm reactor

The integration of partial nitrification-anammox (PN/A) into membrane-aerated biofilm reactor (MABR) is a promisingly energy-efficient and high-efficiency technology for nitrogen removal. The inhibition of nitrite oxidizing bacteria (NOB) remains as the most significant challenge for its development. In our investigation, we proposed a novel process to integrate carriers to MABR (CMABR), which combined the carriers enriched with anaerobic ammonium-oxidizing bacteria (AnAOB) and partial nitrifying MABR system. The effect of different hydraulic retention time (HRT) was explored in CMABR and it showed that the nitrogen removal rate of CMABR could reach more than 200 g-N/(m³·d) at an HRT of 3 h The increase of NOB activity was witnessed when the residual NH₄⁺-N concentration was lower than 5 mg-N/L. Finally, the higher nitrogen removal rate and successful PN/A can be achieved by optimized condition through the operation of two-stage CMABRs with 30 % of carriers filling ratio and a total HRT of 6 h Superior NH₄⁺-N removal efficiency (97 %) and total nitrogen removal efficiency (81 %) were reached compared with other MABR for PN/A processes. The CMABR exerted the special advantage that significant AnAOB attached on the carriers, rather than only on the membrane biofilm, thus it was beneficial to maintain the activity of ammonia oxidizing bacteria (AOB) and improve the nitrogen removal rate and effluent quality. This investigation provides creative and significant perspectives for the design and operation of PN/A processes in the future MABR applications.

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.