Achieving efficient autotrophic nitrogen removal in anaerobic membrane bioreactor plus membrane aerated biofilm reactor by regulating nutrient ratios

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology Pub Date : 2024-11-15 DOI:10.1016/j.biortech.2024.131832

Yu-Lin Han, Ling-Dong Shi, He-Ping Zhao

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引用次数: 0

Abstract

It is feasible to integrate an anaerobic membrane bioreactor with a membrane aerated biofilm reactor to efficiently implement the sulfate reduction, simultaneous nitrification and autotrophic denitrification process. However, the effect of parameters on nutrient removal and environmental impacts of the process are unclear. In this study, the reactor performance was mainly influenced by the chemical oxygen demand to sulfate (COD/S) ratio and the ammonium to sulfate (N/S) ratio in long-term operation. Significant models were developed to optimize the two factors using the response surface methodology. Under optimal conditions (COD/S ratio of 2.5 and N/S ratio of 0.3), the system could remove above 86 % COD, 99 % ammonium, and 92 % total inorganic nitrogen. Moreover, this process could reduce energy consumption by 30 % and global warming potential by 50 % compared with traditional anaerobic/oxic activated sludge process. These findings provide guidance for the application of this technology in sulfate-containing municipal sewage treatment.

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在厌氧膜生物反应器加膜充气生物膜反应器中通过调节营养物比例实现高效自养脱氮。

将厌氧膜生物反应器与膜充气生物膜反应器结合起来，有效地实现硫酸盐还原、同步硝化和自养反硝化过程是可行的。然而，该工艺参数对营养物去除和环境影响的影响尚不明确。在本研究中，反应器在长期运行过程中的性能主要受化学需氧量与硫酸盐（COD/S）比率和氨氮与硫酸盐（N/S）比率的影响。利用响应面方法建立了重要的模型来优化这两个因素。在最佳条件下（COD/S 比为 2.5，N/S 比为 0.3），该系统可去除 86% 以上的 COD、99% 的铵和 92% 的总无机氮。此外，与传统的厌氧/缺氧活性污泥法相比，该工艺可减少 30% 的能耗和 50% 的全球变暖潜势。这些研究结果为该技术在含硫酸盐城市污水处理中的应用提供了指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.