Performance of a novel annular electric field membrane bioreactor and its membrane fouling control in treating catering wastewater

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere Pub Date : 2024-11-01 DOI:10.1016/j.chemosphere.2024.143756

Rong Zhang , Mengqian Li , Huan Ma , Yanyan Wang , Beiyu Xin , Jifeng Guo

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Abstract

This study aimed to investigate the effects of different voltage and aeration conditions on catering wastewater treatment and membrane fouling in a novel annular electric field membrane bioreactor (AEMBR). The results indicated that the synergistic effect of annular electric field and aeration promoted the degradation of wastewater and the alleviation of membrane fouling. The treatment effect was optimal under a micro electric field of 0.5 V, with removal rates for COD, NH₄⁺-N, TP, and oil ranging from 96.85% to 99.36%, 80.43%–83.01%, 95.46%–97.79%, and 98.83%–99.15%, respectively. Additionally, the fluorescence intensity of macromolecular proteins and small molecular acids decreased. Simultaneously, the average growth rate of transmembrane pressure (TMP) reduced by approximately 0.4 kPa/d. The species abundance and diversity of activated sludge increased, promoting the growth of dominant bacteria, all while maintaining low energy consumption. The aeration intensity had relatively little impact on system operation, and the force of the annular electric field was greater than the force of aeration. This study verified the optimal benefits under micro electric field conditions and provided a basis for the optimization of future process design to achieve a more efficient and economical wastewater treatment system.

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新型环形电场膜生物反应器在处理餐饮废水中的性能及其膜污垢控制。

本研究旨在探讨不同电压和曝气条件对新型环形电场膜生物反应器（AEMBR）中餐饮废水处理和膜结垢的影响。结果表明，环形电场和曝气的协同作用促进了废水的降解和膜污垢的缓解。在 0.5 V 的微电场下，处理效果最佳，对 COD、NH4+-N、TP 和油的去除率分别为 96.85% 至 99.36%、80.43% 至 83.01%、95.46% 至 97.79%、98.83% 至 99.15%。此外，大分子蛋白质和小分子酸的荧光强度也有所下降。同时，跨膜压力（TMP）的平均增长率降低了约 0.4 kPa/d。活性污泥的物种丰度和多样性增加，促进了优势菌的生长，同时保持了较低的能耗。曝气强度对系统运行的影响相对较小，环形电场的作用力大于曝气的作用力。这项研究验证了微电场条件下的最佳效益，为优化未来的工艺设计，实现更高效、更经济的污水处理系统提供了依据。

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

Chemosphere 环境科学-环境科学

CiteScore

15.80

自引率

8.00%

发文量

4975

审稿时长

3.4 months

期刊介绍： Chemosphere, being an international multidisciplinary journal, is dedicated to publishing original communications and review articles on chemicals in the environment. The scope covers a wide range of topics, including the identification, quantification, behavior, fate, toxicology, treatment, and remediation of chemicals in the bio-, hydro-, litho-, and atmosphere, ensuring the broad dissemination of research in this field.