Comparative study of the removal of sulfate by UASB in light and dark environment.

IF 3.5 3区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Bioprocess and Biosystems Engineering Pub Date : 2024-06-01 Epub Date: 2024-05-04 DOI:10.1007/s00449-024-03024-1

Yuanyao Ye, Xueyi Yan, Hui Luo, Jianxiong Kang, Dongqi Liu, Yongzheng Ren, Huu Hao Ngo, Wenshan Guo, Dongle Cheng, Wei Jiang

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Abstract

At present, the application of sewage treatment technologies is restricted by high sulfate concentrations. In the present work, the sulfate removal was biologically treated using an upflow anaerobic sludge blanket (UASB) in the absence/presence of light. First, the start-up of UASB for the sulfate removal was studied in terms of COD degradation, sulfate removal, and effluent pH. Second, the impacts of different operation parameters (i.e., COD/SO₄^2- ratio, temperature and illumination time) on the UASB performance were explored. Third, the properties of sludge derived from the UASB at different time were analyzed. Results show that after 28 days of start-up, the COD removal efficiencies in both the photoreactor and non-photoreactor could reach a range of 85-90% while such reactors could achieve > 90% of sulfate being removed. Besides, higher illumination time could facilitate the removal of pollutants in the photoreactor. To sum up, the present study can provide technical support for the clean removal of sulfate from wastewater using photoreactors.

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UASB 在明暗环境中去除硫酸盐的比较研究。

目前，污水处理技术的应用受到高浓度硫酸盐的限制。在本研究中，利用上流式厌氧污泥毯（UASB）在无光/有光条件下对硫酸盐的去除进行了生物处理。首先，从化学需氧量降解、硫酸盐去除和出水 pH 值方面研究了 UASB 在去除硫酸盐方面的启动情况。其次，探讨了不同运行参数（即 COD/SO42- 比率、温度和光照时间）对 UASB 性能的影响。第三，分析了 UASB 在不同时间产生的污泥性质。结果表明，在启动 28 天后，光反应器和非光反应器的 COD 去除率均可达到 85%-90% 的范围，而此类反应器的硫酸盐去除率可达到 90% 以上。此外，光照时间越长，光反应器中污染物的去除率越高。总之，本研究可为利用光反应器清洁去除废水中的硫酸盐提供技术支持。

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来源期刊

Bioprocess and Biosystems Engineering 工程技术-工程：化工

CiteScore

7.90

自引率

2.60%

发文量

147

审稿时长

2.6 months

期刊介绍： Bioprocess and Biosystems Engineering provides an international peer-reviewed forum to facilitate the discussion between engineering and biological science to find efficient solutions in the development and improvement of bioprocesses. The aim of the journal is to focus more attention on the multidisciplinary approaches for integrative bioprocess design. Of special interest are the rational manipulation of biosystems through metabolic engineering techniques to provide new biocatalysts as well as the model based design of bioprocesses (up-stream processing, bioreactor operation and downstream processing) that will lead to new and sustainable production processes. Contributions are targeted at new approaches for rational and evolutive design of cellular systems by taking into account the environment and constraints of technical production processes, integration of recombinant technology and process design, as well as new hybrid intersections such as bioinformatics and process systems engineering. Manuscripts concerning the design, simulation, experimental validation, control, and economic as well as ecological evaluation of novel processes using biosystems or parts thereof (e.g., enzymes, microorganisms, mammalian cells, plant cells, or tissue), their related products, or technical devices are also encouraged. The Editors will consider papers for publication based on novelty, their impact on biotechnological production and their contribution to the advancement of bioprocess and biosystems engineering science. Submission of papers dealing with routine aspects of bioprocess engineering (e.g., routine application of established methodologies, and description of established equipment) are discouraged.