螺旋对称流厌氧生物反应器对含聚乙烯醇退浆和维纶废水的强化降解：效率和途径分析

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-08 DOI:10.1016/j.jwpe.2025.107861

Qianyi Su, Zikang Yang, Luotong Ren, Xiaoya Gao, Fangyuan Liu, Xiaoguang Chen

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引用次数: 0

摘要

现有的含聚乙烯醇（PVA）退浆和维纶废水处理工艺运行成本高，抗冲击负荷能力低，是阻碍纺织工业绿色发展的问题。本研究评估了实际工程项目中各处理阶段的性能，确定厌氧段的低效率是主要瓶颈。颗粒污泥的吸附效果大于其生物降解能力。螺旋对称流厌氧生物反应器（SSSAB）对含pva的退浆废水和维纶废水进行了有效的降解，其体积负荷率（VLR）为5.96 kg COD/(m3·d)，化学需氧量（COD）去除率高达43.3%。探讨了含pva退浆和维纶废水的厌氧生物降解机理。进水和出水的主要有机物为苯，分别占总有机质的78.2%和88.5%。碳纳米管（CNTs）的加入提高了SSSAB系统处理含pva的退浆和维纶废水的稳定性和体积去除率（VRE），将平均体积去除率从0.72 kg COD/（m3·d）提高到1.77 kg COD/（m3·d）。CNTs还改善了颗粒污泥的zeta电位和细胞外聚合物（EPS）的特性。这些发现提供了新的见解和经验数据，以支持扩大SSSAB处理高浓度含pva的退浆和维纶废水。

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Enhanced degradation of polyvinyl alcohol-containing desizing and vinylon wastewater by spiral symmetrical stream anaerobic bioreactors: Efficiency and pathway analysis

The existing treatment process for polyvinyl alcohol (PVA)-containing desizing and vinylon wastewater is characterized by high operational costs and low shock load resistance, which is a problem hindering the green development of textile industry. This study evaluated the performance of each treatment stage in actual engineering projects, identifying the inefficiency of the anaerobic section as the primary bottleneck. The adsorption effect of the granular sludge was found to dominate over its biodegradation capacity. The Spiral Symmetry Stream Anaerobic Bioreactor (SSSAB) demonstrated effective degradation of PVA-containing desizing and vinylon wastewater, achieving a volumetric loading rate (VLR) of 5.96 kg COD/(m³·d) and a chemical oxygen demand (COD) removal rate of up to 43.3 %. The anaerobic biodegradation mechanism of PVA-containing desizing and vinylon wastewater was elucidated. The main organic matter in the influent and effluent water of the SSSAB consisted of benzene, which accounted for 78.2 % and 88.5 % of the total organic matter, respectively. The addition of carbon nanotubes (CNTs) was shown to enhance the stability and volumetric removal efficiency (VRE) of the SSSAB system in treating PVA-containing desizing and vinylon wastewater, increasing the average volumetric removal rate from 0.72 kg COD/(m³·d) to 1.77 kg COD/(m³·d). CNTs also improved the zeta potential of the granular sludge and the characteristics of extracellular polymeric substances (EPS). These findings provide novel insights and empirical data to support the scaling-up of the SSSAB for treating high-concentration PVA-containing desizing and vinylon wastewater.

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies