不同水力滞留时间和磁铁矿用量对生物fenton sbr性能的影响

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-17 DOI:10.1016/j.jwpe.2025.107936

Tong Shen , Yoshihiko Inagaki , Masahito Komori , Yutaka Sakakibara

{"title":"不同水力滞留时间和磁铁矿用量对生物fenton sbr性能的影响","authors":"Tong Shen , Yoshihiko Inagaki , Masahito Komori , Yutaka Sakakibara","doi":"10.1016/j.jwpe.2025.107936","DOIUrl":null,"url":null,"abstract":"<div><div>In our previous study, a bio-Fenton sequencing batch reactor (SBR) demonstrated enhanced removal of the antibiotic sulfamethoxazole (SMX) through bio-Fenton reactions facilitated by microbially produced H<sub>2</sub>O<sub>2</sub> and magnetite redox cycling. This study examined the performances and dominant microbial species in bio-Fenton SBRs with hydraulic retention times (HRT) of 12 to 0.5 days and magnetite dosages of 0, 1, and 3 g/L. Results show that the bio-Fenton SBR with 1 g/L magnetite (SBR1) enhanced COD and SMX removal, as well as nitrification and denitrification rates, at HRTs of 1–2 days. SMX removal reached 100 % in SBR1, which was 40–50 % higher than in SBRs with 0 or 3 g/L magnetite. Enhanced SMX removal was attributed to the increased microbial H<sub>2</sub>O<sub>2</sub> production observed in sludge flocs and the subsequent ·OHs generation during aerobic periods. Magnetite as the heterogeneous catalyst for bio-Fenton reaction was reduced and oxidized through the identified iron-reducing bacteria (<em>Dechloromonas</em>) and bio-Fenton reaction, respectively. Increased nitrification and denitrification rates were attributed to the enrichment of nitrifiers (<em>Nitrosomonas</em> and <em>Nitrospira</em>) and denitrifying bacteria (<em>Thiobacillus</em>), respectively, with shorter HRT. Further kinetic studies are required for precisely evaluating and optimizing the performance of a bio-Fenton SBR.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"75 ","pages":"Article 107936"},"PeriodicalIF":6.3000,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Performances of bio-Fenton SBRs under different hydraulic retention times and magnetite dosages\",\"authors\":\"Tong Shen , Yoshihiko Inagaki , Masahito Komori , Yutaka Sakakibara\",\"doi\":\"10.1016/j.jwpe.2025.107936\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In our previous study, a bio-Fenton sequencing batch reactor (SBR) demonstrated enhanced removal of the antibiotic sulfamethoxazole (SMX) through bio-Fenton reactions facilitated by microbially produced H<sub>2</sub>O<sub>2</sub> and magnetite redox cycling. This study examined the performances and dominant microbial species in bio-Fenton SBRs with hydraulic retention times (HRT) of 12 to 0.5 days and magnetite dosages of 0, 1, and 3 g/L. Results show that the bio-Fenton SBR with 1 g/L magnetite (SBR1) enhanced COD and SMX removal, as well as nitrification and denitrification rates, at HRTs of 1–2 days. SMX removal reached 100 % in SBR1, which was 40–50 % higher than in SBRs with 0 or 3 g/L magnetite. Enhanced SMX removal was attributed to the increased microbial H<sub>2</sub>O<sub>2</sub> production observed in sludge flocs and the subsequent ·OHs generation during aerobic periods. Magnetite as the heterogeneous catalyst for bio-Fenton reaction was reduced and oxidized through the identified iron-reducing bacteria (<em>Dechloromonas</em>) and bio-Fenton reaction, respectively. Increased nitrification and denitrification rates were attributed to the enrichment of nitrifiers (<em>Nitrosomonas</em> and <em>Nitrospira</em>) and denitrifying bacteria (<em>Thiobacillus</em>), respectively, with shorter HRT. Further kinetic studies are required for precisely evaluating and optimizing the performance of a bio-Fenton SBR.</div></div>\",\"PeriodicalId\":17528,\"journal\":{\"name\":\"Journal of water process engineering\",\"volume\":\"75 \",\"pages\":\"Article 107936\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2025-05-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of water process engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2214714425010086\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of water process engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214714425010086","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

摘要

在我们之前的研究中，生物fenton测序间歇反应器（SBR）通过微生物产生的H2O2和磁铁矿氧化还原循环促进生物fenton反应，增强了抗生素磺胺甲恶唑（SMX）的去除。本研究考察了水力停留时间（HRT）为12 ~ 0.5 d，磁铁矿添加量为0、1和3 g/L时，生物fenton sbr的性能和优势微生物种类。结果表明，添加1 g/L磁铁矿（SBR1）的生物fenton SBR在hrt为1 ~ 2 d时，可提高COD和SMX的去除率，并提高硝化和反硝化速率。SBR1对SMX的去除率达到100%，比添加0或3 g/L磁铁矿的SBR1高出40 - 50%。SMX去除率的提高归因于污泥絮凝体中微生物H2O2产量的增加以及随后在好氧时期产生的·oh。磁铁矿作为生物fenton反应的非均相催化剂，分别通过鉴定的铁还原菌（脱氯单胞菌）和生物fenton反应进行还原和氧化。硝化和反硝化速率的增加分别归因于硝化菌（亚硝化单胞菌和硝化螺旋菌）和反硝化菌（硫杆菌）的富集，HRT较短。为了准确评价和优化生物fenton SBR的性能，需要进一步的动力学研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Performances of bio-Fenton SBRs under different hydraulic retention times and magnetite dosages

In our previous study, a bio-Fenton sequencing batch reactor (SBR) demonstrated enhanced removal of the antibiotic sulfamethoxazole (SMX) through bio-Fenton reactions facilitated by microbially produced H₂O₂ and magnetite redox cycling. This study examined the performances and dominant microbial species in bio-Fenton SBRs with hydraulic retention times (HRT) of 12 to 0.5 days and magnetite dosages of 0, 1, and 3 g/L. Results show that the bio-Fenton SBR with 1 g/L magnetite (SBR1) enhanced COD and SMX removal, as well as nitrification and denitrification rates, at HRTs of 1–2 days. SMX removal reached 100 % in SBR1, which was 40–50 % higher than in SBRs with 0 or 3 g/L magnetite. Enhanced SMX removal was attributed to the increased microbial H₂O₂ production observed in sludge flocs and the subsequent ·OHs generation during aerobic periods. Magnetite as the heterogeneous catalyst for bio-Fenton reaction was reduced and oxidized through the identified iron-reducing bacteria (Dechloromonas) and bio-Fenton reaction, respectively. Increased nitrification and denitrification rates were attributed to the enrichment of nitrifiers (Nitrosomonas and Nitrospira) and denitrifying bacteria (Thiobacillus), respectively, with shorter HRT. Further kinetic studies are required for precisely evaluating and optimizing the performance of a bio-Fenton SBR.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

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