Bio-enhanced Granular-Activated Carbon Dynamic Biofilm Reactor for Greywater Treatment: Biofilm Growth, Performance and Mechanisms

Bio-enhanced Granular-Activated Carbon Dynamic Biofilm Reactor for Greywater Treatment: Biofilm Growth, Performance and Mechanisms | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Bio-enhanced Granular-Activated Carbon Dynamic Biofilm Reactor for Greywater Treatment: Biofilm Growth, Performance and Mechanisms Yun Zhou, Ziqi Wang, Ying Yang, Wanchen Xiang, Beibei Wu, Xiaocai Cui This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-1805562/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 12 Oct, 2022 Read the published version in npj Clean Water → Version 1 posted 11 You are reading this latest preprint version Abstract The potential of source-diverted greywater (GW) reuse mainly rely on the efficiency and cost of GW treatment technology. Oxygen (O2) supply and utilization rate directly determines the energy consumption and pollutants removal rate in the biological GW treatment. This study developed an effective, gravity flow self-supplying O2 and easy-to-maintain bio-enhanced granular-activated carbon dynamic biofilm reactor (BhGAC-DBfR) for on-site GW treatment. Results showed that increasing of saturated/unsaturated ratio led to the continuous growth of biomass on GAC surface. Division of saturated and unsaturated zones favors the formation of aerobic-anoxic-anaerobic biofilm in the reactor. A saturated/unsaturated ratio of 1:1.1 achieved the maximum removal rate of chemical oxygen demand (COD), linear alkylbenzene sulfonates (LAS), ammonia nitrogen and total nitrogen at 98.3, 99.4, 99.8 and 83.5%, respectively. Key is that adsorption and biodegradation play important and distinct roles in the quick uptake and continuous removal of both organics and N in the system. The related genus and enzymes functional for LAS mineralization, deamination of organic N, ammonium oxidation, and nitrate respiration enabled the efficient and simultaneous removal of organics and N in the BhGAC-DBfR. This study offers a promising engineering alternative technology with great potential to achieve efficient and low-energy-input GW treatment. Full Text Additional Declarations (Not answered) Supplementary Files Highlights.pdf NoveltyStatement.pdf SupplementaryInformation.pdf TOCArt.pdf Cite Share Download PDF Status: Published Journal Publication published 12 Oct, 2022 Read the published version in npj Clean Water → Version 1 posted Editorial decision: revise 21 Jul, 2022 Review # 1 received at journal 20 Jul, 2022 Review # 3 received at journal 14 Jul, 2022 Review # 2 received at journal 14 Jul, 2022 Reviewer # 3 agreed at journal 11 Jul, 2022 Reviewer # 2 agreed at journal 11 Jul, 2022 Reviewer # 1 agreed at journal 11 Jul, 2022 Reviewers invited by journal 11 Jul, 2022 Submission checks completed at journal 29 Jun, 2022 First submitted to journal 28 Jun, 2022 Editor assigned by journal 28 Jun, 2022 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-1805562","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":120229393,"identity":"f422ea22-7a99-4e31-99d5-bc7095909ee5","order_by":0,"name":"Yun 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