{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T01:52:50Z","timestamp":1790387570202,"version":"4.1.0"},"reference-count":24,"publisher":"IWA Publishing","issue":"5","content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2018,3,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>In simultaneous precipitation, interaction between chemical and biological P removal could not be ignored. This work investigated effects of ferrous sulfate and Fe precipitates on metabolic behavior of bio-P and its counter cation of potassium. After dosing, mixed liquid suspended solids (MLSS) increased 9%, pH decreased from 7.35 to 7.00, sludge volume index (SVI) decreased, electrical conductivity increased. Chemical oxygen demand (COD) and NH3 removal was not affected. Fe dosing initially showed synergistic effect, and then inhibition appeared at accumulative dose above 10 mgFe\/gMLSS. Both precipitate FePO4 and Fe(OH)3 deteriorated effluent P. FePO4 dissolved 35% in anaerobic phase which failed to be totally reprecipitated in oxic phase, resulting in increased effluent P. FePO4 inhibited K uptake rather than bio-P uptake. Fe(OH)3 caused reduction of bio-P release, meanwhile, its inhibition on K and bio-P uptake was greater than FePO4. Phosphorus metabolism was inhibited when sludge contained 0.15 mM FePO4 or 0.10 mM Fe(OH)3. Increased K\/P molar ratio and coefficient b could be indicators for Fe residual in sludge. Intermittent dosing was suggested for wastewater treatment plant (WWTP) operation.<\/jats:p>","DOI":"10.2166\/wst.2017.644","type":"journal-article","created":{"date-parts":[[2017,12,31]],"date-time":"2017-12-31T01:10:32Z","timestamp":1514682632000},"page":"1222-1229","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":11,"title":["Chemical stress from Fe salts dosing on biological phosphorus and potassium behavior"],"prefix":"10.2166","volume":"77","author":[{"given":"Jie","family":"Fan","sequence":"first","affiliation":[{"name":"College of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hang","family":"Zhang","sequence":"first","affiliation":[{"name":"College of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiasong","family":"Ye","sequence":"first","affiliation":[{"name":"College of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bin","family":"Ji","sequence":"first","affiliation":[{"name":"College of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"945","published-online":{"date-parts":[[2017,12,30]]},"reference":[{"key":"2020032813391049500_WST-EM171228C1a","volume-title":"Standard Methods for the Examination of Water and Wastewater","author":"APHA","year":"2005"},{"key":"2020032813391049500_WST-EM171228C1","doi-asserted-by":"crossref","first-page":"2981","DOI":"10.1007\/s11274-008-9841-0","article-title":"Effect of ferrous sulfate on nitrification during simultaneous phosphorus removal from domestic wastewater using a 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Doctoral Thesis, Harbin Institute of Technology, Harbin, China."},{"key":"2020032813391049500_WST-EM171228C10","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1016\/j.cis.2009.08.003","article-title":"Compilation of PZC and IEP of sparingly soluble metal oxides and hydroxides from literature","volume":"152","year":"2009","journal-title":"Advances in Colloid and Interface Science"},{"key":"2020032813391049500_WST-EM171228C11","doi-asserted-by":"crossref","first-page":"4008","DOI":"10.1016\/j.biortech.2010.11.107","article-title":"Inhibition of chemical dose in biological phosphorus and nitrogen removal in simultaneous chemical precipitation for phosphorus removal","volume":"102","year":"2011","journal-title":"Bioresource Technology"},{"key":"2020032813391049500_WST-EM171228C12","doi-asserted-by":"crossref","first-page":"2431","DOI":"10.1016\/j.watres.2009.03.003","article-title":"Experimental assessment and modeling of the proton production linked to phosphorus release and uptake in EBPR systems","volume":"43","year":"2009","journal-title":"Water Research"},{"key":"2020032813391049500_WST-EM171228C13","doi-asserted-by":"crossref","first-page":"2271","DOI":"10.1016\/j.watres.2007.02.030","article-title":"Advances in enhanced biological phosphorus removal: from micro to macro scale","volume":"41","year":"2007","journal-title":"Water Research"},{"key":"2020032813391049500_WST-EM171228C14","doi-asserted-by":"crossref","first-page":"1067","DOI":"10.1002\/jctb.2399","article-title":"Mode of action of ferric and ferrous iron salts in activated sludge","volume":"85","year":"2010","journal-title":"Journal of Chemical Technology and Biotechnology"},{"key":"2020032813391049500_WST-EM171228C15","doi-asserted-by":"crossref","first-page":"3190","DOI":"10.1016\/S0043-1354(01)00025-2","article-title":"Stability of enhanced biological phosphorus removal and composition of polyphosphate granules","volume":"35","year":"2001","journal-title":"Water Research"},{"key":"2020032813391049500_WST-EM171228C16","doi-asserted-by":"crossref","first-page":"269","DOI":"10.2478\/eces-2014-0021","article-title":"Destabilization of model wastewater in the chemical coagulation process","volume":"21","year":"2014","journal-title":"Ecological Chemical Engineering S"},{"issue":"4\u20135","key":"2020032813391049500_WST-EM171228C17","first-page":"249","article-title":"Enhancing biological phosphorus removal from municipal wastewater with partial simultaneous precipitation","volume":"46","year":"2002","journal-title":"Water Science and Technology"},{"key":"2020032813391049500_WST-EM171228C18","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1016\/j.biortech.2015.03.132","article-title":"A modified BAF system configuring synergistic denitrification and chemical phosphorus precipitation: examination on pollutants removal and clogging development","volume":"189","year":"2015","journal-title":"Bioresource Technology"},{"key":"2020032813391049500_WST-EM171228C19","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1016\/j.watres.2015.02.020","article-title":"Iron and phosphorus speciation in Fe-conditioned membrane bioreactor activated sludge","volume":"76","year":"2015","journal-title":"Water Research"},{"key":"2020032813391049500_WST-EM171228C20","doi-asserted-by":"crossref","first-page":"801","DOI":"10.1016\/j.seppur.2013.08.034","article-title":"Effect of Fe(II)\/P ratio and pH on phosphorus removal by ferrous salt and approach to mechanisms","volume":"118","year":"2013","journal-title":"Separation and Purification Technology"},{"key":"2020032813391049500_WST-EM171228C21","doi-asserted-by":"crossref","first-page":"124","DOI":"10.1016\/j.colsurfa.2014.11.027","article-title":"Dynamic variation in physicochemical properties of activated sludge floc from different WWTPs and its influence on sludge dewaterability and settleability","volume":"467","year":"2015","journal-title":"Colloids and Surfaces A: Physicochem. 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