Phosphorus removal from synthetic and municipal wastewater using spent alum sludge

Georgantas, DA; Grigoropoulou, HP

dc.contributor.author	Georgantas, DA	en
dc.contributor.author	Grigoropoulou, HP	en
dc.date.accessioned	2014-03-01T01:22:55Z
dc.date.available	2014-03-01T01:22:55Z
dc.date.issued	2005	en
dc.identifier.issn	0273-1223	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16725
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-31844446479&partnerID=40&md5=d16346bdd27968b1e078ec811d228aa9	en
dc.subject	Phosphorus removal	en
dc.subject	Spent alum sludge	en
dc.subject	Wastewater treatment	en
dc.subject	Water treatment	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Water Resources	en
dc.subject.other	Adsorption	en
dc.subject.other	Aluminum compounds	en
dc.subject.other	Chemical oxygen demand	en
dc.subject.other	Chemicals removal (water treatment)	en
dc.subject.other	Hydrated lime	en
dc.subject.other	Iron compounds	en
dc.subject.other	pH	en
dc.subject.other	Phosphorus	en
dc.subject.other	Water treatment plants	en
dc.subject.other	Iron chloride	en
dc.subject.other	Iron sulfate	en
dc.subject.other	Municipal wastewater	en
dc.subject.other	Spent alum sludge	en
dc.subject.other	Synthetic wastewater	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	aluminum	en
dc.subject.other	ammonium chloride	en
dc.subject.other	calcium hydroxide	en
dc.subject.other	ferrous chloride	en
dc.subject.other	ferrous sulfate	en
dc.subject.other	phosphate	en
dc.subject.other	phosphorus	en
dc.subject.other	potassium dihydrogen phosphate	en
dc.subject.other	Adsorption	en
dc.subject.other	Aluminum compounds	en
dc.subject.other	Chemical oxygen demand	en
dc.subject.other	Chemicals removal (water treatment)	en
dc.subject.other	Hydrated lime	en
dc.subject.other	Iron compounds	en
dc.subject.other	pH	en
dc.subject.other	Phosphorus	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	Water treatment plants	en
dc.subject.other	pollutant removal	en
dc.subject.other	wastewater	en
dc.subject.other	adsorption	en
dc.subject.other	article	en
dc.subject.other	chemical oxygen demand	en
dc.subject.other	controlled study	en
dc.subject.other	municipal solid waste	en
dc.subject.other	pH	en
dc.subject.other	sludge treatment	en
dc.subject.other	turbidity	en
dc.subject.other	waste component removal	en
dc.subject.other	waste water treatment plant	en
dc.subject.other	water supply	en
dc.subject.other	Alum Compounds	en
dc.subject.other	Calcium Hydroxide	en
dc.subject.other	Cities	en
dc.subject.other	Ferric Compounds	en
dc.subject.other	Nephelometry and Turbidimetry	en
dc.subject.other	Oxygen	en
dc.subject.other	Phosphates	en
dc.subject.other	Phosphorus	en
dc.subject.other	Sewage	en
dc.subject.other	Waste Disposal, Fluid	en
dc.subject.other	Water Purification	en
dc.title	Phosphorus removal from synthetic and municipal wastewater using spent alum sludge	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	In the present study, phosphorus removal was studied using as coagulant spent alum sludge from a water treatment plant of EYDAP (Athens Water Supply and Sewerage Company) and compared to alum (Al-2(SO4)(3)center dot 18H(2)O), iron chloride (FeCl(3)center dot 7H(2)O), iron sulfate (Fe-2(SO4)10H(2)O) and calcium hydroxide (Ca(OH)(2)) at a constant pH (equal to 6).The comparison was based on their efficiency to remove phosphorus in synthetic wastewater consisting of 10 mg/L P as potassium dihydrogen phosphate and 50 mg/L N as ammonium chloride. The experiments were carried out using a jar-test apparatus and the measurements were performed according to the Standard Methods for the Examination of Water and Wastewater. Pure alum, iron chloride and iron sulfate were much more efficient in phosphorus removal than the spent alum sludge but in the case of calcium hydroxide, phosphorus removal was very low in pH = 6. Specifically, orthophosphate were totally removed by alum using 15 mg/L as Al, by alum sludge using 75 mg/L as Al and by FeCl(3)center dot 7H(2)O or Fe-2(SO4)center dot 10H(2)O using 30 mg/L of Fe while in the case of calcium hydroxide P removal was actually zero. pH measurements showed that the uptake of phosphates is associated to the release of OH ions in the solution and that the end of P uptake is accompanied by the stabilization of pH. Finally this spent alum sludge was tested on municipal wastewater and proved to be effective as apart from phosphorus it was shown to remove turbidity and COD.	en
heal.publisher	I W A PUBLISHING	en
heal.journalName	Water Science and Technology	en
dc.identifier.isi	ISI:000234617700060	en
dc.identifier.volume	52	en
dc.identifier.issue	10-11	en
dc.identifier.spage	525	en
dc.identifier.epage	532	en