Coagulation for treatment of paint industry wastewater

Dovletoglou, O; Philippopoulos, C; Grigoropoulou, H

dc.contributor.author	Dovletoglou, O	en
dc.contributor.author	Philippopoulos, C	en
dc.contributor.author	Grigoropoulou, H	en
dc.date.accessioned	2014-03-01T01:17:37Z
dc.date.available	2014-03-01T01:17:37Z
dc.date.issued	2002	en
dc.identifier.issn	1093-4529	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14591
dc.subject	Aluminum sulphate	en
dc.subject	Coagulation	en
dc.subject	Ferrous sulphate	en
dc.subject	Paint wastewater	en
dc.subject	Polyelectrolytes	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Aluminum compounds	en
dc.subject.other	Coagulation	en
dc.subject.other	Industrial waste treatment	en
dc.subject.other	Iron alloys	en
dc.subject.other	pH effects	en
dc.subject.other	Polyelectrolytes	en
dc.subject.other	Sedimentation	en
dc.subject.other	Sewage sludge	en
dc.subject.other	Turbidity	en
dc.subject.other	Coagulant dose	en
dc.subject.other	Wastewater	en
dc.subject.other	aluminum chloride	en
dc.subject.other	aluminum sulfate	en
dc.subject.other	ferrous sulfate	en
dc.subject.other	article	en
dc.subject.other	paint industry	en
dc.subject.other	pH	en
dc.subject.other	sedimentation	en
dc.subject.other	sludge	en
dc.subject.other	turbidity	en
dc.subject.other	waste water	en
dc.subject.other	waste water management	en
dc.subject.other	water quality	en
dc.subject.other	Alum Compounds	en
dc.subject.other	Aluminum Hydroxide	en
dc.subject.other	Electrochemistry	en
dc.subject.other	Ferrous Compounds	en
dc.subject.other	Hydrogen-Ion Concentration	en
dc.subject.other	Industrial Waste	en
dc.subject.other	Paint	en
dc.subject.other	Waste Disposal, Fluid	en
dc.subject.other	Water Purification	en
dc.title	Coagulation for treatment of paint industry wastewater	en
heal.type	journalArticle	en
heal.identifier.primary	10.1081/ESE-120005992	en
heal.identifier.secondary	http://dx.doi.org/10.1081/ESE-120005992	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	In the present study, the coagulation of paint industry wastewater was examined. Ferrous and aluminum sulphate and polyaluminum chloride (PACl) were used as coagulation agents and the influence of the coagulant dose and effective pH on the quality of treated wastewater was investigated. Optimum pH for FeSO4 addition was near 9.7, the required coagulant dose was about 2g/L and average process efficiency varied between 30 and 80% in COD and between 70 and 99% in turbidity terms, for a wide spectrum of wastewater batches. In the case of Al-2(SO4)(3), no pH adjustment Was needed and process efficiency varied between 70 and 95% in COD and between 90 and 99% in turbidity terms, for an effective dose of 2.5 g/L. Further improvement of process efficiency was possible by raising the pH of the supernatant liquid after alum-sludge sedimentation to 10. In the case of PACl optimum pH was around 7 and process efficiency was about 98% based on both quality parameters, for an effective dose of 4 g/L. Cationic polyelectrolytes were proved to have a higher potential vs. coagulation than anionic ones when acting as primary coagulants. Combination of Al-2(SO4)(3) or PACI with polyclectrolytes resulted in high process efficiencies, while maintaining liquid pH values at acceptable limits.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering	en
dc.identifier.doi	10.1081/ESE-120005992	en
dc.identifier.isi	ISI:000177310200014	en
dc.identifier.volume	37	en
dc.identifier.issue	7	en
dc.identifier.spage	1361	en
dc.identifier.epage	1377	en