Evaluation of UV disinfection systems for large-scale secondary effluent

Ho, C-FH; Pitt, P; Mamais, D; Chiu, C; Jolis, D

dc.contributor.author	Ho, C-FH	en
dc.contributor.author	Pitt, P	en
dc.contributor.author	Mamais, D	en
dc.contributor.author	Chiu, C	en
dc.contributor.author	Jolis, D	en
dc.date.accessioned	2014-03-01T01:47:10Z
dc.date.available	2014-03-01T01:47:10Z
dc.date.issued	1998	en
dc.identifier.issn	10614303	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25170
dc.subject	Coliform inactivation	en
dc.subject	Effluent disinfection	en
dc.subject	Pilot study	en
dc.subject	Ultraviolet (UV) light	en
dc.subject	Virus inactivation	en
dc.subject.other	Coliform inactivation	en
dc.subject.other	Virus inactivation	en
dc.subject.other	Coliform bacteria	en
dc.subject.other	Disinfection	en
dc.subject.other	Effluent treatment	en
dc.subject.other	Feedwater treatment	en
dc.subject.other	Hydraulics	en
dc.subject.other	Ultraviolet radiation	en
dc.subject.other	Viruses	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	Water quality	en
dc.subject.other	Water pollution control	en
dc.subject.other	disinfection	en
dc.subject.other	effluent treatment	en
dc.subject.other	ultraviolet radiation	en
dc.subject.other	article	en
dc.subject.other	chlorination	en
dc.subject.other	coliform bacterium	en
dc.subject.other	disinfection	en
dc.subject.other	effluent	en
dc.subject.other	pollution control	en
dc.subject.other	priority journal	en
dc.subject.other	radiation dose	en
dc.subject.other	ultraviolet radiation	en
dc.subject.other	virus inactivation	en
dc.subject.other	water pollution	en
dc.subject.other	water quality	en
dc.title	Evaluation of UV disinfection systems for large-scale secondary effluent	en
heal.type	journalArticle	en
heal.identifier.primary	10.2175/106143098X123264	en
heal.identifier.secondary	http://dx.doi.org/10.2175/106143098X123264	en
heal.publicationDate	1998	en
heal.abstract	A study at the Southeast Water Pollution Control Plant, San Francisco, California, was undertaken to evaluate the feasibility of replacing its current secondary effluent chlorination system with a 6.57 m3/S ultraviolet (UV) disinfection system. Two vertical lamp units and one horizontal lamp unit were pilot tested in parallel. The effective UV dose for coliform removal and the effects of feedwater characteristics and reactor hydraulics were examined. The horizontal pilot unit gave a more consistent performance than the vertical pilot units. Based on the test results, a UV dose of 65 mW · s/cm2 would he required for the plant to achieve the target effluent total coliform level (240 CFU/100 mL) 95% of the time. The large fluctuation of UV disinfection results could be attributed to the wide range of feedwater quality inherent to a combined sewer system. High suspended solids, characteristic of the plant's secondary effluent during storm events, significantly increased the UV dose required to achieve the target coliform level. Existing UV inactivation models were evaluated. The hydraulic behavior of the pilot units was found to significantly affect their test results. Higher virus removal efficiency was observed with the UV systems than the full-scale chlorination system.	en
heal.journalName	Water Environment Research	en
dc.identifier.doi	10.2175/106143098X123264	en
dc.identifier.volume	70	en
dc.identifier.issue	6	en
dc.identifier.spage	1142	en
dc.identifier.epage	1150	en