COLIFORM BACTERIA REMOVAL FROM SEPTIC WASTEWATER IN A PILOT-SCALE COMBINED CONSTRUCTED WETLAND SYSTEM

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dc.authorid0000-0002-6268-7237
dc.contributor.authorTuncsiper, Bilal
dc.contributor.authorAyaz, Selma C.
dc.contributor.authorAkca, Lutfi
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2012
dc.departmentNiğde ÖHÜ
dc.description.abstractSurface and ground water in rural areas where there is a lack infrastructure of sewage is exposed to a risk of bacteriological contamination. Combined constructed wetland (CW) systems appear to be the most feasible solution in preventing bacteriological contamination of waters in these areas. In this study, a pilot-scale combined CW system was designed to remove coliform source pollution in surface water. The system comprised a vertical, non-vegetated CW (Stage I), a horizontal-subsurface flow bed vegetated with Iris (Stage II), and a vertical-subsurface flow bed vegetated with Phragmites (Stage III) connected in series. Coliform bacteria counts (cfu/100 mL) were made in the input and output of all stages under different hydraulic and loading conditions. The average inflow coliform bacteria in stages I, II and III were 4.26, 3.51, and 2.07 for fecal coliforms (FC) and 5.15, 4.38 and 3.05 cfu/100 mL for total coliforms (TC), respectively. The system was capable of significantly reducing FC and TC in septic wastewater effluent. The second stage removed approximately 95%, with higher elimination than in stage II and III. The average overall reductions of fecal and total coliforms were approximately 99%. No seasonal effects on the average removals were observed. Average removal efficiencies were affected by hydraulic residence time (HRT) and input bacteria counts. TUKEY-HSD tests demonstrated that there were statistically significant differences between stages in coliform removal. The results of this study demonstrated that removal efficiency of the system may enhanced due to a longer HRT when single-stage systems are connected in series.
dc.description.sponsorshipTUBITAK-MRC; Istanbul Water and Sewage Management (ISKI); Istanbul Technical University (ITU)
dc.description.sponsorshipThe authors would like to thank the TUBITAK-MRC, Istanbul Water and Sewage Management (ISKI) and Istanbul Technical University (ITU) for support offered during this study.
dc.identifier.doi10.30638/eemj.2012.233
dc.identifier.endpage1879
dc.identifier.issn1582-9596
dc.identifier.issue10
dc.identifier.scopus2-s2.0-84871703116
dc.identifier.scopusqualityQ3
dc.identifier.startpage1873
dc.identifier.urihttps://dx.doi.org/10.30638/eemj.2012.233
dc.identifier.urihttps://hdl.handle.net/11480/4531
dc.identifier.volume11
dc.identifier.wosWOS:000311559500019
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherGH ASACHI TECHNICAL UNIV IASI
dc.relation.ispartofENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectcoliform removal
dc.subjectconstructed wetlands
dc.subjectnatural wastewater treatment
dc.titleCOLIFORM BACTERIA REMOVAL FROM SEPTIC WASTEWATER IN A PILOT-SCALE COMBINED CONSTRUCTED WETLAND SYSTEM
dc.typeArticle

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