Show simple item record

dc.contributor.authorClabaugh, Matthew McConnellen_US
dc.date.accessioned2014-03-14T20:39:53Z
dc.date.available2014-03-14T20:39:53Z
dc.date.issued2001-05-30en_US
dc.identifier.otheretd-06132001-154255en_US
dc.identifier.urihttp://hdl.handle.net/10919/33547
dc.description.abstractNITRIFICATION OF LANDFILL LEACHATE BY BIOFILM COLUMNS by Matthew M. Clabaugh J.T. Novak, Chairman Department of Environmental Engineering (ABSTRACT) Landfill leachate characteristics vary depending on the operation type of the landfill and the age of the landfill. At landfills operated as bioreactors, where leachate recirculation is practiced, leachate ammonia nitrogen concentrations may accumulate to extremely higher levels than during single pass leaching, thereby requiring treatment before final discharge to a receiving system (Onay, 1998). Usually several physical/chemical wastewater treatment technologies are used to treat the leachate. In most cases the COD and BOD are treated, and then nitrification is performed in a separate sophisticated ex situ system. The additional costs of these systems can be very high. The use of a readily available media for in situ nitrification should be considered a prime objective to avoid extra costs. The possibility of removing ammonia nitrogen from bioreactor landfill leachate using trickling filter biofilm technology was studied in four laboratory scale reactors filled with four different types of packing media. The different packing media were examined to see which media is the most efficient at supporting ammonia removal biofilms. The highest efficiency was achieved by a packing media consisting of pine wood chips. The effects of varied concentration loading, varied hydraulic loading, and nitrification inhibitors were studied. Varied ammonia concentration did not have a huge impact on the ammonia removal rates (77-87%) in the reactor with pine wood media. The ammonia removal rates showed a strong dependence on hydraulic loading rate with the lowest loading rate producing the highest removal rates. Landfill leachate from the Middle Peninsula Landfill in Glens, Virginia was determined not to contain nitrifying inhibitors. Using a wood media filter chip and a low hydraulic loading rate was determined to be the best method to remove ammonia nitrogen from landfill bioreator leachate. Keywords: bioreactor landfill, nitrification, nitrogen removal, biofilm, packing media, leachateen_US
dc.publisherVirginia Techen_US
dc.relation.haspartfinal.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectpacking mediaen_US
dc.subjectbiofilmen_US
dc.subjectlandfillen_US
dc.subjectnitrificationen_US
dc.subjectleachate recirculationen_US
dc.titleNitrification of Landfill Leachate by Biofilm Columnsen_US
dc.typeThesisen_US
dc.contributor.departmentEnvironmental Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineEnvironmental Planningen_US
dc.contributor.committeechairNovak, John T.en_US
dc.contributor.committeememberRandall, Clifford W.en_US
dc.contributor.committeememberGoldsmith, C. Douglas Jr.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06132001-154255/en_US
dc.date.sdate2001-06-13en_US
dc.date.rdate2002-06-14
dc.date.adate2001-06-14en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record