MSOE Library Home	Login My List - 0 Help
	Home   Search   My Account

Basic Advanced Power History

Search:  Author KeywordsBarcodeBib No.Call Number Keyword Search (Enter part of a call number -- use wildcards)General Keyword SearchKeyword Search of Contents NotesKeyword Search of Credits Notes (Enter word or words)Keyword Search of FormatKeyword Search of Item DescriptionKeyword Search of Publisher's NameName Keyword SearchPublication Date Keyword SearchSearch Part of an ISBN NumberSearch Part of an ISSN NumberSeries Title KeywordsSubject KeywordsTitle Keywords       Refine Search     > You're searching: Walter Schroeder Library, Milwaukee School of Engineering

Item Information   Holdings       More by this author     Kort, Daniel G.     Subjects     Groundwater -- Purification -- Biological treatment.     Groundwater -- Purification -- Ion exchange process     Fluidization     MSEV Project.     Browse Catalog     by author:      Kort, Daniel G.       by title:      Biological degradati...         MARC Display

Biological degradation of trace contaminants within an aerated submerged fixed film biological reactor / by Daniel G. Kort. by Kort, Daniel G. Subjects Groundwater -- Purification -- Biological treatment.   Groundwater -- Purification -- Ion exchange process   Fluidization   MSEV Project. Description:  82 leaves : ill. ; 29 cm. Contents:  Thesis advisor: Steven Arant Committee members: Jeffrey MacDonald, Dr. Francis Mahuta Introduction and background -- Literature review -- Methods and materials -- Results and discussion -- Conclusions and recommendations. The purpose of this paper is to point out the challenges in treating trace contaminants with an aerated submerged fixed film biological reactor system when low contaminant specific discharge limitations are established as treatment objective. This analysis focuses on one particular pilot treatment system that was constructed to treat groundwater contaminated with acetone at concentrations between 2 and 6.6 mg/L; methyl ethyl ketone (MEK) between 4.4 and 16 mg/L; tetahydrofuran (THF) between 7.8 and 21 mg/L; and toluene between .08 mg/L and 2.2 mg/L. The contaminated groundwater plume originated from a closed landfill that is listed on the United States Environmental Protection Agency's (USEPA) National Priorities List (NPL). Three groundwater extraction wells were installed down gradient of the groundwater contaminant plume for extraction of the contaminated groundwater. This water was pumped from all three wells to an influent equalization tank for mixing and flow equalization. The water was then pumped into an aerated submerged fixed film bioreactor (SFFB) for biological degradation of the contaminants. The SFFB utilized a fixed in place corrugated PVC cross-flow media. The contaminated groundwater was deficient in nitrogen and phosphorous so urea and ortho-phosphate were fed to the system to meet the biological demand. The SFFB was followed by a down stream inclined plate clarifier and solids storage tank. The USEPA set contaminant specific discharge limits for acetone of 50 mcg/L, MEK of 50 mcg/L, THF of 100 mcg/L, and toluene of 25 mcg/L. Sixteen months of operating data from the SFFB was used in this study. The study demonstrated that the SFFB is very successful at removing greater than 99% of the target contaminants with low influent contaminant concentrations and very low effluent contaminant objectives. The average mass loading of acetone, MEK, THF, and toluene during operation of the pilot scale system were 0.14 lbs/day, 0.39 lbs/day, 0.56 lbs/day, and 0.04 lbs/day respectively. The pilot system performance was analyzed to determine the required minimum surface area required to treat the groundwater to a level below the contaminant specific discharge limits for each contaminant. THF was determined to require the greatest surface area to treat below the contaminant specific discharge limit, and had a maximum loading rate of 0.015 lbs of THF per 1,000 square feet of media surface area per day. This study reinforces the importance of bench scale testing of pilot scale testing of SFFB's prior to the final design of a full scale treatment system in order to determine the removal rate of each contaminant, particularly when the system is designed to treat trace contaminants or there are contaminant specific discharge limitations placed on the treatment systems effluent.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .K67 2010 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

Horizon Information Portal 3.25_9885

© 2001-2013 SirsiDynix All rights reserved.