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oai:www.ideals.illinois.edu:2142/45666 2023-07-11 col_2142_14770 col_2142_5131 com_2142_3518 com_2142_234 com_2142_5130

Liu, Wen-Tso Moor, Johnathan 2013-08-22T16:57:12Z 2013-08-22T16:57:12Z 2015-08-22T10:00:50Z 2013-08 2013-08-22T16:57:12Z 2013-08 Biological ammonia oxidation has received considerable industry research recently as water utilities seek to minimize chlorine demand and potential disinfection byproduct formation. Many plants are forced to chlorinate before primary filtration in order to meet disinfection requirements, so a pretreatment configuration is the one of the few feasible locations for biological activity. Parallel fixed-bed column reactors were operated in order to investigate the applicability of biological pretreatment for Midwestern groundwater containing dissolved methane, ammonia, and iron. One column was loaded with high-porosity gravel, while the second contained sintered glass pellets. Both media materials were marketed as “biological support” for aquiculture applications, and both columns were operated at a 10 minute empty bed contact time (EBCT) with continuous aeration to maintain aerobic conditions. Complete oxidation of influent ammonia was achieved within 50 days of startup without any nutrient amendment or microbial inoculation. Terminal restriction fragment length polymorphism revealed temporal and depth-related changes in microbial community structure throughout the ripening period in parallel with performance data. This study demonstrates that pretreatment systems could be a viable location for biological ammonia oxidation and a potential treatment choice for infrastructure-confined Midwestern utilities. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2013-07-16T17:15:14Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 3 Moor_Johnathan.pdf: 1154069 bytes, checksum: c8928cbabba14dc5c7454b5d7b6da175 (MD5) Moor_Johnathan.docx: 1658650 bytes, checksum: e0d25b473dc4b48073b5d9fd708daaa8 (MD5) Moor_Johnathan.pdf: 1154256 bytes, checksum: 31f270c438e21214b4abb47f73a83b27 (MD5) Made available in DSpace on 2013-08-22T16:57:12Z (GMT). No. of bitstreams: 3 Johnathan_Moor.pdf: 1154239 bytes, checksum: 3c3a08a0d71e3f62fbc7cd9684a7f8c1 (MD5) Moor_Johnathan.docx: 1658138 bytes, checksum: ff9f8b96ebdc639c11503a09a141e7fb (MD5) license.txt: 4061 bytes, checksum: ef42fb2bc0237fd4d53d846396bf9abc (MD5) Restriction data tranferred 2014-07-01T11:36:33-05:00 Original Data Group with Access Administrator Release Date: 2015-08-22 11:57:26 UTC Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Item marked as restricted to the 'Administrator' Group (id=1) by Seth Robbins (srobbins@illinois.edu) on 2013-08-22T16:57:40Z Item is restricted until 2015-08-22T16:57:26Z Limited Restriction Lifted for Item 45648 on 2015-08-22T10:00:50Z. http://hdl.handle.net/2142/45666 en Copyright 2013 Johnathan Moor drinking water groundwater molecular microbiology pretreatment biological water treatment microbial ecology Performance and microbial community structure of Midwestern groundwater pretreatment reactors text Civil & Environmental Eng 1251 Environ Engr in Civil Engr 0231 University of Illinois at Urbana-Champaign Thesis M.S. MS:Env Engr Civil Engr -UIUC 10KS0231MS