Simultaneous phosphorus and nitrogen removal using aluminum based water treatment residual
dc.contributor.author | Liang, Qian, author | |
dc.contributor.author | Carlson, Kenneth, advisor | |
dc.contributor.author | Davis, Jessica, committee member | |
dc.contributor.author | Sharvelle, Sybil, committee member | |
dc.date.accessioned | 2007-01-03T05:35:28Z | |
dc.date.available | 2007-01-03T05:35:28Z | |
dc.date.issued | 2011 | |
dc.description.abstract | In this study, an aluminum-based water treatment residual (Al-WTR) from a local water treatment facility was investigated for its capacity for phosphorus (P) and nitrogen (N) removal in wastewater. Characterization results indicated that Al-WTR had a high content of amorphous aluminum hydroxide, which is able to bond phosphorus in solution mainly via ligand exchange. Also, Al-WTR was found to be rich in bio-available carbon, which can facilitate biological denitrification for N removal. Batch equilibrium tests analyzed the P sorption parameters according to Langmuir and Freundlich isotherms. The results of the maximum sorption capacity were 4.498, 3.258 and 2.038 g/kg at pH values of 4, 7, and 9 respectively, indicating that P sorption was favored at lower pH conditions. However, the sorption capacity results may not reflect that in continuous-flow conditions. Al-WTR was shown to be a more effective sorbent for orthophosphate phosphorus (ortho-P) than total phosphorus (TP), but still had promising removals (greater than 90%) to both. Simultaneous P and N removal in wastewater was tested in column experiments in a continuous-flow mode. 95.9% removal of ortho-P and 90.0 % removal were achieved. Also, NO3- removal was highly efficient (99.6%). In sum, using Al-WTR as a P and N mitigation agent is a feasible and sustainable technology, and could be applied in P and N control practices in point-sources and non-point sources. | |
dc.format.medium | born digital | |
dc.format.medium | masters theses | |
dc.identifier | Liang_colostate_0053N_10744.pdf | |
dc.identifier.uri | http://hdl.handle.net/10217/48205 | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Colorado State University. Libraries | |
dc.relation.ispartof | 2000-2019 | |
dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
dc.subject | nitrogen | |
dc.subject | nutrient control | |
dc.subject | phosphorus | |
dc.subject | water treatment residual | |
dc.title | Simultaneous phosphorus and nitrogen removal using aluminum based water treatment residual | |
dc.type | Text | |
dcterms.rights.dpla | This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). | |
thesis.degree.discipline | Civil and Environmental Engineering | |
thesis.degree.grantor | Colorado State University | |
thesis.degree.level | Masters | |
thesis.degree.name | Master of Science (M.S.) |
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