Swine Wastewater Treatment in an Integrated System of Anaerobig Digestion and Duckweed Nutrient Removal: Pilot Study

Simple item page
dc.contributor.advisorSarah Liehr, Committee Memberen_US
dc.contributor.advisorJiayang Cheng, Committee Chairen_US
dc.contributor.advisorFrancis de los Reyes, Committee Memberen_US
dc.contributor.authorLyerly, Courtney Neilen_US
dc.date.accessioned2010-04-02T17:55:35Z
dc.date.available2010-04-02T17:55:35Z
dc.date.issued2005-04-13en_US
dc.degree.disciplineBiological and Agricultural Engineeringen_US
dc.degree.levelthesisen_US
dc.degree.nameMSen_US
dc.description.abstractOrganics destruction and nutrient uptake in an integrated pilot system of anaerobic digestion and duckweed nutrient removal for swine wastewater treatment were monitored under field conditions. Raw swine wastewater of 100 gallons/day was first treated in a 1,000-gallon anaerobic digester with floating ballast rings. Organic compounds in the wastewater were digested to produce biogas. Many nutrients including nitrogen and phosphorus remain in the effluent of the anaerobic digester. Three duckweeds (Lemna gibba 8678, Lemna minor 8627, and Spirodela, punctata 7776) were grown in three 1,000- gallon tanks to recover nutrients from the anaerobic effluent. The duckweed was periodically harvested and can be used as animal, poultry, and fish feed. The Three species were compared for growth and nutrient removal characteristics. This research provides an initial understanding of the attached-growth anaerobic digester and the characteristics exhibited by duckweed in the treatment of swine wastewater under conditions similar to those found in North Carolina. Both the anaerobic digester and the duckweed tanks were run as completely mixed systems. The performance of the system was monitored by measuring chemical oxygen demand (COD), total Kjeldahl nitrogen (TKN), ammonia nitrogen, total phosphorus (TP), ortho-phosphate-phosphorus, and pH in the influent and effluent of each treatment unit.en_US
dc.identifier.otheretd-01092005-001638en_US
dc.identifier.urihttp://www.lib.ncsu.edu/resolver/1840.16/453
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 NC State University 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.subjectNitrogenen_US
dc.subjectNutrient removalen_US
dc.subjectPhosphorousen_US
dc.subjectSwine wastewater treatmenten_US
dc.subjectAmmoniumen_US
dc.subjectAnaerobic digesteren_US
dc.subjectDuckweeden_US
dc.subjectLemna gibbaen_US
dc.subjectSpirodela punctataen_US
dc.subjectLemna Minoren_US
dc.titleSwine Wastewater Treatment in an Integrated System of Anaerobig Digestion and Duckweed Nutrient Removal: Pilot Studyen_US

Files

Original bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
etd.pdf
Size:
1.2 MB
Format:
Adobe Portable Document Format
Download

Collections

Theses