Proposal of an Automated Workflow for Appropriate Tile Drainage Simulation in Denitrifying Bioreactor Planning and Design Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/mc87pw396

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  • Denitrifying bioreactors are an edge-of-field treatment technology particularly well suited for nitrate removal from subsurface (tile) drainage effluent of agricultural lands. The effectiveness of a proposed denitrifying bioreactor is site-specific and depends upon the complicated interplay of field and environmental parameters controlling discharge events, nitrate concentrations, subsurface temperatures, dissolved oxygen levels, pH levels, and the relative timing of each. Furthermore, denitrifying bioreactors will perform poorly still at sites well suited to their incorporation if they are not designed and operated using appropriate parameters for the drainage discharge and nitrate levels they intercept. This thesis discusses an automated workflow for the assisted creation and calibration of subsurface drainage simulations appropriate for use in planning the construction and operation of denitrifying bioreactors. The workflow was designed such that users of flexible backgrounds may 1) quickly build first-guess feasibility simulations for denitrifying bioreactor performance at a given site, 2) Calibrate the first-guess simulations using measurements of discharge and nitrate concentration until satisfied with the simulation performance, and 3) proceed to determine efficient design and operation parameters for a denitrifying bioreactor using the results of the calibrated simulation. To demonstrate and test the automated workflow concept, it was used to create simulations for four fields in the Oregon Willamette Valley. Results of the first guess feasibility simulations, 12-point calibrated simulations, and 20-point calibrated simulations were compared with measurements of tile drainage and nitrate concentrations collected in a previous study.
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  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2017-09-25T16:13:32Z (GMT) No. of bitstreams: 1GrohmanTravisA2018.pdf: 7620209 bytes, checksum: 1f53d4f3c11adbfaf0fd04c80727f370 (MD5)
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  • description.provenance : Rejected by Julie Kurtz(julie.kurtz@oregonstate.edu), reason: Hi Travis,Rejecting because starting with page 108 to the end, there is not any page numbers. Also on the VBA Code, some of the text is running off the page, so should be revised.Everything else looks good. Once revised, log back into ScholarsArchive and go to the upload page. Replace the attached file with the revised PDF and resubmit.Thanks,Julie on 2017-09-22T21:37:29Z (GMT)

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