A computer simulation model for investigating the effect of land application of sludge on runoff water quality
CREAMS-NT, a modified version of the field-scale model for Chemicals, Runoff, and Erosion from Agricultural Management Systems (CREAMS) model, was developed to simulate the nitrogen (N) transformations and subsequent nutrient transport processes which occur in the soil following organic waste applic...
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ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-446292021-05-08T05:26:52Z A computer simulation model for investigating the effect of land application of sludge on runoff water quality Deizman, Marcia McCutchan Agricultural Engineering Mostaghimi, Saied Dillaha, Theo A. III Reneau, Raymond B. Jr. Perumpral, John V. LD5655.V855 1989.D449 Runoff Sewage sludge as fertilizer Soils -- Fertilizer movement CREAMS-NT, a modified version of the field-scale model for Chemicals, Runoff, and Erosion from Agricultural Management Systems (CREAMS) model, was developed to simulate the nitrogen (N) transformations and subsequent nutrient transport processes which occur in the soil following organic waste applications. CREAMS-NT accounts for nutrient addition through fertilization and rainfall and losses of N by volatilization, denitrification, plant uptake, leaching, and overland flow. Data required by CREAMS-NT includes runoff volume, sediment yield, percolation, and soil environmental conditions which is generated by the hydrologic and erosion components of the original CREAMS model. The mineralization, nitrification, denitrification, ar1d volatilization processes are simulated using firstâ order knetic equations adjusted for the effects of soil environmental conditions including temperature, moisture, pH, soil/sludge contact, and soil cation exchange capacity. Prior to a runoff event, soil ammnonium-N (NH4 â N) is partitioned between adsorbed and desorbed phases. CREAMS-NT predicts the transport of organic-N, NH4 â N, and sediment=bound phosphorus (P3b) in runoff using enrichment ratios. The transport of soluble nutrients, nitrate-N (NO3 â N), NH4 â N, and soluble P (PTF), is estimated using extraction coefficients. Master of Science 2014-03-14T21:45:07Z 2014-03-14T21:45:07Z 1989-04-22 2012-09-08 2012-09-08 2012-09-08 Thesis Text etd-09082012-040042 http://hdl.handle.net/10919/44629 http://scholar.lib.vt.edu/theses/available/etd-09082012-040042/ en OCLC# 19963022 LD5655.V855_1989.D449.pdf In Copyright http://rightsstatements.org/vocab/InC/1.0/ xii, 258 leaves BTD application/pdf application/pdf Virginia Tech |
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LD5655.V855 1989.D449 Runoff Sewage sludge as fertilizer Soils -- Fertilizer movement |
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LD5655.V855 1989.D449 Runoff Sewage sludge as fertilizer Soils -- Fertilizer movement Deizman, Marcia McCutchan A computer simulation model for investigating the effect of land application of sludge on runoff water quality |
description |
CREAMS-NT, a modified version of the field-scale model for Chemicals, Runoff, and Erosion from Agricultural Management Systems (CREAMS) model, was developed to simulate the nitrogen (N) transformations and subsequent nutrient transport processes which occur in the soil following organic waste applications. CREAMS-NT accounts for nutrient addition through fertilization and rainfall and losses of N by volatilization, denitrification, plant uptake, leaching, and overland flow. Data required by CREAMS-NT includes runoff volume, sediment yield, percolation, and soil environmental conditions which is generated by the hydrologic and erosion components of the original CREAMS model. The mineralization, nitrification, denitrification, ar1d volatilization processes are simulated using firstâ order knetic equations adjusted for the effects of soil environmental conditions including temperature, moisture, pH, soil/sludge contact, and soil cation exchange capacity. Prior to a runoff event, soil ammnonium-N (NH4 â N) is partitioned between adsorbed and desorbed phases. CREAMS-NT predicts the transport of organic-N, NH4 â N, and sediment=bound phosphorus (P3b) in runoff using enrichment ratios. The transport of soluble nutrients, nitrate-N (NO3 â N), NH4 â N, and soluble P (PTF), is estimated using extraction coefficients. === Master of Science |
author2 |
Agricultural Engineering |
author_facet |
Agricultural Engineering Deizman, Marcia McCutchan |
author |
Deizman, Marcia McCutchan |
author_sort |
Deizman, Marcia McCutchan |
title |
A computer simulation model for investigating the effect of land application of sludge on runoff water quality |
title_short |
A computer simulation model for investigating the effect of land application of sludge on runoff water quality |
title_full |
A computer simulation model for investigating the effect of land application of sludge on runoff water quality |
title_fullStr |
A computer simulation model for investigating the effect of land application of sludge on runoff water quality |
title_full_unstemmed |
A computer simulation model for investigating the effect of land application of sludge on runoff water quality |
title_sort |
computer simulation model for investigating the effect of land application of sludge on runoff water quality |
publisher |
Virginia Tech |
publishDate |
2014 |
url |
http://hdl.handle.net/10919/44629 http://scholar.lib.vt.edu/theses/available/etd-09082012-040042/ |
work_keys_str_mv |
AT deizmanmarciamccutchan acomputersimulationmodelforinvestigatingtheeffectoflandapplicationofsludgeonrunoffwaterquality AT deizmanmarciamccutchan computersimulationmodelforinvestigatingtheeffectoflandapplicationofsludgeonrunoffwaterquality |
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