Continuous Hydrologic Modeling with HMS in the Aggtelek Karst Region
Robert Koch,
Katalin Bene
Issue:
Volume 1, Issue 1, July 2013
Pages:
1-7
Received:
15 May 2013
Published:
10 June 2013
DOI:
10.11648/j.hyd.20130101.11
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Views:
Abstract: Karst aquifers have complex groundwater flow patterns. In Hungary, Aggtelek is one of the best-studied karst regions. Research started in the early 1960’s to study the surface and subsurface hydrology of the region. Data collected included hydro-meteorological measurements, surface flow experiments and analyses, direct and indirect determination of karst infiltration, and water level measurements in karst wells. Between 1959 and 2000, daily measurements were conducted at the 15 largest karst springs. Creating a robust prediction model for this area has been elusive. This paper discusses the development, parameterization and calibration of the soil moisture accounting (SMA) method in the Hydrologic Modeling System (HMS) for one of the watersheds in this region. Parameters were studied with respect to sensitivity in generating baseline outflows for the watershed. The model was calibrated using a eight-year span of data and five different statistical measures to determine goodness-of-fit. Once calibrated, the model was used to predict baseline flow for other time periods and the results compared to measured data. The model produced reasonable results, but illustrated the need for more refined application of specific parameters.
Abstract: Karst aquifers have complex groundwater flow patterns. In Hungary, Aggtelek is one of the best-studied karst regions. Research started in the early 1960’s to study the surface and subsurface hydrology of the region. Data collected included hydro-meteorological measurements, surface flow experiments and analyses, direct and indirect determination of...
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Removal of Dye by Electrocoagulation Method
Krishna Kumar,
Omprakash Sahu
Issue:
Volume 1, Issue 1, July 2013
Pages:
8-11
Received:
29 May 2013
Published:
10 July 2013
DOI:
10.11648/j.hyd.20130101.12
Downloads:
Views:
Abstract: The aim of study was designed to investigate removal of dye (reactive scarlet) by electrocoagulation using tubular iron electrodes. Experiments were conducted to examine the effects of the operating parameters, such as pH, current density and flow rate on dye and COD removal in the electrocoagulation process. The energy consumptions were also analyzed. COD of the wastewater was reduced from 620.4 to 21.5 mg/L with the removal efficiency of 96.5 % at the current density of 30 mA/cm2, supporting electrolyte concentration of 0.1 M Na2SO4, and flow rate of 200 mL/min. The high dye removal efficiencies were obtained at all experiments. The initial dye concentration of 200 mg/L was reduced to 1.08 mg/L with the removal efficiency of 99.4 % at 30mA/cm2 after 90 min electrocoagulation.
Abstract: The aim of study was designed to investigate removal of dye (reactive scarlet) by electrocoagulation using tubular iron electrodes. Experiments were conducted to examine the effects of the operating parameters, such as pH, current density and flow rate on dye and COD removal in the electrocoagulation process. The energy consumptions were also analy...
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