AVAILABILITY OF NUMERICAL MATHEMATICAL MODELS TO SOLVE THE APPLIED PROBLEMS OF WATER QUALITY MANAGEMENT OF SHELF ECOSYSTEMS

2017 ◽  
Author(s):  
Kira Slepchuk ◽  
Kira Slepchuk ◽  
Tatyana Khmara ◽  
Tatyana Khmara
Keyword(s):  
Water Quality ◽  
Water Quality Management ◽  
Environmental Parameters ◽  
Biogenic Elements ◽  
Quality Model ◽  
Impurity Transport ◽  
Initial Stage ◽  
Sevastopol Bay ◽  
Phytoplankton Variability ◽  
Result Interpretation

The problems appeared during development and calibration of one-dimensional (vertical resolution) biogeochemical block of water quality model, are discussed. It is extremely useful in the initial stage of shelf ecosystems research because of its simplicity in as implementation as result interpretation. To describe the environmental parameters dynamics we used the Model for Estuarine and Coastal Circulation Assessment, which consists of hydrodynamic model; model of conservative impurity transport; chemical and biological model. The seasonal of biogenic elements and phytoplankton variability in the Sevastopol Bay is studied as an example.

AVAILABILITY OF NUMERICAL MATHEMATICAL MODELS TO SOLVE THE APPLIED PROBLEMS OF WATER QUALITY MANAGEMENT OF SHELF ECOSYSTEMS

2017 ◽  
Author(s):  
Kira Slepchuk ◽  
Kira Slepchuk ◽  
Tatyana Khmara ◽  
Tatyana Khmara
Keyword(s):  
Water Quality ◽  
Water Quality Management ◽  
Environmental Parameters ◽  
Biogenic Elements ◽  
Quality Model ◽  
Impurity Transport ◽  
Initial Stage ◽  
Sevastopol Bay ◽  
Phytoplankton Variability ◽  
Result Interpretation

The problems appeared during development and calibration of one-dimensional (vertical resolution) biogeochemical block of water quality model, are discussed. It is extremely useful in the initial stage of shelf ecosystems research because of its simplicity in as implementation as result interpretation. To describe the environmental parameters dynamics we used the Model for Estuarine and Coastal Circulation Assessment, which consists of hydrodynamic model; model of conservative impurity transport; chemical and biological model. The seasonal of biogenic elements and phytoplankton variability in the Sevastopol Bay is studied as an example.

RIONET: a water quality management tool for river basins

2003 ◽  
Vol 48 (10) ◽  
pp. 47-53 ◽  
Author(s):  
H. Reuter ◽  
G. Krause ◽  
A. Mönig ◽  
M. Wulkow ◽  
H. Horn
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Waste Water Treatment ◽  
Sediment Cores ◽  
Water Quality Management ◽  
River Basins ◽  
Bulk Water ◽  
Management Tool ◽  
Quality Model ◽  
Main River

The water quality management tool RIONET for river basins has been developed with regard to the EU Water Framework Directive. The management tool can simulate the water quality in catchment basins not only in the dimension of a single river but in whole river networks. A submodel of the IWA River Water Quality Model No. 1 is used in RIONET. The river model is based on the assumption that self purification processes in the river takes place both in the benthic biofilm and the bulk water phase. Laboratory experiments with sediment cores underline the major role of the benthic biofilm. The input parameters of the management tool such as volumetric flow rates from waste water treatment plants and flow velocities and discharge in the main river and its tributaries can be loaded directly from geographic information systems (GIS). The subcatchment basin of the river Bode in Saxon Anhalt was used for test runs of RIONET.

Development of water quality management strategies for the proposed isikli reservoir

1998 ◽  
Vol 37 (2) ◽  
pp. 369-376 ◽  
Author(s):  
Orhan Gündüz ◽  
Selçuk Soyupak ◽  
Coskun Yurteri
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Treatment Options ◽  
Water Quality Management ◽  
Management Strategies ◽  
Pollution Sources ◽  
Water Quality Standards ◽  
Quality Model ◽  
Control Techniques ◽  
Administrative Control

A two-dimensional laterally averaged hydrodynamic and water quality model (CE-QUAL-W2) is used to simulate the water quality behavior in the proposed Isikli Reservoir of the Ankara Water Supply System to determine appropriate strategies for the management of water quality. Isikli application of the model is used to demonstrate the potential water quality degradation patterns in the reservoir under different pollution loads. The results of the modeling study are compared with the drinking water quality standards currently effective in Turkey to formulate various water quality management strategies for the reservoir and its catchment area. In addition, various treatment options are evaluated considering the existing treatment system of Ankara City. Based on the findings of this study, treatment or interception of wastewaters originating from the existing pollution sources around the reservoir area are introduced as the major infrastructural control techniques. Further, establishment of protection zones around the reservoir and relocating the possible pollution sources to a point downstream of the dam axis are found to be the most applicable administrative control methods for water quality preservation in the proposed reservoir.

scholarly journals Numerical modelling of FC bacteria using a dynamic and variable mortality rate

2020 ◽  
Vol 10 (3) ◽  
pp. 569-579
Author(s):  
Siavash Mohammadi ◽  
Seyed Mahmood Kashefipour
Keyword(s):  
Water Quality ◽  
Numerical Model ◽  
Mortality Rate ◽  
Model Comparison ◽  
Empirical Equation ◽  
Water Quality Management ◽  
Environmental Parameters ◽  
Accurate Estimate ◽  
Effective Parameters ◽  
Decay Coefficient

Abstract Faecal coliform (FC) microorganisms are one of the most important indicators in water quality management, since their presence reveals the possibility of existence of other dangerous microorganisms, leading to higher health risks. An accurate estimate of the concentration of this indicator helps better evaluation of the water pollution in riverine basins; thus, it is essential for future developments. The FC mortality rate depends on the physical, chemical, and biological processes in rivers. These processes are generally affected by environmental conditions. In this study, the decay coefficient (K) or mortality rate are related to the environmental parameters such as temperature, turbidity, pH, and salinity by an empirical equation. The results showed that turbidity and temperature are the most effective parameters. Moreover, an empirical equation was developed utilizing numerical model calibration, which describes the relationship of the mortality rate (K) with water temperature and turbidity. This equation was then added to the water quality module of the FASTER numerical model. Comparison of the measured FC concentrations with the predicted values obtained from the numerical model showed that the model accuracy significantly improved for the dynamic and variable decay coefficient.

Estimation of the fate of microbial water quality contaminants in a South African river

1995 ◽  
Vol 31 (5-6) ◽  
pp. 271-274
Author(s):  
D. Hohls ◽  
G. du Plessis ◽  
S. N. Venter ◽  
M. C. Steynberg ◽  
C. M. E. De Wet ◽  
...  
Keyword(s):  
Water Quality ◽  
South African ◽  
Stream Water ◽  
Water Quality Management ◽  
Cost Effective ◽  
Stream Water Quality ◽  
Quality Model ◽  
Microbial Water Quality ◽  
First Order ◽  
Effective Manner

The aim of this study was to evaluate the validity of assumptions, regarding assimilative capacity for microbial contaminants, implicit in microbial water quality management in South Africa. A one dimensional steady state stream water quality model, assuming first order decay of microbial water quality variables, was employed in an attempt to describe and predict microbial water quality in the chosen catchment. Based on the faecal coliform counts the results indicated that the processes of decay and dilution were inadequate to yield water quality which complied with South African and international guidelines for the domestic and recreational use of water. It was also found that a first order decay model can, with fairly limited data, allow a manager to investigate different microbial water quality scenarios in a cost-effective manner.

scholarly journals Water-quality modelling of the Upper Mersey river system using an object-oriented framework

2001 ◽  
Vol 3 (3) ◽  
pp. 173-194 ◽  
Author(s):  
Maria Spanou ◽  
Daoyi Chen
Keyword(s):  
Water Quality ◽  
Water Quality Management ◽  
Object Oriented ◽  
River System ◽  
Low Flow ◽  
Quality Model ◽  
Water Quality Simulation ◽  
The United Kingdom ◽  
Frequency Curves

The aim of this paper is to present the recent advances in the development of an object-oriented software system for water-quality management, and discuss the results from its application to the study of the Upper Mersey river system in the United Kingdom. The software has been extended and includes tools for the construction of flow duration and low-flow frequency curves using different methods, the sensitivity analysis and parameter estimation of the water-quality model, and the stochastic simulation of the mass balance at the discharge points of point-source effluents. The application of object-orientation has facilitated the extension of the software, and supported the integration of different models in it. The results of the case study are in general agreement with published values. They also include low flow estimates at the ungauged river sites based on actual data for the artificial sources, and water-quality simulation results, which have not been presented earlier in the literature for the Upper Mersey system.

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