scholarly journals Analysis of efficiency of pollution reduction measures in rural basin using MIKE Basin model. Case study: Olšava River Basin

2014 ◽  
Vol 62 (1) ◽  
pp. 43-54 ◽  
Author(s):  
Jana Kaiglová ◽  
Jakub Langhammer
Keyword(s):  
Water Pollution ◽  
River Basin ◽  
Municipal Wastewater ◽  
Arable Land ◽  
Pollution Reduction ◽  
Municipal Wastewater Treatment ◽  
Model Case ◽  
Eu Legislation ◽  
Variable Topography

Abstract This paper presents the results of testing the applicability of the MIKE Basin model for simulating the efficiency of scenarios for reducing water pollution. The model has been tested on the Olšava River Basin (520 km2) which is a typical rural region with a heterogeneous mix of pollution sources with variable topography and land use. The study proved that the model can be calibrated successfully using even the limited amount of data typically available in rural basins. The scenarios of pollution reduction were based on implementation and intensification of municipal wastewater treatment and conversion of arable land on fields under the risk of soil erosion to permanent grassland. The application of simulation results of these scenarios with proposed measures proved decreasing concentrations in downstream monitoring stations. Due to the practical applicability of proposed measures, these could lead to fulfilment of the water pollution limits required by the Czech and EU legislation. However, there are factors of uncertainty that are discussed that may delay or limit the effect of adopted measures in small rural basins.

Municipal wastewater treatment with pond–constructed wetland system: a case study

2005 ◽  
Vol 51 (12) ◽  
pp. 325-329 ◽  
Author(s):  
X. Wang ◽  
X. Bai ◽  
J. Qiu ◽  
B. Wang
Keyword(s):  
Constructed Wetland ◽  
Municipal Wastewater ◽  
Municipal Wastewater Treatment ◽  
Oxidation Pond ◽  
System A ◽  
Treated Effluent ◽  
Wetland System ◽  
Oxidation Ponds ◽  
Better Than

The performance of a pond–constructed wetland system in the treatment of municipal wastewater in Kiaochow city was studied; and comparison with oxidation ponds system was conducted. In the post-constructed wetland, the removal of COD, TN and TP is 24%, 58.5% and 24.8% respectively. The treated effluent from the constructed wetland can meet the Chinese National Agricultural and Irrigation Standard. The comparison between pond–constructed wetland system and oxidation pond system shows that total nitrogen removal in a constructed wetland is better than that in an oxidation pond and the TP removal is inferior. A possible reason is the low dissolved oxygen concentration in the wetland. Constructed wetlands can restrain the growth of algae effectively, and can produce obvious ecological and economical benefits.

Analyzing wet weather flow management using state of the art tools

2008 ◽  
Vol 57 (8) ◽  
pp. 1247-1251 ◽  
Author(s):  
Denny S. Parker ◽  
Rion P. Merlo ◽  
Jose A. Jimenez ◽  
Eric J. Wahlberg
Keyword(s):  
Suspended Solids ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
State Of The Art ◽  
Fluid Dynamic ◽  
Municipal Wastewater Treatment ◽  
Secondary Clarifier ◽  
Wet Weather ◽  
Municipal Wastewater Treatment Plants

Optimal secondary clarifier performance is crucial to meet treatment requirements, especially when treating peak wet weather flows (PWWFs), to prevent high effluent suspended solids (ESS) concentrations and elevated sludge blankets. A state-of-the-art computational fluid dynamic (CFD) model was successfully used as a design and diagnostic tool to optimize performance for municipal wastewater treatment plants subject to significant PWWFs. Two case studies are presented. For Case Study 1, the model was used to determine the number of secondary clarifiers that will be necessary to treat future PWWF conditions for a plant under design. For Case Study 2, the model was used to identify modifications that are currently being made to increase the clarifier capacity for handling PWWF.

scholarly journals National and Local Definitions of an Environmental Nuisance: Water Pollution and River Decontamination in Six Urban Areas of Quebec, 1945–1980

2016 ◽  
Vol 44 (1-2) ◽  
pp. 10-23
Author(s):  
Stéphane Castonguay ◽  
Vincent Bernard
Keyword(s):  
Water Pollution ◽  
Cultural History ◽  
Urban Areas ◽  
Municipal Wastewater ◽  
Local Level ◽  
Municipal Wastewater Treatment ◽  
Industrial Growth ◽  
Consensual Definition ◽  
The Subject ◽  
Shed Light

When it created the Water Purification Board in 1961, the Quebec government intended to proceed with a major reorganization of the municipal wastewater treatment and drinking water systems throughout the province. In the following decades, the Department of Municipal Affairs and Environment developed a series of programs and policies for the treatment of wastewater. If water pollution then appeared as a national problem and the subject of a consensual definition, neighbouring communities were facing specific problems that government policies tended to obscure. Our analysis of six municipalities (Drummondville, Sherbrooke, Saint-Hyacinthe, Granby, Trois-Rivières, and Shawinigan) located in three river basins (Saint-François, Yamaska, and Saint-Maurice), each with its own topography and hydrology, population, and industrial growth, and political and cultural history, reveals precisely how communities articulated their different understandings of pollution problems, as well as their distinct definitions of nuisance and means of coping with pollution. By identifying, at the local level, multiple representations of pollution phenomena and practices put forward to decontaminate water, we shed light on the difficulties surrounding the implementation of water treatment infrastructure in municipalities across Quebec between 1945 and 1980.

scholarly journals Wpływ oczyszczalni ścieków na redukcję zanieczyszczeń odprowadzanych w czeskiej części dorzecza Odry

2020 ◽  
Vol 29 (2) ◽  
pp. 123-135
Author(s):  
Libor Ansorge ◽  
Elžbieta Čejka ◽  
Jiří Dlabal ◽  
Lada Stejskalová
Keyword(s):  
Wastewater Treatment ◽  
River Basin ◽  
Municipal Wastewater ◽  
Water Footprint ◽  
Wastewater Treatment Plants ◽  
Point Sources ◽  
Municipal Wastewater Treatment ◽  
Best Available Technologies ◽  
Environmental Objectives ◽  
Odra River

Surface water pollution is referred to be a problem in the entire Odra river basin. In sub-basins, an insufficient degree of wastewater treatment has been identified as a major problem – in relation to the best available technologies and environmental objectives of Directive 2000/60/EC. The grey water footprint indicator was used to express the influence of point sources of pollution (industrial and municipal wastewater treatment plants) on discharged pollution reduction in the Czech part of the international Odra river basin. The number of 391 records of wastewater treatment plants for the period 2004–2018 was analysed. The results show that the wastewater treatment plants reduce by up to 92% the potential water needs for dilution of pollution discharged into waters in the Czech part of the Odra river basin.

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