scholarly journals Development of Košice Region by Implementation of Environmental Projects in the Field of Water Management - Case Study

2014 ◽  
Vol 33 (4) ◽  
Author(s):  
Henrieta Pavolová ◽  
Adriana Csikósová ◽  
Tomáš Bakalár
Keyword(s):  
Water Management ◽  
Agricultural Production ◽  
Wastewater Treatment Plants ◽  
Environmental Issues ◽  
Environmental Benefits ◽  
Treated Wastewater ◽  
Management Case Study ◽  
Application Specific

AbstractThe development of the regions in Slovakia in recent years has significant disparities in both so-cio-economic as well as environmental issues, as evidenced by the eight environmentally polluted areas (these areas are highly urbanised with industrial agglomerations or intensive agricultural production).This article deals with a management system model of regional by implementation of projects in environmental field of water management with application-specific benefits and risks arising from the process of their implementation in relation to regional development. It analyses projects in the area of water management of one of the regions of Slovakia, KoŠice region in particular, in terms of connection to public water duct and sewer, identifes a strategy for development of the region and its socio-economic and environmental benefits based on the analysis of drinking water, the quan-tity and quality of treated wastewater through wastewater treatment plants (WTPs). It identifes the infuencing factors of benefits and risks and proposes procedure for solving at various stages.

International product cost comparison in the field of water management

2001 ◽  
Vol 44 (2-3) ◽  
pp. 85-93 ◽  
Author(s):  
H. Bode ◽  
P. Lemmel
Keyword(s):  
Water Management ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Cost Comparison ◽  
Mechanical Equipment ◽  
Capital Costs ◽  
Product Costs

Comparing international costs in the field of water management is difficult. The frame conditions in the various countries are very different. They influence the costs and particularly the sewage charges in a complex way. Some of these conditions are outlined by analyzing the situation in Germany as a “case study”. An objective comparison should deal with the in situ arising product costs as annual costs. The product costs consist of both the operating and the capital costs. The annual product costs of 34 wastewater treatment plants in six different European countries are presented. The observed differences in the quality of the construction and of the mechanical equipment of the plants were taken into account with different depreciation periods. The product costs in four of six countries, including Germany, were found to be nearly at the same level. Although the German frame conditions are demanding and difficult the expectation of outstanding high product costs was not confirmed.

scholarly journals A Mechanistic Model to Assess the Fate of Naphthalene and Benzo(a)pyrene in a Chilean WWTP

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1313
Author(s):  
Antonia Arroyo ◽  
Fabián Provoste ◽  
Montserrat Rodríguez ◽  
Ana L. Prieto
Keyword(s):  
Wastewater Treatment Plants ◽  
Mechanistic Model ◽  
Treated Wastewater ◽  
Urban Centers ◽  
Potable Reuse ◽  
Conventional Activated Sludge ◽  
Regulatory Standards ◽  
Polycyclic Aromatic ◽  
De Facto Reuse

Polycyclic aromatic hydrocarbons (PAHs) are a family of organic compounds of widespread presence in the environment. They are recalcitrant, ubiquitous, prone to bioaccumulation, and potentially carcinogenic. Effluent from wastewater treatment plants (WWTPs) constitutes a major source of PAHs into water bodies, and their presence should be closely monitored, especially considering the increasing applications of potable and non-potable reuse of treated wastewater worldwide. Modeling the fate and distribution of PAHs in WWTPs is a valuable tool to overcome the complexity and cost of monitoring and quantifying PAHs. A mechanistic model was built to evaluate the fate of PAHs in both water and sludge lines of a Chilean WWTP. Naphthalene and benzo(a)pyrene were used as models of low-MW and high-MW PAHs. As there were no reported experimental data available for the case study, the influent load was determined through a statistical approach based on reported values worldwide. For both naphthalene and benzo(a)pyrene, the predominant mechanism in the water line was sorption to sludge, while that in the sludge line was desorption. Compared to other studies in the literature, the model satisfactorily describes the mechanisms involved in the fate and distribution of PAHs in a conventional activated sludge WWTP. Even though there is evidence of the presence of PAHs in urban centers in Chile, local regulatory standards do not consider PAHs in the disposal of WWTP effluents. Monitoring of PAHs in both treated effluents and biosolids is imperative, especially when considering de facto reuse and soil amendment in agricultural activities are currently practiced downstream of the studied WWTP.

scholarly journals Converting Community Knowledge into Catchment Nutrient Limits: A Constructivist Analysis of a New Zealand Collaborative Approach to Water Management

2013 ◽  
Vol 8 (2) ◽  
pp. 205-225 ◽  
Author(s):  
Ronlyn Duncan
Keyword(s):  
Water Management ◽  
Local Knowledge ◽  
Collaborative Approach ◽  
Island Region ◽  
Policy Practice ◽  
Governance Model ◽  
Knowledge Governance ◽  
Management Case Study

The question posed in this article is how shifts in governance ushered in by the sustainability paradigm are reshaping knowledge governance. Drawing on constructivist theories of knowledge, I examine the tension between the sustainability mandate to open up knowledge making to local knowledge, and conventional science policy practice that would see it excluded. I present a water management case study from New Zealand's South Island region of Canterbury, where communities are involved in establishing catchment nutrient limits to manage land use and water quality. It is concluded that although local knowledge was embraced within the knowledge-making process, the pursuit of epistemic authority led to its recalibration, aggregation, and standardization. As such, it was stripped of its complexity. This research highlights the role of politics in anchoring the linear knowledge governance model in place and the challenge for supplanting it.

scholarly journals Exploring the quality of pre-service teachers’ critical analysis of cartoons within environmental contexts in the Life Sciences

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Rajendran P. Pillay ◽  
Samantha Govender
Keyword(s):  
Teaching Methods ◽  
Cognitive Abilities ◽  
Life Sciences ◽  
Environmental Issues ◽  
Environmental Challenges ◽  
Case Study Design ◽  
Analytical Thinking ◽  
Residential University

The world is presently facing a myriad of environmental challenges. One way to address these challenges is through the development of cognitive abilities to analyse environmental issues and respond to them appropriately. There are a number of approaches used in education processes to develop the cognitive abilities of students; one of them is the use of conceptual or reasoning cartoons. This article reports on an exploratory study of the quality of pre-service teachers’ cognitive abilities in the analysis of three conceptual cartoons depicting real environmental challenges. The study was interpretivist in nature and followed a case study design. The participants were a convenient sample of students (n = 32) at year level three, at a Southern African residential university, doing a Life Science’s teaching methods module. Students were required to analyse three environmental cartoons which they had not previously seen or discussed. The responses were coded according to the basic analytical steps of critical thinking and analysed qualitatively and quantitatively. The results showed that most responses were framed as descriptions of the cartoon rather than higher order analytical thinking; most students were unable to follow a sequence of analytical thinking; presentation of cognition was textual; and most pre-service teachers’ responses were phrased in a way that made it seem as if they were not part of the environmental issue. It is recommended that Life Sciences’ methodology pre-service teachers be categorically developed in analytical thinking of environmental issues, as they have a crucial role to play as future citizens.

Cleaner Production Associated with Financial and Environmental Benefits: A Case Study on Automotive Industry

2013 ◽  
Vol 845 ◽  
pp. 873-877 ◽  
Author(s):  
Geraldo C. Oliveira Neto ◽  
Silvio M. Souza ◽  
Elesandro A. Baptista
Keyword(s):  
Production Process ◽  
Automotive Industry ◽  
Raw Materials ◽  
Environmental Issues ◽  
Economic Benefits ◽  
Cleaner Production ◽  
Environmental Benefits ◽  
Financial Gain ◽  
A Company

The Cleaner Production implementation has been expanding significantly in Brazil and there is a strong tendency that companies start to care about environmental issues, such as: input reduction, production process less aggressive to the environment, among other factors inherent to manufacturing process. This paper presents a case study conducted in a company that operates in the field of automotive industry, more specifically in the manufacture of gears for transmissions and diesel engines. The main aims of this research are analyze a machining line focusing on Cleaner Production indicators and evaluate the environmental and economic benefits using the method Material Intensity Factor. The results showed that the company had both environmental benefits and financial gains due to the reduction of raw materials by means of replaced or eliminated material from the production process. The relevant aspect of this study is the possibility of financial gain associated with environmental gains and benefits by means of incremental changes in the production system.

scholarly journals Modeling and monitoring of treated wastewater based on water quality assurance parameters

2019 ◽  
Author(s):  
CI Chemistry International ◽  
Elias Barsenga Hassen ◽  
Abraham M. Asmare
Keyword(s):  
Water Quality ◽  
Wastewater Treatment Plants ◽  
Back Propagation ◽  
Predictive Performance ◽  
Quality Parameters ◽  
Treated Wastewater ◽  
Mathematical Tool ◽  
Effluent Water ◽  
Feed Forward Back Propagation

Recently, process control in wastewater treatment plants (WWTPs) is, mostly accomplished through examining the quality of the water effluent and adjusting the processes through the operator’s experience. This practice is inefficient, costly and slow in control response. A better control of WTPs can be achieved by developing a robust mathematical tool for performance prediction. Due to their high accuracy and quite promising application in the field of engineering, Artificial Neural Networks (ANNs) are attracting attention in the domain of WWTP predictive performance modeling. This work focuses on applying ANN with a feed-forward, back propagation learning paradigm to predict the effluent water quality of the Habesha brewery WTP. Data of influent and effluent water quality covering approximately an 11-month period (May 2016 to March 2017) were used to develop, calibrate and validate the models. The study proves that ANN can predict the effluent water quality parameters with a correlation coefficient (R) between the observed and predicted output values reaching up to 0.969. Model architecture of 3-21-3 for pH and TN, and 1-76-1 for COD were selected as optimum topologies for predicting the Habesha Brewery WTP performance. The linear correlation between predicted and target outputs for the optimal model architectures described above were 0.9201 and 0.9692, respectively.

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