scholarly journals Effect of Solar Canals on Evaporation, Water Quality, and Power Production: An Optimization Study

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2103 ◽  
Author(s):  
Sherine El Baradei ◽  
Mai Al Sadeq
Keyword(s):  
Water Quality ◽  
Well Being ◽  
Power Production ◽  
Mitigation Measures ◽  
Optimum Conditions ◽  
Water Quality Variables ◽  
Optimization Study ◽  
New Energy ◽  
To Come

Both energy and availability of water with good quality are essential for the well-being of humans. Thus, it is very important to study the parameters that would affect water quality, so as to come up with mitigation measures if water quality would be at risk or negatively affected. Moreover, it is very important to always search for new energy resources, especially if they are renewable. This research study is concerned with studying solar canals and their effect on evaporation and water quality variables of canals covered by solar cells, as well as the effect on power production. Both a mathematical model and an optimization study were done, in order to determine the previously mentioned effects, and thus, to determine the most favorable covering percentage of the case study canal’s area that would lead to minimum evaporation volumes, maximum power, and yet preserving and meeting the standards of the water quality variables of the covered waterway. Water quality variables that were investigated are dissolved oxygen concentration, algae, nutrients, and pH of the water. It was found that, between 33% and 50% covering of the canal, the optimum conditions will be met.

Improving effectiveness of mitigation measures in EIA follow-up

2015 ◽  
Vol 26 (4) ◽  
pp. 518-537 ◽  
Author(s):  
Amarilis Lucia Casteli Figueiredo Gallardo ◽  
Caio Pompeu Cavalhieri ◽  
Sofia Julia Alves Macedo Campos ◽  
Omar Yazbek Bitar
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Quality Parameters ◽  
Mitigation Measures ◽  
Water Quality Control ◽  
Content Type ◽  
Study Approach ◽  
Phase Water

Purpose – The purpose of this paper is to investigate the effectiveness of mitigation measures adopted in a scheme of EIA follow-up by examining their performance in reducing geo-environmental impacts in earthwork activities during the Rodoanel southern section construction in São Paulo, Brazil. This environment is fragile in terms of affected watersheds because the highway crosses two important reservoirs that supply most of the metropolitan water demand. Therefore, this research also aims at promoting water quality control. Design/methodology/approach – This study combines complementary sources as evidences in the literature and field checks, tests and monitoring. The methodology was supported by criteria for evaluating the effectiveness of mitigation measures in the case study approach. Findings – The EIA follow-up activities contributed to the maintenance of environmental conditions in the majority of the control points at the end of the construction phase. Water quality parameters were not statistically different before and during the construction of the highway. The choice and arrangement of mitigation measures were successful in ensuring water quality control by avoiding siltation. Practical implications – A robust scheme for designing and evaluating mitigation measures contributes to the improvement of their effectiveness and is pivotal to the success of the EIA follow-up. Originality/value – This case study serves as an example for extending EIA follow-up practice in special to the improvement of the design and evaluation of mitigation measures in similar contexts.

scholarly journals Studying the Effect of Channel Geometry on Different Water Quality Variables for Effective Designs and Waste Allocation Plans for Waterways

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2176
Author(s):  
Sherine El Baradei
Keyword(s):  
Water Quality ◽  
Inorganic Carbon ◽  
Negative Impact ◽  
Channel Length ◽  
Mitigation Measures ◽  
Total Inorganic Carbon ◽  
Reference Case ◽  
Channel Geometry ◽  
Water Quality Variables ◽  
Allocation Plans

It is necessary to study the parameters that affect water quality in order to devise mitigation measures if water quality would be at risk or negatively affected by those parameters. Those parameters are physical, chemical, biological, and hydraulic characteristics. This research will study the effect of channel geometry on different water quality variables, which is important in designing new irrigation canals in order to see how its geometry will affect water quality and lessen any negative impact if possible; also this study could aid in designing more reliable waste allocation plans for waterways. The studied geometric characteristics are top width, bottom width, water depth, side-slopes and channel length. Sheikh Zayed canal in Egypt is taken as the reference case study canal. Studied water quality variables are algae, nutrients, total dissolved solids (TDS), total suspended solids (TSS), pH, alkalinity and total inorganic carbon. It was found that concentrations of all water quality variables in water changed as a result of changing channel geometry. Some water quality variables such as algae, nutrients, and TSS are greatly affected, whereas others such as pH, alkalinity and total inorganic carbon are slightly affected.

scholarly journals Perception of tools for assessing on-farm nutrient losses and mitigation options

2021 ◽  
Author(s):  
◽  
Maggie Rogers
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Environmental Sustainability ◽  
Agricultural Land ◽  
Mitigation Measures ◽  
Nitrogen And Phosphorus ◽  
Land Use Models ◽  
On Farm ◽  
Degraded Water Quality

<p>This research focuses on the prominent issue of degraded water quality in New Zealand caused by the intensification of agricultural land use, resulting in increased levels of diffuse pollutants such as sediment, nitrogen and phosphorus in waterways (Duncan, 2017). Degraded water quality is a critical issue that needs to be addressed both socially and scientifically. It needs to be addressed socially as human behaviour is influencing this degradation, and the science is needed to further our understanding and implementation of the best mitigation solutions.  The aim of this study was to evaluate how information surrounding potential nutrient mitigation measures provided by decision support tools is understood and interpreted by farmers facing tightening environmental regulations and a changing social outlook on environmental sustainability. To achieve this aim, the following activities were conducted: (i) A review of current theories and tools available to understand and encourage pro-environmental behaviour. (ii) A case study using the Land Utilisation Capability Indicator (LUCI) model to determine stakeholder engagement was carried out through interviews with 6 farmers in the Mangatarere Catchment.  The review showed that while information alone does not drive behaviour change, it is an essential component that when used in collaboration with other methods and incentives, can be very successful (Kennedy, 2010; Mackenzie-Mohr, 2000; Stern, 2000). From this review a method that was identified as having huge potential in terms of managing water quality was the use of land use models alongside targeted on-farm advice (Bouraoui & Grizzetti, 2014).  To understand the stakeholder perception and uptake of the information this method provides a case study was carried out using the LUCI model with 6 farmers in the Mangatarere Catchment. The results showed that LUCI proved to be a valuable tool for both the case study farmers and the wider farming community. Farmer feedback highlighted the importance of ensuring that information provided by such tools is communicated in a consolidated manner. This thesis shows that land use models such as LUCI have the potential to be a beneficial method of engaging stakeholders in prominent issues such as degrading water quality.</p>

scholarly journals Perception of tools for assessing on-farm nutrient losses and mitigation options

2021 ◽  
Author(s):  
◽  
Maggie Rogers
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Environmental Sustainability ◽  
Agricultural Land ◽  
Mitigation Measures ◽  
Nitrogen And Phosphorus ◽  
Land Use Models ◽  
On Farm ◽  
Degraded Water Quality

<p>This research focuses on the prominent issue of degraded water quality in New Zealand caused by the intensification of agricultural land use, resulting in increased levels of diffuse pollutants such as sediment, nitrogen and phosphorus in waterways (Duncan, 2017). Degraded water quality is a critical issue that needs to be addressed both socially and scientifically. It needs to be addressed socially as human behaviour is influencing this degradation, and the science is needed to further our understanding and implementation of the best mitigation solutions.  The aim of this study was to evaluate how information surrounding potential nutrient mitigation measures provided by decision support tools is understood and interpreted by farmers facing tightening environmental regulations and a changing social outlook on environmental sustainability. To achieve this aim, the following activities were conducted: (i) A review of current theories and tools available to understand and encourage pro-environmental behaviour. (ii) A case study using the Land Utilisation Capability Indicator (LUCI) model to determine stakeholder engagement was carried out through interviews with 6 farmers in the Mangatarere Catchment.  The review showed that while information alone does not drive behaviour change, it is an essential component that when used in collaboration with other methods and incentives, can be very successful (Kennedy, 2010; Mackenzie-Mohr, 2000; Stern, 2000). From this review a method that was identified as having huge potential in terms of managing water quality was the use of land use models alongside targeted on-farm advice (Bouraoui & Grizzetti, 2014).  To understand the stakeholder perception and uptake of the information this method provides a case study was carried out using the LUCI model with 6 farmers in the Mangatarere Catchment. The results showed that LUCI proved to be a valuable tool for both the case study farmers and the wider farming community. Farmer feedback highlighted the importance of ensuring that information provided by such tools is communicated in a consolidated manner. This thesis shows that land use models such as LUCI have the potential to be a beneficial method of engaging stakeholders in prominent issues such as degrading water quality.</p>

scholarly journals Influence of Land Use/Land Cover on Surface-Water Quality of Santa Lucía River, Uruguay

2020 ◽  
Vol 12 (11) ◽  
pp. 4692 ◽  
Author(s):  
Angela Gorgoglione ◽  
Javier Gregorio ◽  
Agustín Ríos ◽  
Jimena Alonso ◽  
Christian Chreties ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Cluster Analysis ◽  
Surface Water ◽  
Land Cover ◽  
Winter Season ◽  
Surface Water Quality ◽  
Well Being ◽  
Land Use Land Cover ◽  
Water Quality Variables

Land use/land cover is one of the critical factors that affects surface-water quality at catchment scale. Effective mitigation strategies require an in-depth understanding of the leading causes of water pollution to improve community well-being and ecosystem health. The main aim of this study is to assess the relationship between land use/land cover and biophysical and chemical water-quality parameters in the Santa Lucía catchment (Uruguay, South America). The Santa Lucía river is the primary potable source of the country and, in the last few years, has had eutrophication issues. Several multivariate statistical analyses were adopted to accomplish the specific objectives of this study. The principal component analysis (PCA), coupled with k-means cluster analysis (CA), helped to identify a seasonal variation (fall/winter and spring/summer) of the water quality. The hierarchical cluster analysis (HCA) allowed one to classify the water-quality monitoring stations in three groups in the fall/winter season. The factor analysis (FA) with a rotation of the axis (varimax) was adopted to identify the most significant water-quality variables of the system (turbidity and flow). Finally, another PCA was run to link water-quality variables to the dominant land uses of the watershed. Strong correlations between TP and agriculture-land use, TP and livestock farming, NT and urban areas arose. It was found that these multivariate exploratory tools can provide a proper overview of the water-quality behavior in space and time and the correlations between water-quality variables and land use.

Water quality management for the Talkatora Lake, Jaipur – a case study

1999 ◽  
Vol 40 (2) ◽  
pp. 29-33
Author(s):  
Akhilendra B. Gupta ◽  
Renu Jain ◽  
Kapil Gupta
Keyword(s):  
Water Quality ◽  
Research Study ◽  
Water Quality Management ◽  
Rapid Assessment ◽  
Mitigation Measures ◽  
Lake Water Quality ◽  
Sources Of Pollution ◽  
Lake Waters

This paper describes the field-based research study undertaken to quantify the pollution, identify the sources of pollution and draw up a plan of action to restore the water quality of the Talkatora Lake located in Jaipur City, capital of Rajasthan State. Laboratory analysis of water samples at different time periods and a mass balance of the lake waters showed that the first flush of stormwater from the adjoining residential and commercial areas was a major cause of pollution in the lake. An integrated waste management strategy to limit the pollution discharged to this lake to enable self-purification was recommended. The mitigation measures were partially implemented and the results of a rapid assessment of the subsequent lake water quality are also reported.

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