scholarly journals Research on the effectiveness of individual infiltration devices

2018 ◽  
Vol 45 ◽  
pp. 00091
Author(s):  
Ewa Suchanek-Gabzdyl ◽  
Maciej Mrowiec
Keyword(s):  
Management Systems ◽  
Water Runoff ◽  
Negative Effects ◽  
Urbanization Process ◽  
Urban Catchment ◽  
Quality Of Water ◽  
Rainwater Management ◽  
Technical Solutions ◽  
Impervious Areas

The increasing urbanization process in Europe has resulted in an increase in the proportion of impervious areas in the development of watersheds. This fact, combined with the more frequent occurrence of volatile rainfall, contributes to the formation of high intensity surface runoff, which results in local flooding of the lowest located areas. Water runoff also causes a large amount of pollution from the catchment to be flushed away and transported to the receiver, which generates many negative effects on the environment. Due to these unfavorable changes in the urban catchment, it is necessary to manage the waters in accordance with the principles of sustainable development. One of the basic tools to protect the quantity and quality of water discharged from the catchment area is to take into account the need to implement technical solutions to increase the retention of rainwater in cities. Such solutions, consisting of designing natural rainwater management systems, could work independently or in cooperation with traditional rainwater drainage systems [1].

scholarly journals The Establishment of Experimental Green Roofs

2018 ◽  
Vol 66 (1) ◽  
pp. 43-48
Author(s):  
Věra Hubačíková ◽  
Lenka Filipová ◽  
Petr Pelikán
Keyword(s):  
Green Roofs ◽  
Water Runoff ◽  
University Campus ◽  
Retention Efficiency ◽  
Quality Of Water ◽  
Significant Difference ◽  
Different Types ◽  
Rainwater Management ◽  
Experimental Plots

The aim of the work was establishment of research green roofs on Mendel University in Brno. The experimental green roofs were established in August 2015 and it is based on current issues of rainwater management and the quality of storm water launched into recipients or sewage system. There is a valid legislation addressing the management of rainwater in environment – decree no. 268/2009, Coll., and decree no. 269/2009, Coll. Four experimental plots were created and placed in Mendel University Campus. It was hypothesized that different types of experimental plots will result in different amount of retained water and in different quality of water runoff. Resulting hypotheses proved statistically significant difference between the height of rainfall and runoff height on individual types of green roofs. In addition, it was shown that the different types of roofs prove statistically significant difference in the ability to reduce runoff (retention efficiency).

scholarly journals The Influence of Sedimentation Ponds of the Former Soda “Solvay” Plant in Krakow on the Chemistry of the Wilga River

2021 ◽  
Vol 13 (2) ◽  
pp. 993
Author(s):  
Justyna Likus-Cieślik ◽  
Marcin Pietrzykowski
Keyword(s):  
Urban Areas ◽  
Surface Water Quality ◽  
River Ecosystem ◽  
Water Quality Standards ◽  
High Concentration ◽  
Negative Effects ◽  
Waste Production ◽  
Quality Of Water

This paper explores how the chemistry of the Wilga River is affected by the sedimentation ponds at the former Soda “Solvay” Plant in Krakow. Despite the revitalization of the sedimentation ponds about 30 years ago, the chemistry of the samples was characterized by high EC (from 845 to 3000 µS cm−1), high concentration of Cl− (up to 800 mg L−1), Ca (up to 270 mg L−1), and SO42− (up to 115 mg L−1), and a high value for Na (up to 270 mg L−1) was noted—surface water quality standards were exceeded. The effect of high mineralization by those elements, generated in wastewater during soda waste production, were noted to have seasonal and vertical variability. We concluded that, despite the industrial shutdown and revitalization processes, the drainage of industrial water can have serious and long-term negative effects on quality of water and the Wilga River ecosystem. The Wilga River is one of the most important examples of important environmental problems in urban areas.

scholarly journals Co-design of experimental nature-based solutions for decentralized dry-weather runoff treatment retrofitted in a densely urbanized area in Central America

AMBIO ◽  
2021 ◽  
Author(s):  
Maria Pérez Rubi ◽  
Jochen Hack
Keyword(s):  
Latin America ◽  
Urban Areas ◽  
Sustainable Management ◽  
Urban Runoff ◽  
Ecosystem Integrity ◽  
Representative Study ◽  
Quality Of Water ◽  
Drainage Networks ◽  
Technical Solutions

AbstractThe quality of water in many urban rivers in Latin America is increasingly degrading due to wastewater and runoff discharges from urban sprawl. Due to deficits in sanitary drainage systems, greywater is discharged to the stormwater drainage network generating a continuous dry-weather runoff that reaches rivers without treatment. One of the main challenges in the region is to achieve sustainable management of urban runoff for the recovery of rivers ecosystem integrity. However, retrofitting conventional centralized wastewater drainage networks into the existing urban grid represents important social, economic and technical challenges. This paper presents an alternative adaptive methodology for the design of Nature-based Solutions for decentralized urban runoff treatment. Through this study, technical solutions commonly used for stormwater management were adapted for dry-weather runoff treatment and co-designed for the particular conditions of a representative study area, considering space availability as the main constraining factor for retrofitting in urban areas. The application of a co-design process in a dense neighbourhood of the Great Metropolitan area of Costa Rica brought to light valuable insights about conditions that could be hindering the implementation of NBS infrastructures in Latin America.

Response of Turf and Quality of Water Runoff to Manure and Fertilizer

2002 ◽  
Vol 31 (4) ◽  
pp. 1316-1322 ◽  
Author(s):  
J.E. Gaudreau ◽  
D.M. Vietor ◽  
R.H. White ◽  
T.L. Provin ◽  
C.L. Munster
Keyword(s):  
Water Runoff ◽  
Quality Of Water

scholarly journals The presence of heavy metals in water and the muscle tissue of grayling (Thymallus thymallus) of the Una River

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
Azra Bakrač ◽  
Subha Džafić ◽  
Radoslav Dekić ◽  
Irma Ičanović
Keyword(s):  
Heavy Metals ◽  
Electrical Conductivity ◽  
Suspended Matter ◽  
Natural Habitat ◽  
Mineral Matter ◽  
Negative Effects ◽  
Thymallus Thymallus ◽  
Quality Of Water ◽  
Fish Samples

Heavy metals belong to a group of substances, which, after reaching a natural habitat, can manifest various negative effects. This paper analyses heavy metals (Cu, Cd, and Pb) in the Una river and fish samples, whereby individuals of grayling (Thymallus thymallus) were used for analysis. The samples were taken at three locations at the Una river: Ripač, Hatinac, and Grmuša. Alongside with the examination of the content of heavy metals, quality of water was tracked, including the following parameters: temperature, pH, electrical conductivity, dissolved oxygen, suspended matter, BPK5, KPK – Cr, total nitrogen – N, total phosphorus P, sulphates, chlorides, nitrites – NO2, nitrates – NO3, fluoride, and heavy metals (Cu, Cd, and Pb). Besides the content of heavy metals, proteins, fats, water, carbohydrates, and mineral matter were found in the grayling fillets. Amount of heavy metals (Pb, Cu, and Cd) were under maximum allowed concentration (MAC).

scholarly journals METHOD FOR ASSESSMENT AND ANALYSIS OF ANTHROPOGENIC LOAD ON RIVERS FROM POINT POLLUTION SOURCES

2021 ◽  
Vol 23 (5) ◽  
pp. 135-143
Author(s):  
V.A. Seleznev ◽  
Keyword(s):  
Water Resources ◽  
Negative Impact ◽  
Climatic Conditions ◽  
Anthropogenic Load ◽  
Water Runoff ◽  
Natural Zones ◽  
Quality Of Water ◽  
Wide Range ◽  
Calculation Results

Wastewater discharge into rivers has a negative impact on the quality of water resources. The existing methods for assessing the anthropogenic load from the discharge of wastewater into rivers do not allow one to compare and rank according to the degree of load rivers that differ in the size of the catchment area and are located in different natural zones. The author has developed a method for assessing and analyzing the anthropogenic load on rivers from the discharge of pollutants, which takes into account the water content of rivers and basin features of the formation of the quality of water resources. The proposed method makes it possible to determine the integral and differentiated loads for priority pollutants. It allows you to decompose the load into separate components (nitrogen, phosphoric, sulfate, chloride, etc.), to standardize the load taking into account the quality of river waters and to assess the priority of specific pollutants. This method has been tested on 12 rivers in Russia located in different natural and climatic conditions and having a wide range of water runoff values from 10 to 600 km3 / year. The calculation results showed that p. The Volga is experiencing the greatest anthropogenic load from the discharge of pollutants in wastewater. Therefore, first of all for the river. On the Volga, it is necessary to develop a basin program for the gradual reduction of anthropogenic load and mechanisms for its implementation

Can trust become a factor of economic growth? Dynamic changes in the level of trust of Russian youth

2020 ◽  
pp. 92-107 ◽  
Author(s):  
A. I. Bakhtigaraeva ◽  
A. A. Stavinskaya
Keyword(s):  
Institutional Environment ◽  
Negative Effects ◽  
Dynamic Changes ◽  
Generalized Trust ◽  
Level Of Education ◽  
Advantages And Disadvantages ◽  
The Future ◽  
Analysis Of Dynamics

The article considers the role of trust in the economy, the mechanisms of its accumulation and the possibility of using it as one of the growth factors in the future. The advantages and disadvantages of measuring the level of generalized trust using two alternative questions — about trusting people in general and trusting strangers — are analyzed. The results of the analysis of dynamics of the level of generalized trust among Russian youth, obtained within the study of the Institute for National Projects in 10 regions of Russia, are presented. It is shown that there are no significant changes in trust in people in general during the study at university. At the same time, the level of trust in strangers falls, which can negatively affect the level of trust in the country as a whole, and as a result have negative effects on the development of the economy in the future. Possible causes of the observed trends and the role of universities are discussed. Also the question about the connection between the level of education and generalized trust in countries with different quality of the institutional environment is raised.

Reflecting the Sky in Water

2017 ◽  
Vol 3 (1) ◽  
pp. 112-126 ◽  
Author(s):  
Ilaria Cristofaro
Keyword(s):  
The Unconscious ◽  
Related Case ◽  
Quality Of Water ◽  
Fluid Properties ◽  
Phenomenological Perspective ◽  
Auto Ethnography ◽  
The Individual ◽  
Artificial Water ◽  
Land Water

From a phenomenological perspective, the reflective quality of water has a visually dramatic impact, especially when combined with the light of celestial phenomena. However, the possible presence of water as a means for reflecting the sky is often undervalued when interpreting archaeoastronomical sites. From artificial water spaces, such as ditches, huacas and wells to natural ones such as rivers, lakes and puddles, water spaces add a layer of interacting reflections to landscapes. In the cosmological understanding of skyscapes and waterscapes, a cross-cultural metaphorical association between water spaces and the underworld is often revealed. In this research, water-skyscapes are explored through the practice of auto-ethnography and reflexive phenomenology. The mirroring of the sky in water opens up themes such as the continuity, delimitation and manipulation of sky phenomena on land: water spaces act as a continuation of the sky on earth; depending on water spaces’ spatial extension, selected celestial phenomena can be periodically reflected within architectures, so as to make the heavenly dimension easily accessible and a possible object of manipulation. Water-skyscapes appear as specular worlds, where water spaces are assumed to be doorways to the inner reality of the unconscious. The fluid properties of water have the visual effect of dissipating borders, of merging shapes, and, therefore, of dissolving identities; in the inner landscape, this process may represent symbolic death experiences and rituals of initiation, where the annihilation of the individual allows the creative process of a new life cycle. These contextually generalisable results aim to inspire new perspectives on sky-and-water related case studies and give value to the practice of reflexive phenomenology as crucial method of research.

Chất lượng nước ở Bắc Bình dựa trên các kết quả phân tích hóa học và vi sinh

2018 ◽  
Vol 28 (4) ◽  
pp. 484-497
Author(s):  
Phan Thị Kim Văn ◽  
Bùi Trần Vượng
Keyword(s):  
Quality Of Water ◽  
Microbiological Analyses

The quality of water in Bac Binh according to chemical and microbiological analyses

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