Accounting for water quality effects of future urbanization: diffuse pollution loads estimates and control in Mantua's Lakes (Italy)

2003 ◽  
Vol 47 (7-8) ◽  
pp. 291-298 ◽  
Author(s):  
A.G. Capodaglio ◽  
A. Muraca ◽  
G. Becchi
Keyword(s):  
Water Quality ◽  
Industrial Area ◽  
Environmental Consideration ◽  
Development Plans ◽  
The 1960S ◽  
Substantial Decline ◽  
And Control ◽  
The City ◽  
Pollution Loads

The three shallow lakes of Mantua (Upper, Middle and Lower) formed by the Mincio River are today classified by Italian water authorities as sensitive areas, after, in the second half of the 20th century, the hydrologic regime of the lakes was heavily modified, and the influence of industrial activities operating in the 1960s - without much environmental consideration - created a substantial decline in the water quality of the lakes. The City of Mantua is one of the most vital industrial centers of Northern Italy, and development plans are under way, that should approximately double the extension of the urban and industrial area within the next 20 years. This paper deals with estimating the effects of the aforementioned urbanization on the future water quality of the three lakes.

Влияние экологического состояния водоисточника на режим работы водопроводных очистных сооружений

2020 ◽  
Author(s):  
P. Bykova ◽  
I. Egorova ◽  
A. Strelkov ◽  
L. Talovyria ◽  
O. Nesterenko ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Reservoir ◽  
Water Source ◽  
Optimal Dose ◽  
Source Water ◽  
Regulatory Requirements ◽  
Water Quality Control ◽  
Water Abstraction ◽  
The City

При изучении качества воды источника водоснабжения г. Самары Саратовского водохранилища особое внимание было уделено основным показателям, влияющим на выбор реагентной обработки: мутность, перманганатная окисляемость и цветность. Сезонные изменения качества воды водохранилища требуют постоянной корректировки дозы реагентов с целью достижения нормативных требований к качеству очищенной воды. Приводятся результаты производственных исследований изменения качества воды Саратовского водохранилища в створе водозаборов г. Самары за 20172019 годы по мутности, перманганатной окисляемости и цветности. В связи с аномальными температурными перепадами и наступлением осеннего паводка (конец декабря 2019 г. и январь 2020 г.) резко изменилось качество воды водохранилища по цветности и перманганатной окисляемости. Отмечено, что увеличение указанных показателей потребовало повышения дозы реагентов при очистке исходной воды. Оптимальная доза реагентов постоянно коректируется в зависимости от состава исходной воды на флокуляторе Lovibond ЕТ-750 . Регулярное проведение пробного коагулирования позволило поддерживать качество очищенной воды в соответствии с нормативными требованиями СанПиН 2.1.4.1074-01 Питьевая вода. Контроль качества , кроме цветности и железа общего, так как превышение этих показателей наблюдалось в пределах погрешности методов измерения.While studying the water quality of the water source of the city of Samara the Saratov water reservoir, special attention was paid to the main indicators that influence the choice of chemical treatment: turbidity, permanganate index and color. Seasonal changes in the water quality of the water reservoir require constant adjustment of the chemical dose in order to meet the regulatory requirements to the quality of treated water. The results of the studies of changes in the water quality of the Saratov reservoir at the water abstraction points of the city of Samara for 20172019 by turbidity, permanganate index and color are presented. Due to the abnormal temperature differences and onset of autumn flood (end of December 2019 and January 2020), the water quality in the water reservoir dramatically changed in color and permanganate index. It was noted that an increase in these indicators required an increase in the dose of chemicals during the source water purification. The optimal dose of chemicals is selected with Lovibond ET-750 flocculator depending on the composition of the source water. Regular test coagulation allowed maintaining the quality of purified water in accordance with the regulatory requirements of SanPiN 2.1.4.1074-01 Drinking water. Quality control , except for color and total iron since the values of these indicators were increased within the measurement accuracy.

Deterioration in the Water Quality of Groundwater in Some Municipal Water Extraction Plants in Finland

1979 ◽  
Vol 10 (2-3) ◽  
pp. 171-190
Author(s):  
Pertti Lahermo ◽  
Jouko Parviainen
Keyword(s):  
Water Quality ◽  
Urban Areas ◽  
Water Extraction ◽  
Groundwater Extraction ◽  
Dissolved Solids ◽  
Municipal Water ◽  
The 1960S

In this study the changes in the quality of groundwater are described on the basis of material collected at some groundwater extraction plants situated mainly in urban areas. The causes of the marked increase in the content of dissolved solids are evaluated from the 1960s onwards.

scholarly journals Impact of Changes in Land Use and Land Cover in the Contribution Basin of Doutor João Penido Water Supply Reservoir of Juiz de Fora, MG, Brazil

2021 ◽  
Vol 11 (1) ◽  
pp. 108
Author(s):  
Juliana Nazareth de Lana ◽  
Márcio de Oliveira ◽  
Vanessa Romario de Paula ◽  
Cézar Henrique Barra Rocha
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Land Cover ◽  
Water Supply ◽  
Quality Parameters ◽  
E Coli ◽  
The City ◽  
Water Supply Reservoirs ◽  
Limnological Parameters

Changes in the land use and land cover in areas adjacent to water reservoirs directly affect the quality of this water. This research presents a study on the water quality in the basin of one of the most important public water supply reservoirs in the city of Juiz de Fora, Minas Gerais. The main objective of this study was to analyze the behavior of limnological parameters and the correlation with land use and land cover in the contribution basin of the Doutor João Penido reservoir (CBJPR). The methodology was based on the analysis of water quality parameters, related to water samples collected from 2012 to 2015. Six sampling points were chosen from different locations: spring, medium course, main tributaries of the reservoir and the reservoir catchment. The parameters analyzed were turbidity, total solids (TS), oxygen consumed (OC), dissolved oxygen (DO), electrical conductivity, total nitrogen (TN), total phosphorus (TP), E. Coli, temperature, pH and total dissolved solids (TDS). The Kendall’s tau test was used to analyze the correlations between the parameters of water quality, land use and land cover in the CBJPR. In general, measured parameters showed better results in spring and in reservoir catchment, showing a worse quality of the water along the tributaries and the dilution power of the reservoir. The correlations pointed to the need for protection and preservation of forests in strategic locations to ensure good water quality.

PROBLEMS OF WATER SUPPLY IN THE TERRITORY OF THE OREL REGION AND WAYS TO SOLVE IT

2021 ◽  
Author(s):  
Павел Алексеевич Лапин ◽  
Сергей Александрович Копылов ◽  
Дмитрий Васильевич Елисеев
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
The State ◽  
Quality Of Water ◽  
The City

В статье анализируется состояние водного фонда в области и обеспеченность жителей региона водой. Рассматриваются основные проблемы неудовлетворительного качества воды в районах области и в г. Орле. Предлагается комплекс мероприятий с целью повышение качества водоснабжения на территории Орловской области путём строительства пяти объектов водоснабжения. The article analyzes the state of the water fund in the region and the provision of water to the residents of the region. The main problems of unsatisfactory water quality in the districts of the region and in the city of Orel are considered. A set of measures is proposed to improve the quality of water supply in the territory of the Orel region through the construction of five water supply facilities.

REGENERATION OF A DECAYING URBAN INDUSTRIAL AREA DRIVEN BY ENDOGENOUS HOME INDUSTRIES: A CASE STUDY OF MARÉ FAVELA, RIO DE JANEIRO

2021 ◽  
Vol 16 (2) ◽  
pp. 237-248
Author(s):  
Shanshan Wu ◽  
Hao Li
Keyword(s):  
Urban Communities ◽  
Low Income ◽  
Rio De Janeiro ◽  
Industrial Area ◽  
Production Model ◽  
Home Production ◽  
Home Industries ◽  
The City

ABSTRACT Favelas are low-income urban communities in Brazil, and Maré in Rio de Janeiro has the largest cluster of favelas in the country. The prevailing view of a unique, regulated, and normative city conflicts with the reality of the continued expansion of the favelas, posing challenges for architects and urban planners in developing new strategies for integrating informal areas with the main city. This study focused on a decaying industrial area adjacent to the Maré favelas and explored a sustainable path for improving both the quality of the built environment and the quality of life of the residents. Effective infrastructure and socioeconomic links between the favelas and the city were proposed. The home production model that emerged from the favelas inspired the use of the abandoned industrial area as a home-industry incubator. The study proposed an urban regeneration strategy involving a bottom-up industry-space process evolving from home industries to group industries, and finally to larger community industries. This strategy can accelerate Maré’s development and integration with the city of Rio de Janeiro.

scholarly journals Water quality of Narai canal and Balu river of Dhaka City: An impact of industrialization

2016 ◽  
Vol 12 (2) ◽  
pp. 285-290 ◽  
Author(s):  
S Roy ◽  
LN Banna ◽  
M Hossain ◽  
H Rahman
Keyword(s):  
Water Quality ◽  
Quality Parameter ◽  
Parameter Analysis ◽  
Effluent Treatment ◽  
Water Quality Parameter ◽  
Domestic Water ◽  
Environmental Consideration ◽  
Rapid Industrialization ◽  
Standard Limit

Rapid industrialization around riverside without having proper environmental consideration causes severe water pollution in our country. On accordance with the consecution of this problem the study was conducted to investigate the water quality of Narai canal and Balu river during January to June, 2012. Water quality parameter analysis i.e. color, odor, pH, total dissolved solids (TDS), dissolved oxygen (DO), ammonium (NH4) results show that except pH all exceeded standard limit for domestic water use, irrigation and fish cultivation. The minimum and maximum values of pH, TDS, DO and NH4 were 6.89-7.33, 982-1308 ppm, 0.33-2.12 ppm and 6.79-89.76 ppm, respectively. Present analysis with secondary research data also revealed that this pollution rate is becoming intensified quickly which may pose a great threat in future for human health, ecosystem and sustainable agricultural production. So, Effluent Treatment Plants (ETP) is urgently needed to minimize the concentration of pollutants and ultimately to save the river water of the concerned area.J. Bangladesh Agril. Univ. 12(2): 285-290, December 2014

scholarly journals Characteristics and Mechanism of the Environmental Capacity Changes in Haizhou Bay, Northern Jiangsu, China from 2006 to 2016

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2990
Author(s):  
Lei Sun ◽  
Jing Wang ◽  
Haifeng Zhang ◽  
Min Xu
Keyword(s):  
Water Quality ◽  
Influencing Factor ◽  
Coastal Development ◽  
Future Research ◽  
Environmental Capacity ◽  
Haizhou Bay ◽  
Influencing Mechanism ◽  
Sea Reclamation ◽  
And Control

Haizhou Bay is an open bay located in northern Jiangsu Province, China. This study analyzes the changes in the coastline, coastal development, and water quality of Haizhou Bay between 2006 and 2016. The box model method and numerical simulation are adopted to calculate the environmental capacities of Haizhou Bay in 2006 and 2016, analyze changes to environmental capacity features, and assess the influencing factors over this period. The scenario analysis method is used to discuss the influencing mechanism and degree of influence of factors (e.g., the water quality difference inside and outside the bay, and sea reclamation) on the environmental capacity and calculate the contribution of each influencing factor. The changes in terrain triggered by sea reclamation and water quality from 2006 to 2016 reduced the total environmental capacity of Haizhou Bay, with an influencing ratio of 0.198:0.802. In other words, poorer water quality inside the bay reduces the environmental capacity by a degree of 4.05 times that of sea reclamation. This study can offer guidance on related future research aiming to protect the marine environment of Haizhou Bay and control the total amount of pollutants discharged into the sea.

scholarly journals Oil and Grease as a Water Quality Index Parameter for the Conservation of Marine Biota

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 856 ◽  
Author(s):  
Mónica Eljaiek-Urzola ◽  
Nora Romero-Sierra ◽  
Laura Segrera-Cabarcas ◽  
David Valdelamar-Martínez ◽  
Édgar Quiñones-Bolaños
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Physicochemical Characteristics ◽  
Marine Biota ◽  
Oil And Grease ◽  
Tropical Areas ◽  
The City ◽  
Quality Indexes

Water quality indexes are a tool used to evaluate the physicochemical characteristics of a water body according to its use. The present study proposes the inclusion of oil and grease (OG) as a new water quality index (ICAMPFF-GA) parameter for the preservation of marine biota in tropical areas, since it is a typical pollutant found and measured in water bodies, causing damage to the aquatic environment. The normalized curve for OG was defined based on the percentage of surviving microorganism under a lethal concentration exposure of OG. The ICAMPFF-GA suitability was evaluated by its application to analyze marine water quality in the area of the sea outfall in the city of Cartagena, Colombia and comparing the trends of the outfall flow and the rainfall for 2017. Physical chemical data analyzed for the year 2017 shows that OG varies from 0.0 to 3.8 mg/L. The results show that the water quality index increases when rainfall and flow values increase for the rainy season. The ICAMPFF-GA can be a tool to evaluate the water quality of marine waters affected by the discharge of waters with oil and grease.

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