scholarly journals Determination of dilution factors for discharge of aluminum-containing wastes by public water-supply treatment facilities into lakes and reservoirs in Massachusetts

2016 ◽  
Author(s):  
John A. Colman ◽  
Andrew J. Massey ◽  
Sara L. Brandt
Keyword(s):  
Water Supply ◽  
Public Water Supply ◽  
Lakes And Reservoirs ◽  
Treatment Facilities

Initiatives for utilizing renewable energy in water supply treatment

2016 ◽  
Vol 11 (2) ◽  
pp. 365-372
Author(s):  
Takashi Kobayashi
Keyword(s):  
Renewable Energy ◽  
Control System ◽  
Water Treatment ◽  
Power Consumption ◽  
Water Supply ◽  
Supply System ◽  
Public Water Supply ◽  
Hydropower Generation ◽  
Treatment Facilities ◽  
System Power

Maintaining a safe and reliable public water supply uses massive amounts of energy, prompting calls for energy saving measures. The Yokohama Water Works Bureau has established the goal of building a water supply system that is environmentally friendly by implementing a variety of initiatives, starting with efforts in renewable energy. These efforts have featured installing solar power and micro hydropower generation facilities at our purification plants and distribution reservoirs. The Yokohama water treatment facilities include purification plants based on gravity systems (Nishiya and Kawai plants) and pumped systems (Kosuzume plant). As the purification plants employing gravity systems place a smaller load on the environment, we use them as effectively as we can. When it was time to refurbish the distribution pumps, we reviewed the pump control system and identified initiatives for reducing pumped system power consumption.

Алгоритм оценки степени физического износа структурно сложных объектов ВКХ с применением риск-ориентированного подхода

2019 ◽  
pp. 45-49
Author(s):  
V. Grachev ◽  
N. Kurysheva ◽  
O. Plyamina ◽  
V. Lobkovskiy ◽  
E. Nefedova
Keyword(s):  
Water Supply ◽  
Preventive Measures ◽  
Public Water Supply ◽  
Negative Consequences ◽  
Regulatory Documents ◽  
Physical Deterioration ◽  
Indicator Framework ◽  
Sanitation Systems ◽  
Assessment Procedures ◽  
Water Supply And Sanitation

Проведенный анализ современных нормативноправовых документов и практики оценки физического износа структурно сложных объектов водопроводноканализационного хозяйства показал, что современные методы оценки не учитывают особенности этих объектов. Выявлены факторы, влияющие на структуру показателей оценки физического износа по основным группам и элементам объектов водопроводноканализационного хозяйства. На их основе разработан алгоритм оценки физического износа объектов с применением рискориентированного подхода для трех уровней: объект, технологические элементы объекта (сооружения), функциональные элементы в составе сооружений (здания, оборудование). Использование алгоритма позволяет разработать рекомендации по корректировке периодичности и частоте проведения мониторинга показателей уровня физического износа объектов централизованных систем водоснабжения и водоотведения и их элементов. Практическое применение разработанного алгоритма будет способствовать внедрению современных подходов по управлению рисками, связанными с уровнем физического износа и оценкой вероятности потенциальных негативных последствий природного, антропогенного и другого характера. Внедрение алгоритма позволит также устанавливать уязвимые области и проводить предупредительные мероприятия в отношении возникновения угрозы нарушения обязательных требований, в том числе меры по снижению рисков (техникотехнологическое обновление зданий, сооружений, оборудования). Это необходимо для объективного и обоснованного планирования капитального ремонта, восстановления и развития объектов водопроводноканализационного хозяйства и их элементов.The paper analyzes current regulatory documents and experience in the field of assessing the deterioration of structurally complex water supply and sanitation facilities. The paper shows that modern assessment procedures do not take into account any features of such objects. The paper identifies factors that affect the indicator framework for assessing the physical deterioration of the main groups and components of water supply and sanitation facilities. Based on these factors, the paper proposes an algorithm for assessing the physical deterioration of facilities using a riskoriented approach for three levels: an object itself, its engineering components (facilities), and their functional elements (buildings, equipment). The paper indicates that the use of the algorithm would provide for developing recommendations for adjusting the frequency of monitoring indicators of the physical deterioration level of facilities of public water supply and sanitation systems and their elements. The implementation of the developed algorithm would contribute to the successful introduction of advanced approaches to managing risks associated with the level of physical deterioration and assessing the probability of potential negative consequences of natural, anthropogenic, and other origins. The introduction of the algorithm would also allow identifying vulnerable areas and taking preventive measures against the threat of violation of mandatory requirements including measures for reducing risks (technical and engineering renovation of buildings, facilities, equipment). This is required for objective and substantiated planning of overhaul, restoration, and development of water supply and sanitation facilities and their components.

An investigation into the possible links between shigellosis and hepatitis A and public water supply disconnections

Public Health ◽  
1997 ◽  
Vol 111 (3) ◽  
pp. 179-181
Author(s):  
L Fewtrell ◽  
D Kay ◽  
M Wyer ◽  
G O’Neill
Keyword(s):  
Water Supply ◽  
Hepatitis A ◽  
Public Water Supply

scholarly journals Outbreak of Cryptosporidiosis after Contamination of the Public Water Supply in Saitama Prefecture, Japan, in 1996

2000 ◽  
Vol 74 (6) ◽  
pp. 518-526 ◽  
Author(s):  
Norishige YAMAMOTO ◽  
Ken-ichi URABE ◽  
Masatoshi TAKAOKA ◽  
Kiyoaki NAKAZAWA ◽  
Atsushi GOTOH ◽  
...  
Keyword(s):  
Water Supply ◽  
Public Water Supply ◽  
The Public

The Socio-economic and General Profile of Organized and Traditional Goat Farmers in Punjab

2021 ◽  
Keyword(s):  
Water Supply ◽  
Farming Systems ◽  
Total Sample ◽  
Education Level ◽  
Public Water Supply ◽  
Nuclear Families ◽  
Tube Well ◽  
The Village ◽  
General Profile ◽  
Goat Farming

The present study was conducted Bathinda, Fazilka, and Muktsar of Punjab to examine the socio-economic and general profile of goat farmers, studying a total sample of 88 goat farmers. Both types of goat farming systems, organized goat farms, and traditional goat farms, were studied with more emphasis on organized goat farms. The sample farmers consisted of 56 organized and 32 traditional goat farmers in the state. It was observed in the study that the education level of organized goat farmers was better compared to traditional goat farmers. A majority of the sample goat farmers had nuclear families. A majority of the farmers (53.57 percent) had goat farms located in the village. Organized goat farms had tube-well as the main source of water supply, whereas traditional goat farms were mainly dependent upon public water supply. Organized goat farmers had relatively higher exposure to training. A vast majority of the goat farmers had their breeding buck.

scholarly journals Fluoridation of the public water supply and prevalence of dental fluorosis in a peripheral district of the municipality of Bauru, SP

2006 ◽  
Vol 14 (2) ◽  
pp. 136-141 ◽  
Author(s):  
Irene Ramires ◽  
Kelly Polido Kaneshiro Olympio ◽  
Andréa Gutierrez Maria ◽  
Juliano Pelim Pessan ◽  
Vanessa Eid Silva Cardoso ◽  
...  
Keyword(s):  
Water Supply ◽  
Water Samples ◽  
Dental Fluorosis ◽  
Fluoride Concentration ◽  
Epidemiological Survey ◽  
Public Water Supply ◽  
Prior Authorization ◽  
The Public ◽  
Electrode Method ◽  
Sensitive Electrode

OBJECTIVES: The objectives of this study were to assess the fluoride concentration in the public water supply and the prevalence of dental fluorosis in schoolchildren between 7 and 15 years old, living in a peripheral district of the municipality of Bauru. MATERIAL AND METHODS: For this, fifty two water samples were collected on three different days of one week. These samples were analyzed for fluoride by means of the ion-sensitive electrode method (Orion 9609) coupled to a potentiometer (Procyon, model 720). In this method, 1.0 mL of TISAB II (Orion) was added to 1.0 mL of the sample. For the epidemiological survey of fluorosis, 52 schoolchildren of both genders, aged between 7 and 15 were assessed, with prior authorization from their caretakers. Only one person examined the children, after supervised toothbrushing and drying with cotton wool rolls. The TF index was used. RESULTS: The fluoride concentrations in the water samples ranged from 0.62 to 1.20 mg/L, with a mean of 0.9 mg/L. The prevalence of dental fluorosis was 33%, with severity ranging from TF1 to TF4 (Kappa of 0.73 and concordance of 83.33%). CONCLUSIONS: The results from the analysis of water samples indicated a fluoride concentration greater than recommended for Bauru. The fluorosis levels found were higher than expected for a peripheral district, in which water is one of the few sources of fluoride.

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