scholarly journals Análise da operação de um subsistema do sistema de abastecimento de água de Campina Grande-PB

2019 ◽  
Vol 1 (45) ◽  
pp. 180
Author(s):  
Kennedy Lucena ◽  
Fábio Gomes Do Nascimento
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Water Distribution ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Hydraulic Modeling ◽  
Physical Structure ◽  
Supply System ◽  
Water Supply Systems ◽  
Operational Diagnosis

Water supply systems represent one of the main components of municipal infrastructure. The operation of these systems is a complex task due to the several variables that interfere with the water distribution dynamics. The objective of the work was to obtain a diagnosis of the operation of part of the water supply system of Campina Grande and to find the main limitations and potentialities of the system infrastructure. The system supplies water to several municipalities, serving an urban and a rural population of more than 500,000 inhabitants. For the operational diagnosis, hydraulic modeling was done using the Epanet 2 simulator. The operation was modeled from the water treatment plant to the pressure zone 2 of the Campina Grande system. Cadastral surveys of the water network were carried out, field surveys and interviews with the operators. Based on the scenarios analyzed it was possible to conclude that zone 2 of the supply system has little margin for increase demand , around 10%, that the system can not work outside the peak hours and the energy cost is mainly generated by the station of water treatment. In order to improve the vulnerability reduction operation, investments are required in the physical structure of the system and in monitoring and automation.

scholarly journals Addressing the challenges in projects of water treatment plants and storage of potable water: a case studies of the water supply system in the state of Goiás, Brazil

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Anne Louise de Melo Dores ◽  
Felipe Corrêa Veloso dos Santos
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Water System ◽  
Treatment Phase ◽  
Water Treatment Plant ◽  
Operating Efficiency ◽  
Water Supply Systems ◽  
Storage Tanks ◽  
Variation Curve

AbstractTo elaborate efficient and economical water supply systems is one of the main objectives in the sanitation companies water system projects. In order to address the challenges faced in reaching this objective, this study aims to identify, first, the relation between the percentage of non-conformed samples in treated water and the inefficiency of the filtering units installed in the water treatment plant, and second, if, by drawing the consumption variation curve it is the most efficient way to predict the storage tanks volume—comparing necessary capacity, determined by the consumption curve, and installed capacity, predict by the outdated Brazilian normative. In order to reach answers for these two questions, this study measured the operating efficiency of the treatment plant as well as have set a quantitative comparison between the two dimensioning criteria for storage tanks volume present in the literature. As a result, the analysis provided the authors to detect a focus of contamination in the single-layered filtering units, limited by the filtering capacity of 2–6 m3/(m2 day), whilst operating at 333.13 m3/(m2 day). As well as to detect by the drawing of the consumption variation curve an oversize of 68% and 60% in the dimensioning of the studied storage tanks. With the results provided by this analysis approach, it was possible to efficiently detect and correct critical impairments in the treatment phase and to conclude that a long-term analysis should be drawn in order to affirm if the consumption variation curve is the best design methodology for the reservoirs.

scholarly journals HISTORY OF DEVELOPMENT OF SAMARA WATER PIPES

2018 ◽  
Vol 8 (4) ◽  
pp. 37-43
Author(s):  
Alexander K. STRELKOV ◽  
SvetlanaYu. Yur'evna TEPLYKH ◽  
Pavel A. GORSHKALEV ◽  
Anastasiya A. TEPLYKH
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Supply System ◽  
Water Supply System ◽  
Historical Background ◽  
History Of ◽  
Pipeline Project ◽  
Water Pipeline

The article shows the history of the development of water supply in Samara. The main stages of the development of the Samara water pipeline, starting from 1885 (creation of the fi rst water pipeline project) to 2011 (completion of construction and commissioning of an ultraviolet water treatment plant), are presented. The historical background of the creation of the Samara water pipeline project and the construction of the water supply system is given. It is told about the need for continuous expansion and improvement of the water supply system, as a result of which city water treatment plants, pumping and fi ltering stations, pumping stations of the second and third lifting, as well as new water lines were built. It is concluded that the construction of the Samara water pipeline is due to the rapidly growing number of residents and the developing industry in the city.

scholarly journals Ozone water treatment in small water purification plants in Poland – Mszana Dolna case study

2019 ◽  
Vol 86 ◽  
pp. 00029
Author(s):  
Jan Pawełek ◽  
Tomasz Bergel
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Unit Cost ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Supply Systems ◽  
Water Production ◽  
Small Water ◽  
Filtration System ◽  
Hydraulic Load

The study analyzed possibilities of using ozone for water treatment in supply stations that provide water to small water supply systems. We analyzed a containerized water treatment plant (CWTP) in Mszana Dolna, located in Małopolska region, with a nominal production of 15 m3∙h-1. The plant uses a two step pressure filtration system with indirect water ozonation prior to active carbon filters. The treated water meets all the requirements set for drinking water. A cost analysis was also carried out to find out whether using this type of technology in small water supply stations in Poland is economically justified. The calculations were based on water production and its costs in 2017. The unit cost of water amounted to 0.59 and 0.77 EUR∙m3 for the variant taking into account a nominal water production and a hydraulic load of the station in 2017 that reached 58.7% f a nominal load.

scholarly journals Analysis of chemical stability of tap water in terms of required level of technological safety

2017 ◽  
Vol 43 (4) ◽  
pp. 3-12 ◽  
Author(s):  
Katarzyna Pietrucha-Urbanik ◽  
Barbara Tchórzewska-Cieślak ◽  
Dorota Papciak ◽  
Izabela Skrzypczak
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Chemical Stability ◽  
Distribution System ◽  
Distribution Systems ◽  
Water Distribution ◽  
Tap Water ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Corrosion Properties

AbstractThe main goal of this work is to show the new approach to determining safety technological levels (SLs) in terms of water quality and its chemical stability, as well as issues of water corrosion properties in water distribution systems (WDSs), due to the fact that water supply pipes are prone to corrosion. In the paper the methodology of determining the risk associated with threat to technical infrastructure was considered. The concept was studied on the basis of real operational data from the water treatment plant. The probability of exceeding the individual parameters for WTPI is slightly larger than for WTPII, which means that this water treatment process may cause lack of chemical stability in the water supply network. Operators should anticipate in the process of designing water distribution system, using proper materials, as to ensure an adequate level of safety from the water source to the water recipient. It should be noted that it is necessary to adjust the material of internal installation of water supply networks to the parameters of the water. At present, there are no correlations between the designing step and water parameters. It was concluded that to protect the water supply infrastructure, which belongs to critical infrastructure, water company should put more emphasis on distribution of stable water that has not potentially corrosion properties. Some suggestions were made for the protection of WDS and to ensure safety of system functioning and long-term usability of water pipes.

Technical auditing of water supply systems – part 2: water treatment plant

2017 ◽  
Vol 18 (4) ◽  
pp. 1141-1150
Author(s):  
Tomáš Kučera ◽  
Ladislav Tuhovčák ◽  
Renata Biela
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Supply Systems ◽  
Supply Systems

scholarly journals Water Supply System Description and Risk Assessment in Brikama Water Treatment Plant System, West Coast Region, Gambia: WHO Water Safety Plan Based Approach

2021 ◽  
pp. 7-19
Author(s):  
Amadou Barrow ◽  
Baboucarr Corr ◽  
M. Mustapha ◽  
Rex A. Kuye ◽  
M. K. C. Sridhar
Keyword(s):  
Risk Assessment ◽  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Supply System ◽  
Water Safety ◽  
Safety Plan ◽  
Water Safety Plan ◽  
Coast Region

Background: Better water quality, improved sanitation and sound water resource management will improve public health and economic development in low-income countries. Water safety plan-based risk assessment and risk management from catchment to consumers are the modern and efficient approaches to safe drinking water supply established by World Health Organization. Thus, this paper aimed to assess risk from catchment level to consumers in the community of Brikama. Methods: This study report assessments of risk or hazards from catchment to consumers in Brikama Water Treatment Plant (BWTP), West Coast Region, The Gambia. The various means of data collection used include water quality monitoring, visual field inspection and questionnaire survey to explore data on where the water supply system goes wrong from catchment to consumers, so as to provide an improvement plan. Results: Overall, the day-to-day administration of services at BWTP was very impressive. The fencing of all the 17 boreholes at catchment sites has drastically reduced the risk of contamination including treatment systems and distribution lines. There are less risks observed and constant monitoring of the system was ensured. However, at the consumer end, there are some risks with poor practices associated with water handling, storage and hygiene measures at the household level. Some still use some unclean 20-liter containers to store water and indiscriminately kept drinking cups on the floor and unclean surfaces, and 50% lacked WASH knowledge related to water treatment, such as boiling and filtration at households. The overall perception of water storage, sanitation and hygiene practices could be rated moderately good. Conclusion: The overall findings of this study have shown tremendous achievement in the government's commitment to providing potable water to the people in Brikama Local Government Area. WASH education in the study area is recommended to avoid waterborne disease infections.

Water treatment to reduce internal corrosion in the drinking water distribution system in Oslo

2001 ◽  
Vol 1 (3) ◽  
pp. 91-96 ◽  
Author(s):  
L.J. Hem ◽  
E.A. Vik ◽  
A. Bjørnson-Langen
Keyword(s):  
Water Treatment ◽  
Corrosion Rate ◽  
Distribution System ◽  
Water Distribution ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Corrosion Monitoring ◽  
Copper Corrosion ◽  
Iron Corrosion ◽  
Internal Corrosion

In 1995 the new Skullerud water treatment plant was put into operation. The new water treatment includes colour removal and corrosion control with an increase of pH, alkalinity and calcium concentration in addition to the old treatment, which included straining and chlorination only. Comparative measurements of internal corrosion were conducted before and after the installation of the new treatment plant. The effect of the new water treatment on the internal corrosion was approximately a 20% reduction in iron corrosion and a 70% reduction in copper corrosion. The heavy metals content in standing water was reduced by approximately 90%. A separate internal corrosion monitoring programme was conducted, studying the effects of other water qualities on the internal corrosion rate. Corrosion coupons were exposed to the different water qualities for nine months. The results showed that the best protection of iron was achieved with water supersaturated with calcium carbonate. Neither a high content of free carbon dioxide or the use of the corrosion inhibitor sodium silicate significantly reduced the iron corrosion rate compared to the present treated water quality. The copper corrosion rate was mainly related to the pH in the water.

Experiences with the practical implementation and operation of biological nitrification for a small-scale drinking water treatment plant

2016 ◽  
Vol 16 (4) ◽  
pp. 922-930 ◽  
Author(s):  
L. Richard ◽  
E. Mayr ◽  
M. Zunabovic ◽  
R. Allabashi ◽  
R. Perfler
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Drinking Water Supply ◽  
Small Scale ◽  
Treatment Performance ◽  
Biological Nitrification

The implementation and evaluation of biological nitrification as a possible treatment option for the small-scale drinking water supply of a rural Upper Austrian community was investigated. The drinking water supply of this community (average system input volume: 20 m3/d) is based on the use of deep anaerobic groundwater with a high ammonium content of geogenic origin (up to 5 mg/l) which must be treated to prevent the formation of nitrites in the drinking water supply system. This paper describes the implementation and operation of biological nitrification despite several constraints including space availability, location and financial and manpower resources. A pilot drinking water treatment plant, including biological nitrification implemented in sand filters, was designed and constructed for a maximum treatment capacity of 1.2 m3/h. Online monitoring of selected physicochemical parameters has provided continuous treatment performance data. Treatment performance of the plant was evaluated under standard operation as well as in the case of selected malfunction events.

Optimal use of chlorine in water distribution networks based on specific locations of booster chlorination: analyzing conditions in Mexico

2015 ◽  
Vol 16 (2) ◽  
pp. 493-505 ◽  
Author(s):  
Daniel Hernández Cervantes ◽  
Jesús Mora Rodríguez ◽  
Xitlali Delgado Galván ◽  
Josefina Ortiz Medel ◽  
Martín Rubén Jiménez Magaña
Keyword(s):  
Water Treatment ◽  
Water Distribution ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Booster Chlorination ◽  
The Cost ◽  
Concentration Limits

Water distribution networks (WDNs) could present problems of pathogen intrusion that affect the health of consumers. One solution to diminish this risk is to add more disinfectant to the water at the drinking water treatment plant (DWTP). However, this increases the cost of water treatment and may also cause the formation of trihalomethanes. Mexico has the largest bottled water market in the world. Also, most houses are built with individual storage containers due to intermittent service, which generates a greater residence time of the water before use. This paper shows an alternative to guarantee minimum disinfection along WDNs and diminish the use of disinfectant at the DWTP considering the conditions of water consumption and use in Mexico. We propose a model based on Genetic Algorithms to obtain scenarios where free chlorine is maintained at the minimum permissible concentration throughout the day. In addition, Water Managers could optimize the use of disinfectant by implementing booster chlorination stations (BCSs). The results show that chlorine use could be reduced by 38%, therefore guaranteeing the chlorine concentration limits along the WDN.

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