scholarly journals URGENT PROBLEMS OF WATER DISTRIBUTION MANAGEMENT IN MAIN CANALS OF IRRIGATION SYSTEMS

2021 ◽  
Author(s):  
A. A. Tkachyev ◽  
◽  
I. V. Olgarenko ◽  
Keyword(s):  
Water Distribution ◽  
Management Strategies ◽  
Irrigation Systems ◽  
Automated Control ◽  
Distribution Management ◽  
Water Transportation ◽  
Quality Of Water ◽  
Load Increase ◽  
Main Canal

Purpose: to analyze the state of modern water distribution management systems in irrigation systems and review strategies for water distribution management in main canals of irrigation systems. Discussion. Rising water consumption and climate change are major sources of water scarcity worldwide. With the load increase on water transportation to irrigation fields, the issues of researching modern methods and means of improving the quality of water distribution management in irrigation canals become relevant. In the process of research, the conditions for water distribution management in the Don Main Canal Rostov region were considered and an analysis of the main currently used water distribution management strategies and the possibility of their implementation in various conditions was made, with an emphasis on currently unsolved problems. As a result of the research, the need to activate the process of transition to the strategy of automated control of water distribution in irrigation systems using mathematical models and modern means, including adaptive control using fractional controllers, has been substantiated. Conclusions. In the field of water distribution management in the main canals of irrigation systems, a number of problems of both theoretical and practical nature still remain, for the solution of which a systematic approach using both traditional methods based on solving differential equations, control theory, and neural networks and cloud calculations is required.

scholarly journals Building a Methodology for Assessing Service Quality under Intermittent Domestic Water Supply

Water ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1164 ◽  
Author(s):  
Assia Mokssit ◽  
Bernard de Gouvello ◽  
Aurélie Chazerain ◽  
François Figuères ◽  
Bruno Tassin
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Distribution ◽  
Water System ◽  
Evaluation Framework ◽  
Domestic Water ◽  
Water Service ◽  
Quality Of Water ◽  
History Of

This document proposes a methodology for assessing the quality of water distribution service in the context of intermittent supply, based on a comparison of joint results from literature reviews and feedback from drinking water operators who had managed these networks, with standards for defining the quality of drinking water service. The paper begins by reviewing and proposing an analysis of the definition and characterization of intermittent water supply (IWS), highlighting some important findings. The diversity of approaches used to address the issue and the difficulty of defining a precise and detailed history of water supply in the affected systems broadens the spectrum of intermittency characterization and the problems it raises. The underlined results are then used to structure an evaluation framework for the water service and to develop improvement paths defined in the intermittent networks. The resulting framework highlights the means available to water stakeholders to assess their operational and management performance in achieving the improvement objectives defined by the environmental and socio-economic contexts in which the network operates. Practical examples of intermittent system management are collected from water system operators and presented for illustration purposes (Jeddah, Algiers, Port-au-Prince, Amman, Cartagena, Barranquilla, Mexico, Cancun, Saltillo, Mumbai, Delhi, Coimbatore …).

Build up a database to determine the management of drinking water in the Province of Cartago, Costa Rica

2016 ◽  
Vol 6 (4) ◽  
pp. 584-592 ◽  
Author(s):  
Silvia M. Soto Córdoba ◽  
Macario Pino Gómez ◽  
Lilliana Gaviria Montoya
Keyword(s):  
Drinking Water ◽  
Costa Rica ◽  
Water Distribution ◽  
Potable Water ◽  
Public Institutions ◽  
Demand And Supply ◽  
On Demand ◽  
Quality Of Water ◽  
Water Exploitation

In Costa Rica, the majority of people have drinking water in their homes, but because of climate change along with the increase of population and non-existent planning programs, the distribution of this resource could be affected. To ensure sustainability of drinking water, information on demand and supply is required. Unfortunately, the information is outdated and there is no single unified database to which all management related institutions have access. Costa Rica has many public institutions that perform quality control, monitor and provide licenses for water exploitation. Each institution organizes its information according to their own criteria, therefore, making it impossible to compare the data, and difficult to identify the main problems. The authors verified and compared every database available, aiming to consolidate one database to determinate management of water distribution in Cartago. The main results of this research identified distribution of water suppliers throughout the province, the results were: Aqueduct Administration Associations (27.1%), Municipal Aqueducts (60.2%) and National Costa Rica Aqueducts and Sewerage Institute (AyA) Aqueducts (14.1%). One hundred per cent of Municipal and AyA Aqueducts disinfect and provide potable water, but 25% of Aqueduct Administration Rural Associations do not disinfect the water and there is not enough information about the quality of water that they offer.

Field observations and management strategy for hot spring wastewater in Wulai area, Taiwan

2010 ◽  
Vol 61 (9) ◽  
pp. 2309-2316
Author(s):  
J. Y. Lin ◽  
C. F. Chen ◽  
F. R. Lei ◽  
C. D. Hsieh
Keyword(s):  
Hot Springs ◽  
Hot Spring ◽  
Management Strategies ◽  
Water Bodies ◽  
E Coli ◽  
Untreated Wastewater ◽  
Quality Of Water ◽  
Treatment Equipment ◽  
Different Seasons

Hot springs are important centers for recreation and tourism. However, the pollution that may potentially be caused by hot spring wastewater has rarely been discussed. More than half of Taiwan's hot springs are located in areas where the water quality of water bodies is to be protected, and untreated wastewater could pollute the receiving water bodies. In this study, we investigate hot spring wastewater in the Wulai area, one of Taiwan's famous hot spring resorts. Used water from five hot spring hotels was sampled and ten sampling events were carried out to evaluate the changes in the quality of used water in different seasons, at different periods of the week, and from different types of hotels. The concentrations of different pollutants in hot spring wastewater were found to exhibit wide variations, as follows: COD, 10–250 mg/L; SS, N.D.−93 mg/L; NH3-N, 0.01–1.93 mg/L; TP, 0.01–0.45 mg/L; and E. coli, 10–27,500 CFU/100 mL. The quality of hot spring wastewater depends on the operation of public pools, because this affects the frequency of supplementary fresh water and the outflow volume. Two management strategies, namely, onsite treatment systems and individually packaged treatment equipment, are considered, and a multi-objective optimization model is used to determine the optimal strategy.

scholarly journals MORTALITY OF BLACK-BAND MYLEUS Myloplus Schomburgkii DUE TO POOR WATER QUALITY ASSOCIATED WITH OVERPOPULATION OF DUCKWEEDS IN A CULTURE POND IN THE PERUVIAN AMAZONIA

2021 ◽  
Vol 30 (1) ◽  
pp. 107-112
Author(s):  
Germán Augusto MURRIETA-MOREY ◽  
Harvey SATALAYA-ARELLANO ◽  
Clint Sting RAMÍREZ-CHIRINOZ ◽  
Luciano Alfredo RODRÍGUEZ-CHU
Keyword(s):  
Lemna Minor ◽  
Dead Zone ◽  
Management Strategies ◽  
Water Clarity ◽  
Quality Of Water ◽  
Poor Water Quality ◽  
Black Band ◽  
Dead Fish ◽  
Physical And Chemical

Ponds covered with duckweeds release nutrients rapidly, causing problems of eutrophication of the water which can reduce water clarity and quality, creating a hypoxic or anoxic ‘dead zone' lacking sufficient oxygen to support most organisms. In the present study, the sudden mortality of black-band myleus Myloplus schomburgkii Jardine, 1841 drove the investigate of factors that caused the death of the specimens registered in a fish pond in the Peruvian Amazon. After the tallying of dead fish, it was revealed that sixty individuals (75% of the total population) of M. schomburgkii had died. The taxonomic identification of the aquatic plant revealed the presence of “duckweeds” locally named in Peru as “lenteja de agua” Lemna minor distributed throughout the pond. Physical and chemical water parameters revealed low levels of oxygen, acid water, and high levels of nitrate and phosphate. Since duckweeds cannot be completely eliminated from waters that are conducive to its growth and require periodic harvesting to prevent matting, proper management strategies therefore become critical to guarantee good quality of water in the pond and avoid black-band myleus deaths due to imbalances in physical and chemical parameters.

scholarly journals The effect of the mixing of water from different sources in the water supply system on tap water quality – a full-scale technical investigation case study

2018 ◽  
Vol 19 (1) ◽  
pp. 303-312
Author(s):  
A. Szuster-Janiaczyk ◽  
J. Bylka
Keyword(s):  
Water Quality ◽  
Distribution System ◽  
Water Distribution ◽  
Tap Water ◽  
Low Flow ◽  
Quality Of Water ◽  
Tap Water Quality ◽  
The Impact ◽  
Different Sources

Abstract The paper presents a detailed analysis of the quality of water pumped into a network and sampled from 39 monitoring points located on the network. A difference in the quality of water sampled from two different sources was demonstrated, as well as the impact of the mixing of the two waters in the water distribution system (WDS) on tap water quality. A mathematical model was used to identify the zones of water mixing and the areas of unfavourable hydraulic conditions (low flow rates and long retention times).

scholarly journals Assessment of microbial quality of water in popular restaurants in Sylhet city of Bangladesh

2016 ◽  
Vol 41 (1) ◽  
pp. 115-125 ◽  
Author(s):  
Ayesha Sarker ◽  
Sharmista Dash ◽  
Md Mozammel Hoque ◽  
Sultan Ahmed ◽  
Md Rayhan Shaheb
Keyword(s):  
Drinking Water ◽  
Human Health ◽  
Water Distribution ◽  
Pathogenic Bacteria ◽  
Potable Water ◽  
Coliform Bacteria ◽  
Microbial Quality ◽  
Great Chance ◽  
Quality Of Water

Microbial contaminations of drinking water constitute a major burden on human health. Interventions to improve the quality of drinking-water provide significant benefits to health. An assessment of microbial quality of water in the samples obtained from different popular restaurants of Sylhet City Corporation, Bangladesh were analyzed in the laboratory. Our aims were to find out the microbial properties of water, to analyze the potable water qualities of the restaurants and also to compare it with different standards to assess the health risk of people. The microbial tests viz. MPN, TVC and total coliform test were studied. Results revealed that all the water samples were fecal contaminated and had a great chance of contamination by other pathogenic bacteria. Results indicated that most of the samples were significantly positive to MPN test and TVC bacteria were highly significant. The risk score for coliform bacteria also remarked high risk for human health according to WHO standards and were not suitable as potable water. Our recommendations are therefore, water supply authority including restaurant owners should take necessary steps for the maintenance of microbial quality of water and microbial assessments should be done very often to leading a hygienic water distribution environment of the city.Bangladesh J. Agril. Res. 41(1): 115-125, March 2016

scholarly journals Impact of monitoring on the mean time to repair of the water supply network

2018 ◽  
Vol 44 ◽  
pp. 00101
Author(s):  
Magdalena Łój-Pilch ◽  
Anita Zakrzewska
Keyword(s):  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Repair Time ◽  
Supply Network ◽  
Water Losses ◽  
Water Supply Network ◽  
Quality Of Water ◽  
Before And After

The introduction of monitoring to a water supply network results in reducing its failure rate, increasing its reliability as well as improving the quality of water supplied to consumers, reducing water losses and increasing work safety in a water distribution system. Monitoring enables detection of leakages that could go unnoticed without this system, facilitates detection of leakages and location of failures, i.e. it shortens the repair time — or rather its component — the awaiting-repair time. This paper presents the results of the reliability analysis for a city located in the Upper Silesian Industrial Region before and after the implementation of monitoring to the water supply network.

scholarly journals Colonization by Pseudomonas aeruginosa of dental unit waterlines and its relationship with other bacteria: suggestions for microbiological monitoring

2019 ◽  
Vol 17 (4) ◽  
pp. 532-539 ◽  
Author(s):  
Savina Ditommaso ◽  
Monica Giacomuzzi ◽  
Elisa Ricciardi ◽  
Gabriele Memoli ◽  
Carla M. Zotti
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Distribution Systems ◽  
Water Distribution ◽  
Viable Count ◽  
Environmental Bacterium ◽  
Quality Of Water ◽  
Dental Unit Waterlines ◽  
Good Concordance ◽  
The Relationship

Abstract Pseudomonas aeruginosa is an environmental bacterium, ubiquitous in aquatic habitats and water distribution systems, including dental unit waterlines (DUWLs). We investigated the prevalence of P. aeruginosa in DUWLs from private dental settings. We also analyzed the relationship between P. aeruginosa contamination and the presence of Legionella spp. and total viable count (TVC) in order to suggest a simple and inexpensive protocol to test the quality of water from DUWLs. We detected and quantified P. aeruginosa both by culture and by a PMA (propidium monoazide)-qPCR method. Overall, we detected P. aeruginosa in 17 samples using the PMA-qPCR and in 11 samples using the culture. All culture-positive samples were positive with the PMA-qPCR too, with an agreement between the two methods of 93% and a Cohen's kappa coefficient of κ = 0.747 (good concordance). Comparing results with results of our previous study, we noted that (a) P. aeruginosa was isolated only from DUWLs with high TVC and (b) five out of six Legionella-positive samples were negative for Pseudomonas spp. Our final suggestion is that the cleanliness of DUWLs should be assessed by TVC because it is a good indicator of the presence of pathogens such as Legionella spp. and P. aeruginosa.

scholarly journals ANALISIS PENGELOLAAN AIR PROGRAM PAMSIMAS SEBAGAI SUMBER AIR BERSIH DI KECAMATAN KUANTAN MUDIK KABUPATEN KUANTAN SINGINGI

2020 ◽  
Vol 14 (1) ◽  
pp. 66
Author(s):  
Revi Lasmita ◽  
Aras Mulyadi ◽  
Manyuk Fauzi
Keyword(s):  
Water Quality ◽  
Management Strategies ◽  
Management Policy ◽  
Clean Water ◽  
Quality Of Water ◽  
Management Policies ◽  
The Government ◽  
The Right ◽  
Indicators Of Success

Clean water according to Permenkes RI No 416 / Menkes / Per / IX / 1990 is water that used for daily needs whose quality meets health requirements and can be drunk after cooking, one of the government's efforts to meet the clean water needs of the community is the Pamsimas Program. The Pamsimas Program is one of the programs and concrete actions of the government (central and regional) with the support of the World Bank to improve and meet the needs of drinking water supply, sanitation to improve the level of public health, especially in reducing the number of diarrheal diseases and other diseases that are transmitted through water and the environment. Muaro Tombang Village, Sungai Manau Village and Bukit Kauman Village are the three villages in Kuantan Mudik Sub-District that have not had access to 100% clean water. Indicators of success and sustainability of the Pamsimas Program are the quantity and quality of water sources, management policies and management strategies for the Pamsimas Program. The quantity of water in the three villages in terms of discharge and minimum reservoir capacity meet the needs of the community, the water quality in the three villages there are several parameters that do not meet the quality standards of the Minister of Health Regulation No. 416 of 1990 concerning Clean Water Quality Requirements, so it needs to be treated for water Pamsimas Program. The community's perception of the socio-economic and management policies of the Pamsimas Program Muaro Tombang Village and Sungai Manau Village is included in the agreed category, while the community's perception of the socio-economic and management policy of the Pamsimas Program in the Bukit Kauman Village is in the neutral category. The right strategy used for the management of the Pamsimas Program in the three villages is the aggressive strategy (Growth Oriented Strategy), namely the development of the Pamsimas Program by utilizing the strengths of the opportunities that have been identified.

Research on Correlation of Total Bacterial and other water quality index in Water Distribution Network

2011 ◽  
Vol 287-290 ◽  
pp. 1646-1652
Author(s):  
Song Hu Li ◽  
Jie Li ◽  
Dong Sheng Dai
Keyword(s):  
Quality Index ◽  
Water Distribution ◽  
Yellow River ◽  
Water Distribution Network ◽  
Raw Water ◽  
Free Oxygen ◽  
Bacterial Colony ◽  
Quality Of Water ◽  
Better Than

The water qualities of 5 waterplants were studied by investigating the total bacterial colony, oxygen consumption, free oxygen, and the turbidity. The results showed that the quality of water from ground water in the Industry North Road waterplant is better than those in Yuqing and Quehua which derived from the Yellow River indicated tipical seasonal chang. The quality of the outlet is mainly affected by the quality of raw water. The correlation analysis indicated that total number of colony did not significantly correlated to other indicators.

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