scholarly journals Quality changes of drinking water in the water supply network (case study from Lithuania)

2009 ◽  
Vol 41 (2) ◽  
pp. 109-118
Author(s):  
Marina Valentukeviciene ◽  
Aukse Amosenkiene ◽  
Regimantas Dauknys
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Samples ◽  
Water Distribution ◽  
Quality Changes ◽  
Supply Network ◽  
Water Supply Network ◽  
Well Field ◽  
Drinking Water Distribution

Quality changes of drinking water in the water supply network (case study from Lithuania) The purpose of this research was to examine water quality changes by distributing in to the water supply network. Water samples were collected from Varena town (Lithuania) drinking water distribution system fed by groundwater from well field. Parameters related to undesirable increasing of nitrites and nitrates concentrations have been measured considering these samples: pH, conductivity, concentration of total iron, manganese, ammonium, nitrates and nitrites. Results showed that groundwater from well field were extremely susceptible to favor bacterial growth in the pipelines. The occurrence of nitrites and nitrates in drinking water samples correlated positively with the lengths of old iron pipelines and negatively with the content of newly laid pipelines. The obtained results also showed that the potential nitrates increasing induced by the distribution of treated water could be reduced if: nitrates levels were below detection limits at the outlet of the water treatment plant; biological ammonium removal treatment implementation should reduce the levels of the nitrates and nitrites of the treated supplied water. Although the nitrates concentration increase in drinking water distribution systems, the issues with nitrites accumulation are rare in Lithuania. However, such processes still need to be proved in more extensive investigation, but these research results could be applied as a basic scenario.

Biofilm bacterial community transition under water supply quality changes in drinking water distribution systems

2018 ◽  
Vol 4 (5) ◽  
pp. 644-653 ◽  
Author(s):  
Xu Ma ◽  
Guangming Zhang ◽  
Guiwei Li ◽  
Yunjie Wan ◽  
Huifang Sun ◽  
...  
Keyword(s):  
Drinking Water ◽  
Bacterial Community ◽  
Water Supply ◽  
Distribution Systems ◽  
Water Distribution ◽  
Quality Changes ◽  
Community Transformation ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
Community Transition

Water supply quality changes can cause significant biofilm bacterial community transformation in old iron drinking water distribution pipes.

Understanding and forecasting taste-and-odour formation in a drinking water distribution system: case study of Lyon (France)

2009 ◽  
Vol 9 (1) ◽  
pp. 67-74 ◽  
Author(s):  
Elise Corbi ◽  
Valérie Jacquemet ◽  
Alain Quendo ◽  
Francine Manciot ◽  
Adeline Lamy ◽  
...  
Keyword(s):  
Drinking Water ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Distribution Network ◽  
Drinking Water Distribution ◽  
First Results ◽  
Mechanisms Of Formation

Lyon, France has the opportunity to distribute in abundance a groundwater resource with a good quality for drinking water. However, the length and the complexity of the distribution network can lead to consumer complaints in some areas of the water distribution system. In order to improve the organoleptic quality of distributed water, the water supplier wants to get a better understanding of potential taste and odour formation and to succeed in controlling it. Since 2006, activities have been taken with targeted analyses and sensory evaluation of water, taking into account both the consumers' private networks and the citywide distribution network. The first results were focused on the occurrence of bromophenols along the water distribution system, the understanding of the mechanisms of formation of such compounds, as well as their incidence on taste-and-odour events at the consumer's home.

scholarly journals THE SUSTAINABLE DEVELOPMENT ASSESSMENT OF DRINKING WATER SUPPLY SYSTEM / GERIAMOJO VANDENS TIEKIMO SISTEMOS DARNAUS VYSTYMO VERTINIMAS

2012 ◽  
Vol 17 (4) ◽  
pp. 688-699
Author(s):  
Marina Valentukevičienė ◽  
Gytautas Ignatavičius ◽  
Auksė Amosenkienė
Keyword(s):  
Sustainable Development ◽  
Drinking Water ◽  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Drinking Water Supply ◽  
Drinking Water Distribution System ◽  
The Sustainable Development ◽  
Drinking Water Distribution

Drinking water distribution system takes a significant place in sustainable urban development. In order to solve some environmental issues it is necessary to improve the maintenance of the environmental impact of chemical compounds which can come in contact with water. The aim of the research is to complete the analysis of the sustainable development of drinking water pipelines in Lithuania as well as to structure the chemical content of pipelines for further increase of supplied water quality and simplification of maintenance. Analytical and descriptive methods were used in the research process. The investigation included 150 samples that were obtained in different water stagnation times in lab-scaled pipelines. During the research the following indicators were set: total iron, manganese, ammonium ions, nitrate and nitrite concentrations, turbidity and chemical oxygen demand (CODCr). To ensure sustainability of drinking water distribution system in the end of this research the appliance of a certain model of actions was considered. This model says that material of potable water network must be chosen depending on water chemical indicators, water reaction with pipeline material and scale formation causes. Consequently, to reduce a negative effect of chemical processes on the drinking water supply measures of sustainable ecological development have to be taken. Santrauka Geriamojo vandens tiekimo sistema yra labai svarbus darnios miesto plėtros objektas. Siekiant išspręsti tam tikras aplinkosaugos problemas, būtina padidinti cheminių junginių, kurie gali kontaktuoti su vandeniu, kontrolę, taip užtikrinant tinkamą poveikio aplinkai priežiūrą. Šio mokslinio tyrimo tikslas – atlikti geriamojo vandens vamzdyno Lietuvoje analizę darnaus vystymosi aspektu, struktūrizuoti cheminę vamzdynų sudėtį, siekiant pagerinti tiekiamo vandens kokybę ir supaprastinti tolesnę vandentiekio vamzdynų priežiūrą. Mokslinio darbo metu buvo taikomi analitiniai ir eksperimentiniai tyrimo metodai. Buvo ištirta 150 mėginių, paimtų iš laboratorijoje sukonstruoto vamzdyno. Mėginiai tirti atsižvelgiant į vandens išbuvimo vamzdyne trukmę. Tyrimo metu buvo nustatomi šie cheminiai indikatoriai: bendroji geležis, mangano koncentracija, amonio jonų kiekis, nitritų ir nitratų koncentracijos, drumstumas ir cheminis deguonies suvartojimas (ChDSCr). Siekiant užtikrinti geriamojo vandens tiekimo sistemos tvarumą, tyrimo pabaigoje buvo pasiūlytas tam tikras veiksmų modelis. Jis rodo, kad vandentiekio vamzdynų medžiaga turi būti parinkta pagal tiekiamo vandens cheminius indikatorius, vandens sąveikos su vamzdyno medžiaga ir nuosėdų formavimosi priežastis. Todėl būtina imtis darnaus vystymo priemonių, mažinant neigiamą cheminių procesų įtaką tiekiamo vandens kokybei.

scholarly journals Water supply network model for sustainable industrial resource use a case study of Zeeuws-Vlaanderen in the Netherlands

2020 ◽  
Vol 24 ◽  
pp. 100131 ◽  
Author(s):  
Joeri Willet ◽  
Jude King ◽  
Koen Wetser ◽  
Jouke E. Dykstra ◽  
Gualbert H.P. Oude Essink ◽  
...  
Keyword(s):  
The Netherlands ◽  
Water Supply ◽  
Network Model ◽  
Resource Use ◽  
Supply Network ◽  
Water Supply Network ◽  
Industrial Resource

Taking Fangcun District of Guangzhou as an Example to Discuss the New Joint Repair Technology of Water Distribution Network

2012 ◽  
Vol 226-228 ◽  
pp. 2328-2334
Author(s):  
Dan Gao ◽  
Zhi Hong Wang ◽  
Gang Ren ◽  
Zhi Hong Long ◽  
Yu Li Chen
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Water Distribution Network ◽  
Supply Network ◽  
Trenchless Technology ◽  
Water Supply Network ◽  
Repair Technology ◽  
Joint Repair ◽  
Working Principle ◽  
Technology Strategies

This paper has discussed the working principle and characteristics of the new commonly used pipeline repair technology by introducing the currently commonly used pipeline repair technology. The new commonly used pipeline repair technology can be classified as two big kinds including one based on excavation and trenchless technology. When selecting the pipeline repair technology, we mainly considerate four factors: whether excavat pipeline , whether cut off the water and the time of cutting off water , the time of pipeline repair , the materials of pipeline repair, and so on . The actual situation and network features of water supply network in Fangcun district of Guangzhou are analysed , the joint repair technology strategies of water supply network which applies to Fangcun district are discussed by synthesizing the applicability, merit and demerit of new pipeline repair technology, and use these as technical reference and guidance for other similar areas .

scholarly journals PUBLIC ENVIRONMENTAL MONITORING OF DRINKING WATER QUALITY IN THE CITY OF NORILSK

2021 ◽  
pp. 104-111
Author(s):  
N. V. Karmanovskaya
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Salt Content ◽  
Supply Network ◽  
Water Supply Network ◽  
Industrial Region ◽  
Quality Of Water ◽  
The City ◽  
Concentration Of Impurities

According to UN estimates, the shortage of safe drinking water can become one of the most acute and pressing problems. The specificity of this problem for Russia is not a shortage of water resources, but their pollution and ongoing degradation of water bodies. The quality of water is understood as the totality of its properties associated with the nature and concentration of impurities in the water. Water analysis is the only tool for monitoring its condition and properties. During the experiment, a team of researchers took samples of drinking water from the water supply network in various districts of the Norilsk industrial region, studied the dependence of the quality characteristics of water on the location and sampling method. Based on the findings, conclusions on the quality of drinking water were drawn. During the experiment, the authors found that in terms of organoleptic indicators, drinking water in all areas of the NIR meets the requirements of Sanitary Rules and Regulations and GOST. Taking samples at three control points of the Norilsk industrial region, it has been proven that the water is soft and its salt content is mainly due to the presence of hardness salts. Having made the necessary analyses, the authors found that the presence of microorganisms in the water supply network of the NIR is not significant, the permanganate oxidisability indicator does not exceed the requirements of Sanitary Rules and Regulations.

Sign in / Sign up

Export Citation Format

Share Document