scholarly journals Analysis of common problems and technical points in quality management of city water supply and drainage construction quality

Author(s):  
Miao Zhaojing ◽  
Xu Zhaolong

In recent years, the quality of people’s lifestyle has significantly increased when the speed of social and economic development is accelerating. Among them, the management of city water supply and drainage construction quality can provide the necessary guarantee for the improvement of people's quality of life, so the scientific of construction quality management will also become the focus of urban modernization. However, there are many problems in the management of water supply and drainage construction quality in cities after considering the real situation. If the problems are not solved as soon as possible, it will affect people’s daily life and works badly and also restrict the development of urbanization. Therefore, the implementation and practical of city water supply and drainage construction quality management is very important. Based on this, the main research content of this article is about the city water supply and drainage construction quality management and to elaborate the existed common problems and raises up some technical points and hopes that this article content can help in management of drainage construction quality.

2021 ◽  
Vol 11 (1) ◽  
pp. 108
Author(s):  
Juliana Nazareth de Lana ◽  
Márcio de Oliveira ◽  
Vanessa Romario de Paula ◽  
Cézar Henrique Barra Rocha

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.


2016 ◽  
Vol 4 (3) ◽  
pp. 37
Author(s):  
Dewi Setiawati

This research mainly aims to explore competencies of training graduated which focuses on factors that influence competencies of training graduates, such as the implementation of quality management system ISO 9001:2008 and teaching quality of Widyaiswara. The main research problem addressed in this study is how the implementation of quality management system ISO 9001:2008 and teaching quality of Widyaiswara contribute to competencies of training graduates, both partially and altogether. I conducting this research, explanatory survey method is used with questionairres using likert and interval scales as the data collection techniques, that are distributed to 51 graduates of training at PPPPTK Penjas dan BK. To analyse the data, the study employs PPM (Pearson Product Moment), to investigate the direct and non-direct correlations of dependent and independent variables. Significance tests are administered using F-test and t-test. The results show that (1) the impelementation of quality management system ISO 9001:2008 significantly influences competencies of training graduates; (2) teaching quality of Widyaiswara significantly influences competencies of training graduates; and (3) both the implementation of quality management system ISO 9001:2008 and teaching quality of Widyaiswara significantly influence competencies of training graduates.


2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Guoliang Yu ◽  
Fan Fan Yang ◽  
Li Li Li ◽  
Zhenfeng Zhenfeng Li ◽  
Zhenlong Shi

As an important construction link in the construction project, the quality of the water supply and drainage directly affects the overall quality of the construction project. Because of the strong function of the water supply and drainage project, the construction quality is easily affected by the construction method. For this reason, construction enterprises should attach importance to the mastery of water supply and drainage construction methods. And further understand the relevant precautions of construction water supply and drainage construction, in order to achieve the purpose of improving the quality of water supply and drainage construction. 


2021 ◽  
Author(s):  
Павел Алексеевич Лапин ◽  
Сергей Александрович Копылов ◽  
Дмитрий Васильевич Елисеев

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.


1998 ◽  
Vol 78 (1) ◽  
pp. 19-24 ◽  
Author(s):  
C.Jane Wyatt ◽  
Veronica Lopez Quiroga ◽  
Rita Teresa Olivas Acosta ◽  
Rosa Olivia Méndez
Keyword(s):  

2014 ◽  
Vol 638-640 ◽  
pp. 2332-2337
Author(s):  
Hong Ke ◽  
Lu Yue ◽  
Zhi Ping Hu

There are two kinds of bid evaluation methods in China, which are the lowest bid price method and the comprehensive evaluation method. They have their own advantages and disadvantages, and they can’t replace each other. Especially, the applicable scope of comprehensive evaluation method is wide. Quantifying the technical bid and commercial bid weighted, calculating for each bid comprehensive evaluating price or comprehensive evaluation points, and then selecting a high comprehensive quality unit. The paper aims at the particularity of comprehensive evaluation method. Then to study the content of the construction quality management system, the indicators and criteria, which guarantees the quality of the project.


Author(s):  
Oksana Gurieva ◽  
Viktor Barhatov

Research objective is development of the forecast of scenario conditions of increase of economic efficiency of the city-forming enterprise of the monotown for further social and economic development of the region for 2014-2016. For achievement of a goal a number of tasks is solved: consideration of theoretical prerequisites to concept economic efficiency; research of features of economic efficiency of the city-forming enterprise in the monotown; choice of a method of forecasting; forecasting of economic efficiency of the city-forming enterprise. When carrying out research scenario approaches and expert methods of forecasting are used. The main versions of the forecast – option 1 (conservative), option 2 (moderate and optimistical) and option 3 (forced) – are developed on the basis of a uniform hypothesis of external conditions and differ with models of behavior of the enterprises of the monotown, and as with prospects of increase of their efficiency. It is established that at realization of all versions of the forecast economic efficiency of the city-forming enterprise of the monotown increases. However quality of this increase in considered scenarios of the forecast of social and economic development of the region variously. As the most acceptable the moderate and optimistical option is recognized, so at its realization economic efficiency will increase on the average 0,7 items above, than in option 1. The moderate and optimistical option is more focused on innovations, assumes carrying out transformations in development of the human capital and science, and also active modernization of the enterprise.


2021 ◽  
pp. 104-111
Author(s):  
N. V. Karmanovskaya

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.


Author(s):  
Guoliang Yu ◽  
Fan Fan Yang ◽  
Li Li Li ◽  
Zhenfeng Zhenfeng Li ◽  
Zhenlong Shi

As an important construction link in the construction project, the quality of the water supply and drainage directly affects the overall quality of the construction project. Because of the strong function of the water supply and drainage project, the construction quality is easily affected by the construction method. For this reason, construction enterprises should attach importance to the mastery of water supply and drainage construction methods. And further understand the relevant precautions of construction water supply and drainage construction, in order to achieve the purpose of improving the quality of water supply and drainage construction. 


2020 ◽  
Vol 99 (6) ◽  
pp. 563-568
Author(s):  
Yuliya A. Novikova ◽  
K. B. Friedman ◽  
V. N. Fedorov ◽  
A. A. Kovshov ◽  
N. A. Tikhonova ◽  
...  

Introduction. Regulation of drinking water quality is a very important area of health care and improving the quality of life of the population of the Russian Federation.The aim of this work is the development a model for the assessment of the drinking water quality and calculating the share of the population, including urban, provided with high-quality drinking water from centralized water supply systems, taking into account new methodological approaches to the evaluation of the quality of drinking water using the example of water supply to settlements in the Leningrad Region. Material and methods. The data on the organization of centralized cold water supply systems and monitoring systems for drinking water quality and the results of laboratory studies of drinking water quality in the cities of Volkhov, Svetogorsk, Slantsy, Tosno were studied. Statistical processing of the results was performed, the categories of quality of drinking water supplied to the population were determined, the number of the population provided with high-quality drinking water from the water supply system was calculated in accordance with Guidelines 2.1.4.0143-19.Results. In 2018, 100% of the population was provided with quality drinking water only in the city of Slantsy. In the city of Tosno, this index reached of 83.5%. In the cities of Volkhov and Svetogorsk, drinking water was rated as low-quality. But it is worth noting that in the cities of Volkhov and Slantsy laboratory tests were carried out at 2 points, in the city of Svetogorsk - only at the 1 point, which, given the number of residents, is not enough. For an objective assessment of the state of drinking water and the development of measures aimed at improving its quality, it is necessary to increase the number of monitoring points, as well as to include the results of control and supervision measures and production laboratory control conducted by water supply organizations in the volume of laboratory information.Conclusion. The proposed model allows us to assess the drinking water quality in centralized water supply systems and the proportion of the population, including urban, provided with quality drinking water at the level of the water supply system, settlement, municipal district (urban district), subject of the Russian Federation


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