Design of Automatic Mixing System for Water Treatment

2013 ◽  
Vol 437 ◽  
pp. 414-417
Author(s):  
Zhi Jie Xiao ◽  
Yi Yong Yang ◽  
Sheng Wen Wang ◽  
Kang Ning Zhao
Keyword(s):  
Drinking Water ◽  
Water Purification ◽  
Ammonia Nitrogen ◽  
Industrial Water ◽  
Domestic Water ◽  
Main Method ◽  
Quality Of Water ◽  
Ion Exchange Column ◽  
Nitrogen Ions

The excessive ammonia nitrogen ions and nitrate in the domestic water and industrial water have seriously detriment of health of human being. The application of optimization solution for water purification is a main method to analyze the function of water purification device. In this paper, an automatic mixing system is designed to analyze the performance of ion-exchange column using LabVIEW. This system can solve the problem such as discontinuous proportion, complicated operation and low proportion precision which exists in the current proportion device. The accuracy of over 97% is shown by the experimental results in this study and it is also found that the quality of water can satisfy the requirement of drinking water.

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 …).

Drinking water policy in the frame of the Directive 2000/60/EC with emphasis on drinking water prices

2005 ◽  
Vol 5 (6) ◽  
pp. 243-250 ◽  
Author(s):  
N. Safarikas ◽  
N.V. Paranychianakis ◽  
O. Kotselidou ◽  
A.N. Angelakis
Keyword(s):  
Drinking Water ◽  
Water Policy ◽  
Economic Cost ◽  
Water Pricing ◽  
Domestic Water ◽  
Pricing Policy ◽  
Real Cost ◽  
Quality Of Water ◽  
Average Water

The Water Framework Directive (WFD) 2000/60/EC, which has been transposed into the national legislation with the Law 3199/2003 (MoEPPW, 2003), will cause substantial changes in the drinking water pricing policy and the domestic water authorities involved such as the Municipal Enterprises for Water Supply and Sewerage (DEYA). Up to date, drinking water pricing policy has been based only on the recovery of the economic cost and in some cases neither this. Therefore, domestic water is not priced taking into account its real cost. Based on data provided by 74 DEYA representing 2.10 million inh, the average water price is estimated to be 1.19 €/m3. Analysis of these data reveals a deviation of 41.67% from the real cost. The relation of consumers with the Enterprise, but also that of management and employees, should be a bidirectional relation, in order to be comprehensible by all. Thus, an agreement that will point out that the most excellent quality of water presupposes water policy which will consider sustainability and the current requirements of the Enterprise and of course the consumers should be established between them.

scholarly journals Devices for cleaning tap water

2019 ◽  
Vol 97 ◽  
pp. 01027
Author(s):  
Zhanna Govorova ◽  
Nikita Podlesnov ◽  
Vadim Govorov
Keyword(s):  
Drinking Water ◽  
Water Purification ◽  
Water Distribution ◽  
Tap Water ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Calcium Content ◽  
Domestic Water ◽  
Common Causes

The condition of the water distribution network of the centralized water supply and its high wear, at the same time with other factors, affect the quality of drinking water transported to the consumer of drinking water. The most common causes of the secondary pollution of drinking water during its transportation are considered, as a result of which the concentration of dissolved and undissolved impurities and corrosion products increases, unpleasant smells and tastes appear in the water, microbiological and parasitological indicators deteriorate. Along with measures to improve the technology of water purification at waterworks, replacement, cleaning and repair of pipelines, in practice domestic water purification devices are used. The results of studies of the effectiveness of additional purification of drinking water are presented in the article. The water is taken for analysis from different points of the Moscow distribution network on water treatment devices: “JNT-RO”, filter “Aquafor”, installation “OSMO 300” with a capacity from 187.2 to 380 l/day. The results showed that the original tap water in its qualitative composition met the regulatory requirements for drinking water, and after passing through the elements of water purification devices during the stated service life the quality characteristics of turbidity - 100%, chromaticity - 84.6-100%, Total Dissolved Solids (TDS) - 84.4-94.2% and hardness - 87.3-93.8% improved. The calcium content in purified water ranged from 6.8 to 12 mg/l.

scholarly journals DETERMINATION OF NECESSARY CONDITIONS FOR EFFICIENT PURIFICATION OF DRINKING WATER WITH HIGH CHLOROFORM CONTENT BY PLASMA TREATMENT IN AEROSOL

2021 ◽  
Vol 5 (33) ◽  
pp. 71-76
Author(s):  
Yu. Zabulonov ◽  
◽  
D. Charny ◽  
L. Odukalec ◽  
D. Yaroshchuk ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Purification ◽  
Negative Impact ◽  
Anthropogenic Factors ◽  
Anthropogenic Pressure ◽  
Regulatory Quality ◽  
Quality Of Water ◽  
Water State ◽  
Treatment Technologies

Sustainable development of any country is possible only if the stable supply of its population with drinking water in accordance with their needs, quantity and regulatory quality. This issue is extremely relevant for Ukraine as a low-water state, especially with the further negative impact of climatic and anthropogenic factors on the quality of source water. This is especially true of surface water sources in general and the Dnieper cascade of reservoirs in particular. The regulation of the Dnieper River, global warming and the increase in anthropogenic pressure in the form of a significant (at times) increase in polyphosphates and nitrogen compounds in the effluents entering the Dnieper River provokes catastrophic cyanide growth for four to five months a year. Outdated water treatment technologies are unable to combat this factor and use the only possible technological method for them to combat high organic matter of any genesis – increase the dose of chlorine and coagulants. This usually does not improve the quality of water purification, but leads to the sustainable formation of organochlorine compounds in the process of water purification and transportation. Chloroform is a constant marker of trihalogen methanes and its concentration is determined by water supply laboratories. Accordingly, we investigated the possibilities of oxidation of chloroform by means of complex oxides formed by corona discharge in a water-air medium in the mixing chamber of the ejector. The influence of medium pH on the process of chloroform destruction was studied. It has been experimentally established that even a weakly acidic environment does not allow the efficient oxidation of chloroform and leads to its recombination and even increases its concentration. At the same time, in an alkaline environment, the oxidation process is intense and with lower energy consumption.

scholarly journals PEMETAAN GEOHIDROLOGI DAERAH DONOROJO KABUPATEN PACITAN

2016 ◽  
Vol 10 (1) ◽  
pp. 54
Author(s):  
Teguh Prayogo
Keyword(s):  
Drinking Water ◽  
Population Growth ◽  
Water Supply ◽  
Ground Water ◽  
Field Condition ◽  
Human Life ◽  
Domestic Water ◽  
The Earth ◽  
Quality Of Water

Water is a component in the earth that is very important for human life. The availabilityof water is always wanted to meet a demand of water supply, such as for drinkingwater, washing, taking a bath, and etc. Along with population growth, so the need ofwater will be still increasing, including Tanah Datar. In this paper will be describedconcerning to characteristics, and condition of water in Pacitan Area, East JavaProvince, especially Donorojo district. This location occupies geographically betweenthe latitude of 00o17’ and 00o39’ south and the longitude of 100o19’ and 100o51’ eastBased on survey in field, condition of aquifer in Telaga Banta is located in 20 – 60meter depth, and the result of laboratory points to that the quality of water in thisarea meets the requirement for drinking water.The main uses of ground water include irrigation uses, drinking-water and otherpublic uses, and for supplying domestic water to people who do not receive publicsupply water. The majority of water used for self-supplied domestic and livestockpurposes came from ground-water sources.

scholarly journals The Water Safety Plan Approach: Application to Small Drinking-Water Systems—Case Studies in Salento (South Italy)

2021 ◽  
Vol 18 (8) ◽  
pp. 4360
Author(s):  
Francesca Serio ◽  
Lucia Martella ◽  
Giovanni Imbriani ◽  
Adele Idolo ◽  
Francesco Bagordo ◽  
...  
Keyword(s):  
Drinking Water ◽  
Case Studies ◽  
Distribution Systems ◽  
Water Systems ◽  
Water Safety ◽  
Quality Of Water ◽  
Safety Plan ◽  
Water Safety Plan ◽  
Drinking Water Systems

Background: The quality of water for human consumption is an objective of fundamental importance for the defense of public health. Since the management of networks involves many problems of control and efficiency of distribution, the Water Safety Plan (WSP) was introduced to address these growing problems. Methods: WSP was applied to three companies in which the water resource assumes central importance: five water kiosks, a third-range vegetable processing company, and a residence and care institution. In drafting the plan, the terms and procedures designed and tested for the management of urban distribution systems were applied to safeguard the resource over time. Results: The case studies demonstrated the reliability of the application of the model even to small drinking-water systems, even though it involved a greater effort in analyzing the incoming water, the local intended use, and the possibilities for managing the containment of the dangers to which it is exposed. This approach demonstrates concrete effectiveness in identifying and mitigating the dangers of altering the quality of water. Conclusions: Thanks to the WSP applied to small drinking-water systems, we can move from management that is focused mainly on verifying the conformity of the finished product to the creation of a global risk assessment and management system that covers the entire water supply chain.

Eternal engine of progress

2021 ◽  
pp. 41-45
Author(s):  
В.А. Гвоздев ◽  
Л.В. Леонов ◽  
О.Н. Рублевская
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Supply ◽  
Measurement System ◽  
Odor Control ◽  
Wastewater Disposal ◽  
Quality Of Water ◽  
Precipitation Measurement ◽  
General Director

Качество услуг водоснабжения и водоотведения за первые двадцать лет XXI века вывело на новый уровень развития ГУП «Водоканал Санкт-Петербурга» благодаря внедрению инновационных технологий в системах водоснабжения и водоотведения. Использование технологий, таких как двухступенчатое обеззараживание питьевой воды, дезодорирование полигонов, геотубирование, применение центрифуг «Флоттвег», порошкообразного однокомпонентного флокулянта, порошкообразного активированного угля, внедрение системы измерения осадков, осуществлялись при активном участии Федора Ивановича Лобанова – помощника генерального директора ГУП «Водоканал Санкт-Петербурга» по работе с промышленностью, которому в ноябре 2021 г. исполнилось 80 лет. The quality of water supply and wastewater disposal services over the first twenty years of the 21st century has brought SUE «Vodokanal of St. Petersburg» to a new level of development owing to the introduction of innovative technologies in water supply and wastewater disposal systems. The use of technologies, such as two-stage disinfection of drinking water, odor control of landfills, geotubing, the use of Flottweg centrifuges, powdered one-component flocculant, powdered activated carbon, the introduction of a precipitation measurement system, were carried out with the active participation of Fedor Ivanovich Lobanov, Assistant to the General Director of SUE «Vodokanal of St. Petersburg» on dealing with industries, who turned 80 in November 2021.

scholarly journals Assessment of bacteriological quality of drinking water from various sources in Amritsar district of northern India

2015 ◽  
Vol 9 (08) ◽  
pp. 844-848 ◽  
Author(s):  
Sita Malhotra ◽  
Shailpreet K Sidhu ◽  
Pushpa Devi
Keyword(s):  
Drinking Water ◽  
Human Consumption ◽  
Human Right ◽  
Safe Water ◽  
Bacteriological Quality ◽  
Northern India ◽  
Quality Of Water ◽  
The Government ◽  
High Level

Introduction: Safe water is a precondition for health and development and is a basic human right, yet it is still denied to hundreds of millions of people throughout the developing world. Water-related diseases caused by insufficient safe water supplies, coupled with poor sanitation and hygiene, cause 3.4 million deaths a year, mostly in children. Methodology: The present study was conducted on 1,317 drinking water samples from various water sources in Amritsar district in northern India. All the samples were analyzed to assess bacteriological quality of water for presumptive coliform count by the multiple tube test. Results: A total of 42.9% (565/1,317) samples from various sources were found to be unfit for human consumption. Of the total 565 unsatisfactory samples, 253 were from submersible pumps, 197 were from taps of piped supply (domestic/public), 79 were from hand pumps, and 36 were from various other sources A significantly high level of contamination was observed in samples collected from submersible pumps (47.6%) and water tanks (47.3%), as these sources of water are more exposed and liable to contamination. Conclusions: Despite continuous efforts by the government, civil society, and the international community, over a billion people still do not have access to improved water resources. Bacteriological assessment of all sources of drinking should be planned and conducted on regular basis to prevent waterborne dissemination of diseases.

scholarly journals Quality of water sources used as drinking water in a Brazilian peri-urban area

2011 ◽  
Vol 42 (2) ◽  
pp. 560-566 ◽  
Author(s):  
Maria Tereza Pepe Razzolini ◽  
Wanda Maria Risso Günther ◽  
Francisca Alzira dos Santos Peternella ◽  
Solange Martone-Rocha ◽  
Veridiana Karmann Bastos ◽  
...  
Keyword(s):  
Drinking Water ◽  
Urban Area ◽  
Water Sources ◽  
Quality Of Water

scholarly journals Rain water quality assessment as air quality indicator in Pakistan

2019 ◽  
Vol 54 (2) ◽  
pp. 161-168
Author(s):  
G Yaqub ◽  
A Hamid ◽  
S Asghar
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Air Quality ◽  
Water Quality Assessment ◽  
Rain Water ◽  
Domestic Water ◽  
Indirect Evaluation ◽  
Potential Use ◽  
Insight Into

Rain is an effective way for removing pollutants from the atmosphere. The present study was initiated to determine rain water quality for its safe use as potable water, as well as a tool for indirect evaluation of air quality of different study areas. A total of 20 rain water samples were collected from areas including Kasur, Sheikhupura, Gujranwala and Lahore. The pH (5.49 + 0.323), turbidity (12.267 + 5.933NTU), Cl- (4785 + 1458.32ppm) and F- (16.44 + 4.52ppm) contents of samples are not in compliance with drinking water quality limits (Pakistan, WHO). Average sulphate (1.396 + 0.384 ppm) and NO3 − concentrations (52.35 + 12.11ppm) varied between 1.005-2.05ppm and 36.79-81.3ppm, respectively. Heavy metals analysis showed presence of Cu, Co, Mn and Zn concentrations below WHO limits while Cd and Pb concentrations exceeded WHO limits with values ranging between 0.005ppm-0.017ppm and 19ppm-254ppm, respectively . Findings indicate that rain water can provide an insight into the air quality of an area and its potential use as an alternative to drinking water, especially in areas of short domestic water supply. Bangladesh J. Sci. Ind. Res.54(2), 161-168, 2019

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