Domestic appliances used for drinking water treatment not connected to water supply - Jug water filter systems - Safety and performance requirements, labeling and information to be supplied

2018 ◽  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Drinking Water Treatment ◽  
Water Filter ◽  
Performance Requirements ◽  
And Performance ◽  
Domestic Appliances

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.

Removal of pesticides during the drinking water treatment process at Florence water supply, Italy

1999 ◽  
Vol 48 (5) ◽  
pp. 177-185 ◽  
Author(s):  
O. Griffini ◽  
M. L. Bao ◽  
D. Burrini ◽  
D. Santianni ◽  
C. Barbieri ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Treatment Process ◽  
Drinking Water Treatment ◽  
Water Treatment Process

scholarly journals Novel helical or coiled flocculator for turbidity reduction in drinking water treatment: a performance study

2021 ◽  
Author(s):  
Gede H Cahyana
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Velocity Gradient ◽  
Drinking Water Treatment ◽  
Optimum Dose ◽  
Performance Study ◽  
Detention Time ◽  
Sediment Volume ◽  
Jar Test ◽  
And Performance

Helical or spiral coiled flocculator have not been applied in drinking water treatment yet in Indonesia. There were only a few articles discussed it with different themes like hydrodynamic, floc characteristic, and performance. This study was done to know the efficiency (performance) of helical flocculator with parameters velocity gradient, pipe and helical diameter, flowrate, detention time, coagulant dose. The study was divided into two steps: Jar test to determine the optimum dose of coagulant and flocculation experiments to evaluate the helical flocculator efficiency. Efficiencies were in the range of medium to high. On flowrate 13 ml/second was obtained good results for two pipe sizes but different in helical diameters. In 0.5 inch pipe with 0.8 m helical diameter the turbidity reduction efficiencies were 72.4% and 73.9% and sediment volume were 18.3 ml and 20.0 ml. In 0.625 inch pipe with 0.4 m helical diameter the turbidity reduction efficiencies were 76.7% and 78.5% and sediment volume were 14.3 ml and 19.7 ml. The optimum velocity gradient about 64.9–69.6 persecond and detention time about 438–649 seconds. The results showed that helical flocculator was effective for floc formation. Flowrate, pipe diameter, helical diameter were three key parameters to perform helical flocculator.

scholarly journals Long-Term Drinking Water Quality Assessment Using Index and Multivariate Statistical Analysis for Three Water Treatment Plants of Erbil City, Iraq

2018 ◽  
Vol 2 (2) ◽  
pp. 39-48
Author(s):  
Hayder Mohammed Issa ◽  
Reem Ahmed Alrwai
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Drinking Water Treatment ◽  
Drinking Water Quality ◽  
Total Alkalinity ◽  
Total Hardness ◽  
Water Treatment Plants

Safe source of drinking water is always considered as an essential factor in water supply for cities and urban areas. As a part of this issue, drinking water quality is monitored via a useful scheme: developing drinking water quality index DWQI. DWQI is preferably used as it summarizes the whole physicochemical and bacteriological properties of a drinking water sample into a single and simple term. In this study, an evaluation was made for three drinking water treatment plants DWTPs named: Efraz 1, Efraz 2 and Efraz 3 that supply drinking water to Erbil City. The assessment was made by testing thirteen physicochemical and two bacteriological parameters during a long period of (2003 – 2017). It has been found that turbidity, electrical conductivity EC, total alkalinity, total hardness, total coliform and fecal coliform have more influence on drinking water quality. DWQI results showed that the quality of drinking water supplied by the three DWTPs in Erbil City fallen within good level. Except various occasional periods where the quality was varying from good to fair. The quality of the drinking water supply never reached the level of marginal or poor over the time investigated. The applied hierarchical clustering analysis HCA classifies the drinking water dataset into three major clusters, reflecting diverse sources of the physicochemical and bacteriological parameter: natural, agriculture and urban discharges.

Identification, assessment, and control of hazards in water supply: experiences from Water Safety Plan implementations in Germany

2010 ◽  
Vol 61 (5) ◽  
pp. 1307-1315 ◽  
Author(s):  
H.-J. Mälzer ◽  
N. Staben ◽  
A. Hein ◽  
W. Merkel
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Drinking Water Treatment ◽  
Control Measures ◽  
World Health ◽  
Water Safety ◽  
Water Safety Plan ◽  
Health Organization ◽  
And Control

According to the recommendations of the World Health Organization (WHO) for Water Safety Plans (WSP), a Technical Risk Management was developed, which considers standard demands in drinking water treatment in Germany. It was already implemented at several drinking water treatment plants of different size and treatment processes in Germany. Hazards affecting water quality, continuity, and the reliability of supply from catchment to treatment and distribution could be identified by a systematic approach, and suitable control measures were defined. Experiences are presented by detailed examples covering methods, practical consequences, and further outcomes. The method and the benefits for the water suppliers are discussed and an outlook on the future role of WSPs in German water supply is given.

scholarly journals PERANCANGAN PENGOLAHAN AIR MINUM TENAGA SURYA KAPASITAS 50 M3/HARI (Dengan Menggunakan Proses Biofiltrasi Dan Ultrafiltrasi)

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Galih Setiaji ◽  
Nusa Idaman Said
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Power Plant ◽  
Water Supply ◽  
Solar Power ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Drinking Water Supply ◽  
Solar Power Plant ◽  
Remote Areas

Drinking water supply for public is big deals for the improvement of environmental and society health. An effort from the government to provide the drinking water supply is to provide a society based of drinking water treatment plant. Some obstacles that have come for the plant in remote areas are the difficulties of getting chemical material for the plant and the lack of energy supply. Drinking water treatment that use chemical materials has a big cost to provide the chemicals. Beside the high cost of treatment, the using of chemicals will harmful the drinking water, because it usually generates such carcinogenic materials. The biofiltration-ultrafiltration treatment is one of the best solutions to replace treatment plant that using chemicals. It has a low cost operation and is more safe than the water treatment that using chemicals. Generator-set (genset), a power generator that easy to get and operate, has uneconomical operation cost. By now, there were many studies proved that in remote areas, the using of Solar Power Plant is more economic than a genset. For those reasons, in this article is designed a solar powered 50 m3/Day drinking water treatment (biofiltration-ultrafiltration process). The result from the design is the solar power plant that can supply the treatment plant for 8 hours. Keywords: drinking water, solar power, genset, biofiltration, ultrafiltration.

State of the art in drinking water treatment by MF/UF in Germany—a survey among MF/UF plants

2008 ◽  
Vol 8 (4) ◽  
pp. 377-381 ◽  
Author(s):  
P. Lipp
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Membrane Filtration ◽  
State Of The Art ◽  
Drinking Water Treatment ◽  
Practical Experience ◽  
Research Project ◽  
Technical Data ◽  
Different Origin

Membrane filtration is increasingly used for treatment in drinking water supply in Germany. MF and UF are applied processes to remove particles from raw waters of different origin. In the frame of a research project founded by the German Gas-and Waterworks Association (DVGW), a survey has been undertaken among a number of 83 plants that were put into operation until the end of 2006. The aim of the project was to gather technical data and practical experience in a database which should help in the design of future MF/UF plants. In the present paper the most important outcome of this project will be described.

scholarly journals Towards a Sustainable Water Supply: Humic Acid Removal Employing Coagulation and Tangential Cross Flow Microfiltration

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2093 ◽  
Author(s):  
Mohammed Wali Hakami ◽  
Abdullah Alkhudhiri ◽  
Myrto-Panagiota Zacharof ◽  
Nidal Hilal
Keyword(s):  
Drinking Water ◽  
Humic Acid ◽  
Water Treatment ◽  
Water Supply ◽  
Lower Cost ◽  
Cross Flow ◽  
Drinking Water Treatment ◽  
Microfiltration Membrane ◽  
Treatment Practices ◽  
Sustainable Water Supply

Synthetic solutions assimilating irrigated groundwater containing varying concentrations of humic acid (10 mg/L), saline (10–35 g/L) and metal agents (5–10 mg/L), were processed through a ceramic microfiltration membrane (Sterilox Ltd., 0.5 μm). This was done with enrichment schemes using polymeric coagulants (PDADMAC) applied to enhance the removal of the above-mentioned pollutants. The study was conducted with the scope of investigating the feasibility of sequential and hybrid coagulation and microfiltration as a method of choice for drinking water treatment. Membrane microfiltration is easily scalable into various arrangements, allowing versatility in operation and enrichment schemes, with a relatively lower cost which other treatment practices do not allow. The highest humic acid removal, 91.11% was achieved with hybrid coagulation.

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