scholarly journals Health impact linked to the use of water of questionable microbiological quality in the town of Nkolafamba (Center, Cameroon)

2021 ◽  
Vol 2 (2) ◽  
pp. 043-051
Author(s):  
Samuel - Davy- Baleng ◽  
Olive -Vivien –Noah/Ewoti ◽  
Ernest Koji ◽  
Antoine Tamsa /Arfao ◽  
Luciane - Marlyse – Moungang ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Microbiological Quality ◽  
Health Impact ◽  
Household Waste ◽  
Monthly Income ◽  
Treatment Techniques ◽  
The Status ◽  
The Town ◽  
Water Borne

A study was carried out in order to assess the health impact linked to the untreated use of water from the watercourse in the town of Nkolamfamba by the neighboring populations. The surveys were conducted on the entire population taking into account the status of the respondent, his responsibility in the family, his level of education. In a questionnaire, after identifying the respondents, the points considered were knowledge of the management of solid and liquid household waste, the supply of drinking water, the health and environmental impact linked to the use of untreated water. The results of the surveys were codified and processed by statistical analyzes using SPSS version 16 software. 0 in order to establish the links between the health risks recorded and the microbiological quality of the water used. It shows positive and very significant correlations (P <0.01) between the type of activity carried out and the treatment of water before consumption, between the source of supply and the treatment with bleach, between monthly income and water supply, between the interviewee's neighborhood and the water treatment before consumption. Positive and significant correlations (P <0.05) were observed between the source of water supply and water-borne diseases, the source of water supply and knowledge of water quality, water-borne diseases and water treatment before consumption. However, a significant but negative correlation was observed between monthly income and bleach treatment. The populations of the locality of Nkolafamba should be sensitized on water treatment techniques.

Use of the HDS System (Hydric Depuration with Soils) Associated to Other Constructed Wetlands Techniques for Public Water Supply

1999 ◽  
Vol 40 (3) ◽  
pp. 203-210
Author(s):  
E. Salati ◽  
E. Salati ◽  
E. Salati ◽  
S. M. Tauk-Tornisielo ◽  
D. F. Brega ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Constructed Wetlands ◽  
Pilot Project ◽  
Sao Paulo ◽  
Public Water Supply ◽  
São Paulo ◽  
Experimental Station ◽  
Water Treatment Station ◽  
The Town

Two projects of water treatment for public water supply were developed and operated by using combined systems of constructed wetlands. One of the projects was carried out in the town of Analândia, São Paulo, Brazil and wetlands with floating aquatic plants associated to the HDS system were used. Nearly 6,480 inhabitants were supplied. The other conducted project was an experimental station in partnership with SABESP (São Paulo State Sanitation Agency / Brazil), for the pretreatment of 1,700 l.s−1 of waters from the Cotia River, which is used for the population's supply after conventional treatment at the Lower Cotia Water Treatment Station. For this pilot project, wetlands with emergents and floating plants associated to the HDS system were used. The proposed objectives were achieved in both projects.

Damages caused by Polish cavalry in Tyszowce starosty in 17th-18th century

2013 ◽  
Vol 67 (1) ◽  
Author(s):  
Janusz Adam Frykowski
Keyword(s):  
18Th Century ◽  
Financial Capacity ◽  
The People ◽  
The Status ◽  
The Town ◽  
Crown Lands ◽  
Negative Phenomena

SUMMARYNon-city starosty of Tyszowce was located in the province of Belz and received the status of royal land in 1462. Its territory included the town of Tyszowce and villages: Mikulin, Perespa, Klatwy and Przewale. In the seventeenth and eighteenth centuries the starosty suffered from a significant increase of various negative phenomena. The crown lands had bitterly tasted devastating fires, epidemics, contributions, requisitions, robberies and field devastations. All these disasters were caused mainly by war and military activities. Marches of soldiers and quartering of troops greatly contributed to the situation and were usually associated with the need of maintaining the soldiers. The requisitions of food, alcohol, cattle, horses and poultry were particularly burdensome for the people. The greatest economic devastation as regards the resources of the starosty and its people was caused by monetary contributions, usually several times higher than the financial capacity of the town and its inhabitants. This work focuses on damages to the starosty caused by the royal cavalry. According to the literature, it is clear that the behavior of the troops in Tyszowce Starosty was not different from the behavior of soldiers in other areas of Poland. It must be admitted that the reprehensible behavior of the army was influenced by many conditions, from the recruitment of people from backgrounds often involving conflict with law, as well as foreigners, to the accommodation system under which the soldiers were forced to supply themselves “on their own.”

APPLICATION OF SODA IN STABILIZATION WATER TREATMENT IN REVERSE CYCLES OF WATER SUPPLY OF GAS-CLEANED UNITS OF BOFS

2019 ◽  
pp. 51-60
Author(s):  
S.I. Epshtein ◽  
◽  
S.E. Nikulin ◽  
Yu.A. Shliakhova ◽  
A.I. Kondratenko ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply

Microbiological quality of residues from drinking water preparation

1995 ◽  
Vol 31 (5-6) ◽  
pp. 75-79 ◽  
Author(s):  
M. Würzer ◽  
A. Wiedenmann ◽  
K. Botzenhart
Keyword(s):  
Waste Water ◽  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Water Treatment ◽  
Pathogenic Bacteria ◽  
Waste Water Treatment ◽  
Microbiological Quality ◽  
Detection Limits

In Germany the application of procedures such as flocculation and filtration in the preparation of drinking water results in the annual production of an estimated 500,000 t of sediments and sludges. Some of these residues have a potential for being reused, for example in agriculture, forestry, brickworks or waste water treatment. To assess the microbiological quality of residues from waterworks methods for the detection of enterobacteria, Escherichia coli, Salmonella, Pseudomonas aeruginosa, Legionella, poliovirus, Ascaris suis eggs and Cryptosporidium have been evaluated regarding their detection limits and were applied to various residues from German waterworks. Results show that sediments and sludges may contain pathogenic bacteria, viruses and protista. When residues from waterworks are intended to be reused in agriculture or forestry the microbiological quality should therefore be considered.

Enhanced rapid gravity filtration and dissolved air flotation for pre-treatment of river thames reservoir water

1998 ◽  
Vol 37 (2) ◽  
pp. 35-42 ◽  
Author(s):  
M. J. Bauer ◽  
R. Bayley ◽  
M. J. Chipps ◽  
A. Eades ◽  
R. J. Scriven ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
21St Century ◽  
Reservoir Water ◽  
Dissolved Air Flotation ◽  
Lowland Rivers ◽  
Air Flotation ◽  
Pre Treatment ◽  
Counter Current ◽  
Dissolved Air

Thames Water treats approximately 2800Ml/d of water originating mainly from the lowland rivers Thames and Lee for supply to over 7.3million customers, principally in the cities of London and Oxford. This paper reviews aspects of Thames Water's research, design and operating experiences of treating algal rich reservoir stored lowland water. Areas covered include experiences of optimising reservoir management, uprating and upgrading of rapid gravity filtration (RGF), standard co-current dissolved air flotation (DAF) and counter-current dissolved air flotation/filtration (COCO-DAFF®) to counter operational problems caused by seasonal blooms of filter blocking algae such as Melosira spp., Aphanizomenon spp. and Anabaena spp. A major programme of uprating and modernisation (inclusion of Advanced Water Treatment: GAC and ozone) of the major works is in progress which, together with the Thames Tunnel Ring Main, will meet London's water supply needs into the 21st Century.

scholarly journals Addressing the challenges in projects of water treatment plants and storage of potable water: a case studies of the water supply system in the state of Goiás, Brazil

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Anne Louise de Melo Dores ◽  
Felipe Corrêa Veloso dos Santos
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Water System ◽  
Treatment Phase ◽  
Water Treatment Plant ◽  
Operating Efficiency ◽  
Water Supply Systems ◽  
Storage Tanks ◽  
Variation Curve

AbstractTo elaborate efficient and economical water supply systems is one of the main objectives in the sanitation companies water system projects. In order to address the challenges faced in reaching this objective, this study aims to identify, first, the relation between the percentage of non-conformed samples in treated water and the inefficiency of the filtering units installed in the water treatment plant, and second, if, by drawing the consumption variation curve it is the most efficient way to predict the storage tanks volume—comparing necessary capacity, determined by the consumption curve, and installed capacity, predict by the outdated Brazilian normative. In order to reach answers for these two questions, this study measured the operating efficiency of the treatment plant as well as have set a quantitative comparison between the two dimensioning criteria for storage tanks volume present in the literature. As a result, the analysis provided the authors to detect a focus of contamination in the single-layered filtering units, limited by the filtering capacity of 2–6 m3/(m2 day), whilst operating at 333.13 m3/(m2 day). As well as to detect by the drawing of the consumption variation curve an oversize of 68% and 60% in the dimensioning of the studied storage tanks. With the results provided by this analysis approach, it was possible to efficiently detect and correct critical impairments in the treatment phase and to conclude that a long-term analysis should be drawn in order to affirm if the consumption variation curve is the best design methodology for the reservoirs.

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 Impacts of Gender Differences on Women’s Participation in Community Work in Abbay Chomman Woreda, Ethiopia

2019 ◽  
Vol 13 ◽  
pp. 86-118
Author(s):  
RATA B KENEA
Keyword(s):  
Economic Empowerment ◽  
Research Approach ◽  
Community Work ◽  
Quantitative And Qualitative Research ◽  
Women's Participation ◽  
Participation Of Women ◽  
The Status ◽  
The Difference ◽  
The Town ◽  
Status Of Women

Though the participation of women in economic development and community work usually realized low as a whole due to various reasons, the contribution of gender in creating the difference in terms of their status even among the participatory women is untouched area. For instance, the research conducted by Atinafu Diga (2013) on assessment of economic empowerment of women the related studies entitled Assessment of economic empowerment of Women in Kolobo kebele, Abay chomman Woreda dealt with only inadequate economic empowerment problems and low participation of Women in educational leadership areas respectively as their overall findings. As a result, this study is undertaken to assess the status of women disparity to participate in community work in case of kolobo kebele, Ambo town, Oromia Regional State; Ethiopia.This study is descriptive in nature. For this particular study, both quantitative and qualitative research approach were employed. In doing this research paper, of the total population,79 samples were selected from the town selected using simple random and purposive sampling techniques. Here, 79 were responded for the 20 close-ended questions of the questionnaire and another 10 were responded for open-ended questions of the interview. To analyses the quantitative data, techniques such as tabulation, percentages, and numerical figures were employed to. On the other hand, Narration and comparative discussion were covered to analyse the qualitatively collected data.

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