Microbial Status and Water Quality for Some Domestic Roof Water Tanks in Sakaka City at Aljouf Region , KSA = الحالة الميكروبية و نوعية المياه لبعض خزانات المياه على الأسطح في مدينة سكاكا في منطقة الجوف - المملكة العربية السعودية

2015 ◽  
Vol 11 (1) ◽  
pp. 13-26
Author(s):  
Saleh Ahmed Rabeh ◽  
Hani Mohamed Awad Abdelzaher ◽  
Shaima Mohamed Nabil Moustafa
Keyword(s):  
Water Quality ◽  
Water Tanks ◽  
Microbial Status

scholarly journals A Study on the Water Quality for Efficient Management in the Water Tanks

2009 ◽  
Vol 18 (12) ◽  
pp. 1339-1347 ◽  
Author(s):  
Hyun-Geoun Park ◽  
Seung-Chul Ryu ◽  
Soo-Im Jun
Keyword(s):  
Water Quality ◽  
Efficient Management ◽  
Water Tanks

scholarly journals Statistical analysis of trihalomethanes in treated-water tanks: seasonality, local variability and correlations

2013 ◽  
Vol 13 (1) ◽  
pp. 41-49
Keyword(s):  
Water Quality ◽  
Statistical Analysis ◽  
Total Concentration ◽  
Waterborne Diseases ◽  
Raw Water ◽  
Operational Parameters ◽  
Significant Group ◽  
Water Tanks ◽  
Local Variability ◽  
By Products

Chlorine was accepted as an effective disinfectant for drinking water in early 1900s. Because of chlorination, chlorine has dramatically reduced the incidence of waterborne diseases. An unwanted side effect is the formation of harmful by-products upon chlorination. The most significant group of disinfection by-products formed during chlorination is the trihalomethanes (THMs). In this reason, European Union initiated the maximum contaminant level (MCL) of total concentration of THMs to 100 μg L-1. Because of this regulation, operational parameters of the WTP and raw water quality characteristics need to be studied in depth in order for THMs to be minimised. Statistical analysis is necessary for this purpose employing the parametric two-way ANOVA for the concentrations of chloroform (CHCl3) and dichlorobromomethane (CHCl2Br) and the analysis of variance on data ranks of chlorodibromomethane (CHClBr2) concentration. Chlorine dose, postchlorination, bromide levels, reaction temperature, reaction duration and dissolved organic carbon levels as well as pH of raw water, are the factors that affect the rate of THMs formation and the total THMs yield. Athens Water Supply and Sewerage Company (EYDAP SA), as the water supplier of a city with 3.5 million inhabitants, makes continuous attempts to improve water quality.

scholarly journals Sintasan benih ikan patin (Pangasius sp.) dengan perlakuan arang aktif cangkang sawit yang ditransportasikan dengan sistem tertutup

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Wisnu Murtiadji ◽  
Sulmin Gumiri ◽  
Renhart Jemi
Keyword(s):  
Water Quality ◽  
Activated Carbon ◽  
Survival Rate ◽  
Juvenile Fish ◽  
Survival Rates ◽  
Sem Analysis ◽  
Carbon Powder ◽  
Organic C ◽  
Water Tanks ◽  
And Control

One of common problem in fishing industry is a high mortality rate of juvenile fish during transportation. The present research aimed to study the characteristics of palm oil activated carbon and its effect on the changes of water quality that can improve the survival rate of juvenile catfish (Pangasius sp.). During study, juvenile catfish was transported for 48 hours by a simulation in the room with two different treatments: water tanks supplied with granulated and powder activated carbon and one control. Results of FTIR analysis showed that the activated carbon contained several functional groups such as Alkanes, Carboxylic Acid and Amina. Activated carbon element content resulted from the SEM analysis consisted of C, O, Si, N, Zr, Cu, Al and K. After transformed as activated carbon, we found that water and organic C contents in oil palm shell decreased and, reversely, the ash content increased. The study revealed that the activated carbon powder was better to improve survival rate of juvenile catfish and maintain water quality compared to granule ones where the survival rates after 48 hour transportation were 47,5%, 11% and 0% with treatments of powdered activated carbon, granulated activated carbon and control, respectively.

scholarly journals Drinking water quality in the Czech Republic

2009 ◽  
Vol 27 (No. 2) ◽  
pp. 80-87 ◽  
Author(s):  
J. Říhová Ambrožová ◽  
J. Hubáčková ◽  
I. Čiháková
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Czech Republic ◽  
Distribution Systems ◽  
Screening Methods ◽  
Water Tank ◽  
Quality Of Water ◽  
Secondary Air ◽  
Water Tanks

The quality of water has to be controlled and monitored by drinking water suppliers during all stages of the treatment process from the water sources to the end of distribution systems. The research, performed in Czech Republic from 2006 to 2008, deals with the assessment of the affect of water tanks on the quality of water supplied to consumers, specifically from various points of view: microbiological, biological and physic-chemical changes in water accumulation. Also studied was the influence of the air on the quality of accumulated water (secondary contamination), the influence of the structural layout and hydraulic ratios. In the project quick screening methods (paddle testers and BART<sup>TM</sup> tests) were applied in the collection of water samples and scrapings from wetted surfaces of water tanks. The results of the contamination degree discovered in the course of the project solution will serve as basic data for a scale that should evaluate the degree of water tank pollution as well as for resulting corrective measures or optimisation of water tank cleaning. The recommendations of limits for a scraping sample are based especially on the microbiological parameters. Secondary air contamination plays an important role in maintains of biologically stable water. Based on the number of microbial contamination discovered water tanks will be categorised and methods of suitable measures to be taken will be stipulated, operation optimisation as well as cleaning (schedule, methods and frequency of cleaning). The water quality in a storage tanks depends on their maintenance, e.g., to prevent the plaster falling on water surface, the use of antifungal surface coatings (prevention the growth of fungi on walls), the use of ceramics surface of reservoir walls, dark conditions (no windows or blue sheets) in all technological units, the prevention of dust fall out, the selection of suitable air condition and special air filters.

Human perception and efficacy of Carassius auratus on maintaining water quality in equine water tanks

2019 ◽  
Vol 76 ◽  
pp. 94
Author(s):  
D. Catalano ◽  
B. Heins ◽  
S. Missaghi ◽  
M. Hathaway ◽  
K. Martinson
Keyword(s):  
Water Quality ◽  
Carassius Auratus ◽  
Human Perception ◽  
Water Tanks

scholarly journals Researches Regarding the Use of Silver and Screen Printed Electrodes to the Improvement of the Drinking Water Quality from Rural Areas

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Alexandru CRISTEA
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Drinking Water ◽  
Thin Layer ◽  
Rural Areas ◽  
Antibacterial Properties ◽  
Total Content ◽  
Drinking Water Quality ◽  
Water Drinking ◽  
Water Tanks

Based on the antibacterial properties of the silver, some pieces of water drinking installation could be covered by thin layer of silver to enhance the drinking water quality. In the water tanks could be introduces activated pieces coverer by layers of silver such as: screens, grids, adjustable cylindrical rings, taps etc. The obtained waters were characterized by detecting by electrochemical way the heavy metals content and the total content of the microbial charge.

scholarly journals Seminal features and reproductive index of Thai tilapia (Oreochromis sp.) on different reproductive periods

2021 ◽  
Vol 43 ◽  
pp. e50828
Author(s):  
Rodrigo Diana Navarro ◽  
Sonia Maria Batista Alves ◽  
Thays Nogueira Lobo Ribeiro Ribeiro
Keyword(s):  
Water Quality ◽  
Light Microscope ◽  
Quality Parameters ◽  
Quality Factors ◽  
Intensive Farming ◽  
Good Ability ◽  
Four Seasons ◽  
Post Hoc ◽  
Water Tanks ◽  
Motility Rate

Learning about the biology of the species is essential to the success of intensive farming. This study aimed to evaluate the semen of Thai tilapia during the four seasons of the year and thereby analyze their reproductive indices. Thus, 60 breeding males of Tilapia were used and were randomly divided into four water tanks and fed with isoproteic and isocaloric feed. The experiment lasted 12 months, starting from October 2014 and ending on September 2015. Thus, it was possible to collect sperm material of animals during the four seasons, twice a month, as well as to evaluate the water quality parameters in the tanks (temperature, pH and dissolved oxygen). The semen was evaluated from a light microscope in an increase of 100 x, then was activated with water. Motility was measured subjectively in the light microscope, as well as the percentage of sperm showing progressive motility. The duration was evaluated with the addition of a timer. For analysis of the morphology of the semen, the test consisted of morphopathology observation of 100 sperm focused in various fields throughout the slide in the light microscope. Once obtained, these data were analyzed through ANOVA and Tukey test as post-hoc analysis, with the help of the software R Statistics. Water quality factors (temperature, pH and2 dissolved) were acceptable and during the 12 month period the sperm of tilapia (Oreochromis sp.) had a good ability for fertilization, seen that it performed below the average of the percentage of critical abnormalities, and quality was perceived by the parameters that also influence fertilization (motility rate, duration of motility and vigor).

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