A Study on Water Quality Parameters of Water Supply in Sylhet City Corporation Area

Water Quality Index (WQI) is a dimensional number that aggregates information from many water quality parameters according to a defined method. WQI is accepted as an efficient tool for water quality management. In this study, WQI of Saigon river for public water supply was calculated from nine water quality parameters including pH, suspended solids (SS), dissolved oxygen (DO), chemical oxygen demand (COD), nitrite, ammonia, phosphate, total dissolved iron and total coliform based on water quality data obtained monthly from January 2016 to December 2019 at three sampling sites. The results showed that most of WQI values belonged to class III (medium water quality with the WQIs of 35 – 64) and class IV (poor water quality with the WQIs of 11 – 34) and a deteriorating trend was observed from upstream to downstream of Saigon river. The river water quality could not be used for public water supply.

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Investigating the occurrence of algae in the drinking water supply system of Harare, Zimbabwe

Journal of Water Sanitation and Hygiene for Development ◽

10.2166/washdev.2020.102 ◽

2020 ◽

Vol 10 (2) ◽

pp. 179-190

Author(s):

Pardon Dandadzi ◽

Zvikomborero Hoko ◽

Tamuka Nhiwatiwa

Keyword(s):

Water Quality ◽

Drinking Water ◽

Water Treatment ◽

Water Supply ◽

Distribution System ◽

Quality Parameters ◽

Supply System ◽

Water Quality Parameters ◽

Residual Chlorine ◽

Raw Water

Abstract This study assessed the quality of drinking water in the water supply system for the City of Harare (Zimbabwe) by investigating the occurrence of algae and other water quality parameters that affect its growth. At Morton Jaffray Water Treatment Works (MJWTWs), samples were collected from the raw water inlet and treated water outlet points. In the distribution system, samples were collected from selected sites and grouped into four zones (1, 2, 3 and 4). The algal taxonomic groups that were found in both raw and treated water comprised of Cyanophyceae, Chlorophyceae, Bacillariophyceae, Euglenophyceae and Dinophyceae. It was found out that Microcystis aeruginosa followed by Anabaena were the most abundant species in both raw water and in the distribution system. All measured water quality parameters were within the Standards Association of Zimbabwe and WHO guideline values except for chlorine which had an average residual chlorine concentration that was lower than the WHO recommended lower value of 0.2 mg/L in parts of Zone 2. Morton Jaffray Water Treatment Works does not completely remove algae, and there is a carry-over of algae into the distribution system. Boosting of chlorine is recommended for Zone 2 that had residual chlorine less than the WHO minimum threshold of 0.2 mg/L.

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Occurrence of trihalomethane in relation to treatment technologies and water quality under tropical conditions

H2Open Journal ◽

10.2166/h2oj.2018.007 ◽

2018 ◽

Vol 1 (1) ◽

pp. 69-83

Author(s):

A. A. G. D. Amarasooriya ◽

S. K. Weragoda ◽

M. Makehelwala ◽

R. Weerasooriya

Keyword(s):

Water Quality ◽

Water Supply ◽

Quality Parameters ◽

Water Quality Parameters ◽

Residual Chlorine ◽

Treatment Technology ◽

Tropical Conditions ◽

Treatment Technologies ◽

Resident Time ◽

By Products

Abstract Distribution of most prevalent disinfection by-products, trihalomethanes (THMs) in relation to treatment technology and common water quality parameters (turbidity, conductivity, color, pH, and residual chlorine) was examined for two water supply schemes (WSS) in Sri Lanka (locations: Greater Kandy-WSS (GKWSS) (80.56–80.66 °E, 7.28–7.38 °N) and Kandy South-WSS (KSWSS) (80.49–80.63 °E, 7.21–7.30 °N). In both treatment plants, only CHCl3 and CHCl2Br were detected in appreciable concentrations and total THMs (TTHMs) values were well below the WHO limits (80 μg/L). TTHMs variations ranged from 0 to 16 μg/L and 0 to 54 μg/L in GKWSS and KSWSS, respectively. Highest TTHM value (54 μg/L) was found in KSWSS which employs pulsation treatment technology. Correlations between CHCl3 and CHCl2Br in both water schemes are noteworthy, but THM levels relate to most of the water quality parameters ambiguously. However, a distinct relationship is observed between THM levels and degree of chlorination, resident time, pipeline corrosion, and temperature. THM formation increased towards the boundaries of most of the sub-water supply schemes (SWSS).

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Assessment of the Ecological Status of OPA Reservoir, ILE IFE, Nigeria Based on a Comparative Study of its Planktonic Community and Water Quality Parameters

Open Academic Journal of Advanced Science and Technology ◽

10.33094/5.2017.2020.41.1.14 ◽

2020 ◽

Vol 4 (1) ◽

pp. 1-14

Author(s):

Adebukola A Adedeji ◽

Taiwo A Adesakin ◽

Oluseun P Bolawa

Keyword(s):

Water Quality ◽

Comparative Study ◽

Ecological Status ◽

Quality Parameters ◽

Water Quality Parameters ◽

Planktonic Community

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Investigation of Some Water Quality Parameters of Pond Water under Mymensingh Municipality

Journal of Environmental Science and Natural Resources ◽

10.3329/jesnr.v8i1.24677 ◽

2015 ◽

Vol 8 (1) ◽

pp. 85-89

Author(s):

F Zannat ◽

MA Ali ◽

MA Sattar

Keyword(s):

Water Quality ◽

Water Samples ◽

Chemical Properties ◽

Pond Water ◽

Quality Parameters ◽

Water Quality Parameters ◽

Urban Region ◽

Mn Toxicity ◽

Ph Values ◽

Drinking Water Standard

A study was conducted to evaluate the water quality parameters of pond water at Mymensingh Urban region. The water samples were collected from 30 ponds located at Mymensingh Urban Region during August to October 2010. The chemical analyses of water samples included pH, EC, Na, K, Ca, S, Mn and As were done by standard methods. The chemical properties in pond water were found pH 6.68 to 7.14, EC 227 to 700 ?Scm-1, Na 15.57 to 36.00 ppm, K 3.83 to 16.16 ppm, Ca 2.01 to 7.29 ppm, S 1.61 to 4.67 ppm, Mn 0.33 to 0.684 ppm and As 0.0011 to 0.0059 ppm. The pH values of water samples revealed that water samples were acidic to slightly alkaline in nature. The EC value revealed that water samples were medium salinity except one sample and also good for irrigation. According to drinking water standard Mn toxicity was detected in pond water. Considering Na, Ca and S ions pond water was safe for irrigation and aquaculture. In case of K ion, all the samples were suitable for irrigation but unsuitable for aquaculture.J. Environ. Sci. & Natural Resources, 8(1): 85-89 2015

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Assessement of Water Quality Parameters in Some Potential Pollutant Areas from Romania

Revista de Chimie ◽

10.37358/rc.18.8.6470 ◽

2018 ◽

Vol 69 (8) ◽

pp. 2045-2049

Author(s):

Catalina Gabriela Gheorghe ◽

Andreea Bondarev ◽

Ion Onutu

Keyword(s):

Water Quality ◽

Surface Water ◽

Surface Water Quality ◽

Quality Parameters ◽

Water Quality Parameters ◽

Quality Data ◽

Chemical Parameters ◽

Water Quality Data ◽

Pollutant Sources ◽

Water Quality Forecasting

Monitoring of environmental factors allows the achievement of some important objectives regarding water quality, forecasting, warning and intervention. The aim of this paper is to investigate water quality parameters in some potential pollutant sources from northern, southern and east-southern areas of Romania. Surface water quality data for some selected chemical parameters were collected and analyzed at different points from March to May 2017.

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Influence of Discharges from Storage Reservoirs on the Tastes and Odours Appearing in the Seine and Marne Rivers

Water Science & Technology ◽

10.2166/wst.1982.0086 ◽

1982 ◽

Vol 14 (4-5) ◽

pp. 43-58 ◽

Cited By ~ 1

Author(s):

M Rizet ◽

J Mouchet

Keyword(s):

Water Quality ◽

Quality Parameters ◽

Water Quality Parameters ◽

Severe Drought ◽

Storage Reservoirs ◽

Metabolite Concentrations

This study was conducted in order to understand the taste and odour problems that occurred in the Seine and the Marne rivers during the severe drought of 1976. Samples were taken every 15 days from several locations in the rivers themselves and from storage reservoirs upstream from Paris. Algae and actinomycetes were identified and counted. Metabolite concentrations were measured. These data were correlated with threshold odor numbers and bacteriological water quality parameters.

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