scholarly journals Groundwater quality and hydrogeological characteristics of Malacca state in Malaysia

2015 ◽  
Vol 24 (1) ◽  
pp. 11-19 ◽  
Author(s):  
Sharif Moniruzzaman Shirazi ◽  
Md. Ibrahim Adham ◽  
Noorul Hassan Zardari ◽  
Zubaidah Ismail ◽  
Hosen Md Imran ◽  
...  
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Discharge Capacity ◽  
Volcanic Rocks ◽  
Pumping Test ◽  
Peninsular Malaysia ◽  
Iron Chloride ◽  
Quality Analysis ◽  
Deep Aquifer ◽  
Hydrogeological Characteristics

Abstract Groundwater quality and aquifer productivity of Malacca catchment in Peninsular Malaysia are presented in this article. Pumping test data were collected from 210 shallow and 17 deep boreholes to get well inventory information. Data analysis confirmed that the aquifers consisting of schist, sand, limestone and volcanic rocks were the most productive aquifers for groundwater in Malacca state. GIS-based aquifer productivity map was generated based on bedrock and discharge capacity of the aquifers. Aquifer productivity map is classified into three classes, namely high, moderate and low based on discharge capacity. Groundwater potential of the study area is 35, 57 and 8% of low, moderate and high class respectively. Fifty two shallow and 14 deep aquifer groundwater samples were analyzed for water quality. In some cases, groundwater quality analysis indicated that the turbidity, total dissolved solids, iron, chloride and cadmium concentrations exceeded the limit of drinking water quality standards.

scholarly journals Impact of solid waste on water quality: a case study of Gokarna landfill site, Kathmandu

2004 ◽  
Vol 30 ◽  
Author(s):  
Dinesh C. Devkota ◽  
Kunio Watanabe ◽  
Vishnu Dangol
Keyword(s):  
Water Quality ◽  
Heavy Metal Concentration ◽  
Landfill Site ◽  
High Rate ◽  
Shallow Aquifer ◽  
Quality Analysis ◽  
Deep Aquifer ◽  
Shallow Wells ◽  
Dug Wells ◽  
Domestic Use

The Gokarna landfill site (GLS) was in operation between 1986 and 1996. At present, there is a high risk of shallow aquifer contamination owing to the absence of a barrier layer and a high rate of leachate in now from the landfill site. About 20 m thick sandy bed is transmitting pollutants to the shallow aquifer. The water quality analysis of shallow wells, dug wells and springs around the GLS carried out between November 2003 and March 2004 revealed that they are polluted by the leachate. The heavy metal concentration, chlorides, iron as well as BOD and COD values depicted their increasing trend. Likewise, the microbial contamination was also high, and the water was unsuitable for domestic use. However, there is a low probability of contaminating the deep aquifer owing to the presence of impermeable layers of silt and clay above it. On the other hand, the amount of pollutants in the leachate has decreased significantly in recent years, especially after 1996.

scholarly journals Impact of river bank filtration on alluvial groundwater quality: A case study of the Velika Morava River in central Serbia

2015 ◽  
pp. 85-91
Author(s):  
Branislav Petrovic ◽  
Vladimir Zivanovic
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Groundwater Quality ◽  
Iron Chloride ◽  
Aquifer Recharge ◽  
River Bank ◽  
Morava River ◽  
Groundwater Source ◽  
Nitrates Content

Alluvial aquifers are preferred sites for drinking water production. Riverbed sediments and saturated alluvial sediments have great potential for groundwater purification which is essential for preserving the stability of the groundwater quality. Conducted research in the area of groundwater source Brzan in central Serbia showed that intergranular aquifer has potential not only to purify polluted surface water but also to enrich water quality. Main aquifer recharge is infiltration of surface water from the Velika Morava River. The quality of surface water is very variable, especially for some components such as turbidity, conductivity, KMnO4 consumption, and iron, chloride and nitrates content. On the other hand, the quality of groundwater is characterised with minimal oscillation particularly regarding mentioned components. Based on numerous results on surface and groundwater quality we can conclude that water from the groundwater source Brzan is with good quality and can be used for drinking consumption with minimal treatment despite the fact that aquifer is in strong hydraulic connection with the Velika Morava River. Improvement of water quality is result manly of water filtration through river bad sediments and aquifer body.

Investigation of Groundwater Potential in Melaka District of Malaysia

2011 ◽  
Vol 243-249 ◽  
pp. 4553-4556
Author(s):  
S.M. Shirazi ◽  
Imran Hosen ◽  
Mohammad Sholichin ◽  
Shatirah Akib
Keyword(s):  
Discharge Rate ◽  
Shallow Groundwater ◽  
Pumping Test ◽  
Groundwater Potential ◽  
Peninsular Malaysia ◽  
Deep Groundwater ◽  
Deep Aquifer ◽  
Data Set ◽  
Deep Boreholes

The paper assesses groundwater quality and productivity in Melaka, Peninsular Malaysia. 238 data set shallow boreholes, 20 data set deep boreholes were collected and continuous pumping test data were used to determine productivity of the aquifers. 68 water samples were tested for water quality. The productivity of the wells and the characteristics of the aquifer were evaluated by pumping test using both the constant discharge rate and steps drawdown methods. The potential of shallow groundwater is low with average discharge <5 m3/hour. The potential of deep groundwater is high category with average discharge > 20 m3/hour. The results show that 32% (538 km2) from total area of Melaka district (1650 km2) is low potential categories, 56% (922 km2) is moderate and 12% (194 km2) is high. Based on the chemical data, the quality of deep aquifer is fresh. Therefore, it is available for drinking water with minimum treatment.

scholarly journals Hydrogeological and Hydrochemical Regime Evaluation in Flamouria Basin in Edessa (Northern Greece)

Environments ◽  
2020 ◽  
Vol 7 (12) ◽  
pp. 105
Author(s):  
Matthias Bannenberg ◽  
Maria Margarita Ntona ◽  
Gianluigi Busico ◽  
Kyriaki Kalaitzidou ◽  
Manassis Mitrakas ◽  
...  
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Soil Salinization ◽  
Anthropogenic Sources ◽  
Quality Analysis ◽  
Agricultural Activity ◽  
Northern Greece ◽  
Porous Aquifer ◽  
High Alkalinity ◽  
Total Dissolved Solid

Groundwater quality deterioration and overexploitation constitute two critical environmental issues worldwide. In this study, with the aim to achieve a groundwater sustainability purpose, a preliminary hydrogeochemical survey is conducted in the Flamouria basin, Pella prefecture, Northern Greece using available and collected data. For this purpose, chemical analyses of groundwater, springs, and surface water were collected and analyzed with three electrical resistivity tomographies (ERTs). A Groundwater Quality Index (GQI), along with a nitrate susceptibility assessment is applied within the porous aquifer. The water quality analysis along with GQI application showed excellent water quality for potable and irrigation use however highlighted future issue for irrigation utilization as the high alkalinity and total dissolved solid (TDS)could generate excessive soil salinization. Moreover, the application of a methodology for the identification of “Nitrate Vulnerable Zone” called the Protection from Natural and Anthropogenic sources (PNA) highlighted the natural susceptibility to nitrate pollution of the porous aquifer, especially in the central part of the area where most agricultural activity is localized. The work further confirmed how the proposed elaboration could represent an easy and widely applicable hydrological assessment where there is also limited data available.

scholarly journals Groundwater Quality Assessment near an Open Dump Municipal Solid Waste Disposal Site in Ekiti State, Southwestern Nigeria

2019 ◽  
pp. 1-8
Author(s):  
E. A. Okunade ◽  
M. S. Awopetu ◽  
A. Bolarinwa
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Municipal Solid Waste ◽  
Groundwater Quality ◽  
Solid Waste ◽  
Iron Chloride ◽  
Drinking Water Quality ◽  
Disposal Site ◽  
Tube Wells

This study assessed groundwater quality around an open dump municipal solid waste (MSW) disposal site at Ilokun, a village on the outskirts of Ado-Ekiti, Ekiti State, Nigeria. Three geotechnical boreholes and three water boreholes (tube wells) were drilled at intervals of 15m, 30m and 45m away from the disposal site. Soil samples were obtained near the top and at the bottom of the geotechnical boreholes. Tests carried out on these samples included the sieve analysis, specific gravity, bulk density, natural moisture contents, Atterberg limits, linear shrinkage, and hydraulic conductivity tests, and these were used to index and classify the soils at the landfill dumpsite. It was discovered that the soils belonged to the clay and clayey-sand USCS groups (CL and SC mainly). Groundwater samples were taken from the three water boreholes (tube wells), and physical, chemical and microbiological investigations carried out on the water samples and on water obtained from an existing hand-dug well in the neighbourhood of the dumpsite. The parameters obtained from the tests on the samples were compared with the Guidelines for Drinking Water Quality of the World Health Organisation (WHO) and the Nigerian Standard for Drinking Water Quality of the Standards Organisation of Nigeria. The water quality parameters determined included: the acidity (pH), temperature, electrical conductivity (EC), colour and odour, turbidity, dissolved oxygen (DO), biochemical oxygen demand (BOD), total dissolved solids (TDS), total hardness (TH), and contents of the constituents such as total iron, chloride, sulphate, nitrate, etc. The microbiological characteristics determined are the Total Bacterial Count (Total coliform count), and the presence of Faecal streptococci, Staphylococcus aeurus and Escherichia coli. It was discovered that the groundwater at the dumpsite has been heavily contaminated and unfit for human consumption or usage without appropriate treatment to render them potable and fit for domestic use.

GEOPHYSICAL AND WATER QUALITY INDEX SURVEYS OF GROUNDWATER QUALITY AROUND UGBOR DUMPSITE IN BENIN CITY, EDO STATE, NIGERIA, WEST AFRICA.

2016 ◽  
Vol 12 (3) ◽  
pp. 4383-4393
Author(s):  
Osabuohien Idehen
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Dry Season ◽  
Depth Range ◽  
Benin City ◽  
Physico Chemical ◽  
Vertical Electric Sounding ◽  
Geoelectric Layer

This study takes a look into groundwater quality at Ugbor Dumpsite area using water quality index (WQI), 2-Dimensional (2-D) geophysical resistivity tomography and vertical electric sounding (VES).The geophysical resistivity methods employed revealed the depth to aquifer, the geoelectric layers being made up of lateritic topsoil, clayed sand and sand. Along the trasverse line in the third geoelectric layer of lateral distance of 76 m to 100 m is a very low resistivity of 0.9 to 13 m from a depth range o f about 3 to 25 m beneath the surface- indicating contamination. Water samples were collected and analyzed at the same site during the raining season and during the dry season. The value of water quality index during the raining season was 115.92 and during the dry season was 147.43. Since values at both seasons were more than 100, it implies that the water is contaminated to some extent and therefore poor for drinking purpose. The Water Quality Index was established from important analyses of biological and physico-chemical parameters with significant health importance. These values computed for dumpsite area at Ugbor were mostly contributed by the seasonal variations in the concentrations of some parameters, such as, conductivity, total dissolved solids, hardness, alkalinity, chlorides, nitrates, calcium,  phosphates, zinc, which showed significant differences (P<0.01 and P<0.05) in seasonal variation.

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