| dc.description | Groundwater is an important source of freshwater for agriculture, drinking and
domestic uses in many regions of the world including Bangladesh. Demand of
groundwater has been increasing day by day for irrigation by bringing more
area under cultivation. As a drinking water, the bottled water market currently
has an average annual growth rate of 7.4% between 2002 and 2007, which is
parallel to the growth of this industry all over the world. Availability of
groundwater for irrigation has contributed to manifold increases in crop
productivity in Bangladesh. Increasing population, food insecurity, growing
economics and poor water management are putting unprecedented pressure on
the world’s freshwater resources (UNCSD, 2012). | en_US |
| dc.description.abstract | In this study, ground water Samples were collected and studied from
Baliadangi Upazilla, Thakurgaon, Bangladesh in dry seasons of the year 2014
and analyzed their quality and suitability for agricultural, industrial and drinking
purposes. To study the various physiochemical and microbiological parameters,
water samples were collected from 15 deep tube wells, 18 shallow tube wells,
and 17 hand tube wells. Analyses were included as pH, EC, TDS (Total
Dissolved Solids), cations (Ca2+, Mg2+, Na+
, K+
, Zn2+, Cu2+, Mn2+ and Fe3+),
anions (HCO3
-
, SO4
2-
, PO4
3-
and Cl-
) and also computed several variables such
as hardness, SAR (sodium adsorption ratio), SSP (soluble sodium percentage),
RSC (residual sodium carbonate), permeability index, permeability salinity,
Gibb’s ratio (Anion & Cation) and Kelly’s ratio to evaluate the suitability of
groundwater supply for specific use. Some correlations and compositional
relations were also evaluated. Overall we found that the groundwater samples
were acidic in nature (pH varied from 5.4 to 6.9) and could be suitable for
drinking, agricultural and industrial uses. According to TDS and SAR values,
all samples were classed as ‘freshwater’ and ‘excellent’ categories. The soluble
sodium percentage (SSP) of all the samples was under ‘excellent’ and ‘good’
classes. Regarding hardness maximum samples were within ‘soft’ class, some
were ‘moderately hard’ and only three samples (sample no. 18, 27 and 45) were
‘hard’. All samples were ‘suitable’ according to RSC. Based on the contents
Zn2+, Mn2+, Fe3+, SO4
2-
, NO3
-
and Cl-
, groundwater samples of the study area
were within the ‘safe’ limit for drinking. In comparison with the national and
international standards, the water sources of the study area (Baliadangi,
Thakurgaon) were within the safe limit and recommended for drinking,
agricultural, industrial and livestock use | en_US |
