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Feasibility of Underground Water for Fish Culture in the Southern Region of Bangladesh: a Case Study from Laxmipur and Chittagong Area

Md. Shakhawate Hossain
Department of Fisheries Biology and Aquatic Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Bangladesh

Riaz Hossain Khan
Deapartment of Environmental Science, Patuakhali Science and Technology University, Bangladesh

Ayesha Akter
Deapartment of Emergency Management, Patuakhali Science and Technology University, Bangladesh

Abstract/ Executive Summary:

Water quality and quantity vary from place to place, and are affected by ecological factors such as soil and air quality. In these study; experiment were conducted to measure and compare the water quality parameter of underground water in the southern districts of Bangladesh. Water quality parameters such as temperature (oC), pH and dissolved oxygen (mgL^-1), alkalinity, hardness, different ion such as sodium, chlorine, nitrate-nitrite and iron were measured and compared with required parameter for fish culture. In this experiment water quality parameters of underground water were found more likely similar or in acceptable range for fish culture except DO, salinity and concentration of iron in few sampling point locations. Salinity in groundwater were observed slightly higher than surface water bodies. Problem of DO and iron can be mitigated by the use of aerator. Aeration helps to increase oxygen content of water as well as precipitate the iron. On a whole, groundwater is considered more desirable for aquaculture because it has more consistent water quality than surface water, and is less likely to be contaminated by pathogens.

Keywords: Feasibility, Underground water, Fish culture, Bangladesh, Laxmipur, Chittagong.

Location: Department of Fisheries Biology and Aquatic Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University

Start Date: 01-02-2010

End Date: 28-02-2010

Program Area: Crop-Soil-Water Management

Commodity: Water quality

Objectives:

1. To measure the suitability of underground water for fish culture.

Methodology:

Twenty-eight numbers of groundwater samples were collected in February 2010 from both shallow and deep tubewells at the studied area. Two 250ml PVC bottles were used for sampling. During sampling, 0.45 μm membrane filters was used to filter groundwater samples in order to remove colloidal material and other unwanted particles from the water samples. One bottle of sample was acidified to measure the cations especially to avoid the precipitation of dissolved heavy metals using concentrated HCL by lowering the pH value to less than 3 and another unacidified sample was used to measure the anions. A GARMIN 12 channel GPS was used to record the geographic location of the sampling points. Electrical Conductance (EC), Total Dissolved Solid (TDS), pH, Temperature and Dissolved Oxygen were recorded for each sample on the spot using portable EC-meter, pH-meter and DO meter respectively. The concentrations of Na+ and K+ ions of the samples were determined by using Jenway PFP7 Flame Photometer. Ca2+, Mg2+, Fe2+ and Mn2+ concentrations were determined by using Spectrosonic GENESYS5 spectrophotometer. HCO₃ and Cl- concentrations were determined by titration method.

Source of Information: J. Agrofor. Environ. 5 (2): 121-123, 2011; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Water quality parameters such as temperature (oC), pH and dissolved oxygen (mgL^-1), alkalinity, hardness, different ion such as sodium, chlorine, nitrate-nitrite and iron were measured and compared with required parameter for fish culture. In this experiment water quality parameters of underground water were found more likely similar or in acceptable range for fish culture except DO, salinity and concentration of iron in few sampling point locations. Salinity in groundwater were observed slightly higher than surface water bodies. Problem of DO and iron can be mitigated by the use of aerator. Aeration helps to increase oxygen content of water as well as precipitate the iron. On a whole, groundwater is considered more desirable for aquaculture because it has more consistent water quality than surface water, and is less likely to be contaminated by pathogens.

Knowledge Management: Journal