1.To detect the various types of toxic elements and their concentration in tannery effluent
2.To find out the physico-chemical characteristics of the tannery effluent.
3.To recommend some suggestions for minimizing toxic elements in the effluent
LIMITATIONS
Due to the limitation of time and lack of financial support more details analysis were not possible. The analysis of chromium was not possible due to the lack of laboratory facilities.
METHODOLOGY
Selection of the study area: Shaikh Akij and Family (SAF) Industry at Abhaynagar Thana in Jessore District is selected as the study area.
Primary data collection
Sample taken from three points of drain through which the effluent discharging into the Bhairab River.
Different physico-chemical analysis were performed in the Laboratory of Environmental Science Discipline, Khulna University.
SOURCES
Sources of secondary data collection
LGED, Jessore
Journals and papers from NGO’s,
Previously published papers of BCLT.
Report from Dhaka leather complex (DLC)
UNDP seminar papers, DLC manual etc
CONCLUSION
From the result of this study, it appears that tannery effluent contains a large amount of pollutants including heavy metal and deteriorates water quality as well as aquatic environment.
The untreated waste water from SAF industry is directly discharging into the Bhairab River.
Waste from tannery industry gives rise to noxious odors from the decomposition of organic matter and deplete the dissolved oxygen in the water that is vital for aquatic life.
Due to the effluent discharging the water quality of the Bhairab River is degrading. Both the BOD and COD value of the effluent are extremely higher than the DOE standard.
Sulphide, an odorous and toxic element (if the concentration more than 5 ppm) exist in the waste water to a large extent. The concentration of other parameters is also high.
No parameter satisfied the DOE standard suggested for tannery effluent except the pH value.
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