Author/Authors :
Kothiyal، M. نويسنده Department of Civil Engineering, Lingaya’s University, Faridabad, Haryana, India , , Kaur ، M. نويسنده Sri Guru Ram Das Institute of Medical Sciences & Research,Amritsar.Punjab.India. , , Dhiman، A. نويسنده Department of Civil Engineering, Lingaya’s University, Faridabad, Haryana, India ,
Abstract :
The effluents that are generated through Tanning process have high load of COD, BOD, Sulphides
and Odour. Oxidation through aeration has been used for removing sulphide and COD in the tannery effluent.
In the present study a comparison of normal aeration and oxygen injection in the presence and absence of
catalyst MnSO4 were carried out. The three test setup were performed side by side and endured for a fixed
duration till there was no further reduction observed in COD and Sulphide. Results showed that the maximum
COD and Sulphide removal efficiencies were in case of oxygen injection at 0.5 LPM and addition of MnSO4
catalyst (5% of sulphide concentration) at pH 8.5. The removal of sulphide and COD through pure oxygen
injection was found to be two times more effective than normal aeration. The removal efficiency of COD and
Sulphide after 7 hours of oxygen injection at 0.5 LPM with addition of catalyst MnSO4 was 82.68% and
76.83% respectively.
