A platform for research: civil engineering, architecture and urbanism
BOD–DO modeling and water quality analysis of a waste water outfall off Kochi, west coast of India
AbstractWater quality scenarios around an offshore outfall off Kochi were simulated using MIKE21 water quality model, assuming a high Biochemical Oxygen Demand (BOD=50 mgl−1) effluent discharge. The discharge is introduced into the model through an outfall located at a distance of 6.8 km from the shore at a depth of 10 m. Three scenarios were simulated with different discharge rates such as 2, 5 and 10 m3 s−1, with BOD load of 8640, 21,600 and 43,200 kg day−1 respectively. Model simulations were carried out to estimate the assimilation capacity of the waters off Kochi for the three discharge rates. The results show that for 10 m3 s−1 effluent discharge, the initial BOD of 50 mg l−1 reduced to 3.33 mg l−1 at the outfall after 48 h. High BOD values were confined to an elliptical area of ∼8 km2 around the outfall. Based on this, the assimilative capacity of the waters off Kochi in terms of BOD can be estimated as 38,000 kg day−1. It is suggested that offshore waters could be used as a feasible alternative to the Kochi backwaters for the disposal of treated effluent.
BOD–DO modeling and water quality analysis of a waste water outfall off Kochi, west coast of India
AbstractWater quality scenarios around an offshore outfall off Kochi were simulated using MIKE21 water quality model, assuming a high Biochemical Oxygen Demand (BOD=50 mgl−1) effluent discharge. The discharge is introduced into the model through an outfall located at a distance of 6.8 km from the shore at a depth of 10 m. Three scenarios were simulated with different discharge rates such as 2, 5 and 10 m3 s−1, with BOD load of 8640, 21,600 and 43,200 kg day−1 respectively. Model simulations were carried out to estimate the assimilation capacity of the waters off Kochi for the three discharge rates. The results show that for 10 m3 s−1 effluent discharge, the initial BOD of 50 mg l−1 reduced to 3.33 mg l−1 at the outfall after 48 h. High BOD values were confined to an elliptical area of ∼8 km2 around the outfall. Based on this, the assimilative capacity of the waters off Kochi in terms of BOD can be estimated as 38,000 kg day−1. It is suggested that offshore waters could be used as a feasible alternative to the Kochi backwaters for the disposal of treated effluent.
BOD–DO modeling and water quality analysis of a waste water outfall off Kochi, west coast of India
Babu, M.T. (author) / Kesava Das, V. (author) / Vethamony, P. (author)
Environmental International ; 32 ; 165-173
2005-01-01
9 pages
Article (Journal)
Electronic Resource
English
BOD , Water quality , Kochi
Butyltins in the sediments of Kochi and Mumbai harbours, west coast of India
Online Contents | 2006
|Probabilistic modeling of produced water outfall
British Library Conference Proceedings | 2005
|Shoreline changes at selected stretches on the Thiruvananthapuram-Kochi coast, southwest India
Taylor & Francis Verlag | 2018
|