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BOD-DO modeling and water quality analysis of a waste water outfall off Kochi, west coast of India [An article from: Environment International]
Book Details
PublisherElsevier
ISBN / ASINB000RR6CYY
ISBN-13978B000RR6CY4
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Environment International, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Water 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 m^3 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 m^3 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 km^2 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.
Description:
Water 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 m^3 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 m^3 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 km^2 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.
