Dear Aquablu Lanka, ...
Published by Bruno Peeters, managing director at Model Engineering
Dear Aquablu Lanka,
Considering that potassium K+ is the counterion of the nitrate NO3- to be removed, I would recommend to consider to recover KNO3 which is a valuable fertilizer and raw material in various production processes.
In this way, your wastewater produces revenue instead of consuming a lot of money to reduce nitrate to nitrogen gas and to remove the corresponding potassium as in the conventional wastewater treatment approach.
1 Comment
Hello Bruno
Thanks for the suggestion, we are in search for a technology for a cost effective Evaporation , to concentrate this water, since the water volume is quite high. 800-1000m3/d.
As you suggested we plan to check the potential of making a concentrated liquid fertilizer.
Published by Aquablu Lanka, Managing Director at Aquablu lanka Pvt ltd
1 Comment
Hello Aquablu Lanka,
Thanks. Evaporating such a high volume of water requires a huge amount of energy and is not really sustainable even when using solar energy. Instead I would recommend to first concentrate the KNO3 using NF/RO membranes as to recover clean water for reuse and then evaporate the RO concentrate with the KNO3.
Regards, Bruno
Published by Bruno Peeters, managing director at Model Engineering