Thanks for the post. This process looks attractive. I want to know about the Chemical treatment reaction and by-products.
Published by LALA BEHARI SUKLA, Research Professor , Siksha 'O' Anusandhan University, Bhubaneswar
1 Comment
Hi Lala,
A reducing agent such as ferrous sulphate or calcium polysulphide will be able to convert the Cr6+ ion into Cr3+. This reaction takes time so a buffer tank of more than 30 minutes is required. After this, the water needs to be aerated to oxidise the ferrous to ferric which co-precipitates and flocculates the Cr 3+ ion to form a solid particle that can be easily removed either through a clarifier or filtration method.
The solid particle will need to be dried and disposed of.
My company has experience with this sort of treatment process. If you are interested in working together, please email me at andrew@waterandoilsolutions.com.au
Published by Andrew Tran, Engineer