The tannery effluents are characterized by high COD and BOD and conductivity values. The composition of the effluent varies according to the tanning process used and the type of leather to be obtained. The amount of waste water varies between 30 and 50 L per kilogram of the processed skin. Permionics can offer a combination of membrane processes that can handle these effluents and help to recover good quality of water from the recycle.
Na2SO4 & NaCl Separation
In cases where the effluent stream is composed of sodium sulphate and sodium chloride as a mixture our membrane process can help to separate both. Separating both salts will add value as both can be sold in substantially pure form rather than selling them as a mixture.
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