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Foreword
The Minimal National Standards (MINAS) specific for various
categories of industries are being evolyed after looking into the
techno-economic feasibility of the treatment systems. The MINAS
are independent of the characteristics of the recipient syst~m.
The Central and State Pollution Control Boards have come to an agreement
that under no circumstances MINAS would be relaxed, but can be made
stringent depending upon the requirement of the recipient system.
In the present document MINAS is developed for tanneries. The document
is based upon the 'Comprehensive Document on Pollution Control in
Tanneries' prepared by Central Leather Research Institute, Madras
for the
Central Pollution
Control Board. Chromium recovery and recycle, soakwater se~ga- tion,
clean technologies for minimum pollutant generation, concept of
common effluent treatment schemes for cluster of tanneries, alternatives
for toxic pento-chlorophenol are discussed in the report besides
the treatment technologies to achieve the standards.
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