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هنر::
تصفیهی فاضلاب
As they do not have access to complex effluent treatment solutions, easy biodegradability of these dyes reduces the risk of pol- luting the local water resources and offers a clean production model.
In fact they are used for effluent treatment of synthetic dyes.
However, if the hidden cost of the use of synthetic dyes in terms of pollution caused and its detrimental effects on the environment or the investments made and expenditure incurred on effluent treatment is also considered, the gap substantially narrows down.
Production of synthetic dyes involves the use of many toxic and hazardous chemicals and harsh conditions, and adequate protection measures for the workers and proper effluent treatment and disposal systems are needed.
This advantage can be utilized by the traditional artisans in preserving their surroundings from the ill effects of pollution caused by syn- thetic dyes as they do not have access to expensive effluent treatment plants needed for synthetic dyes.
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