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The conventional treatment methods of tannery spent float is found to be not sufficient to meet the required international standers levels of liquid discharges on the other hand the establishment of the treatment unit for the physical, biological and chemical treatment of the spent float is found to be extremely high-cost process. During the life time of the tannery by using the recycling of the spent float method, there would be a great saving in the water and the chemicals as well as environment protection. The comparison of the capital cost estimates of two tanneries with the same capacity, one with the conventional treatment method (large treatment unit should be established) and the other used the recycling of the spent float process, show the advantages of using the recycling process over the conventional treatment process.

Comparison of a Tannery that Using the Conventional Treatment of Waste Water and That Using the Recycling Method