Abstract
Present and prospective leather industry waste disposal In this paper general characteristics of the main leather industry waste regarding its amount reduction by thermal treatment have been presented. Both the tannery solid wastes and the sludge contain organic substances. Their energy value is more than 50% higher in comparison to hard coal (nominally 20 MJ/kg as dry material). Up to now, the considerable amounts of energy are not recovered; leather wastes are predominantly on landfill. Implementation of a comprehensive thermal method for tannery solid waste and sludge utilization can permit to solve the waste disposal problem by effective neutralization of all of the waste. Moreover, it should bring economic benefits associated with steam or hot water production and landfill tax avoiding. The study is oriented towards the practical application.
Highlights
Leather industry has been categorized as one of the highly polluting industries because of the generation of huge amount of waste, both the solid waste from leather production processes and the sludge from tannery wastewater treatment as well as gas and odor pollutions emitted into the atmosphere
Favorable investigation results obtained of the all tannery waste thermal treatment permit to reduce the adverse effects of the tanneries activities on the environment and human health by waste landfill avoiding and cheap and effective gas pollution neutralization
By a reduction of gas pollution and odors effect on the atmosphere the quality of life for people living near the tannery will improve
Summary
In this paper general characteristics of the main leather industry waste regarding its amount reduction by thermal treatment have been presented. Both the tannery solid wastes and the sludge contain organic substances. Implementation of a comprehensive thermal method for tannery solid waste and sludge utilization can permit to solve the waste disposal problem by effective neutralization of all of the waste. It should bring economic benefits associated with steam or hot water production and landfill tax avoiding.
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