The Production of Organic Fertilizer Using Tannery Sludge

Abstract

The tanning industry is know as a potentially pollution intensive industry. The purpose of this study was the conversion of waste sludge from domestic tannery factories into useful organic fertilizer. The research team at the Tongtian Star Group in Zhejiang Province in China used an aerobic high temperature fermentation process to accomplish this aim, with warehouse-style equipment based on practicality, efficiency, and energy conservation principles. The results indicated that the organic fertilizer produced using bio-fermentation technology with integrated tannery sludge as a carrier is suitable for use in agriculture and forestry. The components of the organic fertilizer comply with the national standard. The project indicated that it is feasible to produce an organic fertilizer with tannery sludge.