Diseño de un sistema de compostaje previa desulfuración a partir de los residuos del pelambre de la Curtiduría Serrano.

Abstract

The objetive of the project was desing a composting system before the desulphurization, from the liming waste of the Curtiduría Serrano, located in Ambato city, of Tungurahua province; due to the liming waste process has a high content of sulfides. It is necesary that mentioned waste is properly treated so the final disposal does not cause an environmental problem. The methods that contribute to the treatment liming waste were: desulphurization and composting. It used the waste of the Curtiduría Serrano by taking them to the collection center of ESPOCH, were it was carried out the desulphurization process through catalytic oxidation using maganesium sulphate and compressed air. In the composting process had a duration time 141 days, it made 7 manual turns to degrade hair waste and garnetted stock, maintaining the optimun humidity of the pile and a maximun temperature of 68°C in the thermophile phase. The time of maturation of the compost was 64 days at a temperature of 18°C, thus generating a final compost with the following characteristics: organic matter 42.69% potassium 0.38 %, phosphorus 0.32%, and nitrogen 3.61% according to the certified laboratory of Agrocalidad. The initial germination index was 11% and at the end of the process it was 44%, which indicates a decrease in phytotoxicity. In this way it is verified that the compost obtained accomplishes with the Spanish Royal Decre 506/2013 technical standard as an organic amendment on fertilizer products. According to the financial analysis carried out, the composting system desing before the desulphurization for the Curtiduría Serrano presents a simple, economic and ecological methodology.