Valorización del uso de lodos de lavadoras de jeans para el compostaje de la Empresa EMMAIT-EP del cantón Pelileo provincia de Tungurahua.

Abstract

The objective of this research work is to perform the process of co-composting the sludge of jeans washings and the organic solid waste from the sanitary landfill of the Municipal Associated Cleanliness Pelileo Patate Enterprise (EMMAIT-EP) and evaluate the quality of the compost obtained. In Pelileo, the sanitary landfill of the company EMMAIT-EP is located; the per capita production of sewage sludge was 0.72 Ton/day. The increase of the textile industry in Pelileo has caused negative environmental impacts due to the lack of treatment for this type of waste, which is why the composting technique is considered as a treatment option. For this reason two windrow composting piles were built, taking into account two types of waste mixtures to be composted with different concentration; P1 (50% SLUDGE + 30% Residues from indoor and outdoor Markets + 20% PRUNING), P2 (50% SLUDGE + 30% PRUNING + 20% Residues from indoor and outdoor Markets). The initial characterization of the starting materials of both pile 1 and pile 2 was carried out, obtaining an adequate Corg/NT ratio of the mixtures for the development of the composting technique (20.42) and (20.94) respectively. The temperature and humidity were monitored daily during the bio-oxidative process, which lasted 151 days and 6 turns were carried out for each of the piles. Throughout the process, different biological parameters were evaluated, physical-chemical and chemical with pH, CIC, CE, NT%, Corg / NT, MO%, macro and micro nutrients, index of germination and heavy metals. The mixture with the highest proportion of residual sludge and pruning (Pile 2) was the one that produced a compost with higher agronomic quality, the final values of the mature compost were the following: (pH 8.82); (EC 2.47dS/m); (CIC 68 mEq/100g); (IG> 60%) and non-significant toxicity due to heavy metals that were found below the minimum reference value by the American and European guidelines with respect to all the parameters studied.