Clean Technologies For Slaughterhouse
Waste Treatment: The Case Of
Puebla’s Municipal Slaughterhouse,
Puebla, Mexico
Author(s)
J. Abraham
Abstract
This research addresses the environmental problems caused by waste from the
city slaughterhouse at Puebla, Puebla (Mexico), with an integral,
multidimensional and systemic approach. On average, Puebla’s Municipal
Slaughterhouse sacrifices 400 pigs, 175 heads of cattle, and 35 sheep and goats
per day. From this sacrifice, approximately 5,000 liters of blood, 3.3 m3 of
ruminal contents, 17,000 liters of effluents from entrails cleansing, and 0.3 m3 of
hoofs and bristles are produced. Liquid waste are unloaded, without any
treatment, directly at El Conde ravine. Solid waste are thrown to an exterior back
zone of the slaughterhouse. This waste is exposed outdoors and there are human
settlements nearby. Through the application of different treatment systems based
upon clean and natural technologies such as sun drying, stabilization lagoon, and
composting-worms, an integral processing of pollutant materials (waste) system
is proposed to obtain organic fertilizers (byproducts). By means of the processes
described in this research, 625 kg of bloodmeal, 550 kg of worm compost, 16 kg
of hoofmeal, and 12,000 liters of liquid fertilizer are produced. These byproducts
can be used with excellent results as organic fertilizers and to improve soil
structure by increasing soil activity. Also, a financial study of feasibility was
carried out to determine viability of the system, and survey results are indicated.
However, the solution is not only technological or financial. A conceptual shift
and perception change in Society-Nature relations are necessary as well as the
participation of other sectors of the society.
Keywords: conceptual change, pollutant materials, slaughterhouse waste
products, byproducts.
Keywords
conceptual change, pollutant materials, slaughterhouse waste
products, byproducts.
Related Book
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