Contribution to the Characterization of Liquid Waste of Poultry Slaughter

Abstract

Protecting the environment occupies a prominent place in the strategy of many companies of food industry. This concern has led the company to implement a proactive policy aimed at curbing the impact of its industrial activity on the natural environment. The characterization of liquid discharges from slaughterhouses is an essential step to study their environmental impacts.In this regards, abattoir effluents were collected in the laboratory for physico-chemical and microbiological analyze in order to study its impact on the environment.According to the results, we noticed that the pH increases from the first sample to the third to reach a value of 8.02, against the values ??of COD, BOD5 decrease from the first sample to the third, also the total nitrogen decreases with a slight variation from the first to the third sampling (from 42.03 to 42 mg /l). This decrease is due to the reduction of microbial load in the effluent resulting from the use of cleaning products. The valuation of this type of waste requires the choice of a suitable ferment, a good knowledge of the physico-chemical and microbiological process.

Keywords: liquid waste of slaughterhouses, characterization, valuation.