Biogas Use to Dry Sludge of Water Treatment and Electricity Energy Generation in a Brewery Industry

Resumo

This article presents an alternative for the rational use of the biogas produced in an anaerobic reactor

of ascending flow, of one it elaborates brewer. This study makes a theoretical analysis of the use of the energy

potential of the biogas for through generating motor to transform part of that energy in mechanical energy,

destining the remaining for drying of the mud generated in the reactor. One of the parameters that orientate

the work is the amount of necessary energy for the drying of every mud generated by the treatment of the

station brewer. The energy balance of the system allows evaluating the number of necessary generating motors

to produce enough discharge gases to dry the mud, before to destine for agricultural use. In the study of the

necessary energy to dry the mud, it was considered the energy spent in the heating of the mass, added of the

energy destined to the evaporation of the water contained in the mud. The results show that with a small motor

group generating is possible to dry the whole mud produced by the treatment of sewers, and still generate

electric power. The process can be incorporate easily to the treatment system of the company and still reduce

the costs final mud destination.

Keywords: biogas, wastewater sludge, thermal drying, agriculture.