The Domiciles

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The adjusted destination of residues is a basic factor for the success of a treatment system. The importance of this practical was recognized for Agenda 21 _ main instrument approved in the World-wide Conference of Environment – River 92 _ that &#039 included in its chapter 21 the subject; ' Ambiently healthful handling of the solid residues and questions related with esgotos' ' (ANDREOLI et al., 1998). While the industrialized nations search alternatives to equate its 400 million annual tons of residues, the communities of developing countries as Brazil, coexist disordered deposits of residues in 75% of its cities approximately, play the garbage in drains the open sky and only 25% receive treatment more adequate: 12% in I fill with earth controlled, 9% in I fill with earth bathroom and the remain in compostagem, incineration and recycling (IBGE, 1998). The forecasts of population increase associated the increasing world-wide urban concentration, determined the immediate necessity of technological definitions and action politics to solve a tragic problem: it has a limitation economic technique and of the appropriate spaces for the final destination of residues. 2 COLLECTION and TRATAMENTOOs precarious levels of collection and treatment of sewer in Brazil allow a estimate of the biosslidos potential of production of. With regard to the covering of the net of sewers, an extremely precarious picture IBGE is had according to (1998): but 33.75% of the total of the population are served.

The variations between regions give a dimension of the existing inaqualities, as the data to follow: but 1.72% of the domiciles are on to the general net, north-eastern this number represents 14.58%. In the Southeastern region, that better is served, total of domiciles represents 63%; in the south Region, only 14.92% and in Center-West 30.07%. These pointers show the level of existing precariousness, where 24% of the Brazilian domiciles have fossa rudimentary, 16% have fossa septic and more than 20% do not possess any type of escoadouro of the sanitary installation (ANDREOLI et al., 1998).

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