Proposta de um modelo de gestão integrada de águas urbanas em escala de lote residencial: alcances e limitações / Proposal for a model of integrated management of urban water scale of residential lot: scope and limitations

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

24/02/2012

RESUMO

This research aimed as its main goal the development of contributions to a proposal for a public policy to the creation of a new urban waters management model, through the development and establishment, at urban lot scale, of an integrated selective drainage system and rainwater use, and reuse of treated domestic sewage, named \"Smart Drainage and Reuse System\" (SD&RS). The research was accomplished at an experimental peri-urban site, named Peri-Urban Experimental Lot, provided by a cover of zinc roof tiles, and its resulting data compared to data generated on a previous study accomplished at another two experimental sites, namely: Undergraduate Learning Support Laboratory-1 and 2 (LAEGs-1 and 2), respectively provided of: compressed tiles made of recycled long-life milk packaging (LAEG-1); and extensive green roof (LAEG-2). For handling of urban waters in residential lot scale, two main types of contribution were considered: 1) Waters from sanitary sewers, treated in a Septic Cesspool Biodigester (SCB) EMBRAPA Model, and 2) Rainwater, collected and treated in a Rainwater Use System (RUS), whose basic conception was the same for the three experimental sites. For the zinc roof, 6 (six) successive sampling series were performed, for 6 (six) rainfall events, in 7 (seven) sampling points of the Rainwater Use System (RUS), and 38 (thirty-eight) physicochemical and biological water quality variables were analysed. The results analysis, compared to the other roofs, suggested, according to the related regulations, a predominant use to non-potable purposes, and since previous rainwater disinfection. For the SCB, 15 (fifteen) alternated sampling series were performed, whose results indicated a still limitated reuse possibility for sanitary sewage. Despite of the results of the present study indicated that the new urban waters management model requires suitability, they offer a possibility of solution to old and actual challenges in urban waters management, since they provided elements for the design of a new public policy named here \"Urban Waters Management Federal Policy\", which presents interfaces with previous policies, like the Water Law.

ASSUNTO(S)

Águas urbanas bacia hidrográfica urbana escala de lote domiciliar manejo de águas pluviais rainwater management reuso de água saneamento sustentável sustainable sanitation urban lot scale urban waters urban watershed water reuse

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