Título :	Influência climática em modelos cinéticohidrodinâmicos para dimensionamento de wetlands construídas no tratamento de esgoto doméstico
Autor :	Silva Júnior, Édio Damásio da
Orientador(es)::	Souza, Marco Antonio Almeida de
Assunto::	Esgotos domésticos Evapotranspiração Precipitação Esgotos - tratamento Wetlands
Fecha de publicación :	6-jun-2019
Data de defesa::	17-dic-2018
Citación :	SILVA JÚNIOR, Édio Damásio da. Influência climática em modelos cinéticohidrodinâmicos para dimensionamento de wetlands construídas no tratamento de esgoto doméstico. 2018. xvi, 201 f., il. Tese (Doutorado em Tecnologia Ambiental e Recursos Hídricos)—Universidade de Brasília, Brasília, 2018.
Abstract:	Mathematical models that consider precipitation (PCT) and evapotranspiration (EVT) in sewage treatment are rare. This research aimed to evaluate the influence of these climatic factors on five models of domestic sewage treatment in constructed wetlands (CWs). A domestic sewage treatment plant was constructed, consisting of a CW hybrid system (a subsurface vertical flow cell - CW-SSVF, followed by a horizontal subsurface CW-SSHF). Gravel support medium (#2) and Crysopogon zizanioides plant species were used in both cells. Hydrodynamic tracer test was performed to evaluate the flow of sewage in CWs. The daily outflows of influent and effluents from each cell were monitored for 22 months. Daily sewage and PCT levels were used to calculate EVT (mass flow rate). The concentration of organic matter, nitrogen and phosphorus of the sewage was quantified at the entrance and exit of each cell. These data (excepting phosphorus) were applied to 1º Order, Grau 2º Order, Monod, Monod Multi and Stover-Kincannon kinetic models, according to CSTR (continuous stirred-tank reactor) and PFR (plug-flow reactor), with no influence of PCT and EVT (considering only the concentration of pollutants) and with influences of these variables (considering the pollutant loads and the mean of the inflows and effluents in the equations). CW-SSVF presented hydrodynamics similar to CSTR (d = 1.58 and N = 1.54) and CWSSHF with high dispersion (d = 0.63 and N = 4.53). The mean EVT rates in CW-SSVF and CW-SSHF were 23.4 and 8.2 mm.d-1, corresponding to the mean percentage water loss of 30.8 and 35.8% of the influent sewage, respectively. In CW-SSVF, Monod Multi model (CSTR) was the most adequate to represent the behavior of NH4 +, NO3 - and COD. For BOD, the most representative was Stover-Kincannon-CSTR model. In the CW-SSHF, Monod Multi model (CSTR flow) represented the best behavior of NH4 + and BOD. Stover- Kincannon was the most suitable kinetics for CW-SSHF describing NO3 - (PFR flow) and COD (CSTR flow). It was concluded that the use of the pollutant load in the mathematical models representative of the sewage treatment presented a better performance (or statistical insignificance), except for BOD in CW-SSVF, than the models that consider only the concentration of the pollutants. Finally, the most suitable parameter for the CWs design was BOD, considering the Stover-Kincannon-CSTR (for CW-SSVF) and Monod Multi-CSTR (for CW-SSHF) models.
metadata.dc.description.unidade:	Faculdade de Tecnologia (FT) Departamento de Engenharia Civil e Ambiental (FT ENC)
Descripción :	Tese (doutorado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Civil e Ambiental, Pós-Graduação em Tecnologia Ambiental e Recursos Hídricos, 2018.
metadata.dc.description.ppg:	Programa de Pós-Graduação em Tecnologia Ambiental e Recursos Hídricos
Licença::	A concessão da licença deste item refere-se ao termo de autorização impresso assinado pelo autor com as seguintes condições:Na qualidade de titular dos direitos de autor da publicação, autorizo a Universidade de Brasília e o IBICT a disponibilizar por meio dos sites www.bce.unb.br, www.ibict.br, http://hercules.vtls.com/cgi-bin/ndltd/chameleon?lng=pt&skin=ndltd sem ressarcimento dos direitos autorais, de acordo com a Lei nº 9610/98, o texto integral da obra disponibilizada, conforme permissões assinaladas, para fins de leitura, impressão e/ou download, a título de divulgação da produção científica brasileira, a partir desta data.
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