Production and transport of urban wet weather pollution in combined sewer systems: the “Marais” experimental urban catchment in Paris

Chebbo, Ghassan; Gromaire, Marie-Christine; Ahyerre, M.; Garnaud, S.

doi:10.1016/s1462-0758(01)00029-2

Cited by 67 publications

(27 citation statements)

References 13 publications

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“…), and both pathogenic and non-pathogenic microorganisms. Metals such as lead, zinc and copper are largely bound to particles (Chebbo et al 2001). Aliphatic hydrocarbons as well as polycyclic aromatic hydrocarbons also tend to be transported via particulate pollution (Kafi-Benyahia et al 2005, 2006.…”

Section: Introductionmentioning

confidence: 99%

Suspended solids concentration in wastewater: Influence of sampling conditions

Larrarte

Pons

2011

Urban Water Journal

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International audiencePollutant quantification offers a wide range of applications in the field of water resources. With respect to sewage, a key issue is sample representativeness, as samples are often collected under technically challenging conditions. A new series of experimental measurements were conducted in actual sewers in order to investigate the influence of the major factors affecting sampling. Such factors include water velocity, sampling velocity, sampling tube location and orientation of the sampling point relative to the flow direction. Results show that the influence of these factors remains within 5% of the mass of the total suspended solids concentrations, meaning that in most practical applications, this influence may be neglected

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Section: Introductionmentioning

confidence: 99%

Suspended solids concentration in wastewater: Influence of sampling conditions

Larrarte

Pons

2011

Urban Water Journal

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“…Several kinds of pollution are generated by roofing materials. First, metallic elements are generated by corrosion of roof materials before being swept away by rainwater: roofing materials could be a major source of zinc, cadmium, lead and copper during wet weather (Chebbo et al, 2001). Especially, zinc emissions are mainly in the labile form (Heijerick et al, 2002), which is bioavailable and harmful to aquatic organisms.…”

Section: Some Needs For Urban Materials Mapsmentioning

confidence: 99%

Spectral Band Selection for Urban Material Classification Using Hyperspectral Libraries

Bris¹,

Laroui²,

Briottet³

et al. 2016

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:In urban areas, information concerning very high resolution land cover and especially material maps are necessary for several city modelling or monitoring applications. That is to say, knowledge concerning the roofing materials or the different kinds of ground areas is required. Airborne remote sensing techniques appear to be convenient for providing such information at a large scale. However, results obtained using most traditional processing methods based on usual red-green-blue-near infrared multispectral images remain limited for such applications. A possible way to improve classification results is to enhance the imagery spectral resolution using superspectral or hyperspectral sensors. In this study, it is intended to design a superspectral sensor dedicated to urban materials classification and this work particularly focused on the selection of the optimal spectral band subsets for such sensor. First, reflectance spectral signatures of urban materials were collected from 7 spectral libraires. Then, spectral optimization was performed using this data set. The band selection workflow included two steps, optimising first the number of spectral bands using an incremental method and then examining several possible optimised band subsets using a stochastic algorithm. The same wrapper relevance criterion relying on a confidence measure of Random Forests classifier was used at both steps. To cope with the limited number of available spectra for several classes, additional synthetic spectra were generated from the collection of reference spectra: intra-class variability was simulated by multiplying reference spectra by a random coefficient. At the end, selected band subsets were evaluated considering the classification quality reached using a rbf svm classifier. It was confirmed that a limited band subset was sufficient to classify common urban materials. The important contribution of bands from the Short Wave Infra-Red (SWIR) spectral domain (1000 -2400 nm) to material classification was also shown.

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“…Alguns autores, como Chebbo et al (2001) na França, Ide (1984), Neves e Tucci (2011) e Pimentel (2009 no Brasil, entre outros, apresentaram estudos para avaliação da qualidade das águas no sistema de drenagem pluvial. Nesses trabalhos, fica evidente a relação entre o sistema de drenagem de águas pluviais e os outros componentes do saneamento básico, com destaque para a presença significativa de resíduos sólidos, que exerce papel importante no mau funcionamento das redes de drenagem, e para o esgotamento sanitário, cuja mistura nos corpos d'água urbanos provoca a degradação das águas e cria um importante argumento para sua canalização.…”

Section: A Drenagem Urbana No Brasilunclassified

Gestão Da Drenagem Urbana No Brasil: Desafios Para a Sustentabilidade

Souza¹

2013

Revista GESTA

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RESUMOOs sistemas de drenagem urbana no Brasil ainda seguem um padrão baseado apenas em eficiência hidráulica de condutos, apesar de já haver um reconhecimento de que este tipo de abordagem não resolve os problemas no longo prazo; é apenas uma ação pontual e que age sobre os efeitos. Desta forma, os sistemas de drenagem continuam sendo concebidos, dimensionados e projetados para falhar. Apesar de haver grande avanço acadêmico no desenvolvimento de técnicas e abordagens mais integradoras, com foco na bacia hidrográfica e nos impactos da urbanização sobre os processos naturais, ainda não houve apropriação desse conhecimento na prática dos técnicos municipais e tomadores de decisão. Este artigo apresenta uma contextualização da drenagem urbana no Brasil, mostrando os avanços obtidos no conhecimento do problema e os desafios para avançar, também, na aplicação de novas técnicas e metodologias. Foram analisados trabalhos acadêmicos desenvolvidos nos principais centros brasileiros de pesquisa em drenagem urbana -com foco em modelagem de sistemas de drenagem e desenvolvimento de técnicas compensatórias em drenagem urbana -, os principais instrumentos da política urbana e o conhecimento prático de análise de alguns sistemas de drenagem em particular. Observa-se que as incertezas nos parâmetros utilizados em projeto e modelagem ainda são grandes e os manuais utilizados estão defasados, com ausência de metodologias e parâmetros simples para utilização das novas técnicas e abordagens de drenagem urbana e manejo de águas pluviais.Palavras-chave: drenagem urbana, manejo de águas pluviais, déficit em drenagem, sustentabilidade na drenagem urbana ABSTRACT Although traditional drainage systems (based on hydraulic efficiency) limitations are well-known, Brazilian approach is still focused on punctual analyses on the effects and not on sources of flood problems. Hence, developments that consider simplifications on both conception and design, such as constant runoff coefficient (based on projected land use) and average time interval as risk analysis, are "designed to fail". Academic research have resulted in new approaches and drainage techniques, focused on catchment's hydrological processes changes. However, such approach has not been incorporated on municipalities' praxis. This paper presents the state-of-art on Brazilian stormwater drainage, including problems, advances and challenges related to introducing sustainable techniques on urban drainage landscape. Academic papers, Master Plans directives, approaches on flood control and main public policy instruments on sanitation were analyzed. It was observed that uncertainties on parameter definition when drainage systems are designed are still great and that drainage manuals are not up-to-date. Those manuals should include new solutions (techniques, methodologies and parameters for design and evaluation) to change current limited approach to drainage systems (based only on hydraulic efficiency).Keywords: urban drainage, stormwater management, urban drainage deficit, sustainabilit...

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Production and transport of urban wet weather pollution in combined sewer systems: the “Marais” experimental urban catchment in Paris

Cited by 67 publications

References 13 publications

Suspended solids concentration in wastewater: Influence of sampling conditions

Suspended solids concentration in wastewater: Influence of sampling conditions

Spectral Band Selection for Urban Material Classification Using Hyperspectral Libraries

Gestão Da Drenagem Urbana No Brasil: Desafios Para a Sustentabilidade

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