Made available in DSpace on 2014-12-17T15:03:26Z (GMT). No. of bitstreams: 1 SelmaTBS_DISSERT.pdf: 3810080 bytes, checksum: 8b739c6a2157b745d52a0808728726c9 (MD5) Previous issue date: 2011-06-27 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The detention and infiltration ponds of urban drainage system has function to protect the population from undesirable effects of floods. In general these ponds are not completly used and it potential is wasted. As it are disseminated at different places at cities it can reduce costs with water transport and permit water preservation of best quality. Some it utilities includes use in green areas irrigation, industrial among than cooling towers and boiler, soil compaction, cleaning urban road, pisciculture and fire fighting system. The quality these water is influenced by anauthorized sewage in the drainage system. This study was performed in six detention and infiltration ponds at drainage system of Natal, which aim was to verify the non-portable use these ponds on urban environment. As indirect aim would to incentive the water utilization these ponds as a water source to another uses in urban environment. These ponds represents the characteristics of detention and infiltration of Natal city and consequently of Brazil. As the water quality, the ponds presents following characteristics: three has apparently good quality, other showed intermediate condition and two had water polluted. Were performed twenty sample in each ponds and the following parameters assessed: pH, temperature, dissolved oxygen, turbidity, electrical conductivity, coliform thermotolerant, ammonia, organic nitrogen, TKN, nitrate, total phosphorus and alkalinity, bicarbonate, chloride, total hardness, calcium and magnesium hardness, total solids, TSS, TDS, COD and SAR?. To utilization on pisciculture we recommend use in ponds which presents the best quality. Only one pond presented higher pollutants and it not being appropriated for use in cooling tower. The content of solids suspension restricted the water use in all ponds in boilers. As water use in soil compaction, cleaning urban road and fire fighting system the water from these ponds are not appropriated. However, the recommended limits from literature are to domestic sewage, due to this, the parameters are restrictive to diminish the sanitary risk that could be offered with it utilization. The infiltration velocity of water these assessed ponds restrict a moderato use, however the effects are potentiated only in soil less sandy, which not occur in Natal. It is recommend the unrestricted irrigation utilization in ponds with best quality of water, and a restricted irrigation to ponds with worst quality of water. As load of pollutants, it is recommended a complementary treatment in those ponds whit higher load to diminish sanitary risks. In only one pond was found one helminth eggs and due to the convention formula of results, it was found for all ponds less than 1 helminth/liter eggs. / As lagoas de deten??o e infiltra??o do sistema de drenagem urbana geralmente possuem a fun??o de proteger a popula??o contra os efeitos indesej?veis de enchentes. Geralmente as ?guas de tais lagoas n?o s?o utilizadas e o seu potencial ? desperdi?ado. Por estarem disseminadas nas cidades pode-se reduzir os custos com transporte de ?gua, al?m de permitir a preserva??o de ?guas de melhor qualidade. Alguns dos poss?veis usos s?o irriga??o de ?reas verdes, uso em caldeiras, torres de resfriamento, e outros usos industriais, na compacta??o do solo, limpeza de vias p?blicas, na piscicultura, em sistemas de combate a inc?ndio, etc. A qualidade destas ?guas sofre influ?ncia de lan?amentos indevidos de esgotos sanit?rios na rede de drenagem. O estudo foi realizado em seis lagoas de deten??o e infiltra??o do sistema de drenagem de Natal, com o objetivo de verificar as condi??es de uso n?o pot?vel de suas ?guas no meio urbano. Indiretamente tamb?m objetiva incentivar a utiliza??o das ?guas destas lagoas como uma fonte de ?gua com potenciais de outros usos no meio urbano. As lagoas s?o representativas das caracter?sticas de lagoas de deten??o e infiltra??o que est?o disseminadas em Natal, assim como no Brasil. As lagoas apresentaram as seguintes similaridades: tr?s delas apresentaram aparentemente boa qualidade de suas ?guas, outra lagoa apresentou uma condi??o de qualidade intermedi?ria, e outras duas lagoas apresentam ?guas polu?das. Foram realizadas vinte coletas em cada lagoa de deten??o e infiltra??o. Os par?metros analisados foram: pH, temperatura, oxig?nio dissolvido, turbidez, condutividade el?trica, coliformes termotolerantes, nitrog?nio amoniacal, nitrog?nio org?nico, NTK, nitrato, f?sforo total, alcalinidade total, bicarbonatos, cloretos, dureza total, dureza de c?lcio, dureza de magn?sio, s?lidos totais, SST, SDT, DQO e RAS?. Para a utiliza??o em piscicultura recomenda-se o uso das ?guas das lagoas que apresentaram as melhores qualidades. Em torres de resfriamento apenas a ?gua de uma das lagoas, a que apresentou a maior carga de poluentes, n?o ? adequada. O teor de s?lidos em suspens?o restringiu o uso das ?guas de todas as lagoas em caldeiras. Para uso das ?guas das lagoas em compacta??o do solo, limpeza de vias p?blicas, e em sistemas de prote??o contra inc?ndio as ?guas das lagoas n?o s?o adequadas. Entretanto, os limites recomendados nas refer?ncias pesquisadas s?o para esgotos dom?sticos, e em fun??o disto, os par?metros s?o restritivos para que se diminuam os riscos sanit?rios que podem ser oferecidos com a utiliza??o. A velocidade de infiltra??o das ?guas das lagoas analisadas imp?s uma condi??o de uso moderado, mas os efeitos s?o potencializados apenas em solos pouco arenosos, que n?o ocorre em Natal. Recomenda-se a utiliza??o em irriga??o irrestrita para as ?guas da lagoa que possui a melhor qualidade, e, exceto para a de pior qualidade, a recomenda??o ? para uso em irriga??o restrita. Para as ?guas da lagoa com maior carga de poluentes recomenda-se tratamento complementar para que riscos sanit?rios sejam eliminados. Em uma ?nica lagoa foi encontrado apenas um ovo de helminto, e em fun??o das f?rmulas para convers?o dos resultados, foi encontrado para todas as lagoas a concentra??o de menos de 1 ovo de helminto/litro.

A drenagem urbana é o componente do saneamento básico menos assistido no Brasil em termos de regulação e até mesmo de regulamentação direta pelo Titular. Embora a Lei nº 11.445/2007 tenha estabelecido, expressamente, o manejo de águas pluviais urbanas como um dos quatro pilares do saneamento básico, a estrutura institucional relacionada à prestação e à regulação deste serviço ainda não está consolidada e a normatização existente é parca e dispersa. Na maioria dos casos, não existe órgão regulador para o serviço de drenagem urbana, e sua prestação dá-se diretamente por secretarias de prefeituras municipais, que, não raro, encontram-se defasadas em termos de estrutura, qualificação técnica e recursos financeiros, faltando ainda integração do manejo de águas pluviais urbanas com a gestão de recursos hídricos e dos serviços de abastecimento de água, esgotamento sanitário e resíduos sólidos. Assim, verifica-se que um dos maiores problemas a serem enfrentados no setor de drenagem urbana é a sua estruturação institucional, sendo necessário constituir entidades autônomas de prestação do serviço que o executem de forma planejada, integrada e com sustentabilidade econômico-financeira, bem como prever agências reguladoras para garantir a adequação do mesmo. O presente trabalho teve por objetivo formular propostas para a melhoria do serviço público de manejo de águas pluviais no Brasil com ênfase na questão institucional, a partir da análise dos contextos contemporâneos brasileiro e norte-americano de gestão deste serviço, observada a legislação aplicável e a busca pela autonomia financeira do prestador. Transversalmente, estudou-se o emprego de práticas sustentáveis de drenagem urbana, consideradas na elaboração das propostas Para o desenvolvimento deste trabalho, realizou-se pesquisa bibliográfica complementada por levantamento em campo das agências reguladoras brasileiras atuantes em drenagem urbana e visita técnica à ADASA – Agência Reguladora de Águas, Energia e Saneamento Básico do Distrito Federal. Após o exame detalhado dos contextos de gestão das águas pluviais no Brasil e nos Estados Unidos, concluiu-se que a macroestrutura regulatória deste país pode ser adaptada ao cenário brasileiro, desde que haja redução da escala espacial de atuação das entidades, que em território brasileiro não seriam agências reguladoras, e sim órgãos ambientais do SISNAMA. No que tange à prestação do serviço, constatou-se que o modelo estadunidense de utility (empresa de serviços públicos) tem se revelado eficaz, tanto para institucionalizar a figura do prestador, quanto para proporcionar sustentabilidade econômico-financeira. Outros aspectos da gestão norte-americana com aplicabilidade no Brasil foram identificados, e fizeram-se ainda proposições baseadas em parcas, porém exitosas, experiências nacionais de prestação e regulação sistemáticas. Dentre as propostas realizadas, destaca-se a orientação de que municípios de pequeno porte priorizem a prestação regionalizada do serviço público de drenagem urbana, alternativa esta que não só lhes permitiria elaborar um único Plano de Saneamento Básico, mas também abriria espaço para que o planejamento e a prestação do serviço ocorressem em escala de bacia hidrográfica, que é a ideal para o manejo de águas pluviais urbanas. / Urban drainage is the least assisted component of sanitation in Brazil in terms of regulation and even direct rulemaking by municipalities. Although Law Nº 11445/2007 expressly established the stormwater management as one of the four pillars of basic sanitation, the institutional structure related to the provision and regulation of this service has not yet been consolidated and existing regulations are few and dispersed. In most cases, there is no regulatory body for the urban drainage service, and it is provided directly by secretariats of municipal prefectures, which are often lagged in terms of structure, technical qualification and financial resources; thereto, it lacks integration of stormwater management with the water resources and water supply, sewage and solid waste services management. Thus, it is verified that one of the major problems to be faced in the urban drainage sector is its institutional structuring, and it is necessary to establish autonomous entities to provide this service in a planned, integrated and economically-financially sustainable way, as well as regulatory agencies to ensure its adequacy. The present work had the objective of formulating proposals for the improvement of the public stormwater management service in Brazil with emphasis on the institutional question, based on the analysis of the contemporary Brazilian and North American contexts of stormwater management, observing the applicable legislation and the the financial autonomy of the service’s provider. The use of sustainable urban drainage practices has been studied transversally and then considered in the preparation of the proposals For the development of this work, a bibliographical research was carried out complemented by field survey of the Brazilian regulatory agencies working in urban drainage and technical visit to ADASA - Regulatory Agency of Water, Energy and Basic Sanitation of the Federal District. After a detailed examination of the stormwater management contexts in Brazil and the United States, it was concluded that the regulatory macrostructure of this country can be adapted to the Brazilian scenario, since there is a reduction in the spatial scale of action of the entities, which in Brazilian territory would not be regulatory agencies, but environmental institutions of SISNAMA. Regarding the provision of the service, it was verified that the US utility model has proved to be effective, both to institutionalize the service provider and to afford economic-financial sustainability. Other aspects of US management with applicability in Brazil have been identified, and proposals have been made based on few but successful national experiences of systematic service rendering and regulation. Among the proposals made, it is important to point out that small municipalities should prioritize the regionalised provision of the urban drainage service, which would not only allow them to prepare a single Basic Sanitation Plan, but would also open space so that planning and service provision occur on a river basin scale, which is ideal for stormwater management.

La gestion des eaux pluviales constitue un défi important à relever dans les villes du monde entier : aujourd’hui on ne compte plus les problèmes d’inondation et de pollution, problèmes chroniques qui tendent à s’amplifier à mesure que l’urbanisation grandit en parallèle du changement climatique. Une gestion durable de ces eaux est au cœur des enjeux du XXIe siècle et afin de faire face à ces problèmes le Ministère de l’Écologie et du Développement Durable a engagé une opération de recherche sur cette thématique. Parmi les problèmes posés par les eaux pluviales, notre étude se focalise sur les rejets urbains de temps de pluie (RUTP). Ces rejets constituent un apport important et imprévisible de nombreux polluants pour les masses d’eaux réceptrices. La pollution des RUTP est étudiée depuis de nombreuses années et, alors que les connaissances en la matière s’affinent, il n’existe à l’heure actuelle aucune étude de grande ampleur permettant d’identifier l’impact des RUTP sur les écosystèmes récepteurs. Notre travail a consisté à étudier l’impact environnemental de différents échantillons de RUTP collectés sur 3 sites d’assainissement pluvial de l’agglomération lyonnaise. Pour cela nous avons sélectionné des bioindicateurs pertinents, les microalgues d’eau douce, organismes unicellulaires à la base des chaînes trophiques et très sensibles aux polluants présents dans les RUTP. Nous avons réalisé des bioessais écotoxicologiques connus de la littérature et contribué au développement de nouveaux indicateurs de toxicité complémentaires. De plus nous avons cherché à adapter ces bioessais pour permettre leur utilisation sur le terrain. En parallèle nous avons travaillé à l’amélioration d’un biocapteur enzymatique à cellules algales. Ses performances ont été évaluées sur des échantillons de RUTP avant d’œuvrer à la construction d’une station automatisée qui nous a permis de réaliser des mesures directement sur les sites d’assainissement (on line monitoring). Ce travail contribue à mettre en évidence l’impact important des RUTP sur le milieu récepteur tout en confirmant le caractère hétérogène de ce type d’effluent et l’intérêt des dispositifs de surveillance in situ. / The stormwater management constitutes an important challenge for cities around the world: today there are countless problems of flooding and pollution, chronic problems that tend to amplify as urbanization grows. Sustainable management of these waters is at the heart of defies of the twenty-first century and to address these problems the Ministry of Ecology and Sustainable Development has launched a research operation. Among problems posed by stormwater, our study focuses on urban wet weather discharges (UWWD). These releases are an important and unpredictable contribution of many pollutants to the receiving water bodies. UWWD's pollution has been studied for many years and, while knowledge in the field matures, there is at present no large-scale study to identify the impact of UWWD on the receiving ecosystems. Our work consist in studying the impact of different UWWD samples collected at 3 storm sanitation sites of Lyon on the environment. We have relevant bioindicators, freshwater microalgae, unicellular organisms at the base of the trophic chain and very sensitive to pollutants present in the UWWD. We have undertaken ecotoxicological bioassays known from the literature and contributed to the development of new indicators of toxicity. Furthermore, we seek to adapt these bioassays to allow their use in the field. In parallel, we have worked to improve an enzyme biosensor algal cell. We evaluated its performances on samples of UWWD and then we built an automated measuring station to make measurements directly on the remediation site (online monitoring).

A drenagem urbana é o componente do saneamento básico menos assistido no Brasil em termos de regulação e até mesmo de regulamentação direta pelo Titular. Embora a Lei nº 11.445/2007 tenha estabelecido, expressamente, o manejo de águas pluviais urbanas como um dos quatro pilares do saneamento básico, a estrutura institucional relacionada à prestação e à regulação deste serviço ainda não está consolidada e a normatização existente é parca e dispersa. Na maioria dos casos, não existe órgão regulador para o serviço de drenagem urbana, e sua prestação dá-se diretamente por secretarias de prefeituras municipais, que, não raro, encontram-se defasadas em termos de estrutura, qualificação técnica e recursos financeiros, faltando ainda integração do manejo de águas pluviais urbanas com a gestão de recursos hídricos e dos serviços de abastecimento de água, esgotamento sanitário e resíduos sólidos. Assim, verifica-se que um dos maiores problemas a serem enfrentados no setor de drenagem urbana é a sua estruturação institucional, sendo necessário constituir entidades autônomas de prestação do serviço que o executem de forma planejada, integrada e com sustentabilidade econômico-financeira, bem como prever agências reguladoras para garantir a adequação do mesmo. O presente trabalho teve por objetivo formular propostas para a melhoria do serviço público de manejo de águas pluviais no Brasil com ênfase na questão institucional, a partir da análise dos contextos contemporâneos brasileiro e norte-americano de gestão deste serviço, observada a legislação aplicável e a busca pela autonomia financeira do prestador. Transversalmente, estudou-se o emprego de práticas sustentáveis de drenagem urbana, consideradas na elaboração das propostas Para o desenvolvimento deste trabalho, realizou-se pesquisa bibliográfica complementada por levantamento em campo das agências reguladoras brasileiras atuantes em drenagem urbana e visita técnica à ADASA – Agência Reguladora de Águas, Energia e Saneamento Básico do Distrito Federal. Após o exame detalhado dos contextos de gestão das águas pluviais no Brasil e nos Estados Unidos, concluiu-se que a macroestrutura regulatória deste país pode ser adaptada ao cenário brasileiro, desde que haja redução da escala espacial de atuação das entidades, que em território brasileiro não seriam agências reguladoras, e sim órgãos ambientais do SISNAMA. No que tange à prestação do serviço, constatou-se que o modelo estadunidense de utility (empresa de serviços públicos) tem se revelado eficaz, tanto para institucionalizar a figura do prestador, quanto para proporcionar sustentabilidade econômico-financeira. Outros aspectos da gestão norte-americana com aplicabilidade no Brasil foram identificados, e fizeram-se ainda proposições baseadas em parcas, porém exitosas, experiências nacionais de prestação e regulação sistemáticas. Dentre as propostas realizadas, destaca-se a orientação de que municípios de pequeno porte priorizem a prestação regionalizada do serviço público de drenagem urbana, alternativa esta que não só lhes permitiria elaborar um único Plano de Saneamento Básico, mas também abriria espaço para que o planejamento e a prestação do serviço ocorressem em escala de bacia hidrográfica, que é a ideal para o manejo de águas pluviais urbanas. / Urban drainage is the least assisted component of sanitation in Brazil in terms of regulation and even direct rulemaking by municipalities. Although Law Nº 11445/2007 expressly established the stormwater management as one of the four pillars of basic sanitation, the institutional structure related to the provision and regulation of this service has not yet been consolidated and existing regulations are few and dispersed. In most cases, there is no regulatory body for the urban drainage service, and it is provided directly by secretariats of municipal prefectures, which are often lagged in terms of structure, technical qualification and financial resources; thereto, it lacks integration of stormwater management with the water resources and water supply, sewage and solid waste services management. Thus, it is verified that one of the major problems to be faced in the urban drainage sector is its institutional structuring, and it is necessary to establish autonomous entities to provide this service in a planned, integrated and economically-financially sustainable way, as well as regulatory agencies to ensure its adequacy. The present work had the objective of formulating proposals for the improvement of the public stormwater management service in Brazil with emphasis on the institutional question, based on the analysis of the contemporary Brazilian and North American contexts of stormwater management, observing the applicable legislation and the the financial autonomy of the service’s provider. The use of sustainable urban drainage practices has been studied transversally and then considered in the preparation of the proposals For the development of this work, a bibliographical research was carried out complemented by field survey of the Brazilian regulatory agencies working in urban drainage and technical visit to ADASA - Regulatory Agency of Water, Energy and Basic Sanitation of the Federal District. After a detailed examination of the stormwater management contexts in Brazil and the United States, it was concluded that the regulatory macrostructure of this country can be adapted to the Brazilian scenario, since there is a reduction in the spatial scale of action of the entities, which in Brazilian territory would not be regulatory agencies, but environmental institutions of SISNAMA. Regarding the provision of the service, it was verified that the US utility model has proved to be effective, both to institutionalize the service provider and to afford economic-financial sustainability. Other aspects of US management with applicability in Brazil have been identified, and proposals have been made based on few but successful national experiences of systematic service rendering and regulation. Among the proposals made, it is important to point out that small municipalities should prioritize the regionalised provision of the urban drainage service, which would not only allow them to prepare a single Basic Sanitation Plan, but would also open space so that planning and service provision occur on a river basin scale, which is ideal for stormwater management.

Urbanization involves the conversion of natural areas to impervious surfaces, which can lead to an increase in the frequency and severity of flood events in cities. To mitigate flood risk, stormwater ponds are constructed to manage urban runoff. Stormwater ponds can also be colonized by wildlife, but their suitability as habitat is disputed due to potential toxicological risks. This study assessed the suitability of stormwater ponds as habitat for the bioindicators Odonata (dragonflies and damselflies) and determined environmental factors that impact their community structure. Odonata (adults, nymphs and exuviae) were sampled at 41 stormwater ponds and 10 natural reference ponds across the National Capital Region of Canada, with a subset of ponds sampled over four years (2015-2018). Plant communities, water quality and surrounding land cover were analyzed at each pond to determine their impacts on Odonata community structure. Overall, stormwater ponds had lower Odonata abundance and a greater variation in species richness and community structure compared to natural ponds but had comparable dragonfly reproduction rates. Plants were the most significant driver of Odonata communities, as stormwater ponds with a high richness of native wetland plants had higher Odonata abundance and community structures similar to natural ponds. Water quality was the second most important driver of Odonata communities with dragonflies showing greater sensitivity to urban contaminants than damselflies. While stormwater ponds had higher concentrations of trace elements than natural ponds (e.g. Ni, V, As), concentrations were generally below toxic levels for all elements except copper and chloride, the latter likely an input from winter road salting. Surrounding land cover was the least important factor affecting Odonata communities. In conclusion, this research demonstrated the importance of local-scale factors related to plants and water quality in sustaining Odonata communities and specifies recommendations for stormwater pond design and maintenance that enhance urban biodiversity.

No description available.

This Diploma thesis deals with design of sanitary instalation and gas instalation in high school. It is high school with four floor and a basement. The teoretical part is focused on water supply from own source. The Computational part and project includes a porposal of sanitary and storm sewer, water supply system, pipeline and their connection to current pipes.

En el distrito de Villa El Salvador se vienen ejecutando obras de pavimentación de las vías, la ejecutada en la Av. Mateo Pumacahua tramo comprendido entre la Av. Separadora Industrial y la Av. Pachacutec”, trae como consecuencia la disminución de la infiltración y las precipitaciones que se registraron en los últimos años en el distrito han ocasionado aniegos provocando accidentes peatonales y de vehículos. Para dar solución ingenieril a este problema se propone implementar el SISTEMA URBANO DE DRENAJE SOSTENIBLE (SUDS) y que consiste en técnicas de gestión de aguas producidas por las precipitaciones, permitiendo devolver el ciclo del agua a las poblaciones urbanizadas, mejorando la calidad del agua a infiltrar y evitando las inundaciones. Mediante cunetas verdes se recolectará los excedentes de aguas pluviales que proviene de las pendientes altas, el agua recolectada se distribuirá mejorando las áreas verdes de la zona de estudio. El hidrograma Unitario Sintético del SCS fue modelado con el HEC-HMS, cuyos resultados fueron, el caudal de diseño de 0.3 m3/s y el volumen excedente de 6400 m3, por otro lado, el balance hídrico nos mostró un déficit que no permitirá cubrir el 1.5% del mantenimiento de las áreas verdes. Del análisis de las alternativas se escogió las cunetas verdes por ser las económicas y con los mismo beneficios técnicos y ambientales. Las precipitaciones registradas el 08/08/2018 fue de 0.2 mm/h y ocasionaron aniegos en la zona de estudio. Las cunetas verdes fueron diseñadas para eventos extraordinarios, el cual permitirá solucionar los problemas de inundaciones. / In the district of Villa El Salvador, paving works have been carried out on the roads, the one executed on Av. Mateo Pumacahua section between Av. Separadora Industrial and Av. Pachacutec", brings as a consequence the decrease in infiltration and rainfall that was recorded in recent years in the district have caused aniegos causing pedestrian and vehicle accidents. To provide an engineering solution to this problem, it is proposed to implement the SUSTAINABLE URBAN DRAINAGE SYSTEM (SUDS) and that consists of water management techniques produced by rainfall, allowing to return the water cycle to urbanized populations, improving the quality of the water to be infiltrated and avoiding floods. Through ditches the surplus rainwater that comes from the high slopes will be collected, the collected water will be distributed improving the green areas of the study area. The Synthetic Unit hydrograph of the SCS was modeled with the HEC-HMS, the results of which were, the design flow of 0.3 m3 / s and the excess volume of 6400 m3, on the other hand, the water balance showed us a deficit that did not cover 1.5 % of the maintenance of green areas. From the analysis of the alternatives, green ditches were chosen because they are economical and have the same technical and environmental benefits. The rainfall recorded on 08/08/2018 was 0.2 mm / h and caused waterlogging in the study area. The green gutters were designed for extraordinary events, which will allow solving flood problems. / Tesis

This diploma thesis is devoted to a rainwater management in commercial and administrative buildings. The goal of this work is to describe rainwater management system with a focus on its later usage. The work is divided into theoretical and practical parts. The first part examines the binding conditions, as well as the individual technologies and devices that must be included in the implementation of a rainwater management system. The practical part of the work is an analysis of the possibility of using rainwater for the needs of the fire brigade in Havlíčkův Brod. The result of this work is a calculation of the approximate payback period of the proposed system.

In this Dissertation, systematic work has been carried out to study the road-deposited sediment and its adsorbed pollutants from a stormwater pollution perspective. Solid-phase concentration, surface load, source apportionment, risk assessment, and desorption dynamics of polycyclic aromatic hydrocarbons and/or heavy metals in road-deposited sediments (RDS) were investigated. In order to provide data to assist potential strategies of stormwater pollution mitigation and integrated catchment management to minimise the adverse impacts of RDS adsorbed pollutants on stormwawter quality, the following specific topics were addressed. ⑴ The influences of traffic load and antecedent dry-weather period on pollution level and ecological risk of heavy metals in RDS were analyzed. ⑵ The build-up dynamics and chemical fractionation of metals were determined. ⑶ The potential source contributions and risk assessment of polycyclic aromatic hydrocarbons in size-fractionated RDS were firstly determined by a Principal component analysis - Multiple linear regression receptor model. ⑷ The qualitative and quantitative source apportionments of polycyclic aromatic hydrocarbons were subsequently investigated through a combined qualitative Molecular Diagnostic Ratio and quantitative Positive Matrix Factorization source apportionment with an extended data set. ⑸ The exposure risk of polycyclic aromatic hydrocarbons were evaluated and calculated by incremental lifetime cancer risk models. ⑹ Then, a novel ecological risk assessment approach to the RDS adsorbed toxic substances was developed, which was explored exclusively for the study of RDS for a water pollution aspect. ⑺ Finally, the effects of rainwater, major wastewater constituents of dissolved organic matter and surfactant on the leaching of heavy metals from RDS were carried out.