phat-trien-do-thi-o-Vietnam

FLOODING IN URBAN DEVELOPMENT – NEW PROJECT ON DEVELOPING AND ASSESSING TRAFFIC MANAGEMENT MEASURES

Regarding the subject of urban development in Viet Nam, there has been one tremendously practical factor that was not mentioned very often – urban flooding. The project from Dr. Vu Anh Tuan from Vietnamese-German University – which was just liquidated recently, takes a closer look at the effects of this matter on traffic, and propose a solution to minimize this impact on urban development.

1. Elevate the urban development research in Viet Nam

Sustainable urban development and transportation are one of VGU’s key research directions in recent years, with several projects focus on finding new methods to improve life in the cities. The project B2018-VGU-08 was finished in December 2019 and liquidated in March 2020, one of four projects funded by the Ministry of Education and Training in the period of 2018-2019.

General information:

Project Title: Developing and assessing traffic management measures under flooding conditions caused by heavy rains and high tide surge in Ho Chi Minh City
Project code: B2018-VGU-08
Principal investigator: Dr. Vu Anh Tuan
Research institution: Vietnamese-German University
Project direction: Sustainable urban development and transportation
Duration: 18 months (June 2018 – December 2019)

2. Managing flooding in urban development

The ultimate objective of the research is to formulate a set of weather-responsive traffic management measures to minimize the traffic impacts of heavy rains and urban floods. The study has three specific objectives for urban development as follows:

1) Collecting data (including surveys) and analyzing the levels of road flooding in HCMC due to heavy rains and high tidal rises.

2) Conducting travel behavior surveys and analyzing the patterns of travel behavior changes due to adverse weather conditions (before, during, and after the adverse weather), and its impacts on traffic and mobility.

3) Formulating traffic management strategies to mitigate the negative traffic impacts of heavy rains and urban floods.

3. Creativity and innovation

This research has contributed to the literature on the patterns of travel behavior changes under adverse weather conditions and urban flooding; the impacts of adverse weather and urban flooding on traffic and mobility in urban development sustainability, transport network capacity; the weather-responsive traffic management measures to minimize traffic impacts of heavy rains and urban floods.

This research has applied various techniques of analysis, for instances descriptive analysis, independence tests, binary logit models, and VISUM-based traffic simulation model, to (1) capture possible changes of people’s travel behavior under the adverse weather conditions; (2) quantify the impacts of adverse weather conditions, urban flooding and weather-responsive traffic management measures on traffic and mobility.

The value of research contribution is expressed by a methodology developed for assessing possible impacts of adverse weather and urban flooding and weather-responsive traffic management measures. The method could be used for designing traffic management solutions and further improved in future urban development researches.

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Dr. Vu Anh Tuan presents the project and its effect on urban development

4. Research results – Creating an impact on urban development

The research has been completed concerning the goal of formulating a set of weather-responsive traffic management measures to minimize traffic impacts of heavy rains and floods in urban development. Specifically, three objectives have been achieved, including:

1) Collecting data of traffic volumes and flow speeds on 15 roads that floods have often occurred (i.e., surveys on regular and rainy days) and analyzing the levels of road flooding in HCMC due to heavy rains and/or high tidal rises and its impacts on traffic.

2) Conducting travel behavior surveys with 500 respondents and analyzing the patterns of travel behavior changes due to adverse weather conditions (before, during, and after the adverse weather), and its impacts on traffic and mobility in urban development.

3) Formulating traffic management strategies to mitigate the negative traffic impacts of heavy rains and urban floods.

A transport model has been built on VISUM and used for traffic impact assessment of proposed measures. The results of this research shall be a scientific base for practical design of traffic management measures to efficiently respond to heavy rains and urban floods in the urban development of HCMC, with a focus on potentially effective measures and specific road user groups (e.g., students, workers, and public transport users).

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The project aims to improve on the urban development sustainability of Vietnam traffic system

5. Transfer method, beneficiary, and impacts of the research results:

The research results will be transferred to the Ministry of Education and Training for the purpose of education and research reference.

The research results will also be transferred to HCMC’s Department of Transport, Management Center of Saigon Tunnel (MCST), Center for Urban Road Infrastructure Management, Traffic Police, and District People’s Committees to refer to and may conduct further studies in urban development to bring the proposals into practice.
If you are interested in the project, please feel free to contact the PI – Dr. Vu Anh Tuan at drtuan.va@vgtrc.vgu.edu.vn for further details.

Sustainable Urban Development (SUD) is a full-time two-year (4-Semester) joint-degree Master Program offered by Vietnamese-German University (VGU) and Technical University of Darmstadt. Basics of urban planning and understanding of general urban structures are necessary to get an idea of sustainable urban development. Graduates from this course will be able to analyze and assess growing problems in urban areas critically and to develop appropriate solutions from different aspects (architectural, social, economic, ecological and institutional, etc.)

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NEW PROJECT ON WATER TREATMENT FROM VGU STUDENTS

Environment science and water treatment have always been one of VGU’s essential directions in research. Therefore, we encourage not only the research staff and lecturers but also our students to participate in. One of our latest projects on the subject matter comes from one from Mechanical Engineering program, but with the passion for the environment and a new approach to water treatment solution, he had successfully created the textile wastewater treatment block with the electrochemical method.

1. Textile water treatment – the old-new story

Water treatment is used to call any process that improves the quality of water, could be for drinking, industrial usages, river flow conservation, or irrigation. Water treatment removes contaminants and undesirable components or reduces their concentration so that the water becomes fit for its desired end-use. Each purpose requires a different level of purification and specific water treatment methods.

Textile wastewater is highly polluted, characterized by high colorization as well as high Chemical and Biological Oxygen Demands (COD and BOD, respectively). For long, this is one of the industries that pose a dire threat to the environment if the water treatment is not operating per standard. The blooming of the fast fashion market surely did not help since clothes and garments are used at a more rapid pace nowadays. Currently, the primary and typical water treatment process is via biological agents. While it is a tried-and-true water treatment methods, the system is bulky, requiring a large amount of upfront capital to set up.

2. Electrochemical – a new method for water treatment in the textile industry

In March 2019, Mechanical Engineer student Tran Le Hoang, supervised by Dr. Tran Le Luu (Master Program in Water Technology, Reuse & Management), successfully defended the project on building a textile water treatment systems block with the electrochemical method. Recently, the research paper on this project has been accepted by the international scientific journal “Desalination and Water treatment” (ISI indexed, Q2, Officially Journal of European Desalination Society).

Electrochemical, using the interaction between electrical current and chemicals to run its reactions, is a new and relatively untested water treatment methods. However, within this project, it has shown its promises: being a simple system, easy to set up and to run. After five hours, practically all colors have been removed, with values of COD and BOD all fall within acceptable limits in Vietnamese Discharge for Wastewater. Despite being made on a small pilot scale, the water treatment systems only have a similarity in operational cost compared to a full-scale operating system using biological agents.

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Textile water treatment systems block with the electrochemical method

3. The future of water treatment is promising

More and more research and project on water treatment have been developed lately as a direct response to the disastrous state of our environment right now. A new approach like Tran Le Hoang’s project is indeed the needle in the haystack the industry is waiting for. With the joint efforts of scientists and industries, there is hope that the water problem will be solved in the near future.

As a research-oriented university, VGU always cares about projects that affect the pressing issues in the world. Environment, water treatment, and climate change applications are one of the school’s main research directions. The Water Environmental Technology Labs at VGU is a modern and high-end lab in the field. Aim to present the students with new areas and methods of sustainable urban drainage, water supply, water treatment, and urban water management. The lab is accessible for the learning and scientific research of WTE students, provide them the exposure to the latest tech. With this strength in facilities, along with the support from our experienced lecturers, it is expectant that more researches on this water treatment topic will be carried out shortly, preferably by VGU students.

Reference: Tran Le Hoang, Tran Le Luu (2020) Fabrication of textile wastewater treatment block unit using the electrochemical method, Desalination and Water treatment, Accepted Manuscript.

VGU offers the 4-semester master’s program of Water Technology, Reuse, and Management (WTE) in associate with TU Darmstadt. Graduates will learn to define and describe the challenges of water treatment, water reuse, and water management of fast-growing cities and rural areas in a wide range. They know methods and processes which could be able to solve such problems as well as their advantages and disadvantages. The graduates can decide which methods and procedures have to be used to solve a particular problem, and they are also able to use such methods and processes in practice. Finally, they get the knowledge to adapt known methods and processes to develop new techniques and procedures to solve new problems in the future.