Duo Zhang

Duo Zhang
Norwegian University of Life Sciences (NMBU) · Department of Mathematical Sciences and Technology (IMT)

About

21
Publications
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213
Citations

Publications

Publications (21)
Article
Combined sewer overflow causes severe water pollution, urban flooding and reduced treatment plant efficiency. Understanding the behavior of CSO structures is vital for urban flooding prevention and overflow control. Neural networks have been extensively applied in water resource related fields. In this study, we collect data from an Internet of Thi...
Article
Sewer overflow is a priority concern for many cities. Owing to the high density of buildings and populations, constructing new storage tanks in urban areas is getting more and more difficult. Therefore, this paper proposes a novel Inter Catchment Wastewater Transfer (ICWT) method for sewer overflow mitigation. The ICWT method aims at redistributing...
Article
Full-text available
This paper described manage sewer in-line storage control for the city of Drammen, Norway. The purpose of the control is to use the free space of the pipes to reduce overflow at the wastewater treatment plant (WWTP). This study combined the powerful sides of the hydraulic model and neural networks. A detailed hydraulic model was developed to identi...
Preprint
Full-text available
Combined Sewer Overflow (CSO) is a major problem to be addressed by many cities. Understanding the behavior of sewer system through proper urban hydrological models is an effective method of enhancing sewer system management. Conventional deterministic methods, which heavily rely on physical principles, is inappropriate for real-time purpose due to...
Preprint
Full-text available
This paper presents a novel Inter Catchment Wastewater Transfer (ICWT) method for mitigating sewer overflow. The ICWT aims at balancing the spatial mismatch of sewer flow and treatment capacity of Wastewater Treatment Plant (WWTP), through collaborative operation of sewer system facilities. Using a hydraulic model, the effectiveness of ICWT is inve...
Preprint
Full-text available
Draft for paper "Reinforcement learning for control optimization in water industry – a review", hasn't been peer reviewed
Presentation
Full-text available
presentation for my defence: "Artificial Intelligence, Hydraulic Model and Internet of Things for Sewer System Control"
Presentation
Full-text available
Presentation for my trial lecture: "Reinforcement learning for control optimization of water systems"
Thesis
Full-text available
Increased urbanization and extreme rainfall events are causing more frequent instances of sewer overflow, leading to the pollution of water resources and negative environmental, health, and fiscal impacts. At the same time, the treatment capacity of wastewater treatment plants is seriously affected. The main aim of this Ph.D. thesis is to use the I...
Preprint
Full-text available
Exploiting capacity of sewer system using decentralized control is a cost-effective mean of minimizing the overflow. Given the size of the real sewer system, exploiting all the installed control structures in the sewer pipes can be challenging. This paper presents a ‘divide and conquer’ solution to implement decentralized control measures based on...
Presentation
Full-text available
Teaching presentation for course THT311 Water Resources Management and Treatment Technologies
Conference Paper
The performance of six wastewater treatment plants, were evaluated in the cold climate of Norway. Many wastewater treatment plants in Norway were built in the 1970s and 1980s, due to effect of climate change in cold climate area of Norway, most of these treatment plants are confronting re-build or expand. Besides surface load, the performance of WW...
Conference Paper
The present particle separation studies mainly focus on particle removal in the wastewater treatment plant, however, the influence of sewer systems on particle separation is also critical. An ongoing project in Drammen, Norway is studying optimisation of particle separation and sewer systems with intelligent instruments and technologies rather than...
Thesis
Full-text available
Link to full text of this thesis at: http://hdl.handle.net/11250/198948
Conference Paper
Computational Fluid Dynamics (CFD) is a powerful tool in evaluating the performances of sedimentation tanks. Potential problems such as surface currents, internal circulation and bottom currents are identified as reasons for inefficient performance. The CFD can also be used for optimization of existing sedimentation tanks. Potential improvements ar...
Book
《全国农业职业技能培训教材:沼气物管员(高级工)》是《沼气物管员》系列教材之一,以高级沼气物管员为对象,以职业活动为导向,以职业技能为核心,以模块式的教学方法,简明扼要地介绍了完成户用沼气后续维护中每一项具体操作的方法、程序、步骤等。教材共分为6章,以通俗易懂的文字介绍了户用沼气系统中的发酵装备、输配装备、使用装备、配套装备、沼肥综合利用、后续服务与运营等方面的知识和技术,旨在使正在从事或准备从事沼气物管员的从业者具备高级工的专业技术和能力。
Article
Full-text available
This study focuses on using solar energy to enhance biogas production. In this research one digester under the ground was used as study object, which is located at Runzhen middle school in Chunhua county, Shannxi province, and its volume is 100 m3. The raw material was human manure, which was fed to the system every day. The average temperature in...
Article
【Objective】The research was to explore the possible use of parabolic trough solar concentrators(PTC) as heat source of biogas engineering and to supply theoretical and practical reference for heating problems of biogas engineering in cold aera.【Method】According to the characteristics of PTC,a kind of biogas engineering heating system was designed b...

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