Tianjin Research Institute of Water Transport Engineering

Tianjin, China

Tianjin Research Institute of Water Transport Engineering

Tianjin, China
SEARCH FILTERS
Time filter
Source Type

Wang J.,Tianjin Research Institute of Water Transport Engineering | Li X.,Tsinghua University
Advanced Materials Research | Year: 2012

The electrochemical treatment of wastewater containing 2, 4, 6-trichlorophenol has been carried out experimentally with synthetic boron-doped diamond (BDD) thin film electrodes. Removal rate of COD, instant current efficiency (ICE) and energy consumption were investigated under different current density. The influence of supporting media is reported, which plays an important role in determining the global oxidation rate. The oxidative chloride is stronger than peroxodisulphate. The electrochemical characteristics of boron-doped diamond electrodes were investigated in comparison with active coating Ti substrate anode (ACT). The experimental results show that BDD is markedly superior to ACT due to its different absorption properties. © (2012) Trans Tech Publications, Switzerland.


Wei Y.,Tianjin University | Wei Y.,Tianjin Research Institute of Water Transport Engineering | Ji M.,Tianjin University | Li R.,Tianjin University | Qin F.,Tianjin Tanggu Sino French Water Supply Co.
Waste Management | Year: 2012

Granule sequencing batch reactors (GSBR) were established for landfill leachate treatment, and the COD removal was analyzed kinetically using a modified model. Results showed that COD removal rate decreased as influent ammonium concentration increasing. Characteristics of nitrogen removal at different influent ammonium levels were also studied. When the ammonium concentration in the landfill leachate was 366mgL -1, the dominant nitrogen removal process in the GSBR was simultaneous nitrification and denitrification (SND). Under the ammonium concentration of 788mgL -1, nitrite accumulation occurred and the accumulated nitrite was reduced to nitrogen gas by the shortcut denitrification process. When the influent ammonium increased to a higher level of 1105mgL -1, accumulation of nitrite and nitrate lasted in the whole cycle, and the removal efficiencies of total nitrogen and ammonium decreased to only 35.0% and 39.3%, respectively. Results also showed that DO was a useful process controlling parameter for the organics and nitrogen removal at low ammonium input. © 2011 Elsevier Ltd.


Li M.-G.,Tianjin Research Institute of Water Transport Engineering
Proceedings - 2013 4th International Conference on Digital Manufacturing and Automation, ICDMA 2013 | Year: 2013

In coastal, estuarine and bay waters, tidal current is the basic sea water movement and one of main hydrodynamic factors. Affected by bottom topography, coastline and islands, the tidal current assumes itself to-and-fro movement, that is, the flood current and ebb current are basically in the opposite direction, with difference of about 180°. One of the important indexes to depict to-and-fro tidal current force is tidal average current velocity during flood tide or ebb tide. Integrating measured tidal current process in practical sea area, this paper carries out studies and comparisons on three methods to calculate tidal average current velocity during flood tide or ebb tide and three methods to calculate tidal average current velocity in a complete tidal cycle. The study show that there exist differences in the results from different methods. It is suggested that tidal average current velocity during flood tide or ebb tide be calculated by integral average method and tidal average current velocity in a complete tidal cycle by weighting average method. © 2013 IEEE.


Peng L.,Tianjin research institute of water transport engineering
Applied Mechanics and Materials | Year: 2014

This paper introduces key technology in design and development of a lightweight WPF-Based electronic map engine, systematically analyzes characteristics of WPF technology, designs the structure of electronic map engine components, elaborates on data organization and management, vector and raster spatial data indexing method, presents a electronic map engine specific for nautical map display style. © (2014) Trans Tech Publications, Switzerland.


Peng L.,Tianjin research institute of water transport engineering
Advanced Materials Research | Year: 2014

Port and waterway is important transportation infrastructure, smart waterway system can improve the waterway’s management with modern information technology, such as database, network, internet of things, geographic information system, etc. This paper analyzes the typical structure of a smart waterway, introduce involved key technology in the construction of smart waterway. © (2014) Trans Tech Publications, Switzerland.


Xu Y.,Tianjin Research Institute of Water Transport Engineering
Proceedings of the International Offshore and Polar Engineering Conference | Year: 2015

The study focuses on achieving a fast, continuous and high-resolution predicting model for temperate storm surge for Bohai Bay. Harmonic analysis was applied to provide open boundary conditions; and local deepening, water range reducing were to deal with the boundary of shallow water. The model could achieve the non-linear effect between storm surge and astronomical tide totally. Based on the upper conditions, three storm processes were simulated separately in 5min by the above-mentioned numerical model. Final results show that computed results are agreed well with observed values in three sea level and water elevation processes. We believe the model with great applicable value can accurately forecast sea levels and elevations due to storm surge in this region. Copyright © 2015 by the International Society of Offshore and Polar Engineers (ISOPE).


Nie X.,Tianjin Research Institute of Water Transport Engineering
Proceedings of the International Offshore and Polar Engineering Conference | Year: 2015

In the coasting area, severe storm and wind wave flood the cities and have bad damage on structures. Most severe storm surges are caused by strong cyclones, as we know wind is the most important factor. This study coupled storm and wave models together, considering wind stress and radiation stress to simulate the storm processes. For the study, we focus on temperate storm surge in the Bohai Bay which are caused by temperate cyclone or front winds. The simulating work performed before and after considering the effect of radiation stress on water level and current during storm process. The comparison shows that the effect of the radiation stress on water level and current speed depends on the different storm surge process, the influenced degree has a relationship with the distribution of wind stress. For example, Bohai bay is controlled by NE wind, the current speed increased obviously due to the effect of radiation stress, and the water level rose accordingly. Copyright © 2015 by the International Society of Offshore and Polar Engineers (ISOPE).


Peng L.,Tianjin research institute of water transport engineering
Applied Mechanics and Materials | Year: 2014

Side scan sonar image has disadvantages such as low-resolution, poor image quality, random factors’ disturbance, these disadvantages cause the sonar image less visual perception, poor readability and many other shortcomings. In this paper, geometric correction method and image processing technology were studied, and also a data processing software was developed to improve the side scan sonar data processing from two aspects of data production accuracy and processing efficiency. © (2014) Trans Tech Publications, Switzerland.


Zhao H.,Administrative Commission of Tianjin Dongjiang Free Trade Port Zone | Li G.,Tianjin Research Institute of Water Transport Engineering
Procedia Environmental Sciences | Year: 2011

When treating oily wastewater, fibrous coalescer technology has the advantages of convenient operation, longer service period of coalescence materials, high oil removal efficiency, without additional reagent, high ability in value maintenance of recovered oil, thus has attracted increased interests in recent years. Extensive research has been done to investigate the theoretical oil-removal mechanism, and lots of works have been conducted to explore the application of fibrous coalescer in the treatment of various refractory wastewaters, especially oily wastewater. This paper provides an instruction of coalescence principles, materials and equipments, as well as its development and application. © 2011 Published by Elsevier Ltd.


Li M.-G.,Tianjin Research Institute of Water Transport Engineering
Journal of Hydrodynamics | Year: 2010

The Oujiang Estuary is a very complex tidal estuary with many islands, which is located in Zhejiang Province, China. Reclamation of areas between islands will create a great amount of land. In this article, the feasibility of reclamation of areas between Lingkun Island and Niyu is studied from the angle of its impacts on the hydrodynamic sediment environment. First, the natural hydrodynamic and sediment conditions and the seabed evolution are analyzed according to in-situ data. Second, numerical models of tidal current and sediment movement under the combined action of wave and current are set up with irregular triangular grid to carry out numerical simulations. The following conclusions are drawn from the study. (1) The areas between Linkun Island and Niyu are not a tidal passage. Wenzhou Shoal has been aggraded gradually, a condition favorable for reclamation. (2) The reclamation is feasible as far as its effect on surrounding hydrodynamic sediment environment is concerned. (3) The reclamation has great favorable socio-economic impacts. © 2010 Publishing House for Journal of Hydrodynamics.

Loading Tianjin Research Institute of Water Transport Engineering collaborators
Loading Tianjin Research Institute of Water Transport Engineering collaborators