water engineering Articles
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The 1st Harmony on the Secret Garden
It was the time for everyone to feel the harmony that was made by Professor Mooyoung Han, the one who brought harmony in water engineering concepts. Professor Han’s activities on water engineering concept are very well known in everywhere in this world. Especially during long time, he tried to bring safety, beauty and peace to the world by his outstanding ideas on rainwater concept. He did ...
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Sanitation under challenge: contributions from the social sciences
This paper reviews the contribution the social sciences can make to the challenge of providing access to sustainable sanitation services and infrastructures for billions of people, in both the over- and underdeveloped parts of the world. The paper reviews and discusses three particular social scientific topics relevant for the sanitation challenge: the nature of socio-technical change, the issue ...
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FORUM: Balancing basics and applications in teaching environmental and water resources engineering
This short forum suggest that engineering practitioners, asked about what they expect out of a fresh engineer immediately after their graduation in terms of on-job skills and technical training, prefer that an engineer be able to hit the road and run without too much on-job training. It suggests that engineering undergraduate curricula need to have a good balance in offering both basics and ...
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Roles of the Water Court and the State Engineer for water administration in Colorado
Colorado manages water using an administrative structure that is unique among the United States following the doctrine of prior appropriation: Water rights are adjudicated not by the State Engineer, but by Water Courts – separate from and operating in parallel to the criminal and civil courts – established specifically for this purpose. Fundamental to this system is the notion that water ...
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Statistical characteristics of rainfall in the Onkaparinga catchment in South Australia
The main objective of this study was to investigate the statistical characteristics of point rainfall and the novelty of the work was the development of a hybrid probability distribution that can model the full spectrum of daily rainfall in the Onkaparinga catchment in South Australia. Daily rainfall data from 1960 to 2010 at 13 rainfall stations were considered. Spatial dependency among the ...
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Shenzhen Water Group Luofang WWTP Phase Two Sludge Reduction Project - Case Study
PROJECT BACKGROUND Project: Sludge Reduction Project of Shenzhen Water Engine Ering Co., Ltd. Sludge Type: Municipal Sludge Construction: May., 2019 Sludge Scale: 400T/D Completion: Jul., 2019 PRQJECT OVERVIEW Equipment Selection: SBDD288O0SL*6 Dewatering Machine: Plate and Frame Filter Press Wet Moisture: 65% Dried Moisture: 50% Features Efficiency Innovation Environment ...
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Uncertainty in calibrating generalised Pareto distribution to rainfall extremes in Lake Victoria basin
Uncertainty in the calibration of the generalised Pareto distribution (GPD) to rainfall extremes is assessed based on observed and large number of global climate model rainfall time series for nine locations in the Lake Victoria basin (LVB) in Eastern Africa. The class of the GPD suitable for capturing the tail behaviour of the distribution and extreme quantiles is investigated. The best ...
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What are the advantages of Truck-mounted Robot Shotcrete Machine compared with traditional shotcrete machine?
What are the advantages of Truck-mounted Robot Shotcrete Machine compared with traditional shotcrete machine: 1. Easy to move, can be transferred, not restricted by the venue There are basically four to six outriggers fixed on each Truck-mounted Robot Shotcrete Machine, which can be lifted up when not in use. It is simple and convenient, and can be transferred to the next site at any time, with ...
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First results of a study of the Etruscan tunnel and other hydraulic works on the
Ponte Coperto stream (Cerveteri, Rome, Italy)The Etruscan tunnel called Ponte Coperto is located NW of Rome, near the town of Cerveteri. The Ponte Coperto tunnel, mapped for the first time during the present research and dug mainly in volcanic tuff lying below the lava flow, was built to drain a valley of about 8.5 km2, probably between the VII and VI century B.C. Before the tunnel construction, part of the valley was occupied by a swamp, ...
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10CBM ISUZU Foam Water Fire Fighting Trucks
Foam fire trucks are equipped with a variety of fire fighting equipment. Foam fire trucks are currently the primary tool for the most basic mobile fire fighting equipment. Fire engines are usually stationed in the fire department. In the event of an emergency, the fire trucks will arrive at the scene. Most of the fire engines sold are painted in bright red (in some areas they may also be painted ...
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Optimization of pumping schedule based on water demand forecasting using a combined model of autoregressive integrated moving average and exponential smoothing
Stable water supply to end users is the most important element in water supply systems (WSSs). The portion of energy used by the water distribution system is up to 40% of the total energy consumed by WSSs. To save energy cost for pumping systems, a number of attempts have been made. Especially, an optimization scheme for scheduling the water-pumping operation has attracted the interest ...
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Tidal technology to stop flooding
A large 1.6 metre valve that stops tidal waters getting into the stormwater network will help stop flooding in the city centre during heavy rainfalls. High tidal levels and heavy rain cause problems in Porirua, New Zealand. Porirua was the first Council in New Zealand to test the valves, which are a Scandinavian design called WaStop. The Councils Water Services Engineer Desmond Scrimgeour ...
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A history of water distribution systems and their optimisation
Water distribution systems have a very long and rich history dating back to the third millennium B.C. Advances in water supply and distribution were followed in parallel by discoveries and inventions in other related fields. Therefore, it is the aim of this paper to review both the history of water distribution systems and those related fields in order to present a coherent summary of the ...
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Bibliometric analysis of biosorption technology in water treatment research from 1991 to 2004
A bibliometric analysis based on the Science Citation Index was carried out on biosorption technology-related publications during the time span of 1991 to 2004 in water treatment research in the ISI subject categories of environmental engineering, environmental sciences, and water resources. Results showed that yearly production has sharply grown. The US and Canada respectively produced 13% and ...
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Experimental characterization of PVC-O pipes for transient modeling
The increasing use of plastic materials has modified several aspects of design and management of water distribution systems. With reference to the numerical modeling of transients, the definition of a correct rheological model of the pipe material is receiving an increasing interest. In this paper the behavior of the molecularly oriented polyvinyl chloride (PVC-O) pipes during transients is ...
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Transient tests for locating and sizing illegal branches in pipe systems
In pipe systems illegal branches can take away remarkable water resources with negative effects from both the economic and technical points of view. Difficulties in pointing out illegal branches by means of steady-state pressure and discharge measurements are mainly due to the fact that, of course, such systems are not active according to a regular time schedule. In this paper the possibility of ...
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Does water go through geotextile?
Geotextiles are divided into woven geotextiles and nonwoven geotextiles. It is a permeable geosynthetic material made of synthetic fibers through needle punching or weaving. Geotextile has excellent filtering, isolation, reinforcement, and protection, and has high tensile strength, good permeability, high-temperature resistance, freezing resistance, aging resistance, corrosion resistance. It is ...
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Damage of concrete by sulphate attack and alkali-silica reaction
A holistic approach was adopted to examine concrete durability by taking into account both physical aspects (such as capillary porosity, micro-cracking, macrovoids) and chemical reactions. A ternary representation of the complex damage process in reinforced concrete structures was used by examining the coexistence of the main three factors affecting the concrete durability: a) interconnected ...
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Hydraulic characterization and transient response of pressure reducing valves: laboratory experiments
A pressure reducing valve (PRV) regulates the outlet pressure regardless of the fluctuating flow and varying inlet pressure, thereby reducing leakage and mitigating the stress on the downstream water distribution network (WDN). Notwithstanding the crucial importance of PRVs, few experimental data are available in the literature. The aim of this paper is to overcome this gap by means of the ...
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Porirua New Zealand – WaStop® DN225 - Case Study
Porirua City located 20 km north of Wellington has over 70 storm water outlets into the harbour. A number of these outlets are very flat on their approach to the harbour which generally means they are severely influenced by high tides. The problem with these outlets is that if a rain fall event coincides with a high tide, the ability of the storm water network to discharge is severely ...
By Wapro AB
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