A space—time hierarchical operation scheduling method for large scale water supply system

1982 ◽  
Vol 102 (3) ◽  
pp. 125-136
Author(s):  
Kuniaki Matsumoto ◽  
Shin'Ichiro Miyaoka
Keyword(s):  
Water Supply ◽  
Large Scale ◽  
Space Time ◽  
Supply System ◽  
Water Supply System ◽  
Scheduling Method ◽  
Operation Scheduling

scholarly journals Study on the Raw Water Allocation and Optimization in Shenzhen City, China

Water ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1426 ◽  
Author(s):  
Zhiqiang Jiang ◽  
Chao Wang ◽  
Yi Liu ◽  
Zhongkai Feng ◽  
Changming Ji ◽  
...  
Keyword(s):  
Water Supply ◽  
Water Allocation ◽  
Large Scale ◽  
Topological Analysis ◽  
Supply System ◽  
Water Supply System ◽  
Practical Significance ◽  
Urban Water ◽  
Raw Water ◽  
Allocation Model

In order to allocate the raw water of the complex water supply system in Shenzhen reasonably, this paper studied the complex network relationship of this large-scale urban water supply system, which consists of 46 reservoirs, 67 waterworks, 2 external diversion water sources, 14 pumping stations and 9 gates, and described each component of the system with the concepts of point, line and plane. Using the topological analysis technology and graph theory, a generalized model of the network topological structure of the urban water allocation system was established. On this basis, combined with the water demand prediction and allocation model of waterworks, a water resources allocation model was established, aiming at satisfying the guaranteed rate of the water supply. The decomposition and coordination principle of the large-scale system and the dynamic simulation technology of the supply-demand balance were adopted to solve the model. The forward calculation mode of controlling waterworks and pumps, and the reverse calculation mode of controlling reservoirs and waterworks were designed in solving the model, and a double-layer feedback mechanism was formed, which took the reverse calculation mode as outer feedback and the reservoir water level constraint or pipeline capacity constraint as inner feedback. Through the verification calculation of the case study, it was found that the proposed model can deal well with the raw water allocation of a large-scale complex water supply system, which had an important application value and a practical significance.

Analysis of a large-scale water supply system of the Byzantine period using modern fluid mechanics

2007 ◽  
Vol 7 (1) ◽  
pp. 183-190
Author(s):  
B. Haut ◽  
D. Viviers
Keyword(s):  
Water Supply ◽  
Large Scale ◽  
Water Flow Rate ◽  
Quantitative Description ◽  
Supply System ◽  
Water Supply System ◽  
Point Of View ◽  
Field Observations ◽  
Byzantine Period ◽  
The City

In this paper, the flow of water in several elements of the water supply system of the city of Apamea is simulated. The studied elements were used at the end of the 6th century AD (Byzantine period). These simulations allow for the analysis of the water supply system from a modern point of view, in terms of water flow rate, energy loss, etc. This analysis provides a quantitative description of the water supply system of the city, supplementing the field observations.

DETERMINATION OF ARSENIC, CADMIUM, LEAD, COOPER AND ZINC IN DRINKING WATER FROM R. MACEDONIA

2018 ◽  
Vol 28 (4) ◽  
pp. 1259-1264
Author(s):  
Kiril Lisichkov ◽  
Katerina Atkovska ◽  
Neven Trajchevski ◽  
Orce Popovski ◽  
Nadica Todorovska
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Supply System ◽  
Water Supply System ◽  
Bottled Water ◽  
Cadmium Lead ◽  
The City

The presence of some chemical compounds at higher levels than maximum permissible concentrations (MPC) in the drinking water, suggests of water resources pollution. In this paper the following elements were analyzed: total arsenic, cadmium, lead, cooper and zinc. Twelve samples of water from the water supply system from the city of Skopje were examined during one year from three different springs. Also, ten samples of bottled water from three producers from the Macedonian market were tested.The determined average mass concentrations of total As, Cd(II), Pb(II), Cu(II) and Zn(II) in the analyzed water samples from the water supply system are 1.35 μg/l, 0.06 μg/l, 0.6 μg/l, 0.9 μg/l and 1,12 μg/l, respectively, and for the tested bottled water, the mean values ranges from 0.56 - 0.83 μg total As / l, 0.053 - 0.056 μg Cd(II)/l, 0.51 - 0.54 μg Pb(II)/l , 0.6 - 0.87 μg Cu(II)/l and 0.68 - 0.8 μg Zn(II)/l water.The following instrumental analytical methods and techniques were used for the analysis of the tested samples of drinking water: flame atomic absorption spectroscopy (AAS), atomic absorption spectroscopy with hydride cеll, electrothermal atomic absorption spectroscopy.The obtained results are shown in tables and graphic form. According to the obtained results a comparative analysis was carried out indicate that it is a water of good quality that can be used in different branches of the process industry.The obtained results in this paper do not exceed the values of the MPC of the Republic of Macedonia prescribed by the legal regulations for the drinking water, which confirm the health safety of the drinking water from the water supply system in the city of Skopje and the packed waters from the Macedonian market in relation to the tested elements.

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