IWA Publishing

How Can Decentralized Water Systems Save Money for Governments and Communities?

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Courtesy of IWA Publishing

The construction of water treatment facilities has traditionally been directed by the community’s need for reliable and dependable water quality.

However, particularly in recent years when budgets have not grown to meet the expanding population, the need to lower the costs of delivery and production of drinkable water has become a factor in this equation.

In the past, many countries have approached water delivery as a centralized utility, and have invested millions of dollars in infrastructure to treat, manage, and deliver water to customers. At this point, some of this infrastructure has begun to age and crumble, demanding funding, upgrades, and technology enhancements.

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Customer comments

  1. By Sadyrbek DJIGHITEKOV on

    Dear Azita, For save money it is necessary to design effective of water treatment plants units. For example, Everybody knows about Water Treatment Plants for clean water. But everyone does not know about problems over there. Settling Tanks is a main unit of any Water Treatment Plants, there are must be suspended about 95-98% dirty particles. But in really there are suspended just 40-50% solids. It is a result of incorrect design. What is the reason? The reason is next. At the present time for Settling Tanks Design Engineers are used traditional (conventional) sedimentation theory. But accordance this theory it is not possible to calculate depth of Settling Tanks accurately. Why? Because more than 100 years ago A.Hazen (1904) suggested Newton's gravitational law. It was a fatal mistake because that Newton's law is considering just one external force in the water: gravitation. For decision this problem T. Camp (1946) suggested artificial approach: "ideal settling tank" for calculate depth theoretically. However, everybody can not believe in ideal things in practice. As a result specialists in the field of World Water Industry cannot calculate correct sizes of Settling Tanks because all handbooks and manuals of the Global Water industry are giving traditional sedimentation theory yet. Correct Settling Tanks Design can be done if specialists will consider three external forces acting to the any elementary volume of water: gravitation and forces of hydrodynamical pressure that normal to both sides of elementary volume and directed to the different sides. It is Newton's Second Law. Based on the Newton's Second Law I devised Alternative Sedimentation Theory. As a result everybody: scientist, engineer and even student can calculate correct sizes of Settling Tanks, create models and to choose effective of one. More information on the web ( click show on the extended line: http://en.wikipedia.org/wiki/Talk%3ASettling If you have any questions, please let me know With best wishes, Sadyrbek Djighitekov, Ph.D e-mail: djiga_50@mail.ru tell phone: 1-513 -886-7486 Indianapolis, IN, USA