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LASER DEVICE FOR WATER TREATING Patent no571/2010-Egyptian Patent Office HEBATALRAHMAN AHMED –EGYPT Hebatalrahman11@yahoo.com

**Summary** Device for water purification and sterilization in two stages: the first stage uses infrared lasers to convert water into steam condenses on polished metal surface and gathered in a half cylinder, which has a valve and speed sensor to control the speed of water flow to the second stage. In second stage, water is exposed to UV laser radiation. Water gets rid of suspended solids and salts in the first stage, while it disinfected and cleaned from bacteria and organic material in the second stage. The device is characterized by easy maintenance. It does not cause any color or taste change of water, it has ability of automation control, and installing directly on water source.

**New topics** The new method is safe, physical method with no change in the chemical composition. For drinking &medical& Industrial The device can be mounted on tap water directly to avoid the pollution problems in pipes lines and distribution networks. All parts of the device are easily cleaned, replaced and maintained with relatively reasonable costs when compared with normal filters. It controlled by valves

. **Water Disinfection Unit**

P13-41  
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