10-03-2012, 04:28 PM
Embedded based water purification system
Abstract
The phenomenon of violet glow, hissing noise and the production of ozone
gas in the overhead transmission line known as corona is used in our project for the
production of ozone gas. The gas produce out of the device can be used for the
treatments of drinking water disinfections and air purification.
The device has a discharge tube in which high electric field is applied so
as to breakdown the ozone present in the air. This phenomenon occurs at field
strength of about 25 KV at normal room temperature. This unit employs a high
voltage of 30 KV peak at a frequency of 15 KHZ to 20 KHZ. Such a high Voltage is
developed by means of Line output transformer or Fly-Back Transformer driven by a
embedded controller.
The amount of Ozone output can also be controlled indirectly by varying
the D.C input voltage by using a atmel 8 bit microcontrollers. Ozonation is 3125
times more powerful than chlorination. The unit can treat 5 liters of impure water in
about 2 minutes. The nascent oxygen makes ozone a very powerful disinfecting
agent. Ozone destroys all bacteria by cell lycing.
This project is also provided with simple embedded protection circuit,
using 18F877 microcontroller which prevents the POWER COMPONENT from being
damaged, by High voltage spikes and low voltage surges. The unit can be
continuously operated for four to six without much heating of the power electronic
devices.
