There many Conventional Methods to treatment water such as chemical and biological methods which can not remove organic compounds fro water, so we can use corona discharge for generate plasma leads to generation of free radicals which can remove organic compounds from waste and drinking water.

1. Basiony Shehata Atia Mohamed
Faculty of Energy Engineering
4th Year
Electrical Engineering Department
basiony1996@energy.aswu.edu.eg

2. Application of Corona Discharge to treatment
water.
Electricity !

3. Mean, You will Shock Water?

4. Various Processes of treatment water:
 Based on
Biological Methods Chemical Methods. Advanced Oxidation Processes
[AOP]
• Widespread, • Used to treat drinking water, • Removal of hazardous organic
pollutants from groundwater and
wastewater.
• Low cost, • Wastewater, Groundwater. • Required Generation of highly
reactive species [hydroxyl radicals]
• Unable to remove effectively
Many classes of pollutants .
• Contaminated with Organic
Compounds.
• Achieved by electrical discharges
(AC, DC, pulsed).

5. Radicals
Oxidant Oxidation Potential [V]
Hydroxyl radical 2.80
Atomic oxygen 2.42
Ozone 2.07
Hydrogen peroxide 1.77
Permanganate 1.67
chlorine dioxide 1.5
Chlorine 1.36
- Pulsed high voltage
discharges in water
generate plasma that
initiate a variety of
Chemical and Physical
effects.
- Produces various reactive
chemical species
[Radicals], OH·, H·, O·,
HO2· & [molecular],
H2O2, H2, O2 .

6. Types of Matter:
1. Solid
2. Liquid
3. Gas
4. Plasma

7. Plasma Generation:

8. Types of Electrical Discharge in Water:
1. Electrical Discharges Above the Water Surface.
2. Underwater Electrical Discharges [Directly in Water].

9. 2. Above Water:
• DC high voltage electrode is placed above the
surface of an electrolyte.
• Glow discharge is established between high
voltage electrode and electrolyte surface in
water vapors formed in gas-liquid interface.
• Formation of OH· radicals, O atoms and their
reaction products ( O3 , H2O2 etc.) can be
produced in the gas-liquid interface that can
initiate reactions in the water.
• CO2 into air and H2O Pure Water.

10. 1. Directly in Water:
• Both high voltage and ground electrodes
are placed in liquid phase [corona
discharges].
• Pulsed streamer corona discharges in water
with point to plane electrode configuration.
• Produces various reactive chemical species
[Radicals], OH·, H·, O·, HO2· & H2O2, H2,
O2 .
• CO2 into air and H2O Pure Water.

11. Summary of [AOPs] :
 Applied Electrical Discharge.
 Plasma formation.
 Formation of strong oxidant [Radicals].
 The Reaction of these oxidant with organic contaminates in Water.
 Reaction products CO2 into air and H2O Pure Water.
Note: AOPs Cannot Remove Toxic.

13. Thank you