OZONE DRINKING WATER SYSTEM

CONTENTS

• Properties of Ozone

• Production of Ozone

• Water Treatment Plant – 25 m3/hr

• Ozone Generation System

OZONE OXYGEN CHLORINE

O3 O2 CI2

UNSTABLE STABLE STABLE

PROPERTIES OF OZONE

• Heavier than the air.

• Irritating pale blue gas.

• Very reactive and unstable.

• Explosive and toxic, even at low concentrations.

• 14 times more soluble than oxygen.

PRODUCTION OF OZONE

• Electrolytic and chemical reactions.

• Exposing oxygen molecules to UV radiation at 185 nm wavelength.

• Corona discharge.

• Cold plasma method, pure oxygen gas is exposed to plasma created by

dielectric barrier discharge.

+

+e-

OZONE PRODUCED BY CORONA DISCHARGE

PLANT SETUP - 25 M3/HR

COMPRESSOR

Function : Supplies minimum pressure required for ozone system - 3.5 Kg/cm2

Capacity : 410 LPM Max Pressure : 18 Kg/cm2

Air Compression : 6 (starts) – 9 (stops) Kg/cm2

Safety Valve : 10 Kg/cm2

• Removal of water (moisture content).• Check safety valve pressure adjustment.

FILTERS (Air Filter and Oil Filter)

Function : Protects the ozone system from dust, moisture and oil due to high voltage.

Max Pressure : 11 Kg/cm2

Working Pressure : 6 – 9 Kg/cm2

• Cleaning and removal of moisture content, dust particles everyday from the filters.• Checking of filter efficiency.

OXYGEN GENERATOR

Function : Removal of moisture and nitrogen.

Max Pressure : 11 Kg/cm2

Working Pressure : 5 Kg/cm2

Media in each : Silica Gel – Absorbs Moisture & Molecular Sieves – Absorbs NitrogenEach cycle time : One column working, another in regeneration at intervals 3 – 4 minsSolenoid Valve : Pressure detection for regeneration and draining point for nitrogen.

• Installing the generator in the correct direction of flow.• If Media in the indicator filter turns to white then the media in generator columns needs to be

replaced.

SURGE TANK

Function : Builds and maintains uniform pressure of oxygen for ozone generation.

Max Pressure : 10.5 Kg/cm2

Safety Valve : 10 Kg/cm2

Outlet Pressure : 3.5 Kg/cm2

• Installing the tank in the correct direction of flow.

OZONE CONTROL PANEL

Function : Controls the flow, pressure of oxygen and current to the ozone system.

Pressure Regulator : Maintains constant pressure at 3.5 Kg/cm2.Flow Regulator : Maximum flow 150 LPMPower Control : Maximum current 5 A.

Timer : Set to 15 mins for flushing the cells at the start of the system.Oxygen Flow Switch : Connected to power supply to switch of the system when the flow is

less.

• Flushing• Oil Coolant for transformer.

OZONE GENERATOR

Function : Production of Ozone.

No. of Dielectric cells : 7 Nos. (6 circular and 1 in center)Voltage : 8000 - 10000 V Maximum Capacity : 100 gm/hr.

• Check the water recirculation system every time.

FILTER FEED PUMPS

No. of Pumps : 1 W + 1 S Type of Pumps : Mono blocks Capacity : 35 m3/hr @ 25 m Head

• After installation of pumps, direction of rotation of motor should be in accordance to flow.

FILTERS (PSF & ACF)

Dimensions : 2.0 m H x 1.20 m DiaTest Pressure : 11 Kg/cm2

Multiport Valves : Filtration, Backwash, Rinse, Recirculation, Waste, Closed & Pressure gauge

• Backwash is necessary when the pressure gauge reading increases by approx 2 Kg/cm2.• When operating multiport valves, pumps need to be switched off.

BOOSTER PUMP

No. of Pumps : 1 WType of Pump : Mono block, SSCapacity : 25 m3/hr @ 10 m HeadRecirculation : 5 m3/hr

• After installation of pump, direction of rotation of motor needs to be checked.• Ensure that recirculation of water to the ozone system.

CONTACT SYSTEM

Venturi : 2 Nos.Capacity : 15 m3/hrSequence : Convergent, Throat and DivergentMixing Tank : SS , 330 mm H x 300 mm Dia (20 L)

• Venturi to be installed in the correct direction as per the flow to create negative pressure.

CONTACT CHAMBER

Dimensions : 1.75 m H x 0.95 m DiaVolume : 1250 LDetention time : 3 mins

• Diffusers are installed at the bottom of the inlet pipe to have a better mixing.• The Oxidation reduction potential is measured and displayed on the ORP panel.

• Reactions take place several thousand times faster than those of chlorine and eliminates: Inorganic (iron, manganese, hydrogen sulphide, bromide) Organic (bacteria, viruses, protozoan’s )

• According to the U.S. Council Of Environmental Quality:

“Cancer risk among people drinking chlorinated water is 93% higher than among those whose water does not contain chlorine.”

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