Transcript ULTRA VIOLET STERILISER

ULTRA VIOLET
STERILISER
Cobalt SC & SCM 600
UV24 - 22/58 US gpm
Sterilight – Cobalt SC & SCM
90.8 - 227 litres per minute
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4-log (99.99%) destruction of E.coli and other bacteria, virus and protozoan cysts (Giardia and
Cryptosporidium) at rated flow.
Cobalt ICE controller with audible alarm lamp failure as well as visual display for remaining
lamp life and total days of operation and in the monitored systems, % UV output.
Compact design incorporating 304 stainless steel reactor chamber, 1” ports
Easy servicing – no need to disconnect water flow to change UV lamp
Up to 227.1 litres per minute and still achieve UV dosage approx 3 times higher than required
to eradicate E.coli bacteria.
Monitored systems have a true 254nm UV intensity monitor to warn you of any change in water
quality that may cause the water to be unsafe to drink
Optional solenoid and remote monitoring
Seven year warranty on reactor chamber
Five year pro-rata warranty on ballast
One year pro-rata replacement on UV lamp
Ultra Violet Lamps
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Disinfection using ultraviolet (UV) light is recognised as the
ecological choice in disinfection techniques.
UV effectively destroys microbiological contaminants without
adding anything to the water and creates no residual by-products.
It is recommended that no rural surface waters be consumed
without adequate microbiological treatment, regardless of test
results.
Ultraviolet sterilisers incorporate natural ultraviolet light energy to
eradicate microbiological contamination.
High quality units are guaranteed to be virtually 100% effective
against Spores, Algae, Moulds, Viruses, a wide range of Bacteria,
and even Giardia and Cryptosporidium cysts.
Some UV units rely on 1micron filtration to reduce cysts – a less
effective and unreliable method.
The Ultra violet unit has a stainless steel chamber and inside, a
quartz sleeve -like a glass tube (that the UV bulb fits within), with
the water swirling around it throughout the length of the unit.
The water enters near one end and exits near the other, treated
and safe for use.
Ultra Violet Lamps
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The stainless steel unit is usually mounted in the pump shed or where the
water enters the property, so all water flows through the unit, thus every
tap would be treated for microbiological contaminants and be safe for use.
Lamp can be changed without interrupting the water flow
A 5-micron filter cartridge is needed to ensure the water is clear enough
for the Ultra Violet rays to penetrate the water to achieve the desired kill
rates.
UV treatment does not reduce any chemicals or smell/taste.
If these contaminants are of concern you may consider an additional
‘Big Blue’ housing fitted with a refillable carbon cartridge to treat all the
water for the whole house, or an underbench water filter unit such as the
“AQUA K” for food preparation, cooking and all drinks.
Installation and Water Flow
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In areas prone to power surges, power outages or electrical storms, Surge
protection devices or Uninterruptible Power Supplies (UPS) should be fitted.
If Mounting horizontally, flow can go either way but ports must be uppermost.
If Mounting vertically, flow must come in from the bottom port.
In all cases, remember to leave room for the lamp and quartz sleeve to
be extracted
Operational Maintenance
and monitoring
UV has no residual effect – it only works while the
organisms are in the reactive chamber
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Upon commissioning, all downstream lines must be chemically
disinfected
Thereafter, periodic chemical disinfection as least once every 3 months
should be undertaken.
UV dosage is effected by poor transmittance of the
light or sediment in the water
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Ensure all pre-filters and conditioners are sized appropriately and
regularly checked and cleaned or replaced as necessary
Periodically check quartz sleeve and clean as necessary
Replace lamp every 12 months or 9000 hours
UV effectiveness is directly related to dosage (i.e.
Contact time or organisms to the UV light)
Installation
Large Surface Type Filtration
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Complete with powder coated
mounting bracket, bolts, plus
opening spanner.
Available in 10” or 20” with 1”
ports
Pressure release button to ease
opening of the housing during
maintenance. Also to bleed air
out on start-up.
Pleated Polyester Filter
Reusable/Washable
(for coarse dirt loadings).
20 micron, 5 micron & 1
micron.
Highly efficient pleated filter
cartridges for low pressure
drop, high flow capability,
increased dirt removal, long
filter runs – which all adds up
to the lowest cost per Litre
filtered
Specifications
Water passed through the unit must fall
within the following parameters:
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Iron: <0.3mg/L
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Hardness: <120mg/L
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Turbidity: <1NTU
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Manganese: <0.05mg/L
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Tannins: <0.3mg/L
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UV Transmittance: >75% (call factory
for recommendations on applications
where UVT <75%)
* Where total hardness is less than 120mg, the UV
unit should operate efficiently provided the quartz
sleeve and/or sensor probe is cleaned periodically. If
total hardness is over 120mg the water should be
softened
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Assumes water does not contain any physical staining
components which could potentially cloud the UV
transmission
Protozoa – Giardia, Cryptosporidium etc
Flow Rate and UV Dosage
The Flow rate is approximately 5 times greater than is required to
destroy E.coli
Cryptosporidium & Giardia lamblia
eradicated at <10 mJ/cm²
E.coli eradicated at 6.6 mJ/cm²
Disinfection of Lines
After the BB Housing and the UV Unit have been installed and are operating all downstream water lines
must be disinfected.
If preferred and to save disinfecting the whole tank, a generous quantity of bleach can be poured into
the BB Housing. The Housing is then closed and water run through until chlorine is detected at each
tap in the house. Close each tap and leave for as long as possible (preferably overnight) for the
strong chlorine solution to disinfect all the water lines.
Open the taps and flush out the chlorine solution, with the UV treated water.
Calculating Your Tank Volume:
Square Tank
Volume in litres is equal to length x width x depth of water x 1000. (All measurements of tank
dimensions should be made in metres).
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For example, a cubic tank measuring 1m x 1m x 1m would have a volume of
1 x 1 x 1 x 1000 = 1000 litres.
Circular Tank:
Measure the diameter and the depth of water. The tank volume in litres is equal to 0.785 x diameter x
diameter x depth x 1000.
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For example a tank 1 metre in diameter and 1 metre deep would have a volume of
0.785 x 1 x 1 x 1 x 1000 = 785 litres.
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The disinfection Tables, can be used to calculate the amount of household bleach you would need.
For example, a tank with a volume of 1000 litres requiring 5 g/m³ for disinfection purposes needs
167ml of plain household bleach.
An accurate measure, such as a graduated measuring container, should be used to measure the bleach.
As a rough guide, cups are approximately 250ml and milk bottles 600ml. A 167 ml measure is
approximately two thirds of a cup.
After you have dosed your tank and mixed it well, the dosed water should be run through all your
household lines so that the newly disinfected water comes through the taps.
Disinfection
Table
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To use Table
Calculate volume of tank in litres
Select dose rate required at top
of the table:
*1 g/m³ routine disinfection for
clean water
*2 g/m³ routine disinfection for
reasonably clean water
*5 g/m³ period disinfection for
tanks and pipes
*10 g/m³ superchlorination for
biological contaminated tanks.
Remove contamination, allow
water to sit for 24 hours before
drawing. Boil before drinking
3. Read the amount of sodium
hypochlorite (in millimeters) to
be added where the dose
required corresponds to the
volume of the tank
4. Add required millilitres of fresh
plain household bleach and mix
thoroughly.
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For any further enquiries or
information please contact:
Sue Kelly
Free Phone: 0800 177 000
E mail:
[email protected]