Installation and operating instructions: JUDO UV disinfection system JUV 10-110 G/GS
All rights reserved.
JUDO Wasseraufbereitung GmbH
© JUDO Wasseraufbereitung GmbH
Postfach 380
D-71351 Winnenden
Translation into foreign languages and reproduction, even in excerpt form, is only permitted with special
approval.
Tel. +49 (0)7195-692-0
Fax +49 (0)7195-692-188
Revision level: 03.05.2017
E-mail: [email protected]
Internet: www.judo.eu
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4.5
Operating resources
Designation
Order no.
Cleaning agent concentrate (38% phosphoric acid, 2x 1 litre)
8721216
Tab. 7: Operating resources
Operating resources are not supplied!
4.6
Accessories
Designation
Order no.
JUDO solenoid valve with time control JEM-AT
⅜"
(flush valve)
8351008
JUDO solenoid shut-off valve JEM ¾"
(service valve)
8735113
JUDO solenoid shut-off valve JEM 1"
(service valve)
8735114
JUDO solenoid shut-off valve JEM 1¼"
(service valve)
8735115
JUDO solenoid shut-off valve JEM 1½"
(service valve)
8735116
JUDO sampling valve ¼” external thread
(flame-resistant, DVGW-approvedl)
8351027
Tab. 8: Accessories
Accessories are not supplied!
4.7
Function description
Disinfection with light (UV) is an effective, efficient and especially environmentally friendly process.
UV light kills pathogenic microorganisms within a few seconds without leaving any residues, harmful by-
products, odours or affecting taste. There is also no risk for employees tasked with handling hazardous
chemicals.
The effect of UV light is exploited by using especially effective UVC radiation (
λ
=254 nm). The radiation
causes an immediate photochemical reaction in the DNS (dinitrosalicylic acid), which is vital to all
microorganisms. This either kills the microorganism or destroys its reproduction capability.
The reduction rate depends on the minimum UV radiation (UV dose), in other words, the time a
microorganism is exposed to a certain level of UV radiation (W/m²).
To safely disinfect drinking water, a UV dose of 400 J/m² is required. This reduces the most important human
pathogenic bacteria, parasites and viruses by a power of 4.
The disinfection capacity of a UV disinfection system depends primarily on whether each volume element
receives the required UV dose when it flows through the radiation chamber (reactor). To ensure that this is
the case, the radiation field and hydraulics in the JUDO UV disinfection system are optimally tuned to one
another.
The UV radiation with the UV doses used for the disinfection does not result in any adverse secondary
reactions. Since UV radiation does not add any disinfecting substance to the water, there is no repository
effect after the water has passed through the chamber.
