-2-
This guide explains how to use the WATA-Plus
®
electrolyser to produce a sodium hypochlorite
solution with a 0.6% concentration of active chlorine (6 g/L) that can be used for water
treatment or disinfection purposes. The WATA-Plus
®
produces a sodium hypochlorite solution
by electrolyzing salt water. All that is needed are clear water, salt and electricity to use the
WATA-Plus
®
. Water is chlorinated by adding a dose of sodium hypochlorite to potentially
contaminated water, thereby destroying at least 99%
*
of pathogenic microorganisms in
approximately 30 minutes.
1. PRESENTATION
The WATA-Plus
®
produces 15 litres of sodium hypochlorite
solution in 4 hours, which can treat up to 60 000 litres of
water, meeting the drinking water needs of 15 000 people
(4 L/person/day).
The WATA-Plus
®
works with direct current and consumes a
nominal power of 180 W.
AC/DC power supply provided to hook up to the grid:
`
Input voltage: 90–264 VAC
`
Input frequency: 47–63 Hz
`
Input current: 2 A / 230 VAC
`
Output voltage: 12 VDC
`
Nominal output current: 29.2 A
For utilisation with solar power, a pair of DC cables with a connector is provided to allow
direct connection to a solar unit (see section 5).
W
The device should be used only by a responsible person familiar with this user guide.
W
The sodium hypochlorite solution can be corrosive and irritating when in contact
with skin, eyes, mucosa and airways, causing cough and other breathing difficulties.
In case of accidental contact, rinse with clear water.
Do not inhale or ingest.
W
Store the sodium hypochlorite solution in an opaque, clean, labelled and well-sealed
flask, out of the reach of children. Keep the flask in a cool and shady place.
W
Use the sodium hypochlorite solution within 24 hours following its production.
W
Never use metal containers for the procedure or for storage.
W
Do not use or store near fire, flames or sparks.
W
During maintenance, do never rub the titanium plates.
WATA-Plus
®
www.antenna.ch
*WHO, 2004, Water treatment and pathogen control, IWA publishing, p44-50
1. Presentation ............................................................................................................ 3
2. Necessary materials .................................................................................................. 4
3. Recommendations for the production of sodium hypochlorite ...................................... 4
4. Water quality ........................................................................................................... 6
5. Sources of electricity/energy ...................................................................................... 8
6. Procedure for producing sodium hypochlorite solution ................................................ 9
7. Storage and stabilisation ........................................................................................ 12
8. Measuring active chlorine concentration with WataTest
®
........................................... 13
9. Using sodium hypochlorite solution to chlorinate drinking water ............................... 13
10. Testing drinking water with WataBlue
®
(determination of residual chlorine) ....................................................................... 15
11. Using the sodium hypochlorite solution for disinfection/cleaning ............................. 16
INDEX
