II
Standard dosing plan
“Berkefeld EMERGENCY EXERCISE and ACTION (full) SDP“
1. The Berkefeld SDP is used in case of disaster abroad with unknown waters and - in
reduced extent - for exercises.
2. The EMERGENCY EXERCISE SDP is used with extremely strongly polluted,
unknown waters or in case of chemical disasters.
3. The ACTION SDP is exclusively used in case of defence.
The respective SDP is handled acc. to the time and dosing schedule.
Use of the chemicals acc. to the dosing and time schedule
Required chemicals for the TWA 6 raw water pretreatment per 8 m
3
tank
1.
HTH chlorine: Dissolve 800 g (100 g/m
3
) in 10 litres of water and fill it with the first
raw water into the tank. Filling time + 10 min reaction time
1.2 After reaction time, add 800 g (100 g/m
3
) ferric chloride, dissolved in a bucket,
evenly distributed into the tank. (Pay attention to the carbonate hardness!) Reaction
time 15 min
2.
In the meantime assemble the other tanks, start filling and addition of chemicals as
described under 1.
3.
After reaction time, add 1600 g (200 g/m
3
) activated carbon, mix in two buckets and
add in two steps with continuous intensive stirring. Reaction time 20 min
4.
After reaction time, adjust pH-value. When required, add about 400 g (50g/m
3
)
calcium hydroxide, dissolved in a bucket, add into the tank evenly distributed.
Sedimentation approx. 30 min
5.
Measuring of pH-value and chlorine content
Required values:
pH-value between 7.0 and 7.5
Chlorine below 1.0 mg/l
Time required in total: filling time + 90 min
After this time the discharge from the first raw water tank via the precoat filter is
possible.
Hinweis für den Benutzer dieser Datei:
Einheitsdosierplan unter
O
allgemei
bedienun
TWA 6 alt, englisch
Zusatzinfos
bfedp.xls
einheften.