40
- The air flow rate for air-scrubbing should be within
the range below for each element. Excessive air flow
rate may damage the membranes.
HSU-1515: 1.5 – 3.0 Nm
3
/h
(6) Open the drainage valve (V-3) to drain the chemical out from the submerged
tank completely and from the element almost completely.
(7)
Close the drainage valve (V-3).
(8) Open the rinse valve (V-11) and the CIP valve (V-10), and run the CIP pump to
feed rinse water to the submerged tank for rinse.
(9) After making sure the water level of the submerged tank is higher than the top
of the filtrate piping, stop the CIP pump and close the rinse valve (V-11) and the
CIP valve (V-10). Then open the air-scrubbing valve (V-5). After 30 seconds,
close the air-scrubbing valve (V-5).
(10) After 5 minutes, close the air drain valve (V-6) and then open the drainage
valve (V-3) to drain rinsed water out from the submerged tank completely.
(11) Close the drainage valve (V-3).
(12) Open the air drain valve (V-6) and the backwash valve (V-4), and run the
backwash pump. After purging any air out (normally a few seconds) from the
backwash line, close the air drain valve (V-6) to feed back the filtrate water
from the backwash tank to the element.
The flow rate of backwash water is set up in advance normally for 1.1 to 1.5
times filtrate water flow rate.
(13) Stop the backwash pump and close the backwash valve (V-4) when the water
level of the submerged tank reaches the top of the filtrate piping. Then open
the air-scrubbing valve (V-5). After 30 seconds, close the air-scrubbing valve
(V-5).
(14) Open the drainage valve (V-3) to drain rinsed water out from the submerged
tank completely.
(15) Repeat the process of (11) to (14) until make sure the submerged tank water
meets the required water quality.
(16) Close the drainage valve (V-3).
(17) Open the feed water valve (V-1).
(18) After making sure the water level of the submerged tank is higher than the top
!
CAUTION
!
CAUTION
Содержание HSU-1515
Страница 20: ...18 2 Configuration Rack Model R16 ...
Страница 21: ...19 Rack Model R08 ...