Newterra O&M Manual - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

It is easy to observe aeration patterns through the clear window in the membrane tank(s).
Operator should note any unusual patterns of air distribution. The visual inspection should also
be performed before any membrane cassettes are removed from the membrane tank(s).
Operator has to check for:
damage of air diffusers - if this occurs, empty the tank and fix the diffuser;
air leakages - if this occurs, tighten up the fittings.
If there is insufficient air scouring, localized dewatering (clogging, sludging, caking and
plugging) may occur and may in turn lead to membrane fouling.
7.2 Schedule for Routine Operation and Maintenance Checkups
Location
Grease Traps TNK-101/102/103
Grease traps must be cleaned
whenever the grease film is
approx. 1 foot thick in any tank.
An unmaintained grease trap
does not stop any grease waste
from entering the WWTP system.
Perform visual check
Record permeate flow rate
Record DO in the aeration tank
PROCESS
Record pH in the aeration tank
Record vacuum pressure at the
membranes
Note: When the vacuum at the membranes reaches 0.25 bar/3.5 psig/100" WC), it may be
necessary to stop the permeation and perform recovery cleaning (please see Section 7.6.1 for
membrane fouling troubleshooting and subsection 7.3 for membrane cleaning procedures )
Inspect membranes and permeate
withdrawal system
Clean the DO sensor – DO-501
Replace DO probe every second
year in accordance with vendor
MECHANICAL
manual.
& PROCESS
Clean and calibration (as
required) PH-501
newterra O&M Manual
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Comments
Remove vac out
grease film from
top of tanks and
any food particles
from the bottom of
tanks.
Refer to Plant
Visual Checks
Normal range:
0.07 – 0.25 bar
(28" -100" WC)
1 hour
In accordance with
vendor manual in
Appendix E
In accordance with
vendor manual in
Appendix E
92