NIRE-170-1-6
7
Do not allow chemicals, toxic agents, oils or any other substances
into the MBR tank that may adversely affect the condition of the
activated sludge.
When operating in the filtration mode, avoid abrupt changes to
especially pH, temperature and suction pressure, even if these
changes are within acceptable operating guidelines.
When it is obvious that a module part is worn and potential for
failure is high, promptly replace that part with approved
replacement parts.
Never expose the
“NHP210 Series” to freezing temperatures at
any time.
When removing the “NHP210 Series” module from the activated
sludge for inspection or maintenance, take measures to keep the
membrane elements wet. Allowing the membrane elements to dry
out will adversely affect the membrane’s permeability.
The air scour should be stopped when the filtration process is
suspended. There are two exceptions:
1) Do not stop the air scour during the normal relaxation period.
2) Do not stop the air scour if the activated sludge requires air for
normal metabolic processes. However, under these conditions the
amount of air flow directed to the diffuser should be reduced to just
the amount required to maintain sludge viability.
Once a filtrate tube has been removed or disconnected from either
the element nozzle or filtrate manifold it should be replaced with a
Toray approved replacement part. Old filtrate tubes lose their
elasticity and the integrity of the seal can be compromised.
Never use a pressure washer machine when washing the
membrane module and element which can cause fatal
delamination of membrane element edge.
3. Chemical Cleaning of Element
Chemical agents used for chemical cleaning can be harmful to
one’s health. When handling chemicals, wear protective goggles,
protective gloves and other safety gear. Make sure to check the
details of its material safety data sheet (SDS) beforehand.
If chemicals should come in contact with your skin or clothes,
immediately wash the contacted area with a large volume of
running water.
If chemicals splash into your eyes, immediately flush with large
volumes of running water and contact a doctor.
WARNING
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
WARNING
!
WARNING
!
CAUTION
!
