DVZ Biomaster PLUS Series, Финальная документация

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Issue: 16.08.2010 Instruction Manual DVZ-SKA “BIOMASTER“-PLUS Page 21 of 39
2. Take a water sample from the drain cock. Flush the drain cock before taking the
sample. The water should be odorless. If the water sample is odorless, the bacteria
have sufficient air, some "earth like", or carbondioxide odor is normal.
3. If the water sample is grey to black in colour and/or smells like rotten eggs (hydrogen
sulfide), open the inspection hatch. Each Air Lift should be pumping vigorously and
the water surface should be turbulent, indicating flow to all parts of the Treatment Tank.
4. If not, turn off blower, check silencer and inlet filter for blockage. Clean out or replace
element. Try airlift again. If no good result, continue at 5.
5. Turn the blower off. Centrifugal blower: check acc. enclosed manufacturers
documentation. (quick check: blower should generate at least 2 m.w.c. against closed
valve. Do
NOT run for longer period against closed valve!)
6. Check if vent outlet is properly located and relocated if necessary to a less sensitive
area.
7. If the Air Lift is not operating and air is bubbling through the Bioreactor absolutely
sure the Air Lift valve is open. If they are properly set, the air header or the individual
piping leading from the air header to the Air Lifts may be damaged or disconnected.
Check and repair.
9. If you are absolutely certain that the air piping is defective, shut the system down as
per Section „SHORT TERM LAY UP“, then remove the inspection hatches and
physically inspect the air header, hoses and internal connections and repair as
necessary.
After taking appropriate measures, the odor in water clears up after 24 hours, and effluent
should be clear within 48 hours again.
9.3 ODOR IN SPACE WHICH UNIT IS LOCATED
1. Make sure ventilation air inlets are not picking up discharge from Treatment Tank
vent. If so, relocate vent termination.
2. With soapy water, check all flanges and penetrations above the Treatment Tanks
water level for leaks.
3. Check the wet well vent. If it smells like rotten eggs, or the water in the Contact tank
sight glass is grey, refer to Section „ODOR FROM MEDIA TANK VENT“.
4. If air is being forced out of the Disinfecting tank vent (regardless of the nature of the
odor) there is excessive back pressure in the Treatment Tanks which is blowing out
the Spillover water seal and allowing the Treatment Tank to vent into the space