Operation Management - Mitsubishi STERAPORE 5600 FF Series Instruction Manual

4. Carry out comprehensive water commissioning.
Feed water from the raw water tank or flow equalization tank to carry out commissioning of the
entire system and confirm its operation.
Successively change flux from 0.1 to 1.0 m
pressure after each change.
C AUT IO N
The pollution load of the hydrophilizing agent is 5 g•COD
commissioning should be returned to the equalization tank, reprocessed, discharged as
sewage water etc., according to relevant laws and local regulations.
Do not use ground water that contains large amounts of iron, manganese, calcium, silica or
similar for water commissioning, as these may clog the membrane.
Do not continue water commissioning for longer than necessary. Filtering clear water for
long periods of time may cause membrane clogging.
Once the membrane has become wet, make sure that it stays wet. If wet membranes dry
out, they almost completely lose their filtering abilities.
6-2

Operation Management

6-2-1 MBR Operation Management
This chapter describes general operation management procedures, caveats, and inspection items, etc.
for MBR systems treating municipal wastewater
*
Wastewater can refer to municipal wastewater and industrial wastewater.
MBR system operation must be managed in a manner specific to each individual facility. In addition,
system configuration differs according to whether only BOD is treated or if nitrogen and phosphate are
also removed, and maintenance to be performed etc. also differs in both cases.
As basic operation management is the same for both systems, this chapter explains the operation
management of an MBR system that uses recycled nitrification processing as an example.
Design water quality for typical municipal wastewater is given in Table 6-1. The schematic diagram for an
example system is shown in Figure 6-1(p.42).
The following are particularly important in operation management.
 An appropriate amount of air is uniformly discharged from the membrane module's diffuser.
 Trans membrane pressure is within the prescribed range.
(The timing of chemical cleaning and membrane element replacement is determined on the basis of
trans membrane pressure.)
(Treatment method: an MBR system using recycled nitrification processing)
pH (－)
BOD (mg/L)
COD
SS (mg/L)
T-N (mg/L)
T-P (mg/L)
n-Hex (mg/L)(Hexane extracts)
Coloform group number (number/mL)
STERAPORE 5600 Series (FF) Instruction Manual
Table 6-1 Example of Design Water Quality (for a septic tank)
(mg/L)
Mn
3 2
•d) and confirm and record trans membrane
/(m
/m
Cr
＊
.
Raw water
5.8 to 8.6
200
100
160
45
5
25
－
Chapter 6 Operation
2
. Water used for water
Treated
water
5.8 to 8.6
5 or less
10 or less
5 or less
10 or less
0.5 or less
3 or less
100 or less
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