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3.3 Start Up and Start-up pre-checks

Once the UF membranes supplied loose along with the equipment are installed inside the 
housing that carry the membranes, the following procedures should be followed for the 
start-up of Ultrafiltration unit. Manually start the equipment during initial operation. Flush 
the  UF  unit  to  remove  the  particles,  debri  and  preservative  storage  solution  before 
operating the equipment. Target a filtrate flow of 60% of design during initial operations. 
After 24 hours, the filtrate flow can be adjusted to design conditions. Check all valves have 
been  opened  or  closed  appropriately  and  both  raw  water  and  storage  tanks  are 
connected.
Start the equipment by following the steps below:

1.  Plant power source should be powered through an Automatic Voltage Switch (AVS).
 2.  Confirm timer settings okay (Filtration 30mins /Flushing 30sec).
 3.  Connect the loose CIP/Flush tank to the inlet and clean water lines of the UF unit.
4.  Start the feed pump by switch ON the power socket.
5.  Confirm the flushing operation is draining waste water from the unit.
6.  Once flushing is complete, confirm filtration time is properly set.
 7.  Record the feed pressure and the filtrate pressure from the pressure gauges.
8.  Confirm proper operation of float valve in the Flush/CIP tank.
9.  Confirm filtrate water quality is okay.
10. Confirm dry running protection by closing and opening the raw water source.

3.4 Module Flushing

The Ultrafiltration membranes should be rinsed prior to startup to remove preservative 
fluid  shipped  in  the  UF  membranes.  Flushing  should  be  performed  until  no  foam  is 
observed in the wash water. Depending on the treatment application, additional rinsing or 
disposal of the filtrate may be required.

3.5 Shut Down

To conduct a manual shut down the power socket should be turned off. It's however 
important to perform a flushing operation before shutting down the unit especially 
where the unit will be off for extended periods of time.

If the equipment is down for more than two days, potential buildup of particulates 
and colloidal matter on the surface of the membranes is highly prevalent. High 
transmembrane pressure (TMP) indicates clogging and presence of contaminants 
on the surface of the UF membranes. 60 minutes of UF operation per day can 
protect the equipment from bacterial fouling. If the equipment is down for more than 
seven days, add a storage solution i.e. preservative (1% NaHSO3), and close all 
valves to ensure preservative is stored within the UF membrane. During the long-
term storage, pH should be checked monthly. Replace the storage solution if the pH 
is above 3. During shut down, the UF membrane should always keep moist.

Summary of Contents for BUF 4

Page 1: ...Installation Operating Manual BUF 4 Ultrafiltration Treatment Plant...

Page 2: ......

Page 3: ...2 1 Equipment Speci cation 4 2 2 Module Description 4 3 OPERATION 5 3 1 Pre Treatment 5 3 2 Filtration Flushing Process 5 3 3 Start Up Start Up Pre Checks 8 3 4 Module Flushing 8 3 5 Shutdown 8 4 1 C...

Page 4: ...treatment of groundwater with high TDS levels Standard models are suitable for low turbidity up to 15NTU raw water applications Systems are frame mounted and supplied as complete units with all neces...

Page 5: ...ut frequent operational intervention Due to the efficiency of the membranes it also offers considerable savings over conventional systems and is the ideal solution where potable water is required OPER...

Page 6: ...membrane expressed in microns BUF4 membranes have a 100K pore size Different membrane materials with the same nominal MWCO may have differing particle rejection Pore size distribution and uniformity r...

Page 7: ...nt operation including normal filtration and flushing cycle High efficiency single Dayliff feed backwash Cleaning pump saving energy i e Low CAPEX and OPEX Integrated automated backwash flushing clean...

Page 8: ...UF system which must be frequently cleaned at least once a day depending on the quality of water A variety of technologies can be used such as self cleaning screens and bag cartridge or disc filters D...

Page 9: ...ater is converted into a filtrate As contaminants are removed during the filtration mode the trans membrane pressure TMP increases difference in pressure between the feed and the filtrate line At the...

Page 10: ...lush Valve Flush CIP Tank 100LT Drain Solenoid Drain Valve FILTRATE Dayliff UF Membrane The Clean in Place CIP is performed by circulating CIP chemicals until UF membrane recovers operating flow and p...

Page 11: ...er operation of float valve in the Flush CIP tank 9 Confirm filtrate water quality is okay 10 Confirm dry running protection by closing and opening the raw water source 3 4 Module Flushing The Ultrafi...

Page 12: ...in pH The process operating parameters for the cleaning steps are provided in table below Summary of Cleaning Process Flushing Frequency Once every 20 to 60 minutes water source or pilot test reaults...

Page 13: ...he system skids just prior to start up If the UF membrane is exposed to air for an extended period of time the membrane may become dry and at risk to irreversible damage and therefore it is important...

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Page 15: ...ctrical Issues Check to ensure that there are no electrical fuses blown or breakers tripped and that all electrical connections are secure Use a voltmeter to verify that the pump motor is getting suff...

Page 16: ...embrane and examine the interconnector O rings to ensure they are in position and free of cuts and debris Defective Or Oxidized Membrane If the membrane has been exposed to certain solvents or oxidant...

Page 17: ...lity Instruments malfunction Keep instruments calibrated Cross check values with handheld devices or off line laboratory equipment Membrane Abrasion Check pre filters debris in pipes examine membrane...

Page 18: ...liability implied by law the liability of Dayliff in respect of any defect or failure of equipment supplied is limited to making good by replacement or repair at the Company s discretion defects which...

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Page 21: ...INS499A 11 22 www davisandshirtliff com...

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