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Up-Flo

®

 Filter Operation and Maintenance Manual

Hydro International

 (Stormwater), 94 Hutchins Drive, Portland ME 04102

Tel: (207) 756-6200 Fax: (207) 756-6212 Web: www.hydro-int.com

Operation

Introduction

The Up-Flo

®

  Filter  operates  on  simple  fluid  hydraulics.    It  is  self-

activating, has no moving parts, no external power requirements and 

is fabricated with durable non-corrosive components.  Personnel 

are not required to operate the unit and maintenance is limited to 

periodic inspections, sediment and floatables removal, Media Pack 

replacement and Drain Down Filter replacement.  

Pollutant Capture

The Up-Flo

®

 Filter is designed to operate as a “treatment train” by 

incorporating multiple treatment technologies into a single device.  

Trash and gross debris are removed by sedimentation and screening 

before they are introduced to the filtration media, preventing surface 
blinding of the filter media.  The Up-Flo

®

 Filter is a wet-sump device.  

Between  storm  events,  oil  and  floatables  are  stored  on  the  water 

surface separate from the sediment storage volume in the sump (see 

Fig.2).  The high-capacity bypass siphon acts as a floatables baffle to 
prevent washout of captured floatable pollutants during high intensity 

events. 

Reduced Clogging

The Up-Flo

®

 Filter has been designed to minimize the occurrence 

of clogging and blinding. The Up-Flo

®

 Filter employs a unique Drain 

Fig.2 Pollutants captured in the Up-Flo

®

 Filter.

Outlet 

Module 

with 

Bypass 

Hood

Filter 

Module

Floating 

Debris

Settled

Solids

Drain 
Down
Filter

Angled 
Screen

Page | 4

Down Filter that allows the water level in the chamber to drop below the filter media between events.  The Drain Down Filter mechanism 
creates a reverse flow that flushes captured pollutants off the surface of the Media Bag, helping to prevent blinding.  By allowing the water 

to drain out, the Drain Down Filter also reduces the weight of the Media Bags.  This makes the bags easier and safer to remove during 

maintenance operations.  

Overflow Protection

The Angled Screens are designed to prevent ragging and blinding.  The Angled Screens are situated below the Filter Modules, sheltering 

them from the direct path of the influent.  Coarse debris settles in the sump before the runoff flows up through the screens, protecting 
them from blinding.  In the unlikely event of a blockage, the high capacity siphonic Bypass Hood is designed to convey high enough flow 
to minimize the risk of large storm creating upstream flooding.

Good Housekeeping & Best Practices

Good housekeeping practices upstream of the Up-Flo

®

 Filter can significantly extend Media Bag life.  For example, sweeping paved 

surfaces, collecting leaves and grass trimmings, and protecting bare ground from erosion will reduce loading to the system.  Media Packs 

should not be installed in the Filter Modules until construction activities are complete and site stabilization is effective.

Damage Due to Lack of Maintenance

 

Delayed maintenance would result in clogged Media Bags and/or blinded Angled Screens.  In that situation, the Up-Flo

®

 Filter would go 

into bypass and there would be no treatment of the incoming stormwater.  Because the Bypass Weir can easily convey all of the flow to 

the Outlet Module, there would be no lasting damage to the system.  Replacement of the Media Bags and removal of sediment from the 

sump would restore the Up-Flo

®

 Filter to its original treatment efficiency.  Establishing and adhering to a regular maintenance schedule 

ensures optimal performance of the system.

Summary of Contents for Up-Flo

Page 1: ...Operation and Maintenance Manual Up Flo Filter Filtration System for Stormwater Treatment Stormwater Solutions Turning Water Around ...

Page 2: ...lc owns the copyright of this document including any drawings or graphics which is supplied in confidence It must not be used for any purpose other than that for which it is supplied and must not be reproduced in whole or in part stored in a retrieval system or transmitted in any form or by any means without prior permission in writing from Hydro International plc Up Flo Filter is a trademarked fi...

Page 3: ... maintenance requirements that will ensure the filter will continue to operate and perform as intended In general a minimum of two inspections are required per year to monitor sediment and gross pollutant accumulations In order to achieve an annual TSS removal rate of 80 for the Up Flo Filter the minimum maintenance frequency specified in the maintenance section for replacement of the Media Pack a...

Page 4: ... Down Filter mechanism creates a reverse flow that flushes captured pollutants off the surface of the Media Bag helping to prevent blinding By allowing the water to drain out the Drain Down Filter also reduces the weight of the Media Bags This makes the bags easier and safer to remove during maintenance operations Overflow Protection The Angled Screens are designed to prevent ragging and blinding ...

Page 5: ...o all of the components see Fig 3 Completion of all the maintenance activities for a typical manhole Up Flo Filter takes less than one hour In the case of inspection and floatables removal a vactor truck is not required Otherwise a vactor truck is normally required for oil removal removal of sediment from the sump and replacement of the Media Packs and Drain Down Filter In most cases entry into th...

Page 6: ... amount of accumulated sediment will be accomplished by removing both of the Media Bags from one of the Media Packs and weighing the bags separately Since a new Media Bag weighs approximately 30 lbs 14 kg wet the difference in weight will approximately equal the weight of solids that have accumulated in the bag A spent Media Bag weighs approximately 50 lbs 23 kg wet Measurement of oil layer on wat...

Page 7: ...cleaning the sump Monitoring the Drain Down Filter for clogging monitoring the Flow Distribution Media and Angled Screens for slime and debris and monitoring the accumulation of floatables will provide an estimate of how long the Up Flo Filter can operate before its performance can become impaired by one of these factors Routine Inspection and Maintenance After completion of the first year of oper...

Page 8: ...l indicator has been activated Make note of any irregu larities See Fig 6 for a typical Inspection View 4 Without entering the vessel use the pole with the skimmer net to remove floatables and loose debris from the chamber 5 Using a sediment probe such as a Sludge Judge measure the depth of sediment that has collected in the sump of the vessel Maximum sediment depth is 16 inches 41 cm 6 If the hig...

Page 9: ...nhole installation takes less than one hour Approxi mately 360 gallons of water and up to 0 6 yd3 0 5 m3 of sediment may be removed in the process In an installation equipped with six Filter Modules 12 Media Bags 2 bags per module would be removed and replaced Assuming a spent Media Bag weight of 50 lbs 23 kg up to 600 lbs 272 kg of spent Media Bags would be removed All consumables including Media...

Page 10: ... oils and gross debris removed and the depth of sedi ment measured Note any apparent irregularities such as damaged components or blockages 10 Securely replace the grate or lid Remove safety equip ment 11 Dispose of sediment and gross debris following local regula tions 12 Dispose of oil and sump water at a licensed water treatment facility or following local regulations 13 Contact Hydro Internati...

Page 11: ...hes on the front and sides of the module Remove the lid 1 to gain access to the Media Pack Fig 9 4 Remove and discard the spent Media Pack The Media Pack contents include A top layer of green 2 Flow Distributing Media Two 2 Media Bags 3 equipped with nylon handles A bottom layer of green 2 Flow Distributing Media 5 Insert a new Media Pack supplied by Hydro International First insert a bottom layer...

Page 12: ... depending on the Up Flo Filter Configuration The maximum allowable sediment depth in any Up Flo Filter configuration is 16 inches 41 cm Following a contaminated spill in the drainage area Media Pack Replacement Once per year Replacement is required anytime inspection reveals that the high water level indicator has been activated after two consecutive storms and the subsequent weighing of the Medi...

Page 13: ...cation Owner site Contractor Contact Name Contact Name Company Name Company Name Address Address Telephone Telephone Fax Fax Installation Date Configuration circle one manhole vAULT SYSTEM Total number of uP fLO fILTER Modules _________________ Hydro International Stormwater 94 Hutchins Drive Portland ME 04102 Tel 207 756 6200 Fax 207 756 6212 Web www hydro int com ...

Page 14: ...uctural Components Any evidence of structural deterioration A Grates in good condition A Spalling or cracking of structural parts A Outlet Overflow Spillway A Other Noticeable odors A Any evidence of filter s clogging M Evidence of flow bypassing facility A Site Name ____________________________________________________________ Owner Change since last inspection Y N Location _______________________...

Page 15: ...___________________________________________ Overall Condition of Up Flo Filter Acceptable Unacceptable Acceptable would mean properly functioning unacceptable would mean damaged or required further maintenance If any of the above Inspection Items are checked Yes for Maintenance Needed list Maintenance actions and their completion dates below or on the Maintenance Log provided on page 15 of the Up ...

Page 16: ...imated volume of oil floatable trash removed ____________________________________________________________________ Sediment depth measured in sump prior to removal _________________________________________________________________ Number of Filter Modules fitted with new media packs _______________________________________________________________ Inspector Comments ___________________________________...

Page 17: ... for Stormwater BMP Maintenance Providers Hydro International Certification Program become a Hydro International Preferred Stormwater BMP Maintenance Partner Become a Hydro International certified Stormwater BMP maintenance provider today Learn more at http www hydro int com us products service parts Stormwater Solutions 94 Hutchins Drive Portland ME 04102 Tel 207 756 6200 Fax 207 756 6212 stormwa...

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