WTR Debris Filter
Condenser, Heat Exchanger & Tower Protection
WTR Debris Filter
The WTR Debris Filter is vital for the prevention of macro-fouling from debris in cooling water circuits. Debris Filters are
used in all types of applications where macro fouling of the condenser, heat exchanger or cooling tower may occur
and protection of downstream equipment is essential. Applications include power plant cooling water (fossil & nuclear),
industrial cooling water, petro-chemical process water, irrigation systems, steel mills and numerous other plant types.
Macro-fouling (coarse debris in the flow such as carry over from traveling screens, trash, leaves, weeds, shells, marine
life - mussels, clams, crabs, etc.) can blind the condenser / exchanger or other critical equipment, thus losing cooling
flow or creating a high differential on downstream equipment. This may result in shut downs, manual removal of
debris in confined spaces, rodding out of tube sheets or other unnecessary costly and laborious cleaning methods.
The WTR Debris Filter utilizes the existing systems own pressure to self-flush when required. When debris fouls the Filter
Element, this creates a higher differential. The integrated Differential Transmitters detect this rise in differential pressure
and initiate a cleaning cycle. When the cleaning cycle is initiated, the Discharge Valve will open. Since the system line
pressure is greater than the Discharge Line pressure, a reverse pressure or vacuum is created. The Rotor Drive cycles
the Backwash Rotor over the face of the Filter Element and debris is vacuumed through the Backwash Rotor and out the
Debris Discharge line. Debris is routinely conveyed to the plant main discharge or to secondary strainers for separation.
The Debris Filter is housed in a Filter Shell, flanged to mate with the cooling water lines. Custom lengths, flanges and
arrangements are common (i.e. within an elbow, downstream of pumps, etc.). The Debris Filter utilizes an HMI touch
screen control interface, allowing for easy monitoring. Individual or multiple filters may be controlled from a common
panel. Other options such as plant DCS control is available. Controls and Drives can be supplied for hazardous locations.
Typical Debris Filter Arrangement
Filters can be:
•Vertical •Horizontal
Filter Element provides superior filtration area with minimal pressure loss across the element.
Continuous, Online, Self-Flushing without interruption to cooling or process water flows.
Filter Element apertures: 1/8” to 3/8” (3mm to 10mm).
Pipe Connection sizes: 24” to 120” (600mm to 3,000mm).
Flow Rates: 10 to 250 K GPM (0.63 to 15.7 m3/sec) depending on aperture.
Heavy wall carbon steel Filter Shell, typically internally rubber lined or epoxy coated.
Exterior coating per customer requirements.
Filter Shell of standard or customized length for new plant or retrofit into existing plant piping scheme.
Filter Element and Backwash Rotor typically of 316L SS, Duplex 2205, Super Duplex 2507, (other specialized materials
available per customer requirements).
Discharge Valve is normally a full port ball valve or knife gate with internals to match requirements.
Rotor Drive is an industrially rated heavy duty gear unit with reversing capabilities for continuous operation.
Rotor will automatically reverse if oversized debris is encountered.
Access manway for removal of unforeseen or oversized debris.
Advanced controls via HMI touch screen interface with PLC to provide instant change of various control settings (times
on/off, cycle time, etc.), viewing of component status, run times, maintenance requirements and faults.
Design codes to ASME, Nuclear or Petro-Chemical industry standards.
Optional emergency by-pass is available.
Rotor Drive
Discharge Valve
Filter Element
Debris Discharge
Backwash Rotor
Access Manway
Filter Shell
Diff. Transmitters
Additional Benefits Include:
• Extended tube life by prevention of macro-fouling
• Lower operating differential
• Minimization of flush water discharge
• External access to drive components
• No internal lubricants or contaminants in contact with flow
Debris Filter Sizing Data
Plant / Site Name
Site Location Water Source
(City, State, Country)
Once Thru or Tower
Site Conditions
Water Boxes
Number of Lines
Flow Rate per Line
Max Flow per Line
M3/sec MGD
Line Diameter (each)
Line Pressure
Clear Install Distance
Desired Aperture
Desired Internal Coating
Rubber Lined
Desired Screen / Rotor
316L SS
Duplex 2205
Super Duplex 2507
Typical Debris Expected
Type of Pre-Screen
Pre-Screen Aperture
Main Power
(i.e. bar, thru flow, dual flow or drum screen)
Special Options
Company Name
Contact Person Name
Email and Phone Number
© WTR Engineering LLC 2017
Tel: 801.713.9933
Salt Lake City, Utah, USA
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