Oil/Water Separators

Oil/Water Separators
®
Featuring the Corella Coalescer
Highland Tank
®
Oil/Water
Separators
Highland Tank is the leader in the steel tank industry
and has been building oil/water separators for
decades. Years of experience enable Highland
Tank to provide solutions to the most challenging
wastewater treatment needs. Our team of
design, engineering, fabrication and service
professionals bring years of experience and
knowledge from other steel tank fields to
this market. These innovative techniques
improve the overall quality and life of the
vessel while simplifying installation and
everyday use. Our custom-build
capability sets Highland Tank
apart from the competition.
Oil/Water Separators In Action
Exceeding Large Stormwater Treatment System Needs
Highland Tank provides the strongest and most reliable
oil/water separators in the industry.
Our separators are designed to remove oil, grease, light
petroleum products and oily-coated solids from a variety
of wastewater discharges.
The effluent from oil/water separators is typically discharged
to either a storm sewer or a sanitary sewer system.
Since 1986, Highland Tank’s Oil/Water Separators have set
the standard for reliability. Our parallel plate separators are
highly-efficient — treating wastewater under a wide range
of conditions. Unlike other oil/water separators, they are
easy to install, operate and maintain.
A wide range of industrial applications require high-efficiency
oil/water separators. Some examples include:
• Airports & Aircraft Services
• Electric Utilities & Power Plants
• Environmental Remediation
• Industrial Facilities
• Military & Government Installations
• Municipalities
• Petroleum Production & Marketing Facilities
• Railroad Yards
• Transportation Companies
They are also located in many vehicle service areas
associated with fueling, repair and maintenance
shops and wash areas.
Environment Canada (EC) is a diverse
organization with programs, services, and
people leading the way in implementing
Canada’s environmental agenda.
The Canadian Environmental Protection
Act and Pollution Prevention programs
require “the use of processes, practices,
materials, products, substances or forms
of energy that avoid or minimize the
creation of pollutants and waste, and
reduce the overall risk to the environment
or human health.”
Canadian stormwater discharge regulations
are very similar to those in the United
States. Environmental rules impact a
multitude of business sectors such as
mines, manufacturing plants, refineries,
transportation systems, and many
others with potential to create and
discharge wastewater associated
with industrial processes.
The expansion of operations at a large
metal manufacturing facility in the
Province of Quebec was completed in
compliance with EC rules through the use
of high-performance oil/water separators.
Due to the proximity of the plant to
a sensitive waterway, the design
engineering team specified multiple
Highland Tank oil/water separators to
help the facility satisfy the strict effluent
discharge regulations.
The project resulted in significant
upgrades to the storm water collection
system and the installation of five
Highland Tank Model HTC-60,000 gallon
oil/water separators, designed for the
treatment of contaminated stormwater
runoff. Each separator is rated for 0-6,000
GPM flow rate and discharge with an
average effluent quality well within the
environmental limits.
Heavy-duty steel construction using ¼”
thick mild-carbon steel in strict accordance
with Highland Tank’s HighGuard Corrosion
Control System was employed, and each
separator was fitted with Highland Tank’s
exclusive EZ Access manway design.
This fast-track project - including
design specifications, review, approval,
fabrication and delivery - was completed
within one year, demonstrating Highland
Tank’s commitment and dedication to
providing outstanding customer service.
The double-wall separators measured
13’ in diameter; 60’ 6” long and weighed
nearly 95,000 lbs each. All five HTC-60,000
oil/water separators were delivered in
three stages over the course of 30 days
to accommodate installation requirements
on site.
®
®
Corella Technology
The Corella Coalescer
The Corella® Coalescer is a removable, inclined parallel,
flat/corrugated plate coalescer that enhances separation of
both oil and solids from all strata of the wastewater stream.
It is individually engineered to specific application
and job-site requirements to maximize utility.
Features, Advantages & Benefits
®
Corella inclined parallel plate coalescers combine the features
of flat and corrugated plate coalescers into a dual-function
design that performs better than traditional plate coalescers.
Plate clogging is the primary reason for separator failure. Corella’s®
multi-purpose plates greatly reduce the accumulation of settleable
solids in the plate pack and minimize separator shutdown and
maintenance by simultaneously separating free oil droplets and
settleable or suspended solids from water.
Corella® plates are assembled and arranged to allow settleable
solids to accumulate on the flat top of the plates and slide
downward, while the oil coalesces into sheets on the corrugated
undersides and flows upward. Unlike other oil/water separators,
both oil and solids are removed, minimizing shutdowns for
periodic cleaning.
With Highland Tank’s EZ Access manways, inspection of the
Corella® takes less effort, eliminating dangerous confined space
entry requirements. Access from above permits separator
pump-out and cleaning using a high-pressure washer without
removing the coalescer pack. Hazardous materials are not
discharged at grade during the cleaning process.
• Permits separation of mixtures
containing both oil and settleable
solids, minimizing coalescer clogging
• Normal operating temperatures
from 40º to 120º F with higher
operating temperature units available
• Corella® plate packs consist
of multiple cartridges to allow
for easy removal
• Corella® plates are manufactured of
oleophilic material
• Handles a wide range of oils,
specific gravities and suspended
particle concentrations
• Custom packs are available for
higher flow rates, temperatures
and solids loading
• Increases oil/water separation
efficiency - reduces clogging
Corella® and Petro-Screen coalescers
are removable from above
Large rectangular manways,
with removable, lightweight
top panels for easy access
and maintenance
Fluid level cannot rise into
manways for total secondary
containment
Patented internal baffles and coalescers
accelerate the separation process for
unparalled performance down to
10 ppm free oil
Effective wastewater
treatment at varying flow
rates and concentrations
Inlet and outlet through separator
heads for shallower burial depths
The non-traditional Corella® plate pack is available with variable
length, angle and spacing, tailored to your specific separator duty.
They can be configured to meet a wide variety of capacities and
conditions and can be integrated with many other unit operations
to provide a total solution to a water treatment problem.
Rugged steel construction
for greater structural strength,
superior product compatibility,
and unsurpassed
corrosion resistance
Double-wall construction available
with interstitial leak monitoring
Solids slide off
flat plate tops
and settle in
collection area
Oil coalesces into sheets
on the corrugated undersides
and flows upward
OWS in Operation
The stationary wastewater treatment
tank begins service completely filled with
water with engineered internal baffles and
coalescers fixed and ready to enhance the
oil/water separation process.
Our separators are designed to allow
convenient access for inspection and
maintenance. The EZ Access Manways
permit unconfined access to the internal
workings of the separator.
Flow is directed from the inlet pipe
against the diffusion baffle to reduce
turbulence and distribute flow evenly.
Sediment and heavy solids settle out
while concentrated oil begins to rise
to the surface. The oily water then
enters the Corella® Coalescer where
oil/water separation is enhanced by
the inclined pack of flat/corrugated
Corella® plates.
The corrugated underside causes oil
to coalesce into sheets, making the oil
globules rise to the surface quicker.
Remaining solids drop onto the plate
tops then slide off into the collection area.
The effluent continues to flow toward
the outlet and is only discharged by
gravity displacement.
Complete Custom Systems
Highland Tank has many accessory
components available to complete
your wastewater treatment system.
Electronic monitoring is available to
sense for oil levels. Sensors can turn oil
removal pumps on and off automatically.
Alarm / Control Panel
An adequate anchoring system is
essential for maintaining the separator’s
stationary position. Our Deadmen
Anchoring System provides concrete
anchors and polyester hold-down
straps designed specifically for each
of our separator models.
Double-wall separators can be monitored
with electronic leak detection sensors
installed in the interstitial space to detect
an unlikely leak. Electronic monitoring
systems can be supplied with audible
and visual alarms.
Outlet Vent Piping**
Grade Level
Manways & Covers*
Interface &
Level Sensor Pipe
Monitoring Pipe
Flanged Manways
& Covers
Flanged Outlet Piping
Manway Vent
Piping**
OUTLET
Isolation Spool Piece
(where required)
Sediment Chamber
Outlet
Downcomer
Oil Pump-Out Pipe
Underflow Baffle
Water
Outflow
Inlet Vent Piping**
Concrete Top Pad**
Isolation Spool Piece
(where required)
Tank Interstice &
Leak Detection Sensor
Flanged Inlet Piping
Highland Deadmen Anchors
or Hold-Down Pad**
Oil/Water Interface
Before being discharged, the effluent
must pass through the second coalescer.
Highland Tank’s Petro-Screen
polypropylene impingement coalescer is
an encased bundle of layered oil-attracting
fibers used to intercept droplets of oil
that are too minute to be removed by
the Corella® Coalescer.
Interface &
Level Sensor*
INLET
Sludge Baffle
Petro-Screen
Coalescer
The Petro-Screen effectively removes oil
droplets down to 20 microns in diameter
achieving the UL-SU2215, 10 PPM
effluent rating.
Pea Gravel or other
approved backfill material
Velocity Head
Diffusion Baffle
& Wear Plate
Corella®
Parallel / Corrugated
Plate Coalescer
Model HTC Oil/Water Separator
with EZ Access option shown.
*Optional equipment available from Highland Tank
**Installer supplied equipment
OWS for Remediation
Rectangular Oil/Water Separators
Innovation, Quality and Economy
Rectangular separator design permits total, unconfined,
unrestricted OSHA-compliant top access for safe visual
inspection, cleaning and maintenance.
Florida is experiencing an increase in
population growth throughout the entire
state. To meet new demands and provide
a reliable, sustained supply of quality
water, a well-managed and ample water
resource is essential.
To provide this fundamental, often
taken- for-granted service, research
and understanding of the hydrologic
conditions of the new areas being
developed is paramount.
Easy to Install,
Operate & Maintain
Rectangular oil/water separators are typically
installed aboveground to help industrial facilities
comply with the EPA's spill and discharge regulations.
Like our underground cylindrical units, these separators
are equipped with our patented-design Corella® coalescers that
accelerate the separation process and greatly reduce the level of oil
and oily-coated solids discharged into a municipal storm or sanitary sewer.
Industrial, commercial and residential
development can place a stranglehold
on inadequate water supplies. Realizing
the need for a better understanding of
water resources by the general public,
Florida has worked with the U.S.
Geological Survey to identify potential
problems and address concerns.
When a northern Florida electric utility
acquired some additional property for
expansion, concerns for water quality
now and into the future had to be
considered. However, there was an
environmental situation that needed
to be addressed immediately.
The expansion project area was once
the home to a railroad tie manufacturing
plant. The process for making railroad
ties includes treating wooden timbers
with Creosote, a bi-product from
burning coal, oil or wood.
Over many years of tie production, the
Creosote leached into the ground,
contaminated the groundwater and
threatened the area’s entire water system.
Highland Tank was chosen to supply
the right device for the groundwater
remediation project.
An aboveground model R-HTC-2000
rectangular separator was installed to
process and clean groundwater prior
to release back into the water system.
The uniquely engineered separator has
an integral oil skimming device to remove
separated oils on a continuous basis.
In addition, an integrated sludge hopper
provides additional space for solids to
be collected and then removed with
minimal disruption to the system. Visual
and electronic level indicators monitor
levels in the separator to help with
routine maintenance.
Highland Tank also provided a vertical
storage tank for process water to be
stored prior to the final filtration
treatment and ultimate release
back into the environment.
Separator Sizing Guide
Cylindrical OWS
Rectangular OWS
4" Diameter Oil Pump-Out Pipe
2" Diameter Interface & Level Sensor Pipe
Flanged Manway & Cover with Gauge Port
Removable Top Cover with Lifting Handles
Velocity Head
Diffusion Baffle
Length
Lifting Lug
Width
Vent Fitting
Flanged
Inlet Pipe
INLET
Lifting Lug
Height
INLET
Wear Plate
Underflow
Baffle
Sludge
Baffle
Velocity
Head
Diffusion
Baffle
OUTLET
Petro Screen
Coalescer
Striker
Plate
OUTLET
Flanged
Outlet Pipe
Corella® Parallel
Plate Coalescer
Optional
Sludge Hopper
Length
Corella® Parallel
Plate Coalescer
Petro Screen
Coalescer
Oil Dam
Adjustable Effluent
Transfer Pipes
Optional
Support Legs
Diameter
Gravity Discharge Option Shown
Model
HT or HTC
Flow
Rate
Gal/Min
35
55
100
200
300
400
500
600
700
800
900
1,000
1,200
1,500
2,000
2,500
3,000
4,000
5,000
6,000
350
550
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
12,000
15,000
20,000
25,000
30,000
40,000
50,000
60,000
Total
Volume
Gallons
350
550
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
12,000
15,000
20,000
25,000
30,000
40,000
50,000
60,000
Recommended
Dimensions
Oil Pump-out
Gallons
Diameter
Length
70
110
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
2,400
3,000
4,000
5,000
6,000
8,000
10,000
12,000
3'-6"
3'-6"
4'-0"
5'-4"
5'-4" 5'-4"
6'-0"
6'-0"
7'-0"
7'-0"
8'-0"
8'-0"
8'-0"
10'-0"
10'-6"
10'-6"
10'-6"
12'-0"
12'-0"
13'-0"
Plate spacing and orientation may vary depending on site conditions. Custom sizing is available.
Consult Highland Tank for Series G & J sizing information.
6'-0"
7'-9"
10'-9"
12'-0"
18'-0"
24'-0"
23'-10"
28'-8"
24'-4"
28'-0"
24'-0"
26'-8"
32'-0"
25'-6"
31'-0"
38'-9"
46'-6"
47'-3"
59'-6"
60'-6"
Inlet &
Outlet
Diameter
4"
4"
6"
6"
8"
8"
8"
10"
10"
10"
12"
12"
12"
14"
16"
18"
20"
24"
24"
24"
Model
R-HT or R-HTC
100
200
300
600
900
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
12,000
15,000
20,000
25,000
30,000
Flow
Rate
Gal/Min
Total
Volume
Gallons
5
10
25
50
75
100
200
300
400
500
600
700
800
900
1,000
1,200
1,500
2,000
2,500
3,000
100
200
300
600
900
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
12,000
15,000
20,000
25,000
30,000
Recommended
Tank Dimensions
Oil Pump-out
Gallons
L x W x H
20
40
60
120
180
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
2,400
3,000
4,000
5,000
6,000
5'-0" x 1'-6" x 3'-0"
5'-0" x 2'-0" x 3'-0"
7'-0" x 2'-0" x 3'-0"
9'-0" x 3'-0" x 3'-0"
10'-0" x 3'-0" x 4'-0"
11'-0" x 4'-0" x 4'-0"
12'-0" x 5'-0" x 5'-0"
18'-0" x 5'-0" x 5'-0"
18'-0" x 6'-0" x 5'-0"
20'-0" x 6'-0" x 6'-0"
19'-2" x 7'-0" x 6'-0"
19'-2" x 7'-0" x 7'-0"
19'-2" x 8'-0" x 7'-0"
18'-10" x 8'-0" x 8'-0"
20'-11" x 8'-0" x 8'-0"
19'-10" x 9'-0" x 9'-0"
24'-9" x 9'-0" x 9'-0"
29'-9" x 10'-0" x 9'-0"
33'-6" x 10'-0" x 10'-0"
40'-10" x 10'-0" x 10'-0"
Plate spacing and orientation may vary depending on site conditions. Custom sizing is available.
Consult Highland Tank for Series G, J, S & TF sizing information.
Inlet &
Outlet
Diameter
1"
2"
3"
4"
6"
6"
8"
10"
10"
10"
10"
10"
10"
12"
12"
12"
14"
16"
18"
20"
Engineered Design Options
Product Dependability for Vehicle Maintenance
In addition to our extensive line of standard model separators, we also offer several engineered designs to accomodate
site-specific needs and applications. Each of these special models incorporates a unique feature to process wastewater
and provide an extra, special operation.
G-Series separators include an integral
sand/grit interceptor compartment ahead
of the primary separation chamber to
capture and retain larger, heavier
solids on the bottom of this chamber.
Removing these particles early in the
process reduces potential clogging and
improves the separation process.
Our J-Series separators include an
effluent pump-out chamber with
submerged pumps and level controls
for applications where gravity flow out
is not available. Effluent can be pumped
to drains or to another additional treatment
such as Highland’s Advanced
Hydrocarbon Filtration System.
Some applications require the separated
oils to be removed from the separator on
a continuous basis. For these situations,
Highland Tank offers the S-Series units
with an integral side oil compartment. Oils
are skimmed from the water’s surface into
a separate chamber for automatic or
manual removal.
Integral Sand Interceptor Compartment
Pumped Discharge
Pump
Controls
and
Rails
Bulkhead
Oil Skimmer
Effluent
Discharge
Pump
Side Oil Storage Compartment
Oil Pump-out Pipe
Diffusion Pipe
To filter and treat the effluent even further,
Highland Tank offers the TF-Series model
separator that employs specially packaged
filters that process and polish the effluent
as it trickles through the filter media before
being discharged via gravity flow from
the separator.
Trickle Filter Media
Long term reliability and service is the
goal of every company that provides
products that serve to protect our
environment. Since 1996, Highland
Tank has supplied one of the world’s
largest truck fleets with a variety of
oil/water separators to help them
protect and grow their business.
The trucking company currently
operates and services about 160,000
vehicles from maintenance facilities all
over North America. They utilize the
oil/water separators to treat oily
wastewater generated by normal
operations in their vehicle maintenance
garages and truck wash facilities.
In the first year of our long-term
partnership, we delivered a 1,000
gallon 100 GPM underground oil/water
separator for a truck service and
maintenance center. Since then,
we have provided over 125 units in
various sizes, flow rates and designs
to accommodate the specific needs
of a particular site.
Highland Tank’s variety of engineered
designs helps them protect the
environment and meet regulations
at a multitude of locations with
unique site-specific needs.
Most recently, we delivered a 2,000
gallon underground double-wall
model HTC separator to Santa Fe
Springs, CA. This unit is capable of
processing wastewater at flow rates
up to 200 GPM.
Our nearly 20 years of association and
continuous supply of oil/water separators
for the company’s maintenance facilities
demonstrates their trust in Highland Tank.
In addition, their confidence in our
products to provide dependable service
has been proven over and over again
by their continued installations at
service centers.
Complete Systems
Solutions
Highland Tank's systems approach for
providing wastewater treatment solutions
goes well beyond simply supplying an
oil/water separator. Our ability to custom
fabricate separators for both underground
and aboveground applications and supply
them with all of the additional components
needed through start-up is unparalled in
the industry.
Concrete Deadmen Anchors
Alarm & Control Panels
Polyester Hold Down Straps
Pump Systems
Our accessory line is designed to augment
the wide selection of wastewater
treatment systems we manufacture
making it quick and easy to efficiently
turn any of our separators or interceptors
into a complete operating system.
All components arrive at the job site
ready to install, reducing or eliminating
construction delays. Our extensive line
of systems components include:
•Monitoring sensors for leak detection
and level sensing
•Alarm and control panels
•Complete anchoring systems
•Grade level manways
•Pumps for influent and effluent
•Insulation systems and heaters
•Access ladders, stairs, platforms
and walkways
The knowledgeable and helpful staff at
Highland Tank is readily available to help
take your next project from concept
through construction and into service.
Grade Level Manways
Thermal Insulation
Access Components
Monitoring Sensors
Stoystown, PA
Watervliet, NY
Lebanon, PA
One Highland Road
Stoystown, PA 15563
814-893-5701
958 19th Street
Watervliet, NY 12189
518-273-0801
2225 Chestnut Street
Lebanon, PA 17042
717-664-0602
Manheim, PA
Greensboro, NC
Friedens, PA
4535 Elizabethtown Road
Manheim, PA 17545
717-664-0600
2700 Patterson Street
Greensboro, NC 27407
336-218-0801
1510 Stoystown Road
Friedens, PA 15541
814-443-6800
Proudly made in America
© Highland Tank – HT – 2020 – 7/2014
Web: www.highlandtank.com
Email: [email protected]