June 24, 2021

CF-CP Media (Cross-Flow/Corrugated Plate) Oil Water Separator Media
Introduced a new coalescing media with a corrugated, cross-flow design.

In many washing applications, huge volumes of solids are generated during the washing process. This is especially true in the construction and mining industries. Some of the heavier solids drop out of suspension quickly while others get entrained in the oily wastewater.

To insure our oil water separators do not clog in these high solids washing applications, we have developed a new corrugated plate coalescing media with a cross-flow design.

This new media design is a series of plates curved in a simple wave shape. As the water enters the separator, the flow is directed evenly across the surface of the media plates. The solids are captured and fall to the trough area of the corrugated plates below and the oils rise and stick to the trough area of the plates above.

The separator design maintains laminar flow throughout the media so the oil and solids do not remix. Separated oil flows upwards along the plates to the top of the separator where it can be removed and solids slide down the smooth corrugated plates to the hopper area where they can be easily removed.

  • Available in stainless steel, PVC, HPVC and polypropylene
  • Plate spacing of ½”, ¾” or 1 ¼” depending on application
  • Supplied in blocks for easy installation and removal

By coupling high efficiency separation with easy maintenance of this new media, you will ensure your oil water separator operates at peak performance in high solids applications.

Give us a call at 800-453- 8639 for more information!

CF-CP Media (Cross-Flow/Corrugated Plate) Oil Water Separator Media
Site View of our new coalescing media with a corrugated, cross-flow design.

June 15, 2021

In some applications, a higher efficiency media is required for environmental concerns. This media uses its high surface to volume ratio to provide extremely efficient oil/ water/ solids separation.

This media is constructed of oleophilic coalescing plates arranged in a cross-fluted configura­tion that provides between 31–69 square feet of oil coalesc­ing surface and 7–17 square feet of solids settling area per cubic foot of media. Each plate has a series of angled ribs, which are sloped from the bottom of the separa­tion chamber to the top at a 60° angle establishing a com­pound inclined surface.

  • Available in stainless steel, PVC, HPVC, polypropylene and stainless steel
  • Vertical slant rib plate spacing of ½”, ¾” or 1 ¼” with slant ribs alternating direction by 90°
  • Supplied in 1’ cubes with optional stainless steel frames for easy installation and removal

The separator and media design maintains a sinusoidal laminar flow throughout the media so the maximum amount of oil separation is achieved. Coalesced oil can flow unimpeded along the plate surfaces to the top of the separator where it is easily removed.

Give us a call at 800-453- 8639 for more information!

June 10, 2021

Our standard media has vastly superior properties compared to the traditional media used in oil-water separators. These properties result in a more efficient and effective separation than that attained by traditional coalescing media.

  • A larger amount of surface area per cubic foot of media allows for greater oil drop coalescence. This media has 132 ft2/ft3 surface area for oil droplets to contact. Other typical coalescing media have about 48 ft2/ft3 to 68 ft2/ft3.
  • A more efficient first step separation reduces the need for a second polishing step. Our media removes 99.9% of oil droplets 20 microns in size and larger. This meets EPA Method 1664 Revision A and European Standard EN 858-1.
  • An open design eliminates trapping of particles and subsequent clogging of water channels. Oil water separators with this media require fewer maintenance shut-downs and separates oil and water faster.
  • Where higher-than-normal operating temperatures are required, our media outperforms its competitors. It works effectively in temperatures up to 212°F, versus a maximum temperature of about 120°F for competing media.

Give us a call at 800-453- 8639 for more information!

January 25, 2021

Even though the terms “Oil Interceptors” and “Oil Water Separators” are often used
interchangeably, they are very different systems.


Oil interceptors
Oil interceptors are designed for use in drain lines where oils, sediment and other liquids are intercepted.

Oil interceptors are typically used in low flow drain lines where small quantities of oils, sediment
and other liquid contaminants can be “intercepted”. These drain lines may come from variety of
facilities including covered parking garages, machine shops, service stations, and manufacturing

Usually constructed of steel, fiberglass or plastic, interceptors are simple systems which include a
baffle plate, a solids bucket, and a separation area. As the water enters the interceptor, a baffle
plate reduces the flow and turbulence of the incoming water which helps to drop out some solids
and sludge.

A low flow rate and little turbulence permits the oils and other light density to slowly separate from
the water and rise to the top of the separation area. From there, relatively oil-free water is
discharged to the sewer.

Oil Water Separators

In comparison, Oil Water Separators have a far more sophisticated and efficient design. They are used in higher volume applications such as industrial wash operations, parking lots, re-fueling facilities and military installations where there is a potential for a much higher volume of water, oil, and contaminants.

The standard oil water separator is a steel or stainless steel tank containing an inlet compartment, baffles system, sludge chamber, separation chamber with coalescing media, and clean water outlet chamber.

The water enters the inlet compartment where the oil separation process begins. Here, baffles slow down the water flow which causes some of the solids to drop out of suspension. Next, parallel corrugated coalescing media in the separation chamber cause the oil droplets in the water to coalesce together, and increase in size until they separate from the water. This coalescing media, with an internal structure of interconnecting channels, can remove essentially all free and dispersed, non-emulsified oils to an effluent concentration of less than 5 ppm – which is acceptable for discharge to most municipal sewer systems.

October 28, 2020

During the winter as winter storms approach, many municipalities will spread salt directly on the roads.  Additionally, many have started to proactively apply what are called anti-icing fluids to prevent water from forming frost on the pavement surface. Whether anti-ice or deicing fluids, they all share the same basic chemistry, which is some form of salt.  The formulations include sodium chloride, calcium chloride or magnesium chloride. Additionally, the anti-icing fluids often include organics such as beet juice or cheese whey.

This presents a unique issue for winter washing operations, especially when closed loop wash water treatment systems are employed.  Closed loop wash water treatment systems are used in a variety of instances including no access to public sewer systems, unreasonable permitting issues associated with sending water to the sewer, and uneconomic costs to tie into a sewer system due to the distances.

When cars and trucks are driving on roads coated with either deicing or anti-icing fluids, the vehicle’s body will often become covered with a thin coating of salts.  During typical washing operations, the salt is flushed off.  If the wash bay is connected directly to a sewer, that salty water is diluted and simply sent to the city without issues.  However, if the wash system is connected to a closed loop system where that water is used over and over, the salt levels will continue to rise in the wash waters. This leads to the salt being reapplied to the vehicle, which show up as salt streaks when it is dried. But more important than the streaks, the salt residue enhances the corrosion process on the metal.

There is no simple or inexpensive way to remove salts from wash waters. One option is to haul off or send a portion of the salt contaminated water to a city sewer.  Another option is to use a thermal evaporator to continually evaporate a small amount of the water in the closed loop system’s volume so that fresh water can be added.  Periodically, the concentrated water and salt mixture in the evaporator would also have to be hauled off.  The evaporation process will reduce the total volume of waters to be hauled off, and hence, reduce the hauling cost. The third option is to use a membrane filtration system.  However, this method is expensive and not at all well suited to process waters contaminated with dirt, dust, cleaning chemistries, and oils.

The salt in the waters also has implications for the components of wash water treatment systems. Although our oil water separator system is constructed of 304 stainless steel, salts in the water may attack the welds in the unit and accelerate the corrosion process.  Additionally, salts will attack pump shafts and cause the seals to leak.  If this happens, the only solution is to change the pump.

To combat the effects of corrosion, we offer various levels of corrosion protection to our clients. For our oil water separators, we offer an internal coating which forms a tough barrier that protects the stainless steel from the salt.  For our other treatment systems, we can upgrade the pumps from carbon steel to a salt resistant 316 stainless steel, which will prevent any pitting of the shafts and pump internals.  We can also add a conductivity meter to continually monitor the amount of salts and other chemicals in the water and trigger an alarm when the levels rise too high.  Once this water is pumped out or discharged, fresh water is automatically added to the system, diluting the salts to a manageable level.

August 17, 2020

Robustly designed for range of industrial applications from oilfield pipe washing to large equipment washing to large hand tools, our Solids Settling Systems with Geo Bags are designed to help control costs associated with solids removal from wash bay sumps.

They can be constructed in a range of sizes, configurations and materials, depending on your application. Main components include a multi-compartment sump, an air driven solids handling pump, a control system, geo de-watering bags, and optional holders.


  • Built to any size and configuration
  • Heavy-duty construction
  • Range of porosities available
  • Cost effective
  • Easy to install and move
  • Impervious to non-petroleum

System Components

Geo Bags – Placed in the sump or securely fastened to the end of a discharge pipe or hose, the bag slows down the flow of the incoming water, allowing the suspended solids to remain in the bag. Over time, the bag releases the water. Once the sediment-laden bag is de-watered, it can be picked up by a front-end loader and easily disposed of according to local enforcement agency regulations.  The fabric is comprised of a heavy non-woven fabric and double chain stitched for extra security.  Non-woven geo-textiles are approved by many local, state and federal agencies, including the Federal Highway Administration, U.S. Army Corps of Engineers, the Environmental Protection Agency and AASHTO.

Pump & Control System – We use heavy-duty, solids handling, air driven pumps that can be fully or partially submerged. These pumps handle debris ranging from stringy to abrasive up to 2” diameter including slurries. The pump and control systems come with a variety of valves, seats, and control panel options that will be engineered to your particular application.

Sump System – The sump is an integral part of the solids handling and separation system. They can be built in stainless steel, aluminum or concrete, with multiple compartments, weirs or screens. Sump sizes are engineered for the washing application and water treatment system.  Depending on the application and location, they can be placed above ground or buried.


August 6, 2020

This commercial-grade Hand Sanitizer Dispenser is totally hands-free!  Constructed of stainless steel for maximum durability, it is perfect for dispensing both gel and liquid hand hygiene products. A foot pedal activates a stainless steel mechanical pump that sprays a field-adjustable amount of product into the users hand – eliminating contamination due to hand contact.

Ideal for food preparation areas, hospitals, military facilities, retail stores, offices and countless other locations, this dispenser can be free-standing or permanently mounted to the floor or wall. The floor-mounted unit has the option of having a lockable enclosure to discourage tampering or theft. Easily installed in minutes!

June 26, 2020

Robustly designed and manufactured for commercial and industrial washing applications, our heavy-duty, multi-stage, closed loop treatment systems treats the wash water so it can be used continuously without any discharge to the sewer or surroundings.

Stage 1 – Solids Settling

Wash Water Treatment System For Commercial Trucking Industry
Many companies choose to haul this water away, but a more efficient way of removing this cost is by recycling and reusing the water.

Many commercial washing operations produce a generous amount of solids so the first stage of our filtration process is the solids handling system. We help you develop site-specific solutions to eliminate as many solids as possible before running the water through to the next stage of filtration. Solutions include custom-designed sumps, basins, trenches or screening systems.

Stage 2 – Oils & Solids Separation 

Truck Wash Water Treatment System
Our Commercial Truck Wash Systems are heavy-duty, multi-stage reclaim and discharge systems, engineered and manufactured for the trucking and transportation industries.

After the coarse solids settling, the water is processed through a multi-compartment stainless steel clarifier oil-water separator, which separates out smaller suspended solids, oil and water. In the first compartment, free oils float to the surface.  In the second section, the stainless steel clarifying plates remove coarse amounts of oil and as much Total Suspended Solids (TSS) as possible.  The angles of the non-clogging plates are 55° which allows solids to slide down the plates into the solids hopper, where they can easily be pumped out.   Next, the water goes through our coalescing media which removes essentially 100% of all free and dispersed non-emulsified oils so the FOG effluent concentration can be as low as 5 ppm.

Stage 3 – Water Filtration, Odor Reduction & Polishing

After the clarifier oil-water separator, the water is pumped though several filtration steps including multi-media (sand, gravel, anthracite), blended activated carbon, polishing filter, and corona discharge ozone. These filters reduce odors and any contaminants to fewer than 10 microns in size, including emulsified oils, waxes, and other volatile organic compounds. The amount of media, carbon, ozone and water storage volume are typically customized to meet your particular application.

Closed Loop System Features

  • Non-Ferrous Construction – Stainless Steel, PVC, Fiberglass
  • Fully-Automatic, pre-wired
  • Multi-Stage / Multi-Pass Filtration
  • Clarifier Separator System
    • Stainless Steel Clarifier Oil/Water Separator with 55° Hopper
    • Advanced European coalescing media designed to remove oil droplets greater than 20 microns
    • Electric or Air Diaphragm pump with controller
  • Closed Loop Filtration System
    • Automated Self-Cleaning Multi-Media and Carbon Fiberglass Filter Tanks
    • Heavy-duty, high efficiency Re-Circulation Pumps
    • Heavy-duty high efficiency Re-Pressurization Pumps
    • Transfer pump to pump water from clarifier separator to system
    • Heavy-duty Ozone System to control odors (up to 32 gms per hour)
    • (2) Poly water storage tanks – UV Protected
    • Sensors and interconnecting Schedule 80 plumbing
    • NEMA-4X  control panel
    • PLC controller for automatic back wash operations
    • All components mounted on heavy-duty stainless steel skid

Depending on the location, many options are available to maximize the efficiency of the wastewater treatment system including:

Optional Features

  • Can be configured with existing equipment
  • SCADA and remote monitoring UL/CSA Listing
  • Transportable equipment rooms
  • Rain Diverter Systems
  • Chemical/Acid/Salinity Resistant Pumps & Components
  • pH control system


MODEL CT-10/10 CT-35/20 CT-65/50 CT-100*
DESIGN FLOW RATE, GPM 1-10 1-25 10-55 30-100
CLARIFIER SEPARATOR SIZE, FT (WxLxH) 3 x 7 x 5 3.5 x 8 x 6 4 x 10 x 6 5 x 11 x 7
MULTI-MEDIA, LBS 300-500 500-1000 2500-2600 3700-4200
ACTIVATED CARBON, CF 4-15 10-40 20-40 40
DIRTY WATER STORAGE VOLUME, GAL 500-750 500-1000 750-1500 1000-2500
CLEAN WATER STORAGE VOLUME, GAL 500-750 500-1000 750-1500 1000-2500
OZONE SYSTEM, GRAMS/HR 8-16 8-32 16-32 32
RECLAIM CONTROL SYSTEM PLC, Automatic, Manual or Off
4 x 6 x 6.5 4 x 8 x 8
POWER REQUIREMENTS 208 / 240 V 1 ph   or  208 / 240 / 480 V 3 ph



May 27, 2020

Gas Fired Pressure Washing System
Gas Fired Pressure Washing System

Our natural gas or propane-fired pressure washers are exceptionally well-engineered systems. Designed and manufactured for heavy-duty commercial and industrial washing operations, they will operate for years in the harshest environments.

Each machine offers our unique “variable flow” feature, which allows the operator to vary the flow rate and corresponding pressure at the wand when needed—providing flexibility when cleaning various surfaces.

Unlike other gas-fired washers that require maintenance every couple months, our washers are known for their long-lived, low maintenance heating systems and robust construction.


  • CSA approved for use with a Class B exhaust vent
  • Belt-driven with a multi-gun pressure regulating valve and an oil bath plunger pump with thermo-probe protection.
  • Trigger gun activated, flow switch controlled auto start/stop system with solid state time delay shutdown
  • Centralized systems for multiuser applications
  • Modulating gas thermostat control with steady temperature up to 200°F
  • 395,000 BTUH input rated heater with adjustable temperature controller and factory-set safety relief valve
  • Large capacity 3/4 in. schedule 80 heating coil with stainless steel wrap and 10 in. draft diverter
  • Dual or single lance/gun(s) with 50 ft. x 3/8 in. high
  • Low-pressure (downstream) or high-pressure (upstream) chemical injection
Pressure Washing Gas Fired System
Pressure Washing Gas Fired System

Factory Added Options

  • SRA – Surge Relief Assembly (for installation on water supply line when backflow preventer or check valve present)
  • ARS – Automatic re-light system for pilot light
  • LWPP – Low inlet water pressure protection with illuminated reset button
  • ETM – Hour Meter
  • CLS – Cleaning station assembly with ½’ ball valve and hose quick connect
  • CS-1 – Chemical injection station with adjustable chemical injector wash/rinse control valve and swivel connection
  • 2G40 – Additional G40 heater with extended frame for a total BTUH input of 790,000.


Gas-fired Pressure Washing Systems

Flow Pressure Motor Full Load Current (Amps) Size-Inches
MODEL GPM PSI H.P. 230V/1PH 208V/3PH 460V/3PH 575V W”xL”xH”
WB4011-G 4 1100 3 17 9.8 4.4 3.5 45/38/52
WB4019-G 4 1900 5 22 14.6 6.6 5.3 45/38/52
WB4029-G 4 2900 7.5 33 22.5 10.2 8.2 45/38/52
WB5430-G 5.4 3000 10 29 13.1 10.5 45/38/52
WB5620-G 5.6 2000 7.5 33 22.5 10.2 8.2 45/38/52
WB6012-G 6 1200 5 22 14.6 6.6 5.3 45/38/52
WB6020-G 6 2000 7.5 33 22.5 10.2 8.2 45/38/52
WB8012-G* 8 1200 7.5 33 22.5 10.2 8.2 45/38/52
WB8019-G* 8 1900 10 29 13.1 10.5 45/38/52
WB8029-G* 8 2900 15 40 18.1 14.5 45/38/52
WB1030-G* 10 3000 20 55.2 24 20 45/38/52

*Comes with two hoses and wands.

North Carolina


At WashBaySolutions.com, we have been specializing in high tech, custom-engineered solutions to complex washing and wastewater issues since 1991.
+ 1 800-453-8639




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