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January 25, 2021
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Even though the terms “Oil Interceptors” and “Oil Water Separators” are often used
interchangeably, they are very different systems.

Interceptors

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
facilities.

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.


January 21, 2021
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Problem: A facilities manager with a national maintenance company called looking for a corporate solution for their wash pads. They were expanding into several new markets and wanted to standardize their washing and water treatment systems.

Complications included the fact that most of their vehicles are sweeper trucks which generate a lot of solids. A typical wash yields 1/3 yard of solids. With each facility washing 10+ units per day, the amount of solids generated per month was substantial. Also, each facility has a slightly different layout. The good news was that most of them were connected to the municipal sewer.

Solution:  Since their solids handling issues needed to be addressed in addition to their washing and water treatment issues, we offered our engineering services to help them design a custom solution that they could standardize as much as possible for their wash bays and solids settling basins.

Once we completed the design, we recommended a number of washing and treatment options based on their desired washing processes.  Due to the fact that they had a variety of vehicles and equipment, they decided on both a demucking system and pressure washing system for washing. The demucking system was paired with a partial water reclaim system to recycle the water multiple times before the water was sent through our SPT-20 Clarifier Oil Water Separator System to process it for acceptable discharge to the sewer.

Finally, all of the equipment was installed in a TER-20 Transportable Equipment Room. This will save installation costs as well as allow the customer to move the equipment to a different location in the future. It also saves space inside of the customer’s building for other critical activities.

 


November 16, 2020
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For over 30 years, we have custom-engineered and built cleaning and pumping systems based on our customer’s individual specifications and site-specific needs.

By integrating a range of pumps, tanks, and control systems, custom systems can be built to meet specific design and output requirements for virtually any low, medium or high pressure cleaning or pumping application.

If you think you have a unique application, let us design a unique system for you.  Here are some of the interesting projects we have already tackled:

  • Electrically heated aircraft de-icing systems for use on regional jets
  • Air-driven and electric-driven pumping packages for high pressure injection and drill bit cooling in underground mining applications
  • Integrated, variable volume pumping packages for use with water soluble cutting oil on CNC machines
  • High volume, high pressure pumping packages for use on egg carton extrusion presses
  • High pressure, low volume pumping packages utilizing hot and cold de-ionized water for automated printed circuit board cleaning systems
  • High pressure systems for cleaning with heavy water in nuclear reactors
  • High pressure, high volume pumping packages for de-watering in sewage treatment plants
  • Automated pumping packages utilized in precooked shell fish cleaning systems
  • Electrically heated systems for high pressure cleaning with peanut and vegetable oils in food grade applications
Custom Engineered Cleaning & Pumping Systems
Custom Engineered Cleaning & Pumping Systems
Custom Engineered Cleaning & Pumping Systems
Custom Engineered Cleaning & Pumping Systems

October 28, 2020
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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 31, 2020
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Our single wall or double wall below ground parallel, corrugated plate oil/water separators meet and exceed API 421 requirements, removing essentially 100% of dispersed non-emulsified oil droplets in the waste stream.

These separators are special purpose prefabricated parallel corrugated plate, cylindrical, gravity displacement oil water separators, containing an inlet compartment, sludge chamber, separation chamber, oil storage area and clean water compartment.

As shown below, the separation process if fairly simple. Wastewater flows into the inlet compartment. A baffle interrupts the flow and allows solids to drop out. Next the oil water moves into the separation chamber where our innovative media causes small oil droplets entrained in the water to coalesce into larger ones which then separate from the water and float to the surface. The clean water then travels into the clean water compartment through the outlet to the sewer.

Features

  • Patented, revolutionary, non- plugging coalescing plates which remove free oil droplets as small as 20 microns
  • Single wall or double wall construction with interstitial space for leak detection
  • Rectangular access manhole with 3’ extension to service and maintain coalescing media
  • Fittings for vent, oil pump out, sludge pump out, gauging and lifting lugs
  • Exterior sandblasted and coated
  • Will achieve discharge of 5 ppm or less in accordance with CEN EN 858-1
  • Warranted for (5) years on material and workmanship and (30) years against external and internal corrosion
  • Construction in accordance with UL58 and corrosion protection in accordance with UL1746
Below Ground Oil Water Separator Design
Featuring one of our oil water separator designs to be placed under ground.

Options

  • Internal coating for corrosion protection
  • Grit chamber for high solids applications
  • Hold down straps
  • Leak and Level detection systems

Applications

  • Parking Lots
  • Re-fueling Facilities
  • Marinas
  • Military Installations
  • Truck and Equipment Washes

How does it work?

Analysis

With these separators, we can provide analysis, which indicates that the separator will be provided with the required square feet of projected plate separation area to achieve the specified performance under laminar flow (i.e. Reynolds Number of less than 500) conditions. This service can include calculations signed by a registered professional engineer.

Underground Oil Water Separator Specifications
Model # Average Flow Rate (GPM) Capacity (GALLONS) Dimensions, D x L (FT)
WB-QB-342 30-60 350 3.5 x 6
WB-QB-548 55-110 550 4 x 6
WB-QB-1048 100-200 1000 4 x 10.75
WB-QB-2064 200-400 2000 5.3 x 12
WB-QB-3064 300-600 3000 5.3 x 18
WB-QB-4064 400-800 4000 5.3 x 24
Larger sizes available.

Underground Oil Water Separator Specifications

Frequently Asked Questions

 


August 17, 2020
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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.

Benefits

  • 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
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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 30, 2020
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Designed to remove extensive contamination, our heavy-duty, multi-stage, discharge treatment systems treat wash water so it can be safely discharged to the sewer or, in many cases, the surroundings.

Stage 1 – Solids Settling 

Multi-Media Sewer Discharge Water Treatment

Almost all commercial washing operations produce some 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 

After the coarse solids settling, the water is processed through either a multi-compartment stainless steel oil water separator or a stainless steel clarifier oil-water separator, which separates out smaller suspended solids, oil and water. In the first compartment of the clarifier oil water separator, free oils float to the surface.  In the second section, the stainless steel clarifying plates remove coarse amounts of oil from the waste stream and remove as much Total Suspended Solids (TSS) as possible.  The angles of the non-clogging plates are 55° which will allow any solids to slide down the plates into the solids hopper, where they can easily be pumped out.   Finally, the coalescing media 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 & Polishing

After the clarifier oil-water separator, the water is pumped though a multi-media (sand, gravel, anthracite) filter and then safely discharged to the sewer or surroundings. Processed water passing through the system will be free of substantially all emulsified oils, waxes and other volatile organic compounds with only limited soaps and detergents remaining in the treated water. If needed, a blended activated carbon or a carbon/clay mixture tailored to a particular waste stream can be added as an optional polishing filter.

System Features

  • Non-Ferrous Construction – Stainless Steel, PVC
  • Fully-Automatic, pre-wired
  • 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
  • Discharge Filtration System
    • Automated Self-Cleaning Multi-Media and/or Clay/Carbon Fiberglass Filter Tank
    • Heavy-duty, high efficiency Pump
    • 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

TYPICAL MM-SERIES SYSTEM SPECIFICATIONS

MODEL

MM-10/10

MM-35/20

MM-65/50

MM-100*

DESIGN FLOW RATE, GPM

1-10

1-25

10-55

30-100

COALESCING PLATE AREA, SF

41

124

211

400

COALESCING MEDIA, CF

4

8

24

48

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

NON-EMUSIFYING INFLUENT PUMP, GPM MAX

20

50

75

125

MULTI-MEDIA, LBS

300-500

500-1000

2500-2600

3700-4200

OPTIONAL POLISHING CLAY/CARBON, CF

4-15

10-40

20-40

40

FILTER PUMP, HP

1.5

2

3

5

DIRTY WATER STORAGE VOLUME, GAL

500-750

500-1000

750-1000

1000-1500

CONTROL SYSTEM

PLC, Automatic, Manual or Off

PUMP FRAME SIZE, FT (WxLxH)
(TANKS ADDITIONAL)

3 x 6 x 6.5

3 x 8 x 8

POWER REQUIREMENTS

208 / 240 V 1 ph   or  208 / 240 / 480 V 3 ph

 

* LARGER CAPACITY SYSTEMS (200-1500 GPM) ARE AVAILABLE

 

APPLICATIONS:

 


June 26, 2020
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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

TYPICAL CLOSED LOOP SYSTEM SPECIFICATIONS

MODEL CT-10/10 CT-35/20 CT-65/50 CT-100*
DESIGN FLOW RATE, GPM 1-10 1-25 10-55 30-100
COALESCING PLATE AREA, SF 41 124 211 400
COALESCING MEDIA, CF 4 8 24 48
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
NON-EMUSIFYING INFLUENT PUMP, GPM MAX 20 50 75 125
MULTI-MEDIA, LBS 300-500 500-1000 2500-2600 3700-4200
ACTIVATED CARBON, CF 4-15 10-40 20-40 40
POLISHING FILTER, SET 1 1 1 1
RECLAIM RE-CIRCULATION PUMP, HP 1.5 1.5 3 5
RECLAIM RE-PRESSURIZATION PUMP, HP 1 3 5 7.5
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
RECLAIM PUMP FRAME SIZE, FT (WxLxH)
(TANKS ADDITIONAL)
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

* LARGER CAPACITY SYSTEMS (200-1500 GPM) ARE AVAILABLE

APPLICATIONS:


North Carolina

Headquarters

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

WashbaySolutions.com

sales@washbaysolutions.com

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