Blog Single Author Fullwidth

Abanaki September 2020 Blogs#1

How Do You Know What Size of Oil Skimmer You Should Purchase?

Oil skimmers operate with a very basic principle. That basic principle is the breaking of surface tension to attract oil to the belt or tube. Because of this design, it is critical to size the oil skimmer according to the surface area being skimmed rather than the amount of oil in the tank.Abanaki September 2020 Blogs#2

For example, you could have a tank or pit that measure 144 square feet but only contains 2-4 gallons of oil at any particular time. Sizing the oil skimmer according to 2-4 gallons versus the surface area would yield unproductive results. Yes, you may only have small amounts of oil, but if your oil skimmer is undersized, that oil skimmer will not have enough power to break the surface tension with enough force to bring oil from the other side of the tank.

Therefore, you could run the oil skimmer for days and never retrieve the oil from the far side of your collection point. Always take into account how large of an area you want to skim oil from when determining what oil skimmer will work best for your application.

What are the general questions you need to know about your application?

EastSumpThere are a few things to consider when choosing an oil skimmer for any application. The most important thing is to pick an oil skimmer that is suited for the size of the application and the correct belt type. The questions below will help narrow it down:

  • What is the size of the tank or sump you wish to skim from?
  • What is the type of oil you are looking to remove?
  • What amount of oil do you need to remove?
  • What is the point of access on the tank or sump?

From here you can either use our oil skimmer selection guide or call your Abanaki representative at (440) 543-7400 to help point you in the right direction.


To learn more about oil skimmers, please contact our experts at 440-543-7400 or visit our website: www.abanaki.com


How to Successfully Implement Oil Skimmers

Abanaki Newsletter Summer 2019 P1

Learn how Abanaki oil skimmers help you save by “taking just a little off the top.”

Selecting and sizing your next oil skimmer correctly is important – the wrong decision can cost your facility thousands over the long term. 

Watch this webinar.

Read more

When properly selected and applied, oil skimmers are highly economical solutions for separating oil from water to allow its reuse or safe disposal. However, there are certain applications that can expect optimal results. Typical applications best suited for oil skimmers encompass:Introduction

Wastewater Sumps

Wastewater sumps where removing floating hydrocarbons can reduce the cost of disposal and lower the contingent liabilities of wastewater discharge.

Most manufacturing or processing facilities have water systems where waste oil collects in a central tank or sump. Skimming the floating oils with little water content can reduce the cost of disposal and lower the contingent liabilities of wastewater discharge.

Coolant and Cutting Fluids

Coolants and cutting fluids where skimming tramp oils extends coolant life, improves the quality of machined parts, reduces irritating smoke that forms during machining, lessens the chance of dermatitis and helps prevent the fluid from developing a “rotten egg” odor. Oil Boss After - Kirsan

Oil skimmers utilize the differing specific gravity between oil and coolant/water to remove tramp oils. A motor driven belt that is typically constructed of an oleophilic, or oil attractant material, is placed into a coolant sump or reservoir. As the belt moves through the coolant, it attracts tramp oils. The oil is scraped off by a wiper and deposited into a container.

Heat Treating

Heat treating operations where trench oils must be removed from heat-treated parts, and can be captured with a skimmer for re-use or disposal. This reduces oil purchases, prolongs wash water life and lowers disposal costs.

Parts Washers

multi belt 5 x 8 ak steelParts washers where removing floating oils from a wash tank prevents re-contamination of the parts as they are removed from the fluid and extends fluid life.

Industrial parts washers, paint lines, and machine shops all have a need to remove oil from water. Abanaki oil skimmers are trusted throughout the automotive industry to extend coolant life, reduce disposal costs, and avoid fines from municipal sewer districts.

Food Processing

Food processing facilities where the removal of vegetable oils, greases and animal fats from a plant’s wastewater stream reduces processing and disposal costs.

Oil skimming is the most reliable and lowest cost method of removing food greases and oils from process wastewater. An oil skimmer uses the difference in specific gravity between oil and water, allowing the oil skimmer belt to attract frying oils, vegetable oils, greases, and animal fats as the belt passes through the surface of the water. The simple belt-and-motor approach is proven to operate unattended and reliably for decades with little maintenance.

Parking Lots, Garage and Service Facilities

Parking lots, garages and service facilities where waste oil from leaks, spills and other sources must be retrieved from sumps before water can be discharged to storm or sanitary sewers.

Outdoor Ponds, Lakes and Basins

Outdoor ponds, lakes and basins where floating oils are present, skimmers provide inexpensive and effective removal, solving a serious environmental problem.

Recovery/Monitoring Wells

Recovery/monitoring wells where a belt skimmer can be used instead of a down well pump to remove oil, fuel and other hydrocarbons. Generally, this is more cost-effective and reduces maintenance headaches. Skimmers can reach depths of 200 feet or more and remove floating products despite fluctuating water tables.Belt skimmer

The PetroXtractor is a well oil skimmer that makes use of the differences in specific gravity and surface tension between oil and water. These physical characteristics allow the unit’s continuous belt to attract floating oil in the well. After picking up the oil, the belt travels over the head pulley on the drive unit and through tandem wiper blades. The oil is then scraped off both sides of the belt and discharged through a 1-1/4″ ID hose. The unique bearing-less design of the tail pulley (immersed in the well water) with its tethered frame allows it to perform three important functions: it keeps proper tension on the belt, prevents accidental loss down the well, and keeps the belt centered in the casing.

Remediation Processes

Remediation processes where skimmers can be used effectively in tandem with other means and reduce the overall cost and increase the speed of the cleanup. For example, when using bio-remediation techniques, skimmers can be used to first remove the bulk of the oil from the groundwater. Then more biological agents may be used to clean up the remaining contamination. The remaining oil will clean up faster, as there will be less of it.

Sometimes called pump-less groundwater remediation systems, oil skimming is the lowest cost way to remove hydrocarbon contamination from groundwater. Oil skimming alone may clean water to acceptable levels or be used as a pre-filter treatment. It is the most inexpensive way to remove LNAPLs or DNAPLs.


To learn more about oil skimmers, please contact our experts at 440-543-7400 or visit our website: www.abanaki.com


Oil Skimmers Get the Dirty Jobs Done

CTE June 2020

In the video, oil skimmer is shown removing spent lubricant from a collection tank in a steel production facility.  Due to the extreme heat resulting from the steel making process, lubricant used for conveyor bearings often leaks into the cooling water, creating a floating goop that can foul filters further upstream. 

{{cta(‘b1b0050d-5874-4a33-b9d9-0d4a470b1fc6′,’justifycenter’)}}

Read more

All moving media skimmers use motors to move the belt, tube, disk, etc. While many are designed with standard, industrially rated, continuous-duty motors and also may use fully enclosed speed reducing drives, some can be specified with a number of motor options. These may include:motor

  • Any common voltage or electrical requirement
  • Explosion proof
  • Drip proof
  • Tropicalized
  • Dirty conditions duty
  • Food service duty
  • Water wash-down duty

Consider also any optional equipment that may be available with the skimmer you are evaluating. Accessories allow customized systems that can ease installation and optimize performance. Some of the more common options include:

  • Special Drive Components. Tail Pulleys can help improve removal rates by stabilizing belt assemblies in the fluid. Yoke-and tether assemblies help prevent pulley loss due to human error or belt breakage.
  • Mounting Stands and Adapters. These include pre-engineered mounting stands for easier installation. Models also are available for pits, walls and free-standing units.
  • Shelters/ Enclosures. Reinforced poly-shelters and below-grade enclosures provide protection from the elements.Rosemont-3628-Tote-It-application-photo-21-234x300
  • Controls/Accessories. A float switch and warning light can be used to monitor fluid level in the oil collection drum, which helps prevent overflow. Other options include a timer, control panel, variable speed drive and power packs. 
  • Concentrator. Generally, the ratio of water to oil decreases with thicker films of floating oil and slower moving pick-up media. A concentrator or decanter installed at the skimmer discharge port provides secondary oil/water separation that can reduce water content to nearly zero.
  • Heaters. Many skimmers can be ordered with heating devices to keep skimmed product fluid in cold environments.

To learn more about oil skimmers, please contact our experts at 440-543-7400 or visit our website: www.abanaki.com


How to Skim Oil from Coolant Using Tube Skimmer

Abanaki August 2019 email#1a

tube oil skimmer can be used on machining centers with little or no access to the coolant sump from above. Plus, a tube oil skimmer can remove oil from chip conveyors or enclosed machining centers.

{{cta(’45a0dfc3-a1e3-4d7e-8f71-f90731328be6′,’justifycenter’)}}

Read more

Abanaki July 2020 Blog#1-1For industrial oil skimming, there are six basic designs commonly used in moving media skimmers. (Suction skimmers are excluded, as they are generally unsuitable except for relatively thick (1/4 inch) layers of oil; otherwise they tend to ingest large amounts of water.)

In more demanding situations, skimming is a cost-effective means of removing most of the oil before using more complicated and costly treatments, such as coalescers, membrane filters and chemical processes.

Belt-Type Skimmers

Abanaki July 2020 Blog#1-2Belt-type skimmers use an endless belt of stainless steel, elastomer or polymer medium, which is lowered into the tank or vessel to be skimmed. The belt passes through the fluid, and then through the skimmer’s resilient wiper blades where the oil is removed from both sides of the skimmer medium. Removal rate is not affected by belt length. The length is chosen to ensure contact with the liquid at its lowest level. The belt length should also allow easy mounting of the skimmer where oil discharge is convenient, and assure easy access for routine service. Lengths up to 100 feet or more are possible.

Mop Skimmers

Mop skimmers use an endless medium shaped like a rope that has mop-like tendrils that pick up the oil. As the medium leaves the liquid and enters the drive unit, it is pressed and wrung out with pinch rollers. For higher viscosity oils, this medium tends to mat down and lose effectiveness. Generally, a decantation system must be used with these units, as water pickup can be quite high. Also, replacement mops tend to be more expensive than belt type media.

Large Tube Skimmers

Large tube skimmers use a floating plastic hose that snakes out over the surface of the liquid and is then drawn back through the drive unit where oil is removed. This design requires a relatively large amount of fluid surface area for proper operation. Length considerations are the same as for belt skimmers; a typical tube diameter is 1 inch. Abanaki July 2020 Blog#1-3

Mini Tube Skimmers

Mini tube skimmers are very similar to the larger tube units, but typically have either a 3/16-inch or a 5/16-inch diameter tube. The 5/16-inch diameter is preferable as it has enough stiffness to not drag on the housing and prematurely wipe off oil when drawn into the unit. Pickup rates vary from 1 quart/hour to 1.5 gph, depending on diameter and speed. These units can be used where space is limited. Units that have the motor mounted underneath reduce the amount of space required over the rim of the tank to nearly zero.

Disk Skimmers

Disk skimmers rotate a disk-shaped medium through the liquid. Oil is wiped off and discharged into a collection container in a manner similar to belt skimmers. When specifying disk diameter, it is important to consider reach, the portion of the disk that actually gets immersed. Less disk area in the fluid means less oil removed. Obviously, fluctuating fluid levels can be a real problem.Growel_MD18_photo

Also, it is important to look at how much of the disk the wipers are actually wiping. If they wipe only 2 inches from the edge, then any reach into the fluid beyond 2 inches is wasted. As a result, removal capacities for disks can be relatively low.

Drum/Barrel Style Skimmers

Drum/barrel styles are similar to the disk type, but use a rotating drum-shaped medium. Compared to disk types, they are usually more rugged and have higher removal capacity. These units can also be rendered ineffective by fluctuating fluid levels.

When properly selected and applied, oil skimmers are highly economical solutions for separating oil from water to allow its reuse or safe disposal.


All of our coolant skimmers are rugged, reliable and low maintenance. Removal capacities range from 1 to 200 gallons per hour. Browse the types of oil skimmers and oil skimming accessories in our website www.abanaki.com or contact our experts at 440-543-7400 to find the right solution for your application.


Unfamiliar with our Oil Skimming products? Go to the Skimmer Selection page to view the types of oil skimmers for every application.


Watch this video to see how do industrial belt skimmers work.

Read more

industrial skimmerThere are several types of industrial oil skimmers. Choosing one best suited for your application will maximize oil removal while minimizing capital outlay and skimmer operating costs. You may define the application in terms of the following characteristics:

Operating Conditions

The performance and life of the pick-up medium, wiper blades, pulleys, etc. are affected by operating conditions. These include temperatures in and out of the liquid, the pH of the solution and the presence of solvents or other reactive chemicals.

Hazardous Materials

Applications involving flammable materials or explosive vapors require the use of explosion-proof (or air-driven) motors and controls.

Temperature/Viscosity

All skimmers require floating oil to be in a liquid, free-flowing state. (See Note 2 under Table 1 for an exception.) If the oil congeals or solidifies at ambient temperatures, the reservoir and/or skimmer will require heaters to maintain fluid flow.

table one-1Removal Rate

removal rateSkimmer removal rates, expressed in gph, vary with oil viscosity. Typically, manufacturers rate skimmers using SAE 30 weight motor oil at 65 degrees Fahrenheit (18 degrees Celsius). It’s wise to ask for test data, especially if your application involves a much different viscosity. Your skimmer selection should be based on the maximum amount of oil to be removed within the shortest available time. For instance, suppose total oil influx is 200 gallons a day. The calculated average would be 200/24 = 8.3 gph. However, if most of it comes during a single 8-hour plant shift, you probably need a removal rate three times that average, especially if you need to prevent the discharge of contaminated water to a sewer system. As a rule of thumb, specify approximately twice the maximum capacity you anticipate needing for normal conditions.

Skimmed Water Content

All oil skimmers pick up some water with the oil. Suction skimmers pick up more water than other types. High water content increases oil recycling and disposal costs. Generally, the ratio of water to oil decreases with thicker films of floating oil and slower moving pick-up media. A concentrator or decanter installed at the skimmer discharge port provides secondary oil/water separation that can reduce water content to nearly zero.

Residual Oil

oc_2A skimmer removes oil as long as it is present. Depending on oil influx rate and the skimmer’s removal rate, residual oil in the water may be as low as a few parts per million. When further reduction is required, a secondary removal stage such as membrane filtration may be needed.

Portability

In some plants mobile equipment service shops and at remediation sites, a portable skimmer can sometimes service multiple machines, sumps or wells.

Tank or Sump Characteristics

The location, shape and capacity of a tank or water impoundment are major factors in choosing the right skimmer. Also consider fluctuations in water level, turbulence and possible emulsions. Although skimmers do not cause emulsions, they may have trouble removing certain types.

Size/Design

Oil and water can emulsify when subjected to turbulence and other mechanical agitation. Avoid this by having water return to the tank below the liquid surface at as low a velocity as practical. Make sure the tank or sump provides quiet areas, weirs and sufficient volume to allow adequate time for oil/water separation.

Shape

locationTanks without nooks and crannies for oil to accumulate in are best. If you have an irregular shape, put the skimmer where the largest amount of oil accumulates. Consider a means of directing oil toward the skimmer such as a floating boom or baffle plate.

Location/Installation

Questions to ask about the physical location and characteristics of the tank and collection container: Does skimmed material need to be pumped from the skimmer to the container? Will skimmer access for periodic maintenance be a problem? How much mounting space is available? Are tank or container modifications required? (Total skimmer system costs may involve additional components, tank modifications and skimmer maintenance.)


All of our coolant skimmers are rugged, reliable and low maintenance. Removal capacities range from 1 to 200 gallons per hour. Browse the types of oil skimmers and oil skimming accessories in our website www.abanaki.com or contact our experts at 440-543-7400 to find the right solution for your application.


Unfamiliar with our Oil Skimming products? Go to the Skimmer Selection page to view the types of oil skimmers for every application.


Watch this video to see how to remove a higher amount of tramp oil.

Read more

Oil skimmers are simple, dependable and effective tools for removing oil, grease and other hydrocarbons from water. They usually pay for themselves within a few months. In order to ensure the oil skimmer you choose is right for your operation, there are certain steps you can follow.

Understand the Designs

Abanaki June 2020 Blog-4First, understand that while designs vary, all oil skimmers rely on the fluid properties of specific gravity and surface tension. Most use a moving medium to remove floating oil from the fluid’s surface , as shown in Figure 1 (the exception is a floating suction skimmer). Floating oil and grease cling to skimming media more readily than water. This allows media in the shape of a belt, disk, drum, etc. to pass through the fluid surface and pick up floating oil and grease while rejecting most of the water. The oily material is subsequently removed from the media with wiper blades or pinch rollers.

What Kind of Contaminant

Second, realize that the kind of contaminant being removed does affect the kind of skimmer you should choose. Grease skimming involves higher viscosity hydrocarbons. These skimmers must be operated at temperatures high enough to keep the grease fluid. This may require heating elements in the fluid reservoir and skimmer unit to keep the grease in a liquid state for easier pick-up and discharge. If floating grease forms into solid clumps or mats in the reservoir, a spray bar, aerator or other mechanical apparatus can be used to break up the grease and facilitate skimming.

When using bio-remediation techniques, skimmers can be used to first remove the bulk of the oil from the groundwater.

Power of the Skimmer

Finally, be aware of the power of a skimmer. Often a skimmer by itself can achieve the desired level of water purity. In more demanding situations, skimming is a cost-effective means of removing most of the oil before using more complicated and costly treatments, such as coalescers, membrane filters and chemical processes.


To learn more about oil skimmers, please contact our experts at 440-543-7400 or visit our website: www.abanaki.com


In this video, you will see how do different sizes Abanaki oil skimmers work with different media types. 

Abanaki oil skimmer applications video

Read more