Alar Corp

Solving Worldwide Industrial & Environmental Wastewater Problems Since 1970

Dewater For Pennies Per Gallon with an ALAR Auto-Vac Sludge Dewatering System

Got Sludge? Then you need the the Alar  Auto-Vac Sludge Dewatering System.  Alar’s patented filtration works great with DAF systems and replaces conventional centrifuges, filter press and belt press technologies.

The Auto-Vac generated landfill ready solids that are often used as compost or spread on fields.  The clean filtrate water can be discharged into the city sewer or in some cases, used for irrigation.

The ALAR Auto-Vac pulls instead of presses the liquid, leaving the solids suspended on the top of the drum. As the drum rotates an advanced knife blade slices the solids off the drum…leaving a clean surface with every rotation.

The Auto-Vac requires approximately 30 minutes to start and 30 minutes to clean.  No breaking of plates or labor is needed.  An operator simply starts the machine and spends the remaining shift work on production for the company. The dry solids come off the Auto-Vac about 2 to 3 times drier than the filter press.  When paying for hauling, this will save dollars in the long run; the wetter the solids-the more the more hauling weight.Auto-Vac Rotary Vacum Drum Precoat Filter


With over 2,000 installations worldwide, ALAR is confident that the Auto-Vac will exceed your expectations.  ALAR manufacturers 16 filter sizes that can handle low or high volumes.

Industries Served:  Commercial Bakeries – Snack Food – Dairy – Meat Packaging – Slaughter Houses – Candy – Wineries – Fisheries – Beer



March 17, 2015 at 4:00 pm Comments (0)

ALAR Water Recycling Systems

ALAR Auto-Vac C-Series Filter

ALAR Auto-Vac C-Series Filter

ALAR Water Recycling Systems will be at the World of Concrete Show this week at the Las Vegas Convention Center.   ALAR’s Booth No. N253 will have a working model of the Auto-Vac on display.

The photo in this post is the Auto-Vac C Series Water Recycling/Cement Dewatering Filter.  It is a self-cleaning filter that dewaters cement fines and yields nearly ASTM C-94 grade batch water.  Processed water can be recycled back into the batch without influencing set times and finishing.  It has redefined wastewater filtration in the concrete industry.  It is the only water recycling system that is  self-cleaning filter (non-clogging) on the market that filters cement fines and pigment color out of concrete process (gray water); yielding clear recyclable water and dry manageable solids.

The Auto-Vac is the mechanical alternative to conventional weir systems and dredging operations used by precast and ready mix producers dealing with high return rates, color, and high strength concrete.

Excellent for Concrete Operations Including but Not Limited To:

  • Ready Mixed
  • Precast
  • Color/Iron Oxide Pigments
  • Sawing/Grinding/Grooving/Polishing/Drilling
  • Roofing & Concrete Tile

This photo was taken at Spragues’ Ready Mix plant in California.  Read their case study on ALAR’s website.

If you are attending the World of Concrete in Las Vegas this week, please be sure to stop by our booth for more detailed information.

February 3, 2015 at 5:48 pm Comments (0)

Non-Potable Water For The Concrete Industry

ALAR AutoVac (2)

From the National Ready Mixed Concrete Association:  The CA Division of State Architect has drafted a regulation to provide instructions on the use of non-potable water sources for use as mixing water in concrete.  It permits the use of non-potable water that has been qualified within guidelines of ASTM C1602.

The Alar Auto-Vac C-Series Filter has redefined wastewater filtration in the concrete industry.

The filter uses vacuum technology. A rotating drum is pre-coated with a filter media called diatomaceous earth (DE).

After the pre-coat is complete, cement fines are pumped into the pan where the drum is rotating, the vacuum

pulls the clean water through the drum and traps solids larger than 1/2 micron on the DE surface.

After the surface of the drum is blinded, a variable speed blade advances and removes the solids from the drum surface

leaving a clean layer of filter media.  The clean water is pumped to a non-potable water tank for reuse.

Concrete Operations Include but Not Limited To:

Ready Mixed – Precast  -  Color/Iron Oxide Pigments  -  Sawing/Grinding/Grooving/Polishing/Drilling  -  Roofing & Concrete Tile

The Auto-Vac comes in 16 sizes to accommodate virtually any volume.


July 11, 2014 at 3:25 pm Comments (0)

Why Treat Wastewater?

Wastewater, also written as waste water, is any water that has been adversely affected in quality by human influence.

Industrial wastewater treatment covers the workings and process used to treat water that has been contaminated in some way by industrial activities prior to its release into the environment or its reuse.

Most industries produce some wastewater although recent trends in the populated world have been to minimize such production or recycle such wastewater within the production.  However, many industries remain prone to processes that produce wastewater and have a need to obtain very high quality water for demanding purposes.

There are several different types of wastewater treatment equipment available; two most known are the rotary vacuum filter and the plate and frame filter press.

Alar builds the Auto-Vac Rotary Vacuum Drum Filter and the Micro-Klean Plate and Frame Filter Press as well as the Flex-O-Star Solid Liquid Separation System and our Slurry-Klean Automatic Plate-n-Frame Filter Press.Alar Wastewater Treatment Fleet

The Alar systems work remarkably well in many industries; Concrete, Flexographic Printing, Food & Dairy, Grease & Septic, Metal Finishing, Paint & Coatings, Oil Rig Drilling Mud, Flowback and Produced Water as well as many other industries.

Wastewater treatment applications include but not limited to: Total Suspended Solids (TSS), Metals, Fat Oil & Grease (FOG), Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), pH (potential Hydrogen).

Contact an Alar Sales Rep to find out which treatment and filter is best suited for your industrial wastewater application.


May 20, 2014 at 3:40 pm Comments (0)

Trailer Mounted ALAR Auto-Vac for Oil Drilling Rig and Hydraulic Fracturing Wastewater

Trailer Mounted Auto-Vac Alar designs and builds customer industrial wastewater treatment equipment.  Each machine is welded and assembled at Alar’s manufacturing facility then hooked up in the test-bay and put through a rigorous quality diagnostics program by our in-house engineers.

The unit shown in the picture was custom-built for dewatering oil drilling rig and hydraulic fracturing wastewater.

The Auto-Vac was mounted onto a customer-supplied 54 foot trailer.  The Alar production department piped and wired all the plumbing and electrical connections between the skids and auxiliary components.

This Auto-Vac was built to handle severe weather. To prepare for freezing conditions, Alar installed extensive winterized piping and drainage, quick disconnects, industrial heaters, and specialized light fixtures and supports.

The Auto-Vac AV690 is one of the largest mobilized wastewater systems available.  Alar builds larger filters, but they need to be installed at a centralized location.

Alar accepts industrial wastewater challenges of all sizes.  Contact Alar today and find out what filtration system is best for you.

April 28, 2014 at 3:24 pm Comments (0)

Dewater For Pennies Per Gallon – Metal Finishing and Metal Plating Industry

Auto-Vac Rotary Vacum Drum Precoat FilterALAR Engineering’s versatile filtration systems are capable of handling a variety of problem wastes generated in the Metal Finishing or Plating Industry.

Chrome, cadmium, and zinc are just some of the heavy metals that ALAR technology can tackle.

Industries that ALAR serves:  Aerospace – Anodizing – Plating – Powder Coating – Surface Finishing

The Auto-Vac is a rotary vacuum precoat filter that effectively removes solid particles from the sludge, producing dewatered  dry waste.  Typically, this waste is disposed of at a local landfill without further drying.


March 21, 2014 at 4:36 pm Comments (0)

ALAR at ConExpo Con/Agg 2014

ALAR has a booth at the ConExpo Con/Agg show this week in Las Vegas. ALAR’s Booth #S61352 will have a working model of the Auto-Vac® on display in their booth.

Stop by and say “Hello” to our sales team, bring along your questions.

ALAR provides time-proven equipment for Ready-Mixed and Precast Producers dealing with high return rates, color and high strength concrete wash-up.  The ALAR Auto-Vac® C-Series filter has redefined wastewater filtration in the concrete industry. It is the only self-cleaning filter (non-clogging) on the market that filters cement fines and pigment water out of concrete process (gray) water; yielding clear recyclable water and dry management solids.

  • Enhance Reclaimer Efficiency
  • Remove Cement Fines & Color
  • Eliminate Weirs & Pond Dredging
  • Reduce Wet Sludge Hauling Costs

ALAR AutoVac (2)

The Auto-Va®c is the mechanical alternative to conventional weir systems and dredging operations used by precast and ready mix producers dealing with high return rates, color, and high strength concrete.

The Auto-Vac® comes in 16 sizes to accommodate virtually any volume.


March 3, 2014 at 6:03 pm Comments (0)

Making Good on the Environment Makes Good Economic Sense

Steve Toland, COO Spragues' Ready Mix

Steve Toland, COO Spragues’ Ready Mix

Environmental regulations and heightening overhead costs, compounded with falling construction spending and cement demand, is a bleak forecast that has many concrete producers closing and talking about price increases. Though California is outperforming the average, a need exists not only to make money but to save  money.

Spragues’ Ready Mix serves small to midsize contractors, and operates 12 trucks at their Irwindale, CA facility.  As an independent producer, Spragues’ is not vertically integrated with aggregate companies; making them dependent upon crushed rock, sand, and gravel suppliers.

Specializing to a niche market generates a fair share of unused concrete returns.  In an effort to be more “green”, SRM invested in reclaimer technology that reduced their aggregate dependency by approximately 30%  The remaining 70% of irreclaimable material was disposed of as compounded waste, and ultimately replenished.  The gray water was introduced back to the batch with some success, but created quality and consistency issues.

They concluded that the reclaimer performance was related to specific gravity levels in the gray water it produced.  The recycling process stopped when the cement fines reached saturation; pinpointing the solution to slurry management.

Spragues’ used conventional do-it-yourself methods to reduce cement fines.  “One of the problems we faced was available space to dry out our slurry into a solid that was suitable for disposal”, stated Steve Toland, COO.  “We would have to dredge our ponds, dry out the slurry, which could take up to two-weeks and created dust and track-out issues.”

In May of 2009, Spragues’ installed a Liebherr LRS 708 concrete reclaimer and an ALAR Auto-Vac® AV640-C slurry-water recycling system combination.  “We are capable of reclaiming up to 30 cubic yards a day.  However, with limited water capacity, we usually reclaim 10 to 15 cubic yards.  We typically filter 12,000 gallons of [slurry] five days a week, which is used as ready mix batch water”, says Toland.

Spragues’ approach to aggregate reclaiming and slurry processing is very simple: “The cost of aggregate remains very high, disposal costs also continue to rise.  It makes sense for us to reuse as much of this natural resource for economic reasons with a lesser impact on our environment.”

Since the implementation of the Liebherr/ALAR combo, SRM reports dollar savings in ‘tens-of-thousands’ with a 90% reduction in their waste stream.  “We have been able to dramatically reduce our disposal costs of returned concrete and reuse most of the returned concrete back into ready mix production”, Steve claims.

An integral part of Spragues’ philosophy is maintaining waste and water management efforts while remaining innovative with products, services, and people.  “If it is good for the customer, good for the environment, and makes economic sense, then it is the right thing to do.”

Alar AV640-C Slurry Water Recycling System Pictures

Spragues Pictures With Captions_Page_1





February 4, 2014 at 8:41 pm Comments (0)

Why pH Is Important in Wastewater Treatment

The term “pH” refers to the measurement of hydrogen ion activity in the solution.

Determination of pH plays an important role in the wastewater treatment process. Extreme levels, presence of particulate matters, accumulation of toxic chemicals and increasing alkalinity levels are common problems in wastewater.

As a chemical component of the wastewater, pH has direct influence on wastewater treatability – regardless of whether treatment is physical/chemical or biological. Because it is such a critical component of the makeup of the wastewater, it is therefore critically important to treatment.
Before proceeding with treatment, you have to identify the parameters, the impurities that are in the wastewater. Once you know what you are dealing with, you determine the starting and the ending pH values, along with treatment procedures; then you have to select the appropriate chemicals best suited for treatment.

ALAR brings the analytical aspects of wastewater to a mechanical level. Chemical separation systems or simple pH adjustment is often times that all is needed to treat and dispose of wastewater. ALAR’s water treatment chemicals are designed to treat pH; Alar F201 and Lime. ALAR F201 functions well in both potable and wastewater clarification of a wide range of pH and can be used for color removal, phosphate removal, heavy metal removal and lime softening applications.

ALAR connects chemistry and innovation with the right equipment to solve the most challenging problems. We use our knowledge of chemistry, engineering, and technology to deliver results.Chemical Additon smaller

December 9, 2013 at 4:48 pm Comments (0)

What is TSS in Wastewater?


What Are They?

Before & After Wastewater Treatment

Before & After Wastewater Treatment

TSS are solid materials, including organic and inorganic, that are suspended in the water.  These would include silt, plankton and industrial wastes.

Where Do They Come From?

Suspended solids can result from erosion from urban runoff and agricultural land, industrial wastes, bank erosion, bottom feeders, algae growth or wastewater discharges.

The Solution?

ALAR’s Wastewater Treatment Systems separates solids from water, the sources of which are not limited to: industrial waste, food processing, chemicals, metal finishing, grease and septic, and flexographic ink.   Unless properly treated, wastewater can harm public health and the environment.

Wastewaster is mostly water by weight.  Other materials make up only a small portion of wastewater, but can be present in large enough quantities to endanger public health and the environment.

ALAR’s Wastewater Treatment Systems effectively remove solid particles from the sludge, producing clean/dischargeable water along with dewatered dry solids.


November 18, 2013 at 8:52 pm Comments (0)

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