Be Our Guest at NASF SUR/FIN 2018

M.W. Watermark invites you to join us at the NASF SUR/FIN® Show in Cleveland this year – with a free show floor admission!

NASF SUR/FIN 2018 is where leading surface technology companies connect, collaborate and contribute. It is the primary conference and trade show dedicated specifically to the surface technology industry.

It’s as Easy as 1-2-3!

  1. Click here or visit the NASF SUR/FIN website at www.nasfsurfin.com to learn more about the show.
  2. Click on the Register button near the center of the SUR/FIN website home page, or go directly to the Registration Page. Click the Register Now button.
  3. Enter “Exhibits Only” comp code C601 on the Registration Form (Advance Registration Column). Note: Comp code is for online registration only.

Click the Register Online button at the bottom of the page to complete your registration.

We will be exhibiting in Booth #601. See you at the show!

Contact an M.W. Watermark Sales and Service Team member to learn more.

Download our Surface Finishing Products Overview brochure.

Be our guest at NASF Sur/Fin 2018 with a free show floor admission

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

The M.W. Watermark Oil Coalescing Separator Across Industries

The M.W. Watermark Oil Coalescing Separator (OCS) is a powerful piece of equipment that can be highly effective across a variety of industries and applications.

Our OCS units are designed to remove free non-emulsified oils, diesel, gasoline and fuels from a waste stream, resulting in an effluent quality of 10 mg/l or less of contaminants 20 microns and larger.

Read on, and we’ll explain a few of the most notable ways in which our customers can employ the M.W. Watermark OCS.

M.W. Watermark Oil Coalescing Separator (OCS); Oil Water Separator
M.W. Watermark Oil Coalescing Separator (OCS)

Industrial Applications for the M.W. Watermark Oil Coalescing Separator

M.W. Watermark offers our OCS in a wide range of sizes in order to appeal to the needs of several industries, including, but not limited to:

Aviation

Because aircraft are so large, the water used in the washing process may collect a great deal of grime and oil, which makes for an excellent chance to put the M.W. Watermark OCS to work. The separator will leave the water virtually oil-free, allowing it to be reused and helping to prevent unnecessary water waste.

Automotive

From bus terminals to general-purpose vehicle washes, the automotive industry offers ample opportunity to take advantage of our OCS.

Groundwater Remediation

A variety of human activities, from pesticide to landfill leakage, can cause significant groundwater pollution. These contaminants can be at least partially addressed with the M.W. Watermark OCS.

Marine

Separators are common components on ships, where they’re used to help purify oily bilge water.

Oil/Petroleum

The collection and refinement of petroleum is the perfect match for our OCS, because it results in a massive amount of oily wastewater, the treatment of which is subject to strict regulations.

Power Production

Most types of power plants require the use of both oily lubricants and water throughout their systems. An OCS can help ensure that when leakages and contamination occur, the lubricants can be thoroughly separated from the water for easy disposal.

Other Industries and Applications

Other businesses that can benefit from the M.W. Watermark OCS include chemical processing plants, paper mills, steel mills and much more. For assistance in selecting an OCS that meets the needs of your industry or for more information about our available wastewater treatment products, reach out to M.W. Watermark online or by phone at (616) 399-8850.

Visit our Oil Coalescing Separator product page to learn more.

Contact our Sales and Service Team for a quote.

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

PolyMark™ Polymer Blending Equipment

M.W. Watermark PolyMark™ Polymer Blending Equipment
M.W. Watermark PolyMark™ Polymer Blending Equipment

M.W. Watermark’s PolyMark™ polymer blending equipment delivers reliable performance coupled with precise, yet highly intuitive controls. Eager to learn what makes our PolyMark™ polymer dosing system unique? Read on to discover how it works.

What Sets the PolyMark™ Apart from the Competition?

M.W. Watermark’s PolyMark™ polymer blending system delivers a high level of control and precision without sacrificing user-friendliness. It’s simple – the blending system combines undiluted liquid emulsion polymer with a stream of water. Then, the machine’s operator can adjust the easy-to-use controls to regulate flow application as necessary.

The PolyMark™ Line

Our extensive line of PolyMark™ polymer blending units feature options with solution flow rates from 25 gph to 2400 gph and neat polymer flow rates from 0.05 gph to 60 gph in order to suit a variety of applications.

Additionally, while the most basic PolyMark™ model features a DC (Direct Control) controller unit with on, off and remote control features, more advanced models employ SFC (Solution Flow Control) controllers, which offer:

  • Touch screens with remote control capability
  • Trending display of water flows, polymer rate and percent concentration
  • Configurable startup and shutdown processes
  • Fully automated primary and post-dilution flow control
  • And more

M.W. Watermark PolyMark Polymer Blending Units

PolyMark™ Dosing App for Your Smartphone or Tablet

Need an easy way to calculate polymer dosages while in the field or on the go?

Download our free PolyMark™ Sizing Calculator App for Android.

M.W. Watermark PolyMark Polymer Blending System - Sizing App for Android

Learn More About M.W. Watermark’s PolyMark™ Polymer Blending Equipment

Thanks to its versatile design, our PolyMark™ polymer blending system can be used across a wide range of industries, from water treatment to chemical processing and beyond.

Visit our PolyMark™ webpage to learn more.

Contact M.W. Watermark for a quote.

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

How to Determine the Size of Filter Press Needed for Your Application

M.W. Watermark 800mm Filter Press

A filter press is a piece of batch operation, fixed volume equipment ranging from .01-600 cubic feet that separates liquids and solids using pressure filtration. A slurry is pumped into the filter press and dewatered under pressure. (A slurry is a semi-liquid mixture, typically composed of fine particles suspended in water).

A filter press can be used for process, water and wastewater treatment in a variety of industries and applications. In most applications, filter presses are used for dewatering solids prior to disposal. However, in some cases the separated solid or liquid is the actual product.

Because filter presses are used across so many applications, there is no “one size fits all” when it comes to determining filter press sizing requirements.

Fortunately, over the history of commercial businesses and municipalities utilizing filter presses for a multitude of applications, two basic and reliable mathematical formulas have been developed to cover most situations.

The first formula covers most “standard” slurries. The second formula covers slurries composed of metal hydroxides, which are often found in wastewater from metal plating and finishing operations.

Filter Press Sizing Formulas

Standard Slurries

M.W. Watermark Filter Press Sizing Formula: Standard Slurries

Metal Hydroxide Slurries

M.W. Watermark Filter Press Sizing Formula: Metal Hydroxide Slurries

M.W. Watermark’s goal is to help our customers make the most informed equipment and equipment sizing decisions possible.

Our team’s many years of experience across a wide variety of filter press applications provides a knowledge base that serves our customers well.

Feel free to contact M.W. Watermark at any time to discuss your particular solid-liquid project.

Please work to obtain in advance as much of the information as possible outlined below. If one or more criteria are not available, M.W. Watermark can test a sample of the slurry, and/or use some standard data. (See Laboratory Testing section below for more information).

Information Needed to Size and Quote a Filter Press

• Type of slurry to be processed

• Amount of slurry to be processed in a given amount of time expressed in either:
—Gallons per minute, per hour, per day or per week
—Pounds of solids (100% dry basis) per time period

• Number of hours per day, and days per week the process operates

• Percent solids (by weight) in slurry

• Specific gravity of slurry (if available)

• Process operating temperature

• Density of wet filter cake

• Chemical conditioning amounts, if required (D.E., etc.)

• Press location: Indoor or outdoor, temperature range

• Desired cake thickness (std. is 32mm – 1 1/4”)

• Desired closure & control automation (Specify: Manual, Semi-Automatic or Automatic)

• Other (Please specify optional features required)

Laboratory Testing

M.W. Watermark maintains an in-house laboratory for determining the most effective equipment, equipment sizing, filtration media and dewatering techniques for your specific application.

After treatment, we can return to you the clean water (filtrate) and filter cake, along with an analytical report of our findings.

Our services range from feasibility testing of your materials to providing portable pilot filter press units for on-site testing.

M.W. Watermark 250mm Pilot Filter Press

M.W. Watermark 320mm Pilot Filter Press

Filter Press Sizing App for Your Smartphone or Tablet

Need an easy way to size a filter press while out in the field or on the go?

Download our free Filter Press Sizing Calculator App for Android.

M.W. Watermark Filter Press Sizing Calculator App for Android
M.W. Watermark Filter Press Sizing Calculator App for Android

Contact us today to discuss the details of your solid-liquid separation project.

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

M.W. Watermark Filter Presses: Made with Pride in the U.S.A

M.W. Watermark specializes in the design, manufacture and rebuilding of high-quality municipal and industrial water treatment equipment, including filter presses, as well as supplying parts and service to keep the world’s water supply clean and usable for generations to come.

Our facility is located in Holland, Michigan, U.S.A. Working with customers around the globe, we pride ourselves on our ability to provide a quick turnaround time on high-quality equipment and aftermarket parts. Over the years, our business has grown to become the North American leader in filter press manufacturing.

M.W. Watermark Filter Presses with Semi-Automatic Plate Shifters - Manufactured In the U.S.A. M.W. Watermark Filter Presses - Manufactured In the U.S.A.

What has fueled our growth? A commitment to offering quality, reliability, quick delivery, and value defines our company. Our manufacturing team takes great pride in building high-quality products based on many years of industry experience. In fact, each team member who has worked on a filter press or other piece of equipment proudly provides their signature on a job well done – in the form of a customer “thank you” card which is included along with the service manual.

M.W. Watermark Filter Presses - Made with Pride In the U.S.A. - Customer Thank You Card M.W. Watermark Filter Presses - Made with Pride In the U.S.A. - Customer Thank You Card

When you purchase water and wastewater treatment equipment manufactured by M.W. Watermark, you can be confident in your investment and the people that stand behind their workmanship.

Contact us today to learn more.

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

Filter Presses and Cloths for "Lees Filtration"

How the Filter Press is Used in Winemaking

Filter presses are used for separating solids from liquids across many industries and applications. In the wine industry, the filter press is often referred to as a “lees filter.”

M.W. Watermark 470mm Filter Press Used for Lees Filtration in Winemaking
M.W. Watermark 470mm Filter Press

Lees is the sediment at the bottom of fermentation vessels and includes solids such as grape skins, pulp, stems, seeds and residual yeast. Lees can represent up to 10% of a winery’s total volume, which can be a significant amount in a larger winery. Lees also contain a high percentage of recoverable product, with solids concentrations typically in the range of 20-30%, which lends itself well to dewatering via filter press.

Grapes Used in Winemaking. Source: Wikipedia. Filter Presses and Filter Cloths for Lees Filtration.
Grapes Used in Winemaking. Source: Wikipedia

A filter press is also well-suited for this type of application as the lees filtration process generally results in a filter cake with low residual moisture (a relatively dry cake). The lees slurry is usually combined with a filter aid such as DE (Diatomaceous Earth) and fed into the filter press using an AOD pump.

Lees from Merlot Following Fermentation. Source: Wikipedia. Filter Presses and Filter Cloths for Lees Filtration.
Lees from Merlot Following Fermentation. Source: Wikipedia

The Role of Filter Cloths in Lees Filtration

M.W. Watermark Gasketed Filter Plates and Cloths Used for Lees Filtration in Wine Making
M.W. Watermark Polypropylene Filter Plates and Cloths

Filter cloths also play an important role in lees filtration. However, for many years wineries had few choices in the type of materials available. Traditional winemaking filter cloths have been composed of very fine mesh with low permeability and challenges in cleaning. Filter cloths were usually kept as long as the press itself, replaced only if damaged beyond repair. (Source: Wines & Vines, Jan. 2013).

Multifilament Filter Cloths

More recent polypropylene filter cloths have been made of multifilament threads, which are grouped together to form a single strand, or “yarn.” Multifilament fibers feature good particle retention and are very durable, since a break in a single thread has very little impact on the overall stability of the cloth.

However, the large number of threads create many spaces where solids can settle into the interior of the cloth, which can cause clogging (blinding). This can also lead to the proliferation of microorganisms using lees as a food source. The deeper the particles are embedded in the cloth, the more difficult they are to remove, causing challenges in cleaning.

M.W. Watermark Multifilament Filter Press Cloth; Filter Presses and Filter Cloths for Lees Filtration
Multifilament Filter Cloth (Click Image to Enlarge)

During the past few years, the market for winemaking has generated a wider range of available fabric types, including monofilament and mono-multi cloth materials.

Monofilament Filter Cloths

Monofilament filter cloths utilize individual round, continuous single-core plastic wire to form the cloth. This provides for a very smooth surface, with low particle retention and excellent cake release characteristics. These cloths also have the advantage of being more permeable, allowing for higher flow rates.

Because there are less spaces where solids can settle, they are less likely to become blinded, and are much easier to clean. The only drawback to monofilament cloths is in their durability. Because these cloths are woven from individual strands instead of multiple fibers woven together they are more fragile, and a crack in a single strand can compromise the stability of the entire cloth.

M.W. Watermark Monofilament Filter Cloth; Filter Presses and Filter Cloths for Lees Filtration
Monofilament Filter Cloth (Click Image to Enlarge)
Mono-Multi Filter Cloths

Mono-Multifilament fabrics combine the benefits of both mono and multi to get the best of both worlds. That is, the excellent cake release, higher flow rates and ease of cleaning of monofilament, plus the durability of multifilament fibers.

M.W. Watermark Mono-Multi Filter Press Cloth; Filter Presses and Filter Cloths for Lees Filtration
Mono-Multi Filter Cloth (Click Image to Enlarge)

M.W. Watermark has a team of experts on staff that can help you determine the best solid-liquid separation equipment and filter cloths for your particular application. We have an in-house laboratory where we can test your slurry sample and recommend the best pre-treatment, equipment and filter cloths to form an ideal filter cake. 

Contact M.W. Watermark to learn more or for a quote.

Visit our Filter Cloths 101 page for FAQ’s, additional blog links, filter cloth terms and more information on materials.

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

Filter Press Maintenance and Critical Spare Parts

A filter press is designed to consistently perform in industrial environments that are oftentimes hard on equipment. With a proper maintenance routine, a filter press can last for many years.

M.W. Watermark is a leading filter press manufacturer.

The purpose of this blog is to give an overview of recommended maintenance for your press and important spare parts to keep on hand to help minimize downtime.

Start with the Service Manual for Each Filter Press…

If you are maintaining multiple filter presses at your site, work to determine commonalities between presses.

M.W. Watermark Filter Press Owner's Manual - Cover

By reviewing the service manual, you should be able to determine basic information including the manufacturer, type of hydraulic system and size of the filter plates. In addition, the service manual should include a list of replacement parts. Using this information, you can develop a list of spare parts to keep on hand.

However, if the service manual is not available, M.W. Watermark can assist with parts by utilizing photos of the filter press and the hydraulic system. For replacement cloths and plates, a photo along with the appropriate cloth or plate template form allows you to quickly communicate the dimensions and requirements to M.W. Watermark.

We have versions of these forms for both CGR (Gasketed) and NG (Non-Gasketed) filter cloths as well as CGR and NG filter plates.

Filter Cloth Template Forms

Filter Plate Template Forms

M.W. Watermark Filter Press Parts

Basic Filter Press Maintenance Tips

M.W. Watermark recommends annual oil changes on an air-over-oil filter press. As compressed air is introduced into the oil with each cycle, the oil absorbs moisture from the air. This can cause premature failure in components if the oil is not changed regularly. We recommend a high quality ISO-46 for air-over-oil hydraulic systems.

We also recommend changing the oil filter and air filter at least once per year. Keep an extra oil filter and air filter on hand for each filter press.

Check the hydraulic components for leaks on a regular basis.

Keep the following spare hydraulic components on hand in case of failure:

  • Relief valve cartridge.
  • Release / decompress valve.
  • Directional spool valve.
  • Hydraulic pump repair kit.
  • Spare hydraulic pump.
  • Air and hydraulic pressure gauges – 1 of each.
  • Hydraulic cylinder or seal kits – depending on age of cylinder.

Consider commonalities between presses.

M.W. Watermark Filter Press Hydraulic Components to Keep on Hand

Special tools to keep on hand

There are specific tools available for maintaining a filter press, filter cloths and gasketing. When a filter press goes down, time is of the essence and searching for the right tool for the job can be frustrating. Therefore, we recommend the following set of tools be kept on hand at each location where filter presses will be serviced and maintained:

  • Spanner wrench.
  • Air hammer.
  • Spatula.
  • Wedge.
  • Backup plate.
    • A backup plate (also known as a “blanking” plate) allows you to continue to run the press even if a filter plate breaks or a filter cloth goes bad.
    • Also good for running smaller batches.

M.W. Watermark Special Tools for Filter Press Cloths

Filter Cloths and Gasketing Materials

  • We recommend keeping some filter cloths and gasketing materials on hand for each press.
  • Filter cloths need replacement when your filter press is no longer forming a solid filter cake. Read about other symptoms that indicate it may be time to replace the cloths.
  • Proper care of filter cloths is an important part of maintaining the performance of a filter press. Learn more about options for cleaning your filter cloths.

M.W. Watermark Filter Press Cloths and Gasketing Material

Filter Plates

  • Clean and inspect filter plates regularly.
    • Make sure the plates are properly cleaned after scraping so that no sludge remains in the gasket sealing surfaces.
  • Keep extra plates on hand for each press in case of breakage, depending on age.
  • Again, consider commonalities.

M.W. Watermark Filter Press Plates

Hydraulic Power Unit (HPU)

If you are in need of an emergency fix for your hydraulic pumping system, but are not ready to replace or rebuild your filter press, then M.W. Watermark has a great solution for you.

M.W. Watermark has designed a stand-alone hydraulic power unit which serves as a universal retrofit for older-style filter presses.

As always, M.W. Watermark will continue to stock most air-over-oil hydraulic parts for models from other filter press manufacturers.

M.W. Watermark Retrofit Filter Press Hydraulic Power Unit (HPU)
Click Image to Download HPU Brochure
  • Available with either a 7 or an 11 gallon reservoir.
  • Size options cover most types of filter presses, from 630mm to 1200mm frame size.
  • System is air-powered: Pumps the press open and closed with hydraulic oil on both sides of the cylinder.
  • HPU has a 55:1 pump ratio.
  • Maximum clamp pressure of 4,600 PSI.

M.W. Watermark Services

  • Filter Plate Service
  • On-Site Services
    • M.W. Watermark service staff can visit your site to trouble-shoot equipment, repair hydraulic systems, etc.
  • Laboratory Services
    • Our lab services can help you determine the most effective filter press equipment, equipment sizing, filtration media required and dewatering techniques for your specific application.

M.W. Watermark Filter Press Laboratory Services

M.W. Watermark Aftermarket Accessories

  • In addition to cloth and gasketing installation tools, M.W. Watermark also offers other aftermarket accessories to help you maintain your filter press.
M.W. Watermark Filter Press Aftermarket Accessories Sheet
Click Image to Download Aftermarket Accessories Sheet

Contact M.W. Watermark to learn more or for a quote.

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

Mobile Filter Press Units for Rental

If portability is a factor in your solid-liquids separation project, then a trailer-mounted filter press from M.W. Watermark may be the best option.

Many of our customers have found that a mobile filter press can serve as the ideal choice for dewatering a slurry and managing sludge in a remote location.

M.W. Watermark offers mobile units as part of our rental fleet.

M.W. Watermark Trailer-Mounted Filter Press; Mobile Filter Press Unit
M.W. Watermark Trailer-Mounted Filter Press

The latest mobile unit addition to our rental fleet features 1200mm filter plates with a semi-automatic plate shifter. Filter cloths are included based on customer specification. The manifold design is air blowdown / evenfill, and is constructed of PVC.

The trailer itself includes several helpful features, including flexible side curtains, independently adjustable trailer levelers, stainless steel cake chute, extendable slider belt conveyor, walkways / railings / stairs, electrical control panel, water wash-down deck and mounted overhead lighting.

M.W. Watermark Trailer-Mounted Filter Press; Mobile Filter Press Unit; User-Friendly Features
Our Mobile Filter Press Rental Units Include Several User-Friendly Features

Contact our Sales and Service Team to learn more about how M.W. Watermark can help you with your dewatering project.

We can help you determine if a mobile filter press rental is the best option for your application. 

View our current inventory of rental, surplus and rebuilt water and wastewater treatment equipment. 

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

Using Filter Presses in Flue Gas Desulfurization Wastewater Treatment

Coal-Fired Power Plants are Producing Over Half of Our Nation’s Electricity

Coal is the primary resource in the U.S. for producing electricity, and is currently generating over half of the electrical power used in our nation today. Coal offers over 274 billion tons of untapped supplies, which according to Industrial Water World, is enough to energize America for 250 years. New coal-fired power plants are being built and existing U.S. plants are being retrofitted for environmental compliance.

Coal combustion results in energy release, solid waste produced as bottom ash and fly ash, and flue gas emissions to the atmosphere. These gas emissions are made up of sulfur oxides (SOx), nitrogen oxides (NOx), carbon monoxide and other pollutants. About two thirds of SOx and a quarter of all NOx in our atmosphere come from the generation of electric power from coal and other fuels. SOx causes acid rain, and NOx creates atmospheric ozone.

SOx compliance requires the use of flue gas desulfurization (FGD). One of the most effective methods used in the U.S. to desulfurize flue gas is wet scrubbing, which can achieve SOx removal efficiency of greater than 90%. (Source: waterworld.com).

Castle Gate coal-fired power plant near Helper, Utah. (Source: Wikipedia.org). Coal-fired power plants utilize flue gas desulfurization in wastewater treatment processes.
Castle Gate coal-fired power plant near Helper, Utah. (Image Source: Wikipedia.org).

Flue Gas Desulfurization Wastewater Treatment

Following the wet scrubbing FGD process, the resulting wastewater must be treated before being released to surface water. FGD wastewater is highly complex, and its composition can vary significantly between plants. Flue gas desulfurization wastewater is often made up of multiple key contaminants, including high concentrations of TDS and TSS, nitrites and nitrates and trace amounts of heavy metals.

Because of its unique composition, FGD wastewater requires several steps to meet National Pollutant Discharge Elimination System (NPDES) requirements prior to discharge. This treatment typically includes the following steps: Calcium sulfate (gypsum) desaturization, primary clarification, equalization, trace metals precipitation, secondary clarification, filtration and solids dewatering. (Source: powermag.com).

While the design of a FGD wastewater treatment system can vary by power plant due to differences in contaminants, a filter press is commonly used for the separation of solids from liquids in the waste stream. After dewatering in a filter press, the solids are discharged as a filter cake for disposal in a landfill. The treated wastewater is either discharged to surface water or polished with a gravity filter to further reduce suspended solids prior to discharge.

M.W. Watermark manufactures and rebuilds filter presses utilized in the process of flue gas desulfurization wastewater treatment.
M.W. Watermark manufactures and rebuilds filter presses utilized in the process of flue gas desulfurization wastewater treatment.

Contact M.W. Watermark to learn more about how filter presses can be used in the process of treating flue gas desulfurization wastewater.

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.

M.W. Watermark Welcomes New Field Service Technician - Brandon Sanderson

M.W. Watermark Filter Press Field Service Technician

M.W. Watermark is proud to welcome Brandon Sanderson to our already talented field service team. Brandon comes to us with a strong technical background, from both a mechanical and electrical standpoint.

Brandon has spent the last eight years working in the energy industry – travelling to wind farms throughout the U.S. to maintain and repair industrial wind turbines. (These are the type of turbines that are 300 feet tall with a gearbox the size of some of our 1000 mm filter presses!)

Brandon also served as a reservist in the Michigan National Guard, gaining valuable experience by keeping our military vehicles in good running condition. He was activated for a period of time following 9/11, serving in a homeland security role by protecting the armory in Big Rapids, Michigan.

Brandon now enjoys helping customers solve equipment and filtration problems. His extensive experience in troubleshooting complex machinery has made him a quick study – easily grasping the nuances of filter presses and other industrial water and wastewater treatment equipment.

M.W. Watermark Filter Press Field Service Technician

Types of Field Services Available from M.W. Watermark

We offer many services to help reduce your costs and make your water and wastewater equipment run more efficiently.

Factory-trained, experienced, and TWIC certified service professionals including Brandon are available to come to your job site to troubleshoot and repair equipment. They can also train your staff and make recommendations on how to run your equipment more efficiently. We offer competitive rates.

M.W. Watermark Field Service Technician

Contact M.W. Watermark today for…

  • Start-Ups, Training, Installation
  • Mechanical Repairs and Troubleshooting
  • PLC Programming and Troubleshooting
  • Process Review and Improvements
  • Engineering
  • Rebuilds

All of our service technicians are fully insured.

Field service contracts are available upon request; this is a great way to keep your equipment running at peak efficiency.

Visit our website for more information, and be sure to read a field services customer testimonial letter on our blog.

About M.W. Watermark

M.W. WATERMARK wants to make a difference. We are passionate about the world’s water. We are innovative, focused on customer service and always try to exceed expectations. We are an environmentally conscious company with people who are energized, encouraged and inspired to make a difference on our planet by helping to keep our shared, finite water supply clean and usable for generations to come. We build amazing, custom water and wastewater treatment equipment. Together, we can make a difference.

The product names, logos, brand names, and other trademarks listed above are the intellectual property of their respective trademark owners; M.W. Watermark is not affiliated with such trademark owners in any way.