How to Select the Proper Filter Cloth for Your Application

Filter Press Cloths – Overview

Filter cloths come in many shapes, sizes and fabric types. Filtration results can vary depending on the type of cloth being used.

Shown below is a typical Non-Gasketed (NG) design cloth on top along with a Gasketed (CGR) design cloth on the bottom.

M.W. Watermark Non-Gasketed and CGR Filter Cloths; Filter Cloth Selection Process

M.W. Watermark manufactures these designs along with others like the drape over, half cloth, backing cloth and most other types.

Matching the most appropriate filter cloths for a given project requires knowledge of the design needed as well as the process application.

Filter Cloth Selection

Determining the proper cloth construction requires knowledge of the slurry characteristics and the filtration requirements. Below are some of the factors we consider in the filter cloth selection process.

Contact M.W. Watermark to learn more about how to identify or measure these variables.

  • Is the cake or the filtrate a product?
  • pH?
  • Slurry temperature?
  • Slurry particle size?
  • Is the slurry preconditioned (Polymer, DE, Ferric, Lime, etc.)?
  • Abrasive, coarse particles?
  • Existence of solvents, oils or greases?
  • Number of filtration cycles per day?

The above data helps in determining the following:

  • Fabric raw materials / compatibilities
  • Type of yarn (fibers)
  • Fabric weave
  • The type of fabric finishing needed to produce the best filter cloth for the application

Materials / Compatibles Chart

M.W. Watermark Filter Cloth Materials and Compatibles; Filter Cloth Selection Process

Filter Cloth Fiber Types

Filter cloths are manufactured using synthetic fibers.

  • Monofilament: Single, smooth, continuous extrusion. Highest flow rates, good resistance to blinding, good abrasion and scaling resistance. Fibers are typically between 4 mil and 10 mil (.004″ to .01″) in diameter. Best cake release.
    M.W. Watermark - Monofilament Filter Cloth Fiber; Filter Cloth Selection Process
  • Multifilament: Multiple continuous fibers twisted together to form one yarn. Excellent retention for smaller particles. Good cake release.
    M.W. Watermark - Multifilament Filter Cloth Fiber; Filter Cloth Selection Process
  • Staple (Spun): Short lengths of fibers (similar in appearance to cotton) spun into a yarn. Tends to have a “hairy” appearance. Best solids retention. Poorest cake release.
    M.W. Watermark - Staple Spun Filter Cloth Fiber; Filter Cloth Selection Process

Filter Cloth Fabric Weaves

  • Satin: Smooth surface for excellent cake release and resistance to scaling and blinding.
    M.W. Watermark - Satin Filter Cloth Weave; Filter Cloth Selection Process
  • Twill: Shown with multifilament yarns. Somewhat smooth surface with good cake release. Excellent filtration of fine particles. Flexible fabric.
    M.W. Watermark - Twill Filter Cloth Weave; Filter Cloth Selection Process
  • Plain: Very tight weave. Excellent filtration of fine particles. Good cake release.
    M.W. Watermark - Plain Filter Cloth Weave; Filter Cloth Selection Process

Fabric Finishing

Finishing of the fabric enhances the cake release, filtration quality and stability.

  • Singeing: Removal of fibers on the surface of staple and felt fabrics to enhance cake release.
  • Calendaring: With use of heated compression rolls, the fabric is “melted” to adjust the permeability and provide a smoother surface for cake release.
  • Heat Setting: Through a wet or dry process to create a dimensional stable fabric that will not shrink, stretch, etc.

Visit our Filter Cloths 101 & FAQ webpage for more information.

Contact M.W. Watermark to discuss your particular application.

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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.

© 2019 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

Evaluating Worn or Damaged Filter Plates

Filter plates are among the most important components of a filter press. To maintain peak levels of efficiency and avoid failure, the plates need to be inspected regularly for signs of wear or damage. To help you evaluate the state of your plates, M.W. Watermark™ offers some advice below. If you have any questions about a specific model or problem, contact one of our factory-trained service technicians for personalized assistance.

M.W. Watermark Keeps a Widely-Stocked Warehouse of Polypropylene Filter Plates In-House for Quick Shipping
M.W. Watermark Keeps a Widely-Stocked Warehouse of Polypropylene Filter Plates In-House for Quick Shipping

Identifying Potential Problems

In industrial settings, filter plates have to work through highly demanding conditions. While they’re designed to withstand high pressure and large volumes, over time, breakage and malfunctions can occur. When evaluating your filter press plates, one of the first things to look for is if they’re clean. They need to be cleaned thoroughly on all sides, especially the bottoms, and frequently, as dirty plates can cause inefficiencies and even catastrophic sidebar failure.

Next, you’ll want to check the components. If everything looks good and appears to be functioning properly, then no further action is required. Some of the most common part failures include the filter cloth and gasket. Filter cloths are prone to holes caused by abrasive sand, gravel and other particles. When holes appear, the aggregate flowing into the discharge can wear down the plastic on the discharge eyes of the plates.

Leaking is another common concern with filter plates. Some types of plates, like CGR (Caulked, Gasketed, Recessed Chamber) plates are designed to be virtually leak-proof. So if you spot some dripping, it could be a sign repairs are needed. With other types of plates, however, a little leakage may be normal.

Addressing the Issues

If you find that your filter plates are no longer performing at their peak condition, turn to M.W. Watermark for help. Not only do we supply maintenance and installation tools to perform repairs, but we also offer free video tutorials for some common “how to” topics. As always, we have factory-trained service technicians on standby to offer advice.

Additionally, if you need to replace your filter plates, we keep a large stock of polypropylene plates in-house and ready to ship, so you don’t have to worry about downtime. Or, you’re welcome to put in a custom request for specific dimensions or configurations.

Get Back Up and Running

If you have any questions about evaluating the condition of your filter plates or would like a quote, contact the team at M.W. Watermark today. You can reach us by calling 616-399-8850 or by submitting our online form.

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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.

© 2019 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

Common Filter Press "Filtering" Issues and Solutions

Are You Experiencing Any of These Common “Filtering” Issues?

Cake Sticking to the Filter Cloths

This can cause excessive time to discharge the filter cake. Debris causing more frequent filter cloth washing can lead to the need to change the cloths more often.

Poor Filtrate and/or Filter Cake Quality

Poor filtrate can cause non-compliance with local water authorities. If the filtrate is the product, this can cause issues requiring additional filtration. Poor cake solids (too much moisture) can also cause the cake to stick to the cloths, increasing disposal costs. If the cake is a product, this condition may require extra time for drying.

Poor quality filter press cake
Poor Quality Filter Cake
Ideal filter press cake: Firm, fudge-like slabs
Ideal Filter Cake: Firm, Fudge-Like Slabs
Cake Build-Up Inside the Feed Port (Core) of the Filter Plate

Excess core buildup slows the cake discharging process, as each filter plate core will need to be cleaned prior to shifting the next plate (even if the filter cake discharges completely). If not properly cleaned, this can lead to filtration issues on the next filtration cycle.

Holes Developing in the Filter Cloths

Holes cause the effluent to be cloudy and can cause filtration time to become extended.

M.W. Watermark™ is Your Go-To Resource for Filter Press Solutions

M.W. Watermark can help you resolve these filter press “filtering” issues and others as well.

In addition to manufacturing custom filter cloths, M.W. Watermark also designs, manufactures and services industrial filtration equipment including filter presses, clarifiers, oil coalescing separators and more.

M.W. Watermark is a leading filter press manufacturer
M.W. Watermark is a Leading Filter Press Manufacturer

M.W. Watermark’s Sales and Service Team members have the upfront knowledge to determine if your issue can be resolved by simply changing the type of filter cloth fabric being used, or if there is also a mechanical or chemical solution that should be implemented.

We pride ourselves on being able to solve the problem in a manner that works best for the customer.

M.W. Watermark Non-Gasketed Filter Press Cloths - Ready for Installation
M.W. Watermark Non-Gasketed Filter Cloths – Ready for Installation

Potential Filter Cloth Solutions / Troubleshooting Options

Air Permeability Testing

In our dewaterability laboratory, we can test your cloth both as received, and then after a pressure or chemical wash, to determine blinding solutions.

M.W. Watermark Air Permeability Testing; Filter Press Solutions
M.W. Watermark Air Permeability Testing Station
Your Filter Cloth Material May Need Changing

Polypropylene has become a popular fabric for the majority of filter press applications due to its high strength and excellent resistance to most acids and alkalis. However, there are now alternative fabric choices to help with especially challenging slurries, such as those that are highly abrasive.

Polypropylene Filter Cloth
Polypropylene Filter Cloth (Click to Enlarge)

For example, polyamide (nylon) offers a unique non-blinding, abrasion resistant and hydrophobic alternative to the conventional polypropylene and polyester fabrics, and may be more appropriate for certain applications.

In many cases, this fabric will last longer and require less cleaning – thus increasing the efficiency of the filter press operation.

We also offer highly calendared polypropylene cloths that offer similar benefits.

Fabric Permeability

Depending on the application, we can offer the best fabric permeability to maximize filtration efficiency.

Our fabrics range in permeability from .1 cfm to 100 cfm.

M.W. Watermark Air Permeability Testing - Laboratory Services; Filter Press Solutions

Weight of the Fabric

The weight of the fabric is typically proportional to its srength, which in turn affects the life of the filter cloth.

Larger equipment tends to require heavier weight fabrics.

Our range is 9 oz./sq. yd. to 20 oz./sq. yd. This range covers most filter press requirements.

Construction of the Filter Cloths

Filter cloth construction can be modified to better solve the issue at hand.

This can include the addition of hook and loop material to the top and/or side of the cloths for a better fit.

M.W. Watermark Rubber Barrel Neck Filter Cloth with Hook and Loop Material for a Better Fit; Filter Press Solutions

Addition of Rubber Barrel Necks

Rubber barrel necks are sometimes needed in the center of the pull-through to stop filtration in this area from occurring – and to offer better abrasion resistance.

M.W. Watermark Rubber Barrel Neck Filter Cloth; Filter Press Solutions

Contact M.W. Watermark to discuss your filter press “filtering” challenges with our Sales and Service Team.

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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.

© 2019 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

Produced Water: Understanding Fracture Fluid

A Closer Look at the Fluid Utilized in Hydraulic Fracturing

Fracture fluid is used during hydraulic fracturing to create thin hairline fissures in shale rock, through which natural oil and gas can be extracted. This fluid is often a mixture of water, sand and additives specially formulated to keep the cracks open and to transport the proppant successfully. Eventually, this fluid makes its way back to the surface, bringing several contaminants with it. From there, it can be either recycled with the help of filtration equipment from M.W. Watermark™, or disposed of in an environmentally safe way.

M.W. Watermark Manufactures Filter Presses Used in Hydraulic Fracturing Operations; Fracking; Produced Water; Flowback Water; Fracture Fluid

Composition of Fracture Fluid

While the composition of fracture fluid may vary based on the characteristics of the formation, objectives and other factors, it’s typically made of 99% water and sand. The sand helps keep the cracks open. However, it’s also important to keep the wellbore lubricated during this process so that components are pumped to the surface faster, so additional chemicals are added to the mix for enhanced viscosity. Common additives include guar gum, which helps thicken the water to suspend the sand, and surfactant, which is similar to dish soap.

In some cases, unconventional fracturing fluid may be used, such as non-aqueous systems that are oil-based or methanol-based. Every component of the fluid mixture is selected to maximize productivity of the specific hydraulic fracturing operation.

Flowback and Produced Fracture Fluid

While some of the fracture fluid gets absorbed into the rock, about 20-40% of it returns to the surface. It may carry minerals, salt, residue and other contaminants from the ground – in addition to the original fluid additives – with it. When this occurs, the fluid is considered produced water. On any given fracking operation, there can be thousands of gallons of this produced water that companies have to manage. At this point, a filter press can be used to help separate solids from the water so that it can be reused.

M.W. Watermark 1200mm Trailer-Mounted Filter Press Built for Produced Water Recovery; Fracking; Hydraulic Fracturing; Fracture Fluid
M.W. Watermark 1200mm Trailer-Mounted Filter Press Built for Produced Water Recovery

Get Custom-Built Fracking Filtration Equipment

When mining and fracking companies require special filtration equipment to keep their operations clean and efficient, they turn to M.W. Watermark. We specialize in providing custom wastewater treatment solutions, such as filter presses, to suit your specific application. Contact us today to request a quote.

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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.

© 2019 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

 

Mining Filter Plates: Repair vs. Replace

Should You Repair or Replace Your Mining Filter Plates?

A functioning filter press is absolutely essential for the mining of metallic ores and precious metals. If even one component, like the filter plates, isn’t working correctly, contaminants can be allowed to enter our supply of fresh, clean water and soil. These contaminants may include everything from heavy metals and acids to salt and oils, all of which can lead to serious environmental and health consequences. So if an issue does arise with the filter plates, it’s important to address it quickly and correctly.

M.W. Watermark™ offers a wide range of knowledge and expertise on filter press technology and is one of the leading suppliers of filter press plates and other parts. Here are some tips on how to decide whether you should repair or replace your mining filter plates.

M.W. Watermark Offers Mining Filter Plate Repair and Replacement for Filter Presses in the Mining Industry

When to Repair

Because filter plates have to filter substantial amounts of mining slurry, they’re prone to breakage or malfunction. That’s why they need to be inspected and cleaned on a regular basis. Cleaning, in particular, is vital to keeping the filter press in peak condition. Plates have to be thoroughly cleaned after scraping to prevent sludge from lingering in the gasket sealing surfaces. Dirty plates decrease performance and can also cause the sidebars of the filter press to corrode.

If you’re experiencing issues with your filter plates, they may just need to be power washed. However, there could be a broken or worn component that needs to be repaired, like the filter cloth or gasket. If that’s the case, M.W. Watermark can help you troubleshoot and make basic repairs on-site. Check out our free online video tutorials and stock up on any maintenance or installation supplies you may need.

M.W. Watermark offers filter plate repair services or replacement plates for filter presses in the mining industry.
M.W. Watermark offers filter plate repair services or replacement plates for filter presses in the mining industry.

M.W. Watermark Offers Filter Plate Repair Services

However, since mining applications are particularly tough on filter plates, some of the plates in the press may eventually need to be serviced. This is where M.W. Watermark’s filter plate repair services can help you save money before replacement becomes necessary. Our repair services include cleaning, plastic welding, sandblasting and plate packing (replacing rubber gasketing / packing seals / collars). We can even replace the handles on your plates.

M.W. Watermark offers repair services for filter plates from filter presses in the mining industry.
This mining filter plate has been repaired using natural-colored polypropylene for the welds.

When to Replace

Filter plates with significant issues or those that are simply worn out may need to be replaced. It helps to keep spare plates on hand for incidents like this in order to avert serious downtime. But if you do need to order new plates, M.W. Watermark can supply filter plates for many makes and models of filter presses, including Metso®, Larox®, Ishigaki® and IPM® as well as others.

M.W. Watermark Offers Filter Plate Repair Services or Replacement for Filter Presses in the Mining IndustryContact M.W. Watermark

M.W. Watermark is here to help with all your filter press maintenance and service needs. Contact us to speak directly with one of our factory-trained service technicians or to get a quote for spare parts.

 

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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.

© 2019 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

Best Practices for Dealing with Swarf Slurry in Glass Fabrication

Swarf slurry, the semi-liquid mixture left behind after the glass fabrication process, presents challenges for shops. It can’t simply be dumped due to strict EPA regulations, nor can it be reused until it’s been properly treated.

After many years of solid-liquid separation experience across multiple industries, including glass fabrication, M.W. Watermark™ has developed a system for dealing with glass wastewater that benefits shops in more ways than one.

Challenges with Swarf Slurry

There are several individual processes involved in glass fabrication that generate wastewater. These often include:

  • CNC Work Centers
  • Waterjets
  • Edgers / Grinders
  • Beveling and Mitering
  • Drilling, Sanding and Milling

This wastewater is made up of water and fine suspended particles. The good news is that the water can be reintroduced back into the fabrication system. However, it must first undergo a filtration process to separate the water from the solids.

This is because these contaminants can actually wreak havoc on the shop’s equipment, causing damage and clogged pipes. As a result, shops may be faced with significant repairs and downtime. So, the question remains of how to best filter and treat the slurry.

M.W. Watermark Manufactures Filter Presses for Glass Fabrication Wastewater Recycling; Swarf Slurry Water Treatment

Glass Wastewater Solutions

M.W. Watermark has developed a glass wastewater treatment recycling system to deal with the swarf slurry. Here’s a breakdown of how it works.

  1. Wastewater is pumped from sumps to a swarf slurry holding tank.
  2. Slurry pump moves it from the tank to a filter press.
  3. Filter press filters the water, leaving behind a filter cake.
  4. Clean water moves to a filtered water tank.
  5. Clean water is pumped back into the glass fabrication system for use in grinding, beveling, mitering, drilling, sanding and milling.

Recycling the slurry is ideal because it helps cut costs on water and sewer bills and offers a more convenient solution for glass fabrication shops. Plus, it helps conserve the earth’s water supply in compliance with government regulations.

M.W. Watermark Manufactures Filter Presses for Glass Fabrication Wastewater Recycling; Swarf Slurry Water Treatment
M.W. Watermark Manufactures Filter Presses for Glass Fabrication Wastewater Recycling

Learn More

If you’re looking for better ways to deal with swarf slurry from your glass fabrication process, contact M.W. Watermark. We can help you create and install a filter press system that meets the unique needs of your business. You can even keep your existing tanks and pumps if needed.

Also, visit our Glass Fabrication Wastewater Recycling web page to learn more about utilizing filter presses for treating swarf slurry.

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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.

© 2019 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

Water Filtration and Reuse in the Concrete Industry

Over the past 15 years, M.W. Watermark™ has seen the need for concrete wastewater recycling technologies grow firsthand. As environmental regulations and overheard costs continue to place pressure on ready-mix concrete companies, more and more of them consider wastewater management not just a priority, but a necessity. From cleaning the inside of a concrete truck’s drum to concrete coring, floor polishing, cutting, grinding and more, wastewater treatment equipment, including filter presses, are now being used for numerous applications within the industry.

Wastewater Continues to Be an Ongoing Challenge

High volumes of water are required to keep the concrete industry running. In fact, ready-mix plants produce thousands of gallons of wastewater every single day from rinsing the equipment that’s used to mix, transport and place concrete. However, this concrete washout water is toxic to the environment, so much so that the Clean Water Act, among other regulations, places strict limitations on how washout is collected, contained, treated and disposed of. As a result, wastewater is an ongoing and costly problem for the industry. But thanks to advanced filter press technology, companies are now able to expand their efforts while protecting the environment and saving money.

Slurry Water Filtration Recovery and Reuse

A filter press makes it easy to separate solids from water. In the concrete industry, this means a facility can recycle and reuse the clean filtrate over and over, instead of having to waste gallons of fresh water every day. It also helps keep contaminated water out of the sewers, ground, lakes and rivers in order to comply with local and federal standards.

With the growing need to reuse water in the concrete industry, filter presses can aid in the following applications:

  • Ready-mix reclaim systems
  • Ready-mix and precast concrete washout pits
  • Block grinding
  • Concrete cutting and grinding
  • And more…

M.W. Watermark manufactures filter presses for concrete wastewater applications

Learn More about Filter Presses for the Concrete Industry

If you’re looking for ways to better manage concrete wastewater at your facility to cut costs and avoid penalties, reach out to the team at M.W. Watermark. View our concrete washout water filtration case study, or contact us today to see how our concrete wastewater recycling solutions can support your business.

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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.

© 2019 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

How Filtration Equipment Benefits the Mining Industry

To deliver the raw materials many industries depend on, mining companies must generate a substantial volume of wastewater that has the potential to contaminate our soil and water. Fortunately, through the help of filtration equipment, like that produced by M.W. Watermark™, the mining industry has been able to adopt more eco-friendly practices. And beyond filtration’s support for greener mining, the financial and legal benefits of filtration technology can’t be denied. Learn more about some of the top benefits of filtration for the mining industry below.

Environmental Protection

Water is essential in the recovery and processing of metallic ore, resulting in a high volume of wastewater that must be handled with care. Wastewater from mining sites may contain any of the following:

  • Heavy metals
  • Acids
  • Bacteria, viruses and other biological contaminants
  • Radiological contaminants
  • Grease, soap, dyes, oils and other organic chemicals
  • Suspended solids
  • And more…

All of these substances can pose a serious threat to our supply of fresh, clean water, our soil and our health. However, by utilizing customized filtration equipment, miners can significantly reduce the effects of said wastewater. Proper filtration technology allows mining companies to remove pollutants before reusing water or reintroducing it into the ecosystem, ensuring they can stay compliant with increasingly strict EPA regulations.

Operational Efficiency

Through filtration, the mining industry is also able to cut back on operational costs and conserve energy. Recent research noted that in 2015, 4,000 Mgal/d (million of gallons of water used per day) were required to support mining activities, revealing the substantial quantity of water required to extract ore and other materials from the earth. In certain situations, however, filter press technology may allow mining companies to recycle and reuse resources rather than constantly relying on clean water. In addition, cleaner mining can result in fewer EPA fines, and a lower need for cleanup initiatives, saving time and money in the future.

A Path to Future Success

As society continues to become more environmentally aware, investing in filtration equipment is a smart move for the mining industry. It demonstrates a commitment to protecting our water and resources, as well as to the overall health of our planet and its people. By preserving earth’s finite resources, everyone can anticipate a brighter, more secure future.

M.W. Watermark 1200mm Filter Press – Built for a Neutralized Mine Wastewater Application.
M.W. Watermark 1200mm Filter Press – Built for a Neutralized Mine Wastewater Application

Request a Quote for Filtration Equipment

Any industry that generates large volumes of wastewater can benefit from investing in proper filtration methods. Contact M.W. Watermark, the experts in industrial and municipal wastewater treatment equipment, to learn more about mining industry filtration filter pressesfilter cloths and more.

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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.

© 2019 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

M.W. Watermark™ Now Offers Rebuild Kits for Filter Press Hydraulics

M.W. Watermark™ now offers complete rebuild kits for 630mm and 800mm filter press hydraulic systems.

Our kits are designed to retrofit filter presses with air-operated hydraulics from both M.W. Watermark and many other manufacturers.

Oftentimes, a single hydraulic system component will need to be replaced due to normal wear and tear.

However, if more than one part is not functioning correctly, or if your filter press is in need of a rebuild, then our comprehensive retrofit hydraulic kits may be the ideal solution.

Either way, we understand you can’t afford much downtime, and our experienced staff can work with you to help troubleshoot your filter press hydraulic challenges to find a solution.

We also have factory-trained field service professionals that can visit your site for repairs and installation.

Download our Hydraulics Rebuild Kits Brochure.

M.W. Watermark Hydraulics Rebuild Kits Brochure - Thumbnail Image

Visit our Hydraulic Systems and Controls webpage.

Contact M.W. Watermark today to learn more about retrofitting your filter press hydraulics.

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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.

© 2018 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.

New and Improved: M.W. Watermark™ AFPCS

In addition to automatically increasing the feed pump pressure during the filtration cycle, the new and improved M.W. Watermark™ Automatic Feed Pump Control System (AFPCS) also controls air-blow even-fill manifolds with the option to control double air-blow. This effectively combines multiple filter press functions in a simple control box – for a cost effective solution that is also expandable.

M.W. Watermark AFPCS Controller - New and Improved - November 2018
Digitally Programmable Controller

How the AFPCS Maximizes Filtration Efficiency

The M.W. Watermark AFPCS is used in conjunction with air-operated diaphragm feed pumps to automatically increase the feed pump pressure during the filtration cycle. High initial feed pump pressures can build a very tightly packed, impermeable layer of solids on the filter cloth, restricting the flow of slurry, and increasing filtration cycle times. Reduced initial feed pressure allows a soft layer of slurry particles to be deposited on the filter cloth. Because this layer becomes the filtering media, filtration of the incoming slurry is enhanced.

M.W. Watermark AFPCS Controller on Electrical Box - New and Improved - November 2018
M.W. Watermark Filter Press with AFPCS

The AFPCS automatically increases the feed pressure in four stages throughout the fill cycle. These stages and pressures are fully adjustable to suit the type of slurry and the solids concentration. Cycle completion is determined either by adjustable times (feed by time) or by monitoring the feed pump flow sensor (feed by flow).

M.W. Watermark AFPCS Pump Control Mounted to Filter Press
AFPCS Pump Control Mounted to Filter Press

The AFPCS also incorporates a low hydraulic pressure safety shut down device. If insufficient hydraulic clamping pressure is present, the AFPCS system will not start, or shuts down, eliminating possible leaking from between the filter plates and the potential to start the feed pump when the press is not fully closed and clamped. The AFPCS features power ON, START cycle and STOP cycle functions. The controller also indicates when the filtration cycle is complete.

The pump kit includes the pump air pressure regulator, 20-meter cables, 5-foot pump air connection hose, and 1/2″ & 3/4″ NPT pump air connection adapters.

M.W. Watermark AFPCS Pump Control Kit
M.W. Watermark AFPCS Pump Control Kit

Features

M.W. Watermark New and Improved AFPCS Features List

Key Takeaways

Automatic feed pump controls allow your filter press to run at its optimum efficiency creating dryer filter cakes, recovering more product and reducing filtration time, and increasing the life of your filter cloths and feed pumps. The new and improved M.W. Watermark AFPCS now effectively combines multiple filter press control functions in a simple control box.

Download our new AFPCS overview document.

Visit our Filter Press Controls webpage.

Contact M.W. Watermark today to learn more about filter press controls and if an AFPCS is appropriate for your dewatering project.

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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.

© 2018 M.W. Watermark, L.L.C.
M.W. Watermark is a trademark owned by M.W. Watermark, L.L.C. All rights reserved.
Any third party trademarks referenced on this site are the trademarks of their respective owners, and M.W. Watermark makes no claim to such marks and is not affiliated with such companies.