Tag Archives: Filter Cartridge

Review our articles on the benefits and applications of various filter cartridges.

Water Filtration Equipment Ensures a Smooth Operation

Filtra-Systems is a leading expert in the field of industrial water filtration solutions. With more than 30 years of experience installing waste water filtration systems, we know what it takes to ensure that our filtration systems operate smoothly without excess maintenance. We provide some of the highest performing waste water filters on the market, and we also ensure that you have a reliable source of bag and cartridge filters to minimize downtime.

We Have a Waste Water Filter Solution for Your Needs

Filtra-Systems makes use of some of the most advanced filtration systems, including our patented STiR technology, to ensure that the filter media in your systems is left as clean as possible after every backwash cycle. We also offer a walnut shell media filter option that separates suspended solids and oil from industrial waste water. Walnut shell media offers an advantage over other filter media such as anthracite, sand media, and activated carbon, as walnut shells are much more resistant to media fouling. Meanwhile, other filter media has a more difficult time completely fluidizing during a backwash cycle. The STiR has been proven to completely fluidize its bed during every backwash cycle.

A Wide Selection of Bag and Cartridge Filters for Every System

Filtra-Systems is about more than just offering cutting edge, high-performance waste water filters. Our complete line of bag and cartridge filters features a wide selection of different filter media to offer flexibility, and allow us to meet your water filtration needs. We offer polyester, polypropylene, nylon monofilament mesh, oil absorption, and activated carbon filter bags to polypropylene, nylon, and polyester cartridge filters available in several different micron ratings, our bag and cartridge filters offer the versatility you need for your filtration system. Additionally, our bag and cartridge filters are rated to as high as 338 F, ensuring smooth operation at whatever temperature your system requires.

Interested in learning more about our waste water filters or our bag and cartridge filter solutions? Contact Filtra-Systems today to have your questions answered about you can ensure that your own water filter system runs smoothly.

How Filtra-Systems’ Turnkey Industrial Water Filtration Solutions Eliminate Waste

Our industrial water filtration solutions work in a variety of ways to eliminate waste from your wastewater and groundwater. These technologies are used by industries across the globe to filter their water, with Filtra-Systems offering a selections of products to choose from based on your needs.

We offer specialized industrial water filters and products to enhance the efficiency of your systems. More importantly, Filtra-Systems also designs and ships industrial water purification systems across the globe. These specialized systems are customized for each of our clients.

Some of these technologies and industrial water purification systems include:

Bag and Cartridge Filters

STiR Industrial Water Filter

Walnut Shell Media Filter

Water Filtration Solutions

Filtra-Systems offers proprietary water filtration solutions for a variety of needs. Our Bag Filter Housings, for instance, can be used for an array of applications including brewing, coolant filtration, injection water, and more. Our Cartridge Filter Housings fit multiple cartridge types, including double open ended (DOE), Type 222, and Type 226 (sanitary).

We offer effective industrial water filtration solutions as well, which assist with the removal of suspended oils and solids like our STiR Industrial Water Filter. In fact, the STiR removes up to 99% of suspended solids and insoluble carbons under normal operating conditions. The smallest vessel available processes 50 gpm, and the largest can process up to 6500 gpm. STiR filters are shipped pre-assembled and skid mounted. This is just one example of a turnkey solution that Filtra-Solutions offers our customers.

With a backwash modeled on a Continuous Stirred-Tank Reactor, our Deep Bed Walnut Shell Media Filter is another example of a product we designed for maximum efficiency in eliminating waste from your system. This filtration system is much more effective than traditional sand filters for the removal of oil & grease, making it one of the most efficient systems on the market.

If you’d like to learn more about addressing your industrial water filtration needs, contact us today to speak with a member of our team.

Advantages of Industrial Cartridge Filters

When searching for a disposable filter for your system, there are two different types to consider: cartridge filters and bag filters. Bag filters are made of several materials and are generally considered to be surface filters, while cartridge filters can be either surface or depth filters. The big questions is, what type of filter best suits the needs of your company? Consider the information below to help with the selection process. Keep in mind, every solution is different, and it is possible that your company may require more than one piece of equipment for efficient filtration.

What Are You Trying To Filter?

This question is crucial, as the type of contaminant being filtered can be stopped more efficiently by one type of filter than another. For example, most cartridge filters are going to be very effective against very small contaminants, at a concentration of less than 50 ppm. These filters will be effective against fine contaminants but may not be as efficient when filtering larger particulate, at higher concentrations. Filtra-Systems industrial cartridge have a high contaminant removal rate. These cartridges have very fine, highly concentrated fibers on the inside of the cartridge, and larger fibers with more porous openings on the outside of the cartridge to catch a large amount of contaminants.

How Do You Want To Filter

How much space needs to taken up by the filter? To process larger flow rates, larger filters housings are needed. Alternately, a larger filter housings can be installed in applications with low flow rates, so that the filter will not need to be changed as often. Two different cartridge filter designs are offered: depth and surface. A depth filter looks like a block of material, and catches material throughout the cartridge. A surface filter will typically have a pleated material, and only catches solids on the outer surface. These are typically absolute rated filters (catches 99.5% of contaminants at a given micron rating) while depth filters are nominally rated.

The Advantages

Overall, depth cartridges have the advantage of thickness and depth, allowing for more material to be caught by the filter. These cartridges are also easily disposable and are easily replaced. Contact Filtra-Systems today to determine which cartridge filter is right for you and for information on our standard and customized industrial filtration solutions.

Improve Purity and Reduce Operating Costs with our Bag and Cartridge Filters

Companies looking to improve their purification processes and who wish to reduce operating costs can utilize advanced technology through Filtra-Systems’ bag and cartridge filters. Our bag and cartridge filters are effective and uniquely formulated to help companies meet their operational needs. These filters can be implemented in a variety of ways depending on the needs of your business. This article reviews what you need to know about our bag and cartridge filters.

Companies Can Save with a Wide Range of Filter Options

Filtra-Systems offers a unique range of filters: there are single, multiple, duplex bag filter housings, as well as filter bags for various end-user applications. Cartridge filter housings and replacement cartridges are also available, and they are popular products that offer lasting results. Cartridge filters developed by Filtra-Systems process between 1 and 1200 gpm, and larger units can be built to order. Cartridge filters can be conveniently disposed of by throwing away (depending on the material they are removing).

Filtra-Systems offers an assortment of filter bags with our advanced technology, including nylon monofilament mesh, activated carbon, and polyester (needle felt) bag filters. There are also uniquely designed filter bags for oil absorption and removal. These filters trap and remove elements such as acid, waste, and other hazardous materials, and our filter bags are highly efficient, so they last. Fiber migration and material bypass are minimized.

Our Bag Filter Housings are Engineered for Multiple Industrial Filtration Applications

Filtra-Systems engineers a line of products that includes filter housings for different applications. Carbon steel, 304 stainless steel, and 316 stainless steel housings are all kept in stock. With over 30 years of experience, we can meet the unique needs of customers for applications such as brewing, biodiesel production, coolant filtration, and more. Our housing equipment is designed to have several applications. Some housing units hold one filter while others can hold a few. Housings equipment options are suitable for applications with high pressure, high flow rates and those simply with higher demands. Dual and individual operation options are also available.

Cartridge filter housings are an additional option. Cartridge filter housings are commonly used in industries relating to food & beverage production and cosmetic industries, to name a few. These options offer quality filtration needs while meeting industrial and environmental standards. Our purification options allow customers to stay in control of operating costs while maintaining energy efficiency. To speak with Filtra-Systems about your filtration needs, contact us today, and stay tuned to our blog for more on saving money with our customized filtration solutions.

Filtra-Systems’ Advanced Technology is the Most Efficient Industrial Water Filtration Solustion on the Market and Here’s Why

Finding the right industrial water filtration solution for your company can be a challenging and time consuming process. There are various options out there for water treatment solutions, and it is important to find a company that understands your needs. There are many things to consider when narrowing down your search and reviewing potential industrial water filtration companies. For example, a business must consider contaminants and their size, filtration rate, and how the water will be used. Because Filtra-Systems has years of experience and a unique understanding of industrial water filtration solutions, we know our advanced filtration technology is the most efficient solution on the market.

Filtra-Systems Specializes in Multiple Types of Filtration

Filtra-Systems has provided a broad range of coolant filtration and industrial water filters for over 30 years, and our company offers a diverse line of water purification and filtration services and products incorporating the latest technologies. We understand important details of the development process, and have a wealth of experiencing in engineering products and application testing, which help us create custom solutions for our customers. As an industry leader in water purification solutions, we provide separation technologies to remove various forms of contaminant, including oils and solids. Our separation technologies allow for efficient water usage while simultaneously meeting disposal and recycling standards.

Filtra-Systems’ Technologies Help Companies Reduce Costs

Our innovative technologies introduce new ways to purify water for industrial facilities across the country. For instance, one of Filtra-Systems’ specialized tools, the automatic filter press, offers unique benefits, including reducing maintanence costs. Other water filters can reduce disposal costs, or even allow for reuse of process water. Many other cost benefits can be achieved through the implementation of a filter system.

Filtra-Systems Offers a Wide Selection of Industrial Water Treatment Equipment

Filtra-Systems provides different filter systems that allow for efficient usage of water in various industries. Each filter is custom-designed to remove specific contaminants to suit your company’s operational needs. Cartridge filters, filter presses, bag filters, and walnut shell filters are some important filter options, and each solution is truly customizable for each of our clients.

The Importance of Measuring Pressure Drop

One of Filtra-Systems’ objectives is to help other companies improve their operational processes by efficiently filtering industrial water. Two solutions we offer our customers, bag filters and cartridge filters, are used in a wide range of industrial processes by companies in varying industries. Even though these filtering solutions are ubiquitous throughout industry, too many organizations neglect or improperly maintain them.

The Negative Effects of Poor Maintenance

Poor maintenance of filtering systems has a measurable adverse effect on business. One of the most overlooked aspects of proper upkeep is tracking the pressure drop across the filter housing. Both bag and cartridge filters are usually sized so that the pressure drop with clean elements is less than 1 psi. As the filter media collects dirt, sediment, and other contaminants, the pores in the media become clogged. The initial result of this is a less efficient system due to the clogged media’s restricted flow and increased pressure drop across the media. The differential pressure increases as more and more material is collected.

If left unchecked, the elements have the potential to rip, leading to a failure in filtering incoming fluid. Not only will no filtration occur, but previously captured contaminants will also be released. The failure of an operation’s filtration system can cause the entire operation to come to a halt, something every business wants to aviod. This can of course lead to missed deadlines and disappointed customers. Such negative effects are entirely avoidable if the proper measurement of pressure drop is observed.

How to Measure Pressure Drop

To prevent bags and cartridges from failing, the differential pressure across the filters should be tracked. This can be done by either using two pressure gauges (one upstream of media, one downstream), or a single differential pressure gauge. A typical bag will need to be replaced when the pressure drop reaches 10-12 psi, and most cartridges need to be changed when the pressure drop reaches 15-35 psi. Following these simple rules ensures that both bag and cartridge filters will continue to operate correctly.

Three Benefits of Wastewater Filtration

Wastewater filtration is a prudent practice for industrial companies, as it eliminates contaminants and other harmful substances from water and allows for proper disposal of those contaminants. In addition to the savings from water costs, it also has environmental implications, including reducing pollutant emissions. This reduction of pollution protects water supplies and other natural resources. Industrial plants across the country can benefit from flexible wastewater filtration solutions to make their commercial maintenance more efficient, and the following benefits are a direct result of applying an effective wastewater treatment solution.

Save On Expenses

In the past, companies could simply dump their waste into the nearest body of water.  Times have changed, and in many cases today simply disposing of untreated wastewater either into a water source or down the drain will incur heavy fines. By utilizing wastewater treatment solutions, this water can be reused, reducing your average expenses and transforming your wastewater into a money-saving asset instead of a burden. Also, fully automated solutions, like our STiR filter, reduce labor and decrease disposal costs to increase your bottom line.

Environmental Factors

Environmentally concious wastewater systems ensure that your company remains compliant with all relevant pollution laws, and does not harm the environment. By repurposing tainted water and turning it into something of value to your company, you remove the need for long distance transport and other wasted actions. Instead, you convert wastewater into a useful resource. These wastewater treatment systems also reduce your water consumption and discharge and produce minimal emissions compared to other systems.

Flexible Systems

Wastewater filtration provides flexible systems for water purification. As burgeoning technologies become available, you can integrate new solutions into your wastewater treatment systems to improve efficiency. Wastewater filtration is a scalable resource for commercial applications, which maximizes cost savings and maintains environmental compliance over time.

For more information on integrating a wastewater filtration system into your commercial business, contact us today, and stay tuned to our blog for in-depth articles on industrial filtration solutions.

Types of Industrial Water Treatment Equipment

Industrial water treatment equipment comes in a variety of implementations, all designed to suit particular operating needs. Filter presses, bed filters, cartridge filters and bag filters all excel in their intended applications. We’ll look at each type of filter and examine what applications it is most appropriate for below.

Filter Presses

Where most industrial water treatment equipment is designed to remove solid material from water, filter presses are designed to remove water from the solids. Filter presses are ideal for any filtration application where enough material needs to be removed so that more conventional filtration methods would be ineffective. A filter press operates, as the name implies, by exerting physical pressure usually in the form of either air or a water-filled diaphragm on a slurry mixture and extracting the moisture. The remaining cake of material is then disposed of.

Bed Filters

Bed Filters are filters with a bed of material (typically crushed walnut shell, sand, anthracite or activated carbon) that removes contaminants. Material is collected throughout the depth of the bed, allowing large amounts of material to be collected before a backwash cycle is initiated. Inlet water pumps through the filtration medium, which collects and suspends contaminants. Once the medium is saturated with contaminants, a backwash cycle is initiated. The filtration medium is fluidized and washed. This industrial water filtration method cleans the medium and readies the filter for use. This reuse of the filtration medium minimizes waste associated with the process.

Cartridge Filters

Cartridge filters are disposable, replaceable, self-contained filtration units. They consist of a central perforated core wrapped in layers of filtration material. Inlet water is pumped in through the top of the filter core, and passes through the walls of the filter. Contaminants can be caught throught the depth of the filter cartrige, which allows individual cartridges to achieve very high filtration efficiencies. Cartridge filters are typically used where high purity water is required.

Bag Filters

Bag filters are similar to cartridge filters in that they are also disposable and replaceable. Bag filters are shaped like a large sock, and are sometimes called sock filters or filter pots. They catch contaminants on the surface of the bag, and are typically used as a low cost option to remove particulate from wastewater streams.

DOE Cartridge Filter

A Guide To Different Types Of Industrial Cartridge Filters

With the vast array of industrial cartridge filters available on the market today, it can be difficult for an engineer to figure out what shape, size, and type is right for his or her specific filtration need.  The fact that most cartridges have complicated, jargon-filled names like “2.5 DOE” and “Type 226 Option G” can add another layer of confusion to the decision making process.  In a continual effort to educate our customers and provide them with information that is applicable to their responsibilities, we have created this guide to clarify cartridge filter terminology and hopefully simplify your business’ ordering and re-ordering process.

DOE vs. SOE Cartridge Filters

One of the most common and simple classifications of cartridge filters is as either DOE or SOE.  They both have their own advantages and disadvantages:

  • DOE – The most common filter cartridges found are DOE, or Double Open Ended.  These cartridges have no built in seals on either end, thus the name.  Instead the filter cartridge housing is relied upon to seal one side and stop contaminants from bypassing the cartridge.
  • SOE – As the name indicates, Single Open Ended cartridges have one end sealed.  This seal is usually accomplished by using a polyporpylene cap.  By using a cap on one end, filter bypass is impossible, so systems that require higher purity filtration typically implement this type of cartridge filter.  The higher cost associated with the end cap prevents this type from being used in general applications.

Cartridge Filter Naming Terminology

In addition to the SOE and DOE divisions, industrial cartridge filters can be named by type, function, or after a component of the filter.

  • Type 222 – This type of filter is almost always SOE, utilizing a cap on one end.  They contain double gaskets that seal against the cartridge filter housing to provide better bypass protection than a typical DOE cartridge.
  • Type 226 – Also known as sanitary cartridge filters, Type 226’s have double gaskets which are similar to the Type 222.  Locking fins are included with this type of cartridge, which ensure proper installation of the filter.  When installing this type of cartridge into the sanitary cartridge filter housing, it must be properly lined up with the opening and twisted as it is pushed in.  This ensures a full lock and proper bypass protection.
  • Flat End – Typically used with DOE and Type 222 compatible cartridge filter housings, flat end cartridges are SOE with a flat plastic cap used for the seal.
  • Spear – An SOE cartridge with a pointed cap instead of a flat one.  It utilizes a bracket to eliminate the ability of the cartridge to sway, allowing it to maintain a seal.  Type 226 cartridges may also have this end configuration.
  • High Flow Cartridges – Designed for high flow rates, these cartridges have a much larger surface area than standard cartridges.  Most are 6.5″ diameter by 40″ long with a maximum flow rate of 350 gpm, whereas standard 2.5″ diameter by 10″ long cartridges have a maximum flow rate of 5 gpm.

Advantages Of Walnut Shell Media

Our Walnut Shell Media Filter has a variety of advantages over other options in the industrial filtration space, especially when filtering oil and total suspended solids (TSS).  Because it is a backwashing filter, Walnut Shell Filters not only are much better filters, but are more efficient in many processes.

  • Hydrocyclones are often used for removing oil from water, but will not fully polish the water.  For example, oil droplets smaller than 20 micron are typically not removed by hydrocyclones.
  • Cartridges and bags are also frequently used, but must be disposed of.  Maintenance personnel are also required to change the filter media when it becomes plugged.  Increasing restrictions on disposal in certain industries have also led to skyrocketing disposal costs.

How Backwashing Filters Work

When compared to hydrocyclones and disposable media filters, backwashing deep bed filters have many distinct advantages.  Contaminants are captured by a granular media bed and then removed by an efficient tortuous path through the media bed.  After the bed becomes full of contaminants, it is then backwashed, which cleans the bed without incurring media disposal costs.  For the filter to operate at a high efficiency over a long period of time, all contaminants from the bed must be removed during the backwash.

Better Filtration

One of the advantages of walnut shell media is its superior filtration of wastewater.  For example, Walnut Shell Filters will typically remove 95% of solids at 5 micron, and 90% of suspended oil.  Walnut shells have a natural affinity for oil, causing it to bond to the surface of the media.  Unlike in sand filters, whose captured oil films over the surface, captured oil remains as droplets.  These absorbed droplets will then contact smaller droplets, which coalesce onto the larger droplets and increase the removal rate of small particles over time.  That’s why black walnut shells have an oil absorption capacity that is 2-3 times that of sand.

Improved Efficiency

One of Filtra-Systems’ goals is to provide industrial filtration solutions that can improve a company’s operations in multiple domains.  Systems that require less maintenance not only help reduce upkeep costs, they also help to ensure that needless interruptions of operations that can have a negative impact on a company’s bottom line do not occur.  That’s why our Walnut Shell Filters have beds that don’t require replacement for the entirety of the product’s life.  Because walnut shells are preferentially wetted by water, oil is easily scrubbed from the shells during a backwash.  Black walnut shells (as opposed to English) have a high modulus of elasticity, which explains why the beds don’t need to be replaced.  The expected yearly attrition rate is 2%, which is much lower than English walnut shells, pecan shells, and other types of media.

Likewise, these filtering systems need less floor space in the factory to operate, freeing up room for different machinery.  Walnut shell filters are typically sized at 10-12 gpm/ft2, which is a greater flux than completing media filters.  The higher flux means smaller filter housings can be used, which is what specifically translates to more floor space for customers.

Less water required to regenerate the bed is another benefit customers enjoy.  The flux required for fluidization of the bed is only 4.5 gpm/ft2 (based on a clean media bed, oil and solid saturation will increase this requirement), which is significantly lower than competing technologies.

Known Issues Of Sand Filters

To those who have had the misfortune of operating a sand filter, no explanation is needed for the colloquial term “mudball.”  To the uninitiated, mudballs form when sand filters are exposed to oil that results in an oil film across the sand.  this film prematurely clogs the filter, drastically reducing the system’s efficiency.  The plugged bed has a decreased filtration area, and will backwash more frequently.  Even after a backwash, the bed remains unclean because the backwash water does not penetrate the film, and channels around the mudballs.  As the problem persists the bed will inevitably need to be replaced, a manual operation that requires personnel to dig out the clogged bed.  This adds to unnecessary costs, both in paying trained personnel, as well as system downtime.

Which leads us to pricey filter replacement and disposal.  Generally, sand filter beds need to be replaced every five years.  However, with regular exposure to oil, replacement time can be reduced to as frequently as every six months.  An alternative to filter replacement is to clean the filter bed, a procedure that involves soaking the bed with a condensate, or a light oil.  The time consuming nature of this process means that sand filter users typically choose to replace the bed instead.  Sand is also an OSHA dusting hazard, and handling sand to replace the bed can result in exposure to plant personnel.

Sand filters typically use an air scour to remove oil and solids from the media bed.  Drawbacks to this technology include:

  • Incomplete fluidization of the media bed
  • Extra piping and valves required upon installation
  • Larger compressor and air regulator are needed
  • Possible installation of a vapor recovery and processing unit (VRU)

The compressed gas needed for this operation may also change the electrical classification of the area to Class 1, Div 1, increasing electrical costs for all process equipment nearby.

The backwash volume required for sand filters can be up to 5 times more than walnut shell filters.  Sand filters are designed at 6 gpm/ft2, and the flux required for fluidization of the bed is 12 gpm/ft2 (based on a clean media bed, oil and solid saturation will increase this requirement).

Known Issues Of Anthracite

Another common media filter is anthracite.  Anthracite filters usually have three layers of differently sized media: a top layer collects coarse contaminants, the second layer collects smaller particulate, and the third layer is the final polish.  Unfortunately, substantially more water is needed to clean anthracite filters.  This is because the backwashing process requires a subsurface wash to break up any waste before the standard backwash.  In fact, an anthracite filter may require seven times more water to backwash than a comparable walnut shell filter!

Additionally, upset conditions can cause the media to mudball.  The attrition rate for anthracite is much higher than walnut shells, and the media generally needs to be replaced every year.  Anthracite filters are designed with a flux of 4-4.5 gpm/ft2.

Filtration Design Flux

Backwash Fluidization Flux

Backwash Volume (compared to WSF)

Walnut Shell Filter

12 gpm/sqft

4.5 gpm/sqft

1X

Sand Filter

6 gpm/sqft

12 gpm/sqft

5X

Anthracite Filter

4 gpm/sqft

N/A

7X