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Filtra Systems -Â Walnut Shell Media Filter
when it comes to reliable and efficient industrial filtration, the Filtra-Systems Walnut Shell Media Filter is the answer! Purpose-built to tackle oily process water and industrial wastewater, this innovative filter system delivers high performance with unmatched efficiency, ensuring clean, reusable water for your operations. As the leading walnut shell filter system manufacturer, Filtra-Systems has developed this sustainable and dependable filter that provides a proven uptime of over 99% , making it one of the most effective and sustainable solutions for industrial filtration challenges.
The Filtra-Systems Walnut Shell Media Filter is designed to remove oil and suspended solids with superior efficiency.
Here’s how:
- Contaminant Removal: As water passes through the media bed, oil and solids are retained efficiently. Walnut shell media behaves like a magnet, removing 95% to 99% of suspended solids and 90% to 99% of hydrocarbons, leaving water exceptionally clean.
- Backwashing Technology: When the walnut shell bed becomes full of contaminants, a powerful patented backwashing system automatically cleans the media bed.
- Rotating Media Scrubbing Assembly: This patented technology fluidizes and scrubs the media bed, achieving complete regeneration of the media during each backwash cycle.
The best part? This entire process requires:
- No chemicals
- No surfactants
- No air sparging cycles
This backwashing approach makes the walnut shell filter not only the most efficient solution but also the easiest to maintain.
The walnut shell media filter offers distinct benefits over conventional filtration systems like sand and anthracite filters. Designed with durability and efficiency in mind, it solves common filtration frustrations while improving operations.
Better Filtration Results- Removes 95% of solids at 5 microns and 90%-99% of insoluble hydrocarbons.
- Captured oil remains in droplets (unlike sand filters, where oils form clogs), enhancing filtration over time.
- The oil absorption capacity of walnut shells is 2-3 times greater than sand media, ensuring optimal performance over a long period without clogging.
- Walnut shell media doesn`t need replacement thanks to its high durability, as black walnut shells have an exceptionally low attrition rate of only 2% per year.
- Unlike sand filters, which require frequent replacement or cumbersome manual cleaning, walnut shell media is sustainable and designed to last the filter’s entire lifetime.
- Walnut shell filters operate at flux rates of 10-12 gpm/ft², which is significantly higher than sand filters (6 gpm/ft²) and anthracite filters (4-4.5 gpm/ft²).
- This results in smaller filter housings, freeing up valuable floor space for other equipment in your facility.
Click here to discover the advantages of a walnut shell media filter
Unlike sand or anthracite filters that suffer from issues like "mudball" formation and high water requirements, the walnut shell media filter offers a more reliable and efficient solution.
- The backwash volume requirement of walnut shell filters is significantly lower:
- Walnut Shell Media Filter: 1X
- Sand Filter: 5X
- Anthracite Filter: 7X
- Walnut shell systems do not require air scour or chemical aids to clean the bed, avoiding problems with incomplete backwashing that plague traditional systems.
Additionally, black walnut shells have a high modulus of elasticity, ensuring the media resists wear and tear over time. This makes Filtra-Systems walnut shell media filters twice as efficient as sand and other mixed-media systems.
If you’ve used sand filters, you’re likely familiar with the issues they cause:
- Mudball Formation: Exposure to oil causes plugging and clogs filter beds prematurely.
- Frequent Replacement: Sand beds often need to be replaced every 6 months to 5 years depending on oil exposure.
- High Backwash Volume: Sand filters use 5X the backwashing water of walnut shell filters.
These inefficiencies lead to costly system downtime, manual labor, and increased operating costs. That’s why more industries are switching to walnut shell technology for industrial filtration.
With over 40 years of experience, Filtra-Systems has solidified its position as the industry leader in walnut shell filter systems. By designing, building , and field-testing solutions for a wide range of applications, we’ve delivered reliable and cost-effective systems to meet customer needs.
Our patented STiR Deep Bed Nut Shell Media Filter technology is based on the kinetic model of a Continuous Stirred-Tank Reactor (CSTR) —the only scientifically proven regeneration technology available today. This design ensures maximum backwashing efficiency, and hundreds of installations worldwide confirm its success.
Rental Options AvailableNot ready for a capital investment? Filtra-Systems offers rental systems that fit into your budget, giving you access to state-of-the-art filtration technology without upfront equipment costs.
When your sand, anthracite, or multimedia industrial water filter system stops backwashing properly, the Walnut Shell Filter will do the job, 100% guaranteed.
Filtra-Systems` innovative STiR Deep Bed Nut Shell Media Filter has overcome the limitations of conventional bed-type industrial water filters by leveraging a maximum efficiency regeneration design.
This media regeneration in our walnut shell filter is achieved using the kinetic model of a Continuous Stirred-Tank Reactor (CSTR).
The CSTR makes backwashing
- The most efficient
- The most powerful
- The most economical
It is the only scientifically proven regeneration technology offered on the market today.
Why Filtra Systems?Designing & building solutions for customers and listening to their feedback for decades has made us the leading walnut shell filter system manufacturer.
With over 40 years of experience in industrial water and wastewater filtration, we`ve engineered, built, and field-tested solutions for customers in a very wide variety of industries.
The Deep Bed Walnut Shell Filter is a proven technology with hundreds of installations worldwide, in a variety of difficult applications.
Rental Systems are available. And, frequently, they fit into your operational budget. No Capital Investments.
When your sand, anthracite, or multimedia industrial water filter system stops backwashing properly, the Walnut Shell Filter will do the job, 100% guaranteed.
In high-volume industrial water and wastewater filtration applications, our Deep Bed Walnut Shell Media Filters are ideal for removing:
- Suspended solids.
- Insoluble hydrocarbons.
Our Deep Bed Walnut Shell Media Filters excel in high-volume water and wastewater filtration applications, including:
- Oily wastewater filtration
- Groundwater treatment
- Cooling water recycling
- Process water filtering and reuse
With their superior performance and efficiency, walnut shell filters achieve up to double the throughput of standard sand or mixed-media filters.
This exceptional filter system doubles the efficiency of conventional systems like sand or mixed-media filters, with performance results that remove:
- 95% to 99% of suspended solids.
- 90% to 99% of insoluble hydrocarbons.
With this superior combination of efficiency, reliability, and no chemical usage, the Walnut Shell Media Filter stands as one of the best-performing and most sustainable industrial water purification systems available today.
Click here to discover why a walnut shell media filter is a great option for you.
Our Walnut Shell Media Filters are available in multiple configurations, ensuring the right filter for your specific operation’s needs:
- High throughput nutshell filters for the purification of oily process water and industrial wastewater.
- Single filtration units are available up to 5,000 GPM (175,000 BWPD).
- Deep Bed Nutshell Filtration Systems give double the throughput of conventional deep bed sand or graded mixed-media filters.
- Vertical Units: Flow rates range from 70 GPM to 2,800 GPM.
- Horizontal Units: Flow rates range from 1,200 GPM to 12,000 GPM.
- We offer ten (10) standard vertical and six (6) standard horizontal Nutshell Filter models.
- Units are pre-assembled at the factory and can be shipped to the job site skid-mounted, ready for installation. Also, larger sizes can be custom-designed to meet your specific project needs.
- Unique to the Deep Bed nutshell industrial water filters is a patented media scrubbing cycle that fully regenerates the media filtration system during each backwash cycle.
- This scrubbing cycle is initiated automatically whenever the filter bed becomes dirt-laden.
- A change in the pressure differential across the filter bed or an automatic preset time signal activates backwashing.
- The current Walnut Shell media design incorporates the high intensity of a mixer to vigorously agitate the media bed during the scrubbing cycle.
- The mixer is combined with the separating efficiency of a rotating backwash scrubber screen to produce the optimum separation of the scrubbed media from the concentrated backwash fluids.