Water Filtration Systems Companies
Filtration system providers spanning media, cartridge, bag, and membrane filters for municipal, commercial, and industrial applications.
152 specialist providers · 14 related · 28 countries
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Specialists in water filtration systems
Providers whose services or self-declared specialties match this category.
BMS SU ARITMA SISTEMLERI A.S.
Türkiye · 51-200 employees
BMS SU ARITMA SISTEMLERI A.S. specializes in manufacturing and integrating water treatment systems, focusing on residential and commercial applications. Based in Türkiye, the company offers a range of products including reverse osmosis systems and point-of-use filters, serving markets in Europe and MEA regions.
Buyer's guide
The buyer's guide to water filtration systems
Specifying Filtration Systems for Industrial and Municipal Applications
Industrial and municipal filtration operates at flow rates and fouling loads that make media selection, backwash design, and pressure drop management critical engineering decisions. Depth filtration using sand, anthracite, or multimedia beds handles high-turbidity streams and pre-treats feed to downstream membrane or ion exchange units. Cartridge and bag filters provide fine polishing but require sizing to realistic flux rates to avoid frequent change-outs. Automatic self-cleaning screen filters and disk filters are increasingly specified for irrigation and process cooling circuits where manual maintenance is impractical.
When evaluating filtration providers, ask how they size their systems: flux rate (m³/m²/h) through membrane systems or empty bed contact time (EBCT) for media beds are the parameters that determine real-world performance. Providers should supply pressure drop curves, backwash water consumption data, and media service life estimates based on your feedwater quality. For municipal projects, verify compliance with state drinking water regulations and whether the provider has experience with required regulatory reporting.
Multi-stage filtration projects often involve multiple subcontractors across civil, mechanical, and controls scopes. Providers who offer a single point of accountability for the full filtration train - from inlet screening through final turbidity monitoring - simplify project management and reduce interface risk. Review each provider's project references for systems comparable in flow rate and source water type to your own application.
Frequently asked questions
What filtration technology is best for high-turbidity source water?
High-turbidity streams above 10 NTU typically require coagulation and flocculation upstream of media filtration to prevent rapid clogging and ensure consistent effluent quality. Dual-media beds (anthracite over sand) provide deeper particle penetration and longer run times than single-media sand filters. For very high turbidity or variable loads, dissolved air flotation (DAF) ahead of filtration removes a significant portion of the suspended load before the filter bed.
How do I calculate the right filter sizing for my flow rate?
For rapid sand filters, design filtration rates typically range from 5 to 15 m/h (surface loading rate). Divide your peak hourly flow by that rate to determine required filter bed surface area, then add redundancy for one vessel out of service during backwash. For cartridge or bag filters, apply the manufacturer's flux rate at your target differential pressure and add at least 25% contingency for fouling between change-outs. A filtration provider should validate these numbers against your specific feedwater analysis.
What is the difference between depth filtration and surface filtration?
Depth filtration traps particles throughout a porous media bed (sand, anthracite, activated carbon), allowing longer run cycles before backwash is needed and handling higher solids loads. Surface filtration captures particles on the surface of a membrane, screen, or filter element and is better suited for polishing relatively clean streams to tight micron ratings. Most industrial pre-treatment trains use depth filtration for bulk solids removal followed by cartridge or membrane surface filtration for final quality.
How often do industrial filtration systems need maintenance?
Media filters running on clean surface water may only require media inspection and replacement every 5 to 10 years, but backwash valve maintenance is typically annual. Automatic self-cleaning filters require periodic nozzle and screen inspections, usually quarterly. Cartridge filters need element replacement based on differential pressure - in high-fouling applications this can be weekly, while in polishing applications it may be monthly or longer. Always specify a Continuous Differential Pressure (CDP) gauge and alarm to avoid breakthrough caused by exhausted elements.
Illustrative scenario · Municipal water treatment works, Yorkshire, UK
A composite drawn from typical projects in this category, not a single client engagement. Figures are indicative.
- Challenge
- A 25,000 m3/day upland reservoir treatment works was producing filtered water exceeding 1 NTU turbidity during storm events, breaching DWI compliance targets and triggering regulatory notices. The existing single-media sand filters were blinding within 8 hours of peak storm inflow.
- Approach
- The provider redesigned the filter beds to dual-media anthracite-over-sand configuration, installed a coagulant dose optimizer tied to real-time turbidity sensors on the inlet channel, and added automated backwash sequencing to prevent simultaneous offline of more than one cell.
- Outcome
- Post-storm filtered water turbidity was consistently below 0.15 NTU across a 24-month monitoring period. Filter run times between backwashes extended from 8 hours to an average of 22 hours, reducing backwash water consumption by 60% and eliminating repeat DWI notices.
Questions to ask shortlisted providers
5
- 01
What surface loading rate (m/h) and empty bed contact time are you designing to, and how do those compare with your reference installations?
These parameters directly determine how the filter performs under peak flow conditions and are often understated in commercial proposals.
- 02
What is your specified SDI or MFI target at the filter outlet, and how do you validate it during commissioning?
For systems feeding downstream RO or nanofiltration, SDI below 3 at the filter outlet is critical to membrane longevity.
- 03
How does the backwash system operate, and what is the backwash water volume as a percentage of daily throughput?
High backwash consumption reduces net output and adds to trade effluent disposal costs; this figure should be explicitly quoted in performance guarantees.
- 04
What media specification (grain size, uniformity coefficient, density) are you using, and what is the replacement interval?
Undersized or mismatched media leads to early breakthrough and media loss during backwash; specification should match your feedwater suspended solids profile.
- 05
Is the filtration system designed to handle the worst-case turbidity event in our historical feedwater data, and do you offer a performance bond against that scenario?
Filters sized only for average conditions can fail precisely when they are most needed, creating regulatory risk.
What drives cost in this category
4
- Media type and depth
- Dual or multi-media beds cost more than single-media sand but extend run times and improve effluent quality, reducing long-term backwash and media replacement costs.
- Backwash system design
- Air-scour assisted backwash systems require blowers and additional controls but use significantly less water than water-only backwash, affecting both capital cost and ongoing operating cost.
- Number of filter cells
- More cells provide redundancy and allow one to remain offline during backwash without reducing throughput, but each additional cell adds vessel, pipework, and valve costs.
- Automation level
- Fully automated turbidity-triggered backwash and dose control systems carry higher upfront instrumentation costs but reduce operator time and improve regulatory compliance consistency.
Key regulations and standards
4
- Water Supply (Water Quality) Regulations 2016
- Prescribes a turbidity limit of 1 NTU at the point of supply, making filter performance directly tied to drinking water compliance in England and Wales.
- BS EN 13452-1
- Specifies performance requirements for drinking water treatment equipment, including filter systems, covering materials, design, and testing criteria.
- DWI Guidance on Cryptosporidium
- Requires that surface water treatment works demonstrate 4-log Cryptosporidium removal, with media filtration playing a key role in the treatment barrier assessment.
- WRAS Approval
- All materials in contact with potable water, including filter media supports and pipework, must be approved under the Water Regulations Advisory Scheme to prevent contamination.
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