Pressure filters
for water treatment.
Continuous operation.
Pressure filters for water treatment with sand, multimedia and activated carbon beds and automatic backwash. The hydraulic design, vessel materials and nozzle system are defined according to the flow rate, water quality and operating pressure.
Robust vessels
Construction designed for pressure, corrosion and service conditions.
Optimised hydraulics
Uniform distribution and low head loss.
Automatic backwashing
Programmed sequences to restore filtration performance.
Instrumentation and control
Integrated pressure, flow, alarms and automation.
Modular design
Scalable configurations tailored to each process.
A filtration solution for every requirement.
We develop pressurised filtration systems tailored to water quality, treatment flow rate and process requirements. We select the filtration media, size the equipment and define the backwash and control systems to achieve stable, efficient operation.
Sand filters
Designed to retain suspended solids and reduce turbidity. A robust solution for drinking water treatment, pretreatment and industrial process water.
Multimedia filters
Combine different filtration media such as anthracite, sand and garnet to use the full bed depth and improve particle retention.
Activated carbon filters
Designed to reduce residual chlorine and certain organic compounds, as well as colour, odour and taste, depending on the characteristics of the water.
Compact and automated systems
Integration of filters, valves, instrumentation and controls into modular systems, with filtration and backwash sequences tailored to the project.
Poor filtration compromises the entire treatment process.
Suspended solids, turbidity and inadequate filtration can reduce plant efficiency, increase maintenance and affect downstream equipment. KEIKEN designs solutions that control water quality and optimise operating conditions, from hydraulic sizing to automatic backwashing.
Filtration tailored to each process.
Our pressure filters are integrated into drinking water treatment, desalination, water reuse and industrial water treatment plants, adapting filtration technology to the conditions and objectives of each application.
Drinking water treatment
Desalination and reverse osmosis
Wastewater treatment and reuse
Industrial processes
Filtration experience demonstrated in real-world installations.
KEIKEN’s experience in water treatment enables us to understand the technical demands of different filtration systems and the importance of selecting the right components for each process.
Everything you need to know about pressure filtration.
What are pressure filters used for?
They are used in drinking water treatment, industrial processes, pretreatment, water reuse and protection of downstream equipment.
What is the difference between a sand filter and a multimedia filter?
A multimedia filter combines layers of different materials and densities to improve retention and extend filter runs.
When is activated carbon used?
When the aim is to reduce chlorine, organic compounds, colour, odour, taste or other adsorbable contaminants.
How is the filter diameter sized?
It is calculated from the flow rate, the filtration rate, the allowable head loss and the operating regime.
How is backwashing designed?
We consider bed expansion, wash flow rate, water availability, drainage and valve sequence.
Can the filters be automated?
Yes. They can incorporate automatic valves, instrumentation, a PLC, a display and filtration and wash sequences.
What construction materials are available?
They are selected according to pressure, corrosion, the water treated, the environment and the project requirements.
Can they be supplied skid-mounted?
Yes. We can integrate filters, pipework, valves, instrumentation and the control panel into a compact solution.
What information do you need to prepare a proposal?
Flow rate, water analysis, target quality, available pressure, operating regime and site constraints.
Do you carry out factory testing?
The scope can include leak tests, functional tests, control tests and assembly verification.
Do you offer commissioning and training?
Yes. We can install, configure, test and train operating staff.
Can you refurbish existing filters?
Yes. We assess vessels, internals, valves, media, instrumentation and control to propose improvements.
We design the filtration solution your plant needs.
Do you need a sand, multimedia or activated carbon pressure filter? Our technical team can help define the best solution based on flow rate, water quality and operating conditions.
We are a B Corp company
B Corp certification independently assesses a company’s environmental and social performance, transparency and legal accountability. For us, it is more than a label: it provides a framework for our technical decisions. Every plant we design is also assessed for its energy consumption, the water footprint it helps reduce and its impact where it is installed.