High-efficiency multi-cell filtration with smart self-cleaning and stable effluent quality.

Principle of Filtration

Filtration State:

During normal filtration, raw water enters the system and is evenly distributed across 

each of the four (4) standard filter cells via a specially designed water distributor. 

The water flows in a laminar pattern through the filter media bed—composed of high-purity 

quartz sand or garnet—ensuring optimal contact time and trapping efficiency.

 Suspended solids and particulates are retained within the media layer. 

At the bottom of each filter cell, a network of uniformly spaced water collectors draws 

the clarified water evenly, enabling high-flow-rate advection filtration without compromising 

effluent quality.

Backwash State:

As contaminants accumulate within the media bed, the internal pressure differential

 between the inlet and outlet gradually increases. Once this pressure head loss reaches a 

preset threshold, the system’s built-in constant-pressure control unit automatically initiates 

the backwash sequence. The hydraulic valve sequentially redirects water flow to isolate 

and backwash each standard filter cell individually—ensuring thorough cleaning with 

minimal water usage and no media loss.

During backwashing, the filtration process remains uninterrupted. Only the cell undergoing 

backwashing is temporarily taken offline; all other cells continue to filter normally.

 A portion of the clean, filtered water from the online cells is used as the backwash source, 

while the remainder is delivered to the end-user. Backwash wastewater is discharged 

through the dedicated outlet of the hydraulic valve. The advanced collector design promotes

 media-to-media friction during backwashing, significantly improving cleaning efficiency

 and reducing the volume of clean water required—typically less than 3 m³ per cycle, 

with a backwash duration of 2–3 minutes per cell. Once the pressure head returns to

 normal levels, the system resets and prepares the next cell for its scheduled backwash cycle.

Product Features 

1. Compact Footprint & Flexible Installation

      Space-saving, lightweight design supports both indoor and outdoor installation—

no civil works required. Adaptable to layered or elevated mounting, offering excellent 

corrosion resistance and long service life.

2. High Filtration Efficiency

      Normal filtration velocity reaches approximately 40 m/h, with peak performance up 

to 60 m/h depending on influent quality. Filtration accuracy can capture particles smaller

 than 0.10 mm, and effluent turbidity can be reduced to below 0.5 NTU. Modular design 

allows system expansion from 30.6 m³/h up to 2,500 m³/h.

3. Intelligent Automated Backwashing

      Fully automatic control system monitors differential pressure and initiates backwashing 

without manual intervention. The system adapts dynamically to fluctuating suspended 

solids loads, ensuring consistent performance.

4. Uninterrupted Water Supply

      Backwashing occurs on a cell-by-cell basis while the rest of the system continues 

filtering—guaranteeing 24/7 water availability.

5. Superior Water Distribution & Collection

      Patented flow distribution and collection technologies maintain laminar flow throughout 

the filter bed, keeping the media surface level and stable, which directly contributes to

 consistent effluent quality.

6. Premium Filter Media Options

      Utilizes refined quartz sand or garnet as the filtration medium. Homogeneous media

 with particle sizes as fine as 0.16 mm can be selected based on specific water quality 

requirements.

7. Low Operating & Maintenance Costs

      No additional backwash pump or booster pump is required. The sequential backwashing

 design eliminates peak power demand. Compared to conventional sand filters, 

the required pump head is reduced by 6–7 meters, delivering significant energy savings over

 the equipment lifecycle.

Application Scope 

· Industrial process water (steelmaking, boiler feed, heat exchanger protection)

· Industrial recirculating cooling water systems

· Raw water treatment (rivers, lakes, reservoirs, seawater, wells, municipal supply)

· Agricultural irrigation (drip, sprinkler, golf courses, parks)

· Food & beverage processing, pulp & paper, pharmaceutical and medical purified water

· Industrial wastewater recycling and aquaculture/water recreation facilities

FAQ (Frequently Asked Questions)

Q1: How does the system maintain uninterrupted water supply during backwashing?

A: The system features cell-by-cell sequential backwashing. Only one filter cell is taken offline

 for cleaning at a time, while all other cells continue normal filtration. A portion of the clean water

 from the online cells serves as the backwash source, while the remainder is delivered to the 

end-user—guaranteeing 24/7 water availability.

Q2: What triggers the backwashing process, and is manual intervention required?

A: The backwash cycle is triggered automatically by the built-in constant-pressure control unit

 when the internal pressure differential (head loss) reaches a preset threshold. No manual 

intervention is needed—the system dynamically adapts to fluctuating suspended solids loads for

 consistent performance.

Q3: How much water is consumed per backwash cycle, and how long does it take?

A: Each backwash cycle consumes less than 3 m³ of water per cell, with a duration of only 2–3 minutes per cell. 

The advanced collector design promotes media-to-media friction, significantly improving cleaning efficiency 

and minimizing clean water requirements.

Q4: What filtration velocity and precision can this system achieve?

A: Normal filtration velocity reaches approximately 40 m/h, with peak performance up to 60 m/h

 depending on influent quality. Filtration accuracy captures particles smaller than 0.10 mm, 

and effluent turbidity can be reduced to below 0.5 NTU.

Q5: What filter media are available, and can they be customized?

A: The system utilizes high-purity quartz sand or garnet as the filtration medium. Homogeneous 

media with particle sizes as fine as 0.16 mm can be selected based on specific water quality requirements, 

offering flexibility for different applications.

Q6: What is the system's capacity range?

A: The modular design allows system expansion from 30.6 m³/h up to 2,500 m³/h, making it suitable

 for both small-scale and large-scale industrial and agricultural water treatment applications.

Q7: Does the system require additional pumps for backwashing?

A: No. No additional backwash pump or booster pump is required. The sequential backwashing design 

eliminates peak power demand. Compared to conventional sand filters, the required pump head is 

reduced by 6–7 meters, delivering significant energy savings over the equipment's lifecycle.

Q8: What installation requirements does this system have?

A: The system features a compact, lightweight design that supports both indoor and outdoor

 installation—no civil works required. It is adaptable to layered or elevated mounting, 

offers excellent corrosion resistance, and has a long service life.

Q9: What industries and applications is this system best suited for?

A: It is widely used across many sectors, including:

· Industrial process water (steelmaking, boiler feed, heat exchanger protection)

· Recirculating cooling water systems

· Raw water treatment (rivers, lakes, reservoirs, seawater, wells, municipal supply)

· Agricultural irrigation (drip, sprinkler, golf courses, parks)

· Food & beverage, pulp & paper, pharmaceutical and medical purified water

· Industrial wastewater recycling and aquaculture/water recreation facilities

Q10: How does the water distribution system ensure consistent effluent quality?

A: The system uses patented flow distribution and collection technologies that maintain laminar 

flow throughout the filter bed. This keeps the media surface level and stable, ensuring optimal 

contact time and trapping efficiency—directly contributing to consistently high-quality effluent.

Q11: What maintenance is required, and how often?

A: Maintenance requirements are minimal. The system's intelligent self-cleaning mechanism handles

 routine backwashing automatically. Periodic inspection of the filter media level and condition is

 recommended, but the homogeneous media bed design minimizes stratification and media loss.

 The low operating and maintenance costs are a key feature of this system.

Q12: Can this system handle fluctuating influent water quality?

A: Yes. The intelligent control system dynamically adapts to changing suspended solids loads by 

adjusting backwash frequency based on real-time pressure differential monitoring, ensuring 

stable effluent quality even under variable feed conditions.