Three-tank shallow sand filter – auto backwash, space-saving

1. Product Overview

Aite Three-Tank Parallel Shallow Sand Filter is composed of multiple

 standard high-speed sand tank units. Aite Three-Tank Parallel Shallow 

Sand Filter is equipped with a water distributor and a water collector, 

and has a two-way automatic flush valve – enabling multiple standard 

high-speed sand tanks to be individually backwashed one by one during 

normal system operation with fully automatic program control. Aite 

Three-Tank Parallel Shallow Sand Filter offers the advantages of small

 backwash water consumption, convenient equipment installation, 

and easy operation. The device has a high flow rate and requires no 

maintenance.

As a professional manufacturer specializing in industrial water filtration 

equipment, we deliver Aite Three-Tank Parallel Shallow Sand Filter with 

stable performance, reliable construction, and competitive pricing for 

industrial facilities worldwide.

2. Product Principle

Aite Three-Tank Parallel Shallow Sand Filter operates on a proven filtration 

principle. When the system is in the filtering state, pressurized water flows 

into the water distribution system from the inlet of the filter tank and reaches

 the filter material layer evenly. When water flows through the filter material

 layer, suspended matter is retained by the filter material. A water collector 

with a slit at the bottom of the filter evenly collects the filtered clean water 

and flows it out of the filter.

At any time, impurities accumulate in the filter material layer, and pressure

 loss continues to increase. When the pressure difference increases to a certain

set value or reaches the set cleaning time, Aite Three-Tank Parallel Shallow

 Sand Filter automatically switches to the backwashing state. Pressurized 

water enters the filter material layer through the water collection device, 

flushes it, and makes trapped pollutants fall off and discharge from the filter 

system. After backwash has lasted for at least 2 minutes, the valve 

automatically switches the system back to filter state.

3. Product Features

Aite Three-Tank Parallel Shallow Sand Filter delivers superior performance 

through the following key features:

3.1 High Filtration Speed & Low Pressure Loss

Aite Three-Tank Parallel Shallow Sand Filter features high filtration speed 

and low pressure loss – solving the problems of slow filtration speed and 

small flow of ordinary mechanical media filters.

3.2 Modular Setting – Small Footprint, Low Investment

Aite Three-Tank Parallel Shallow Sand Filter features modular setting with

 small footprint, less piping, and low investment. Floor space is reduced by 

more than 40%, and piping work is reduced by more than 50%.

3.3 Multiple Backwashing Options

Aite Three-Tank Parallel Shallow Sand Filter offers manual, semi-automatic, 

and fully automatic backwashing options – meeting different operational needs.

3.4 Flexible Backwash Water Source

Aite Three-Tank Parallel Shallow Sand Filter backwash water source can be 

selected from the system, water tower, or external water source – with automatic 

switching capability.

3.5 Corrosion-Resistant Construction

Aite Three-Tank Parallel Shallow Sand Filter shell and pipes are made of

 carbon steel Q235B, treated with phosphate, and baked at high temperature

 after electrostatic spraying – providing excellent corrosion resistance. 

Stainless steel construction is also available.

4. Technical Specifications

Parameter Specification

Product Type Three-Tank Parallel Shallow Sand Filter

Configuration Multiple standard high-speed sand tank units

Backwash Valve Two-way automatic flush valve

Control Mode Fully automatic program control

Backwash Duration Minimum 2 minutes

Backwash Water Source System, water tower, or external source 

(auto-switchable)

Shell Material Carbon steel Q235B (phosphate + electrostatic spray) 

or stainless steel

Floor Space Reduction More than 40%

Piping Work Reduction More than 50%

Maintenance No maintenance required

Aite Three-Tank Parallel Shallow Sand Filter delivers reliable filtration 

performance across a wide range of industrial water treatment applications.

5. Application Fields

Aite Three-Tank Parallel Shallow Sand Filter is widely used across diverse

 industrial sectors:

Industry Typical Applications

Water Treatment Municipal water treatment and industrial water filtration

Cooling Water Cooling water system filtration

Wastewater Treatment Tertiary sewage treatment and water reuse

Power Generation Power plant water treatment systems

Petrochemical Process water and cooling water filtration

Metallurgy Cooling water and process water filtration

Paper Paper white water filtration

Irrigation Agricultural irrigation water filtration

Aite Three-Tank Parallel Shallow Sand Filter is suitable for a wide range of 

water filtration applications – providing reliable performance across multiple

 industries.

6. Frequently Asked Questions (FAQ)

Q1: What is the Aite Three-Tank Parallel Shallow Sand Filter designed for?

A: Aite Three-Tank Parallel Shallow Sand Filter is designed for high-speed 

water filtration with automatic backwashing – removing suspended matter

 from water for industrial and municipal applications.

Q2: How does the Aite Three-Tank Parallel Shallow Sand Filter work?

A: Aite Three-Tank Parallel Shallow Sand Filter operates by passing pressurized 

water through a filter material layer where suspended matter is retained. 

When pressure loss increases to a set value, the system automatically switches

 to backwashing state to flush trapped pollutants.

Q3: What are the advantages of the Aite Three-Tank Parallel Shallow Sand Filter?

A: Aite Three-Tank Parallel Shallow Sand Filter offers high filtration speed, 

low pressure loss, small footprint (reduced by more than 40%), less piping 

(reduced by more than 50%), and low investment.

Q4: What backwashing options are available for the Aite Three-Tank Parallel

 Shallow Sand Filter?

A: Aite Three-Tank Parallel Shallow Sand Filter offers manual, semi-automatic,

 and fully automatic backwashing options – meeting different operational needs.

Q5: Where can the backwash water source come from for the Aite Three-Tank

 Parallel Shallow Sand Filter?

A: Aite Three-Tank Parallel Shallow Sand Filter backwash water source can be 

selected from the system, water tower, or external water source – with 

automatic switching capability.

Q6: What materials are used in the Aite Three-Tank Parallel Shallow Sand Filter?

A: Aite Three-Tank Parallel Shallow Sand Filter shell and pipes are made of

 carbon steel Q235B, treated with phosphate and baked at high temperature 

after electrostatic spraying – providing excellent corrosion resistance. Stainless

 steel construction is also available.

Q7: How long does the backwash process take in the Aite Three-Tank Parallel

 Shallow Sand Filter?

A: The backwash process in Aite Three-Tank Parallel Shallow Sand Filter lasts 

at least 2 minutes – after which the valve automatically switches the system 

back to filter state.

Q8: Does the Aite Three-Tank Parallel Shallow Sand Filter require maintenance?

A: Aite Three-Tank Parallel Shallow Sand Filter has a high flow rate and requires 

no maintenance – providing reliable, low-maintenance operation.

Q9: What industries use the Aite Three-Tank Parallel Shallow Sand Filter?

A: Aite Three-Tank Parallel Shallow Sand Filter is widely used in water treatment, 

cooling water, wastewater treatment, power generation, petrochemical, 

metallurgy, paper, and irrigation applications.

Q10: What documentation is provided with the Aite Three-Tank Parallel Shallow 

Sand Filter?

A: Each unit includes a factory test report, operating manual, electrical 

schematics, dimensional drawings, and material certificates – ensuring smooth 

installation and comprehensive operational guidance.

Q11: Can the Aite Three-Tank Parallel Shallow Sand Filter be customized?

A: Yes. Custom options for Aite Three-Tank Parallel Shallow Sand Filter include

 special tank configurations, materials, control modes, and backwash

 sources – based on site-specific requirements.

Q12: Can I order a trial unit of the Aite Three-Tank Parallel Shallow Sand Filter?

A: Yes. We support trial orders with standard delivery lead time of 20–30 working

 days. Volume discounts are available for bulk orders from distributors and

 industrial end users.

Aite Three-Tank Parallel Shallow Sand Filter – high filtration speed, low pressure 

loss, modular design, automatic backwashing, corrosion-resistant construction. 

Contact us today for a free configuration recommendation and competitive 

factory-direct quotation within 24 hours.

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Product Details