Cooling Water Shallow Sand Filter System

Product Description of Shallow Sand Filter System

The Shallow Sand Filter is an efficient automatic filtration system designed for industrial, municipal, and irrigation water treatment applications. Utilizing a shallow bed of high-quality filtration media, the system provides excellent removal of suspended solids, algae, and fine particles while maintaining low pressure loss and high filtration efficiency.

Unlike conventional deep-bed media filters, the shallow media design enables rapid filtration, shorter backwash cycles, lower backwash water consumption, and more uniform media cleaning. Multiple filtration units can be operated in parallel to accommodate various flow capacities while ensuring continuous and reliable operation.

Equipped with an intelligent automatic backwash control system, the Shallow Sand Filter is widely used for cooling water treatment, irrigation systems, reclaimed water reuse, seawater pretreatment, industrial process water, and municipal water treatment applications.

Features of Automatic Shallow Sand Filter

1. High-Efficiency Shallow Media Filtration

Uniform filtration performance with low pressure loss.

Optimized shallow media design improves filtration efficiency;

Effectively removes suspended solids, algae, and fine particles;

2. Automatic Backwash Operation

Continuous and reliable filtration performance.

Automatic backwashing initiated by pressure differential or timer;

Short backwash cycle with reduced water consumption;

3. Modular System Design

Compact footprint suitable for large-scale water treatment projects

Multiple filter units operate independently or in parallel;

Easy system expansion for different flow capacities;

4. Reliable and Durable Construction

Designed for continuous industrial operation.

Carbon steel, SS304, or SS316L vessel options available;

Corrosion-resistant materials for long service life;

5. Energy-Saving Performance

Lower operating and maintenance costs.

Low operating pressure loss;

Reduced backwash water consumption;

6. Flexible Customization

Designed according to flow rate, water quality, and project requirements.

Automatic PLC control system available;

Customizable filtration media and vessel configuration;

Application Areas for Multi Media Filter

Industrial circulating cooling water systems

RO pretreatment systems

Municipal water treatment plants

Wastewater recycling and reuse systems

Seawater desalination pretreatment

Irrigation and agricultural water filtration

Power plant and utility water systems

Steel, petrochemical, and chemical industries

Paper making and textile industries

Industrial process water treatment

After-Sales Service

1.Professional Technical Support

Professional technical consultation, system selection, and installation guidance are provided throughout the project process.

2.Warranty Service

The equipment comes with a one-year warranty. During the warranty period, free technical support and troubleshooting assistance are provided.

3.Maintenance and Spare Parts Support

Lifetime maintenance service is available. Spare parts and replacement filter elements can be supplied continuously according to customer requirements.

4.Remote Support

Remote technical assistance for commissioning, operation, and troubleshooting is available via online communication platforms.

Technical Parameters

Technical Parameters
Model	FQG48-1	FQG48-2	FQG48-3	FQG48-4	FQG48-5
Single tank diameter (mm)	1200	1200	1200	1200	1200
Inlet/outlet pipe diameter (mm)	DN100	DN150	DN150	DN200	DN200
Tank material	Carbon steel	Carbon steel	Carbon steel	Carbon steel	Carbon steel
Tank anti-corrosion treatment	Electrostatic spraying	Electrostatic spraying	Electrostatic spraying	Electrostatic spraying	Electrostatic spraying
Single unit filtration area (m²)	1.1	2.2	3.3	4.4	5.5
Filtration velocity (m/h)	20-36	20-36	20-36	20-36	20-36
Single unit treatment capacity (m³/h)	20-40	40-80	60-120	80-160	100-200
Working pressure (MPa)	0.2-0.4	0.2-0.4	0.2-0.4	0.2-0.4	0.2-0.4
Backwash intensity (L/(s·m²))	8-12	8-12	8-12	8-12	8-12
Single tank backwash duration (s)	90	90	90	90	90
Backwash interval (h)	4-8	4-8	4-8	4-8	4-8
Backwash control pressure difference (MPa)	0.08	0.08	0.08	0.08	0.08
Filter media type	Natural sea sand	Natural sea sand	Natural sea sand	Natural sea sand	Natural sea sand
Filter media particle size min./max. (mm)	0.6-1.2	0.6-1.2	0.6-1.2	0.6-1.2	0.6-1.2
Filter media thickness (mm)	800mm	800mm	800mm	800mm	800mm
Single tank weight (t)	0.6	1	1.5	2	2.5
Single tank operating weight (t)	3.5	7	10.5	14	17.5
Layout type	Single row	Single row	Single row	Single row	Single row