What is a pressure filter tank? Structure of pressure filter tank, operating principle

Pressure filtration tanks are an effective solution for the purification process, increasingly becoming indispensable equipment in factories and enterprises from food to chemicals. But do you clearly understand what a pressure filter tank is, how the pressure filter tank is structured and how it operates? Let’s explore to have a deeper look at this device through the article below.

What is a pressure filter tank?

A pressure filter tank is a type of closed filter tank, designed quickly and effectively, suitable for purifying well water, wastewater, and many other types of liquids. The main structure of the pressure filter tank is usually made from stainless steel or composite, with a vertical cylindrical shape (small capacity) or horizontal cylindrical shape (large capacity), ensuring high durability and ability to withstand high pressure. during operation.

See details: Composite filter tanks for quality water filtration 

Characteristics of pressure filter tanks

The pressure filter tank is a unique and popular device in many industrial and water treatment applications thanks to its outstanding features:

• Can handle very small solids, even micro particles.
• Water treatment time is also very quick, promptly responding to production processes that require a continuous source of clean water.
• Neat design, takes up little floor space, very suitable for limited installation spaces.
• With simple automatic or manual control mode, very convenient to use, suitable for wastewater treatment systems with large capacity and load.

Learn about: Current wastewater treatment systems come with standard procedures

Structure of pressure filter tank

Simulation of the structure of a pressure filter tank

To have a comprehensive understanding of the structure of a pressure filter tank, we will analyze each part in detail:

• The tank shell is made from durable materials such as composite, steel or stainless steel. The tank shell ensures tightness and can withstand high operating pressure.
• Inside the tank shell is the filter cover floor, on which is placed a layer of filter material such as sand, gravel or activated carbon.
• The funnel leads the solution containing impurities into the filter tank in a stable manner.
• The pipeline system includes many different types of pipes such as filtered water pipes, water pipes into the tank, filter wash air pipes, filtered water discharge pipes, filter wash water discharge pipes, filter wash water pipes,…
• The inspection holes help operators easily check, maintain and handle problems inside the filter tank.
• The air release valve and exhaust valve are responsible for releasing air or draining all filtered water when necessary.

Principle of pressure filter tank

Based on the structure of a pressure filter tank, wastewater treatment operates on the same principle as conventional water filtration equipment. The treatment process begins by introducing water into the tank through a funnel system.

The water then flows through a layer of filter sand, filter material or support layer to remove dirt particles and toxic substances. Purified water is collected at the bottom of the tank and is led out through a network of pipes.

When it is necessary to wash the tank, water will be pushed back from bottom to top, through the filter sand layer and collection funnel. Washing water will flow out through the drainage system. To ensure effective operation, the pressure filter tank is also equipped with an air discharge pipe and air release valve. A pressure gauge is also installed to monitor the pressure inside the tank.

Popular types of pressure filter tanks

Pressure filtration tanks are a common device in many industrial and water treatment applications. They can be classified according to two main criteria: material and shape.

Classified by material

Pressure filter tanks can be made from many different materials, such as:

• Composite: High durability, good corrosion resistance, reinforced with glass fibers, combined with polyester resin or epoxy resin, providing high hardness and durability in many harsh conditions.
• Steel: High durability, good bearing capacity, suitable for large projects.
• Stainless steel: Highly corrosion resistant, easy to clean and maintain, long lifespan.

Classified by shape

Vertical cylindrical pressure filter tank

Neat design, takes up little floor space, suitable for indoor installation. With an elongated shape, the vertical cylindrical tank is easy to integrate into the production space, optimally treating water. This type of filter tank can be divided into two smaller types:

• Static roof filter tank: Has large capacity, from 100m3 to 20,000m3
• Floating roof filter tank: This type of tank has the effect of removing light hydrocarbons and minimizing environmental pollution, bringing high economic benefits.

Horizontal cylindrical pressure filter tank

Pressure filter tanks have a horizontal design, larger in size but lower in height than vertical tanks. This type of tank can be divided into many different types, depending on purpose and features: based on filtration speed, based on flow regime, based on structure.

Advantages and limitations of pressure filter tanks

Understanding the advantages and limitations of pressure filtration tanks will help designers and users choose and apply the most appropriate equipment.

Advantages of pressure filter tanks

• Manufacturing and operating principles of the device are simple and easy, and unexpected incidents rarely occur
• The devices in the system are easy to replace, saving costs and installation time
• The price is reasonable and suitable for many different customers
• Operating materials are easy to find, do not use electricity, heat or chemicals
• Large wastewater treatment capacity, long continuous operating time
• Compact system area, space saving

Disadvantages of pressure filter tanks

• The filtration system has not filtered out all the dirt inside industrial wastewater treatment
• Sand in the system is lost quickly, reducing the quality of the filter
• Sudden power outages can cause water leaks that affect the environment

Address to buy pressure filter tanks at good prices at Song Phung

At Song Phung, we specialize in providing water filtration equipment, replacement accessories and water filtration system complete. With a team of consultants with many years of experience in the industry, they will advise and provide design solutions depending on customers’ different needs.

Thus, a pressure filter tank is a device that not only brings high efficiency in purifying liquids but also makes an important contribution to improving the quality of the final product. To find high quality pressure filtration tanks that suit your needs, you can visit Song Phung’s website, let us help you find the most effective pressure filtration solution for your business.