Air Blowers in Wastewater Treatment: Concepts and Applications

What is a Blower in Wastewater Treatment?

A blower is a specialized device designed and used to aerate, provide essential oxygen for microorganisms in water. This helps them develop and decompose pollutants effectively.

Blowers are commonly used in tanks in water treatment systems such as: Aeration tanks, aerobic biological tanks...

There are many types of blowers available on the market from different brands. You need to carefully research the quality, capacity, and advantages of each device to choose the most suitable product for your needs.

Why is a Blower Necessary in Wastewater Treatment?

It can be said that aeration blowers are important and indispensable devices in wastewater treatment systems today. They bring many benefits throughout the pollution treatment process. Specifically:

• Regulate and stabilize the water environment of the tank.
• Provide oxygen to aerobic microorganisms. This helps them grow vigorously and decompose organic matter quickly and efficiently.
• Aerate to treat the odor of the water.
• Enhance the process of dissolved oxygen. Accelerate the oxidation of organic pollutants in the water.
• Blowers also help promote the mixing process of wastewater with activated sludge. This creates conditions for microorganisms to grow and come into contact with wastewater treatment chemicals.
• Furthermore, blowers also help keep activated sludge in a suspended state. At the same time, ensure sufficient oxygen for the decomposition of organic matter.

Types of Blowers in Wastewater Treatment

There are many different types of blowers available on the market. The main three types include: Air-stone blowers, roots blower type blowers, and submerged aerators for wastewater treatment systems.

Each type has different characteristics. Specifically:

Air-stone Blowers

These blowers have moderate power and are often used in industrial and domestic wastewater treatment systems. This equipment is highly regarded for its compact design, low cost, energy efficiency, and low noise generation... However, the product is only suitable for projects with low flow rates and low tank heights...

Roots Blower Type Blowers

This type of blower is widely used in oxidation ditch systems. The design of the blower does not require an air distribution system but directly extracts oxygen and disperses it into the water. Therefore, if a problem occurs, it can be easily repaired.

Roots blower blowers have high operating power and are suitable for large water treatment systems. Therefore, the level of energy consumption may also increase.

Submerged Aerators

This device is installed in small wastewater treatment systems in apartment buildings, offices, hotels... The pump is highly regarded for its low cost, low noise operation, and easy maintenance. However, the power of the machine is not high, and the air flow is low.

Where are Blowers in Wastewater Treatment Applied?

• Applied in aeration tanks at the initial stage of wastewater treatment systems.
• Applied in biological wastewater treatment tanks, especially aerobic tanks.
• Aerate for oxidation ditches, aeration ponds, natural and artificial biological ponds.

Guide to Choosing and Buying a Blower

Choose the Right Equipment for Your Purpose

Determining the purpose of use of the pump will help you have a clearer direction in choosing the product. This is an important factor to help customers find a product line that meets all needs. From there, bring convenience in use and optimal efficiency.

Determine the Investment Cost

Currently, blowers have different price segments on the market. This depends on the brand, quality, and capacity. You need to base on your financial ability to choose a product line with a suitable cost:

• If your financial capacity is limited, you can choose blowers from China, Taiwan. However, the majority of these product lines have low quality and lifespan.
• Conversely, if you have a good financial situation, choose blowers from Japan, Europe to ensure quality, performance, and lifespan.

Determine Related Factors

• Gas flow rate: Determine the gas flow rate according to the actual needs of the wastewater treatment system. This requires the support of technical experts.
• Electricity voltage: Electricity voltage directly affects the operation of the equipment. If the voltage is too low, the blower may not operate. Conversely, if the voltage is too high compared to the machine's needs, it can easily lead to short circuits, fires... Therefore, determine the voltage level and choose equipment with equivalent power consumption.
• Pressure head: Pressure head is the pressure difference at the aeration point compared to atmospheric pressure. Therefore, it is necessary to determine the appropriate pressure head for the design of the wastewater treatment tanks. This way, it ensures the supply of air for the machine to operate.

Operating Environment

The environment affects the efficiency of the work and the durability of the equipment. Therefore, it is necessary to determine the factors in the working environment such as humidity, dust, corrosive substances... From there, choose the appropriate product.

Above are some information about blowers in wastewater treatment. Hopefully, it has helped you understand more about this equipment. If you have any questions that need answers, please contact us to be advised by experts.