Top Entry Mixers for Coagulation Tanks

Reliable and Efficient Mixing Solutions for Modern Water Treatment

Water treatment is one of the most important processes in municipal and industrial facilities. Whether treating drinking water, wastewater, or industrial process water, efficient mixing plays a critical role in ensuring stable water quality and chemical reaction efficiency.

Among various mixing equipment, the Top Entry Mixer, also known as a Vertical Mixer, has become one of the most widely used solutions for coagulation and rapid mixing applications. Its simple structure, reliable operation, and excellent mixing performance make it an ideal choice for water treatment plants around the world.

Why Mixing Is Critical in the Coagulation Process

Coagulation is the first major step in most water treatment systems. During this process, chemicals such as aluminum sulfate (alum), ferric chloride, or PAC are added into the raw water to destabilize suspended particles.

For the chemicals to react effectively, they must be dispersed rapidly and uniformly throughout the tank. Poor mixing may result in:

• Uneven chemical distribution

• Increased chemical consumption

• Incomplete coagulation

• Reduced treatment efficiency

• Higher operating costs

A properly selected top entry mixer ensures that coagulants are distributed within seconds, creating the optimal conditions for subsequent flocculation and clarification processes.

What Is a Top Entry Mixer?

A Top Entry Mixer is a vertical mixing device installed on the top of a tank. Power from the electric motor is transmitted through a gearbox or direct drive system to rotate the mixing shaft and impeller, generating the fluid flow required for efficient mixing.

Compared with side-entry or bottom-entry mixers, top entry mixers offer greater flexibility for a wide variety of tank sizes and liquid properties. They are suitable for both continuous and intermittent mixing operations.

Because every mixing application is different, the mixer should always be selected according to the tank geometry, liquid characteristics, and process objectives rather than simply based on motor power.

Typical Applications

KEHENG Top Entry Mixers are widely applied in:

• Municipal water treatment plants

• Industrial wastewater treatment

• Drinking water treatment systems

• Chemical dosing tanks

• Coagulation tanks

• Neutralization tanks

• Process mixing tanks

• General chemical industries

Each application requires different impeller configurations, rotational speeds, and sealing arrangements to achieve the desired mixing performance.

Engineered for Customized Mixing

No two mixing applications are exactly the same.

Instead of supplying standardized equipment, KEHENG designs every mixer according to the customer's operating conditions.

Our engineering team evaluates factors including tank dimensions, liquid level, density, viscosity, operating temperature, chemical characteristics, and mixing objectives before recommending the most suitable solution.

This customized approach helps customers achieve higher mixing efficiency while reducing unnecessary energy consumption and maintenance costs.

Reliable Design for Continuous Operation

Industrial mixers often operate continuously for many years under demanding conditions.

To ensure long service life, KEHENG top entry mixers are manufactured using high-quality materials and precision machining processes. Heavy-duty shafts, optimized impellers, and reliable sealing systems work together to provide stable operation with minimal maintenance.

Depending on project requirements, customers may select:

• Carbon steel or stainless steel construction

• 304 or 316L stainless steel wetted parts

• Mechanical seal or packing seal

• Direct drive or gear drive configuration

• Variable frequency drive (VFD)

• Explosion-proof motors for hazardous areas

Every configuration can be customized to meet specific project requirements.

Advantages of KEHENG Top Entry Mixers

Choosing the right mixer is not only about equipment—it is about process performance and long-term reliability.

KEHENG offers:

• Customized engineering instead of standard catalog products

• Factory-direct manufacturing with strict quality control

• Optimized impeller selection for efficient mixing

• Flexible configurations for different industries

• Reliable operation with low maintenance requirements

• Technical support from inquiry through commissioning

• Export experience serving customers worldwide

Our goal is to provide mixing solutions that maximize process efficiency while minimizing lifecycle costs.

Information Required for Mixer Selection

To recommend the most suitable mixer, our engineers typically require the following information:

• Tank dimensions

• Working liquid level

• Liquid density

• Viscosity

• Operating temperature

• Tank material

• Mixing purpose

• Installation requirements

Providing complete process information allows our engineers to perform accurate mixer selection and recommend the optimum configuration.

Your Trusted Mixing Partner

With years of experience in industrial mixing equipment, KEHENG is committed to delivering reliable and customized top entry mixing solutions for water treatment and industrial processes.

Whether your project involves rapid mixing, chemical dosing, or process blending, our engineering team is ready to provide a solution tailored to your specific application.

Contact KEHENG today to discuss your project and discover how the right mixing solution can improve your process efficiency.