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11 June 2026 · KSB · 6 min

KSB AMAMIX: submersible mixer for wastewater, sludge and industrial processes

KSB Amamix submersible mixer

In wastewater treatment plants and wastewater tanks, correct mixing is essential. It helps homogenise fluids, prevent deposits and maintain a controlled flow. KSB AMAMIX is a submersible mixer for wastewater, designed for wastewater, sludge, biogas and wastewater treatment. In these applications, reliability, energy efficiency and low maintenance are important criteria. Thanks to the self-cleaning ECB propeller, the triple sealing system and the compact direct-drive design, AMAMIX offers a robust solution for mixing tanks, digesters, pumping stations and difficult industrial installations. This submersible mixer is recommended for tanks where solids must be kept in suspension, deposits prevented and the fluid continuously homogenised.

What is the KSB AMAMIX submersible mixer?

KSB AMAMIX is a submersible mixer, in a compact design. It has a direct drive and an ECB (Ever Clean Blade) propeller designed to be self-cleaning. The unit is intended for applications with liquids, sludge or suspensions. It keeps the fluid moving and helps avoid sedimentation, deposits or low-flow zones.

Thanks to its robust construction, AMAMIX can be used in difficult environments. It is suitable for wastewater treatment plants, sludge tanks, digesters and biogas applications. It can also be used in nitrification and denitrification tanks and in industrial wastewater treatment processes.

Where is the KSB AMAMIX submersible mixer used?

The AMAMIX submersible mixer is recommended for many industrial applications. It is suitable for wastewater treatment plants, industrial processes and sludge treatment installations.

  • mixing tanks and equalisation tanks;
  • sludge storage tanks and sludge thickeners;
  • wastewater tanks and stormwater retention tanks;
  • digesters and biogas applications;
  • nitrification and denitrification tanks;
  • phosphorus removal tanks and flocculation tanks;
  • pumping stations and pump sumps;
  • ice prevention, flow acceleration and prevention of deposits;
  • breaking up and moving floating sludge;
  • keeping tanks and pump sumps clean.

This flexibility makes AMAMIX suitable for upgrading existing installations. It is also suitable for new projects involving wastewater equipment.

ECB technology: self-cleaning propeller for efficient operation

KSB Amamix submersible mixer
The ECB propeller is designed to be self-cleaning, and jet ring versions can optimise the ratio of thrust to installed power.

One of the distinctive features of the AMAMIX mixer is the Ever Clean Blade, ECB. It is available in stainless steel or polyurethane versions. The propeller is designed to be self-cleaning and reduces the build-up of material on the blades during operation.

The propeller design contributes to an efficient ratio between thrust and installed power. For applications that need further optimisation of hydraulic performance, versions with jet ring, which helps improve the thrust/power ratio.

High reliability with a triple sealing system

KSB Amamix submersible mixer
The 3-stage sealing system helps protect the motor in submerged operation.

In wastewater applications, motor protection is critical. AMAMIX incorporates a dynamic 3-stage sealing system, consisting of two SiC/SiC mechanical seals in tandem arrangement and a lip seal.

This concept provides additional protection against water ingress into the motor area and supports reliable operation in submersible duty. In addition, the cable entry is fully sealed to prevent water entering the motor compartment.

To monitor operation, the motor is fitted with three temperature sensors and one moisture sensor. Sensor data can be evaluated with the protection and monitoring module AmaControl from KSB.

Long maintenance intervals and environmentally friendly oil

AMAMIX is designed for reliable operation and long intervals between service operations. The mixer can run for up to 16,000 hours without an oil change, and an oil change is recommended every three years.

The seal chamber is filled with environmentally acceptable white oil, which supports more environmentally responsible operation.

Main technical data

Nominal propeller diameter 220, 290, 320, 370, 410, 480, 570, 630 mm
Power 1.25 - 10 kW
Fluid temperature up to +40°C
Installation depth up to 30 m
Design submersible, horizontal, compact, direct drive

For further technical details, see the manufacturer's page: KSB, pumps, valves and equipment for water and wastewater.

Accessories for flexible installation in existing applications

An important advantage of AMAMIX submersible mixers is the wide range of installation accessories. They make it easier to integrate the equipment into new projects, tanks or existing applications.

KSB offers dedicated accessory sets for flexible installation. The mixer can be mounted on the tank wall or on the horizontal tank floor. Depending on the configuration, these include items such as an upper bracket, guide rail, guide bracket, fixing bracket, lower bracket and an optional lifting system.

KSB AMAMIX: submersible mixer for wastewater, sludge and industrial processes

Practical benefit: for certain configurations, the system allows the mixer to be swivelled by up to 45° to the left and right relative to the guide rail axis, in 7.5° steps. This flexibility helps position the mixer correctly according to the tank geometry and the required flow direction.

Accessories are available for the AMAMIX 200, 300, 400 and 600 ranges and can be supplied in materials suited to the operating environment, including stainless steel 1.4301 or 1.4571, depending on the application requirements.

Why choose AMAMIX for wastewater applications

AMAMIX is a suitable solution for operators looking for a robust submersible mixer. It is efficient, easy to maintain and suitable for wastewater and sludge applications. The combination of the ECB propeller, triple sealing system and motor monitoring provides high reliability. Long maintenance intervals make it suitable for processes where operational continuity matters.

With its wide range of sizes and power ratings, AMAMIX can be adapted to various tank configurations. It is suitable for homogenisation, keeping solids in suspension and preventing deposits. It can also be used for floating sludge management, nitrification, denitrification and biogas.

For projects that also include pumping equipment, automation or integration into wastewater treatment plants, you can also explore the Techworks sections dedicated to industrial products.

Technical advice on choosing the right mixer

Choosing the right submersible mixer depends on tank geometry, fluid type, sludge concentration, process objective and operating conditions. The Techworks team can provide technical support to identify the right AMAMIX configuration and integrate the unit into your existing application.

To propose the right AMAMIX mixer, we need some information about your application: tank size and shape, liquid level, fluid type, mixing objective and available mounting method.

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