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Aerial photo of a waste water treatment plant

Wastewater Treatment

KSB is a trusted partner for wastewater treatment – worldwide

KSB sets standards for wastewater treatment around the globe. The wastewater treatment plant in Shanghai, one of the biggest in Asia, is just one example of where KSB’s products have proven their worth.

The challenges faced in wastewater treatment are growing

Engineering contractors dealing with wastewater treatment across the globe are all facing the same challenge: sewage, wastewater and surface water increasingly contain solids such as wet wipes and stringy material liable to clog pumps. Particularly in times of decreasing budgets and increasing process complexity, wastewater treatment plants must be operated as efficiently and smoothly as possible with maintenance requirements being kept to a minimum.

Waste water pumps used in a plant for waste water treatment

KSB wastewater pumps from the Sewatec range used in the central wastewater treatment plant Volkach, Germany

KSB ensures that wastewater treatment is reliable and efficient

As an expert in wastewater treatment, KSB offers bespoke all-in solutions for pumps, valves and service which help you to operate your system more efficiently and reliably. Optimized processes improve your system’s performance while reducing maintenance costs.

KSB’s energy-efficient, low-maintenance pumps are employed in wastewater treatment plants at all cleaning stages, e.g. for preliminary screening in intake pumping stations, handling primary and floating sludge, and recirculating activated sludge in biological wastewater treatment.

Wastewater pumps from KSB: non-clogging and absolutely reliable

Designed with non-clogging impellers and large free passages, wastewater pumps from the KSB Amarex KRT and Sewatec type series ensure efficient operation even when handling fluids with a high solids content. Energy-saving drives, wear-resistant materials and smart automation products optimize your processes, improve the performance of your system and reduce maintenance requirements. Absolutely water-tight cable entries and mechanical seals with covered springs for use in particularly abrasive wastewater are just some of the special design details contributing to even higher levels of reliability.

Mixers produced by KSB aid the degradation of pollutants by circulating wastewater. Featuring an optimized hydraulic system and break-proof propeller as well as offering especially long maintenance intervals, the KSB Amaprop mixer sets standards in this segment. The portfolio is complemented by reliable valves such as the HERA-BDS knife gate valves which can be used to shut off pipes, during maintenance work.

All wastewater pump performance data is verified at our factory’s test facilities.

Thanks to decades of experience on the market, KSB offers comprehensive application knowledge – even for large-scale projects. You can benefit from application and service specialists on hand to provide support throughout the entire life cycle of your system.

Our portfolio

KSB offers a wide range of products for wastewater treatment

  • Dry-installed wastewater pumps
  • Pressure booster systems
  • High-pressure pumps
  • In-line pumps
  • Mixers, agitators, tank-cleaning units
  • Standardized pumps
  • Submerged recirculation pumps
  • Tubular casing pumps and submersible pumps in discharge tubes
  • Volute casing pumps
  • Submersible motor pumps

Applications include

  • Sewage treatment plants with mechanical, biological and chemical waste water treatment
  • Sludge treatment
  • Flood and stormwater overflow structures
  • Tank cleaning
  • Surface drainage
  • Drainage

Your benefits

  • A broad portfolio featuring pumps of different designs for all wastewater treatment processes ensures you will find the product you need.
  • Expert advice for consultants, engineering contractors and operators thanks to extensive international experience
  • Reliable and efficient operation thanks to non-clogging
  • Optimized selection of pumps and matching valves with Helps und KSB EasySelect
  • Reliable international supplier of pumps, valves and service – on the market for 150 years
  • Service and spare parts solutions covering the entire product life cycle complemented by 24-hour service from more than 3000 specialists in over 170 service centers

Find suitable pumps for wastewater treatment

Whether industrial wastewater or municipal sewage treatment:

KSB offers the right product, whatever the requirements of wastewater treatment plants.

Amarex KRT

Amarex KRT

Horizontal or vertical single-stage submersible motor pump in close-coupled design, with various next-generation impeller types, for wet or dry installation, stationary or transportable version, with energy-saving motor and models for use in potentially explosive atmospheres.



Volute casing pump for horizontal or vertical installation, with various next-generation impeller types, discharge flange to DIN and ANSI standards. Explosion-proof version available.



Horizontal submersible mixer with self-cleaning ECB propeller, close-coupled design, with coaxial spur gear drive. Explosion-proof version available.

Find suitable valves for wastewater treatment



Knife gate valve to DIN/EN with wafer-type single-piece or two-piece body made of nodular cast iron, bi-directional, with gland packing, non-rising stem, corrosion-protected by epoxy coating.



Gate valve to DIN/EN with flanged ends, elastomer-coated wedge, bolted bonnet, rotating stem, inside screw, body made of nodular cast iron.



Double-offset butterfly valve with epoxy coating. Perfect shut-off in either flow direction. Flanged ends to EN standards, body and valve disc made of nodular cast iron.

KSB success stories – read for yourself

Map of the Emscher canal

Energy efficiency for Europe’s largest wastewater treatment project

The 32 mile long Emscher sewer is considered to be the largest wastewater project in Europe and serves the sustainable restoration of the River Emscher in the Ruhr area of Germany.

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Service on slurry pump

Service at KSB SupremeServ means being fully looked after

KSB SupremeServ offers you a comprehensive range of services and spare parts for pumps, valves and other equipment – including for products from other manufacturers – from face-to-face consultation to installation, commissioning, maintenance and repair. More than 3500 specialists in over 190 service centers worldwide are available around the clock, seven days a week. Concentrate on your core business – and let us take care of the rest.

Inspection service

Inspection service

KSB SupremeServ’s inspection service provides regular pump inspection and pump maintenance to ensure the reliable operation and increased availability of your system.

  • Preventing failures
  • 24-hour on-call service
3D printing for pumps and valves

3D Printing

3D printing opens up new possibilities in spare parts procurement. An ideal solution if you need a spare part quickly.

  • Additive manufacturing of spare parts
  • Swift delivery
Reverse Engineering for pumps and valves

Reverse Engineering

Reverse engineering makes it possible to quickly manufacture spare parts for pumps, valves, and other rotating equipment that are hard to find or no longer available. 

  • Quick reproduction of spare parts
  • Replacements for parts that are no longer being manufactured
  • Engineered to OEM standards or optimized and improved for the job