Scaba top-mounted vertical agitators are used for mixing and agitating process liquids in many industries, including wastewater and industrial applications. They ensure homogenous mixing results, high process reliability, high efficiency, low operating costs and low environmental stress. A comprehensive range of standardized agitators are available within the Scaba TreatX concept, especially suitable for selected applications in water and wastewater industries.
Up to 180 °C / 355 °F
Up to 30 m / 100 ft
A cross section of a Scaba agitator in a digester application
When planning new water treatment plants or upgrading existing ones, operating costs are as important as investment costs. Sulzer’s innovative pumps, mixers and compressors combine reliable treatment performance with superior energy efficiency.
Anaerobic digestion requires temperature equalization and the proper homogenization of the biomass. Floating crusts must be broken and the formation of foam must be prevented.
The target of the biological process is to remove organic, biodegradable substances via the metabolism of microorganisms and related biochemical processes. Doing this makes it possible to significantly reduce the final volume of sludge for treatment.
Chemicals must sometimes be mixed into the activated sludge before it enters the secondary sedimentation tank. Whenever this done, it is important to achieve an even distribution of the chemicals.
Sometimes it is necessary to mix chemicals into the activated sludge before it enters the secondary sedimentation tank. For example, chemicals may be used to perform phosphorous removal on the effluent from the biological process.
The purpose of the selector tank is to control and limit the growth of filamentous bacteria, and then to enhance the sedimentation ability of the sludge.
The sludge buffer tank can be used for a variety of purposes. The most common application is the blending and homogenization of highly concentrated primary, secondary or digested sludge.
Treated wastewater may occasionally require further treatment. Local discharge rules may pose strict limits that cannot be fulfilled by even the most effective process, or a higher quality of effluent may be requested for its reuse.