In drinking water treatment, alum and iron salts or synthetic organic polymers (used alone or in combination with metal salts) are mixed with raw water to promote the coagulation or combining of small particles into larger particles. This process is known as coagulation-flocculation. Following this step, the water passes into clarifier tanks where the particles settle out of the water as sediment. The clear water then flows on to other treatment steps, commonly filtration and disinfection before it is pumped into the distribution system.
Siemens offers several types of clarifiers that are used in the sedimentation step at drinking water treatment plants:
- Circular clarifiers
- Pre-engineered package plants combining clarification and filtration
- Inclined plate separators (Lamella separators)
- Unique systems that combine such steps as flocculation, clarification, lime softening, thickening, and solids removal into a single process component.
- Mobile clarifiers and clarification services
Siemens also provides pilot treatment systems and analytical testing to document the efficacy of treatment prior to installation. We also provide parts and service on all of our equipment, as well as equipment which may have been provided by other manufacturers.
Siemens Drinking Water Technologies and Services