Process Description	Siemens Water Technologies Equipment
Stabilization via anaerobic digestion (Reduces volume; reduces pathogens to Class A or B levels)	Sludge heaters, heat exchangers, digester covers, gas and hydraulic mixing systems, gas handling Temperature-phased anaerobic digestion (TPAD)
Enhanced anaerobic digestion (Reduces volume; reduces pathogens)	Dystor® membrane gas storage system
Stabilization via aerobic digestion (Reduces volume; removes pathogens)	Aerobic digestion equipment and system
Stabilization via lime (Reduces pathogens; adjusts pH)	Lime slakers, tank-feed systems for hydrated lime, Encore® or Chemtube® PPS pumps WHM bulk chemical handling systems
Composting (Converts biosolids and municipal solid waste to quality compost)	IPS® composting system
Thickening (Removes water to thicken solids)	Gravity belt thickener and horizontal decanter centrifuge (generate up to 6% dry solids) Float-Treat® dissolved air flotation thickener Gravity thickener
Dewatering (Removes water from biosolids)	Dynamic and Static Radial Wedge belt press, compact belt press (generates up to 25% dry solids) Horizontal sludge decanter (generates up to 35% dry solids) J-Press® sidebar and overhead filter press (generates up to 45% dry solids)
Dewatering/Drying (Creates pathogen-free solids)	J-Vap® dewatering/drying system (generates up to 95% dry solids)
Drying (Creates dried, pathogen-free product)	Convective Thermal Dryer, Sludge Belt Dryer, and  Ecoflash® Thin Layer Dryer (dries biosolids and organic wastes to 95%)
Incineration (Combusts biosolids, reduces volume, recovers energy)	Fluid bed furnaces
Handling systems (Store, transport, mix biosolids)	Mixers
Odor control	ZABOCS™ biological odor control system, LO/PRO® odor control scrubber system, and Poly-Stage scrubber system Carbon adsorbers BIOXIDE-AQ® spray system; ODOPHOS® feed system; ODOFREE feed system
Instrumentation & Controls	Systems and services – Control Systems

Class A & B Biosolids
Class A Technologies
Class B Technologies
Understanding 40 CFR Part 503

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