Hiller decanter for thickening
Goals:
- achieve an ideal consistency in raw / mixed sludge prior to the digestion
- reduce the sludge volume fed to the digestion tank
- better use of the digestion tank and therefore longer retention time in the digestion tank
- increase in the maximum possible discharge DS during the digested sludge dewatering
Advantages of thickening with the Hiller decanters compared to other thickening systems:
- vapour-proof design
- operation without polymer dosing possible
- starch polymers and chitosan can be used as supporting agents
- minimum energy consumption (-0,2kW/m³)
- no intermediate flushing cycles required for continuous operation -> no water consumption during operation
- no filter cleaning required
- fully automatic operation due to feed concentration measurement in conjunction with Hiller SEE-Control pro
- process values largely independent of sludge index
- infinitively variable degree of thickening, up to the viscosity limit with regard to pumpability
- optionally expandable with Hiller lysate technology for sludge disintegration