title: Thermal hydrolysis of waste activated sludge at Hengelo Wastewater Treatment Plant, the Netherlands.
abstract: The thermal hydrolysis process (THP) is a sludge treatment technique which affects anaerobic biodegradability, viscosity and dewaterability of waste activated sludge (WAS). In 2011 a THP-pilot plant was operated, connected to laboratory-scale digesters, at the water board Regge en Dinkel and in cooperation with Cambi A.S. and MWH Global. Thermal hydrolysis of WAS resulted in a 62% greater volatile solids (VS) reduction compared to non-hydrolysed sludge. Furthermore, the pilot digesters could be operated at a 2.3 times higher solids loading rate compared to conventional sludge digesters. By application of thermal sludge hydrolysis, the overall efficiency of the sludge treatment process can be improved.
authors.affiliation: Water Board Regge en Dinkel, currently: Water Board Vechtstromen, P.O. Box 5006, 7600 GA, Almelo, The Netherlands E-mail: m.oosterhuis@vechtstromen.nl.
authors.forename: Mathijs
authors.initials: M
authors.lastname: Oosterhuis
authors.affiliation: Cambi A.S. P.O. Box 78, NO-1371 Asker, Norway.
authors.forename: Davy
authors.initials: D
authors.lastname: Ringoot
authors.affiliation: Royal HaskoningDHV, currently: Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, The Netherlands.
authors.forename: Alexander
authors.initials: A
authors.lastname: Hendriks
authors.affiliation: MWH Global, currently: RoyalHaskoningDHV, P.O. Box 151, 6500 AD, Nijmegen, The Netherlands.
authors.forename: Paul
authors.initials: P
authors.lastname: Roeleveld
mesh_terms: D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D056804:Biofuels; D019149:Bioreactors; D004867:Equipment Design; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D009426:Netherlands; D009584:Nitrogen / Q000032:analysis; D011108:Polymers / Q000737:chemistry; D012722:Sewage; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater; D018508:Water Purification / Q000379:methods*
chemical_list: D056804:Biofuels; D009584:Nitrogen; D011108:Polymers; D012722:Sewage; D062065:Wastewater