ABSTRACT Anaerobic digestion, a well-established technology to generate biogas from sewage sludge, is constrained by the hydrolysis (or solubilization) stage. Several pretreatments attempt to ...
17 February, 2016
Thermal Hydrolysis is the pre-treatment that overcomes the main limitation of existing anaerobic digestions: the hydrolysis step. This results in a more biodegradable organic waste that yields more biogas.
At the same time, it reduces sludge volumes and cuts handling costs. The resulting high-quality biosolids, instead of going to disposal, are suitable for fertilizer usage in food production.
The hydrolyzed, low-viscosity material, enables anaerobic digester loading rates to be doubled, debottlenecking existing plants and resulting in capital expenditure avoidance.
TH4+, the Thermal Hydrolysis for +, is the technology featuring super-quick heating that allows higher hydrolysis temperatures without harmful secondary reactions. This enables higher pressures and stronger flashes, more severely breaking the organic waste´s cell structure and making it easier to digest.
Its innovative design avoids the use of pumps, with subsequent gains in process reliability and maintenance cost. TH4+ redefines thermal hydrolysis as a continuous process that overcomes the issues associated with batch processing.
Heat-integrated for greater energy efficiency and with a compact design, it is the state-of-the-art technology to help you squeeze more out of your sludge.
Input the key figures and parameters of your anaerobic digestion and check how you can benefit from TH4+, the thermal hydrolysis for +
Units
Feed flowrate (kg/h):
Feed total solids (%):
Type of feed:
COD/VS primary sludge (kg COD/kg VS)
COD/VS secondary sludge (kg COD/kg VS)
VS/TS conversion (kg VS/kg TS)
CH4/COD (Nm3 CH4/kg COD)
% COD in sludge (%)
% VS in secondary sludge (%)
CH4 in biogas (w/o TH4+) (%v)
CH4 in biogas (w/ TH4+) (%v)
Primary sludge yield (COD elim./COD total)
Secondary sludge yield (w/o TH4+) (COD elim./COD total)
Secondary sludge yield (w/ TH4+) (COD elim./COD total)
CH4 low heating value (LHV) (kWh/Nm3)
Electric efficiency (%)
Power price (€/kWh)
Sludge disposal cost (€/t)
Biosolid sales price (€/t)
Biosolid dryness (%)
Operating time (h/year)
OUTPUTS
Without TH4+
With TH4+
Difference
Biogas production (Nm3/d)
Power generation (kW)
Biosolids production (kg TS/d)
Benefit (€/year)
Legend: COD: Chemical Oxygen Demand / VS: Volatile Solids / TS: Total Solids / CH4: Methane
