THP WAS only THP I-THP Cambi own IP   THP WAS only THP I-THP Cambi own IP Typical application Intensive digestion for new builds and sludge centres Partial intensification / class B sludge Lazy existing digester capacity, Class A cake, Increased energy production VS loading <8 kgVS/m3/d < 621 lb.VS/1,000 ft3 3-5 kgVS/m3/d 233-388 lb.VS/1,000 ft3 3-4 kgVS/m3/day 233-311 lb.VS/1,000 ft3 Energy balance >80% of biogas to CHP 100% on waste heat THP size 100% ~50% ~60% Typical %DS of cake 30-45% 25-40% 34-50% Typical VSR 52-65% 52-60% 60-70% Electrical Output (MWh/TDS) 0.97 0.90 1.07 Operational / in construction 40 3 1 (pilot)

Cambi Solidstream® Technology CHP Electricity Steam < 500 kg/tonDS Biogas + 15 – 30% gas from THP hydrolysate Final dewatering (no polymer) Sludge cake > 60% DS Thickened Sludge 5% DS 17% DS 100°C Pre dewatering Applicable to indigenous sludge but temperature increase is limited since a very high flow is heated. DS of thickened sludge has a very high impact on energy balance. Allows all cooling energy to be used for pre-heating at low temperature. Additional pre-heating can be done with engine cooling water. Pre-heating before pre-dewatering will have a positive impact on pre-dewatering and will reduce the polymer consumption of the centrifuge. The use of pre-heating is especially applicable for oxidation ditch projects or in WAS only projects, as this type of sludge is often very difficult to dewater (low DS, high polymer consumption). Pre-heating is a nice alternative for (expensive) fin-fan coolers dumping the heat in the air. Conventional digester 45% VSR SolidStream® Reject water to main WWTP Hydrolysate (soluble COD) to digester

SolidStream® Standardised Design 60 tds/day - 3 x SolidStream® System is easily configured with 1, 2 or 3 lines. All units are standardized for reducing risk in projects. System based on module design.