TerraNova® Ultra Sludge Drying and Phosphorous Recovery by Ultradewatering of Sludge

What is Waste Water Treatment Sludge?

- Residue of Waste Water Treatment with (almost) all pollutants

- Consists of Feces and Bio-sludge from treatment process

- 70-80% Water Content

Problems: - High disposal cost - Energy consuming incineration necessary for safe disposal

TerraNova® Ultra allows for: - Less disposal cost - Energy recovery - Recovery of Phosphorous

Basic principle of TerraNova® Ultra: Hydrothermal Carbonization (HTC)

- Acceleration of natural coal generation with 4 hours

- Under lack of oxygen, temperature 180°C and pressure > 20 bar - Desintegration of cell structures

- Carbonization to coal slurry

- Separation of sludge water („Ultradewatering“) to solid fuel (like lignite coal)

TerraNova® Ultra The process

TerraNova® Ultra The process – in short

1. Input: Mechanically dewatered sludge, 20-30% dry matter

2. Carbonization to coal slurry

3. Separation of coal

4. Feed back of filtrate to anaerobic digestion or input of WWTP

5. Shipment of coal for incineration

TerraNova® Ultra The process – in short with Phosphorous recovery

1. Input: Mechanically dewatered sludge, 20-30% dry matter 2. Carbonization to coal slurry 3. Leaching of Phosphorous by pH-Shift 4. Separation of coal

5. Addition of Ca to Phosphorous rich filtrate

6. Separation of Phosphorous product 7. Feed back of filtrate to anaerobic digestion or input of WWTP 8. Shipment of coal for incineration

Green only with optional Phosphorous recovery

TerraNova® Ultra Solution of sludge disposal problem by Synergy

TerraNova® Ultra for dewatered sludge

Energy efficiency Mass reduction P-recovery

Ultra dewatering to

25% of the mass

(thus replacement of thermal drying)

80% less energy demand than thermal drying

15% more biogas

Up to 80% recovery from

sludge

EU Certified Product

optional:

TerraNova® Ultra Advantage Mass reduction

- Energy saving mechanical separation of 90% sludge water („Ultradewatering“)

- 80% less energy consumption than thermal sludge drying

- Reduction of solids by 25% to minimize disposal mass

Mechanically dewatered sludge 20% dry matter

- 90% Water

- 25% Solids

Ultradewatered Sludge Coal 65% dry matter

TerraNova® Ultra Optional:

Integrated Drying

Dry sludge coal 90% dry matter

TerraNova® Ultra Advantage Mass reduction

- Disposal mass in comparison to thermal sludge drying:

Mechanically dewatered sludge

Sludge after conventional thermal drying (evaporation)

Sludge coal after TerraNova® Ultra

Sludge coal after TerraNova® Ultra and integrated drying step

Dry matter: 25 % 90 % 65 % 90 %

Dry matter: 250 kg 250 kg 188 kg 188 kg

Water: 750 kg 28 kg 102 kg 21 kg

Disposal mass: 1000 kg 278 kg 290 kg 209 kg

TerraNova® Ultra Advantage Energy Efficiency

- Only 18 kWh electrical energy per ton sewage sludge (thermal dryer 85 kWh)

- Only 130 kWh thermal energy per ton sewage sludge (thermal dryer 600 kWh)

- 15% more biogas and energy production in digesters

- In comparison to conventional treatment and disposal of digested sludge TerraNova® Ultra achieves 47% to 79% more energy surplus*

*Ganzheitliche Energie- und Treibhausbilanz von Entsorgungsketten kommunaler Klärschlämme mit hydrothermaler Carbonisierung; Remy, Warneke, Lesjean, 2014

TerraNova® Ultra- the process design

- completely continuous process

- minimal number of valves and pumps

- stable pressure- and temperature levels

- no lag time through batch process

- no loss of condensate like steam injection

- ultra-dewatering in automated filter press with optional vacuum evaporation

TerraNova® Ultra Process flow diagram with optional P-recovery step (dotted)

TerraNova® Ultra- Integration on a sewage plant

(optional)

TerraNova® Ultra Project Jining/China Treatment of 14.000 tons p.a. sewage sludge (200.000 people equivalents)

TerraNova® Ultra Operating data(1): 2017-11-01 to 2017-11-23, Normal operation from Standby

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T sludge in reactor T sludge after IHE T sludge at IP

TerraNova® Ultra Operating data (2): 2018-06-25 to 2018-07-06, Normal Operation from Start up

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T sludge in reactor T sludge after IHE T sludge at IP

TerraNova® Ultra Ausgezeichnete Innovationskraft