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Thermylis 2S - 2-stage sludge incineration process
Thermylis 2S - 2-stage sludge incineration process
Thermylis 2S - 2-stage sludge incineration process
Thermylis 2S - 2-stage sludge incineration process
Thermylis 2S - 2-stage sludge incineration process
Thermylis 2S - 2-stage sludge incineration process
Thermylis 2S - 2-stage sludge incineration process
Thermylis 2S - 2-stage sludge incineration process
Thermylis 2S - 2-stage sludge incineration process
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Thermylis 2S - 2-stage sludge incineration process

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Drastically reduce energy costs using the heat value of sludge

Drastically reduce energy costs using the heat value of sludge

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  • 1. Thermylis™ 2S 2-STAGE SLUDGE INCINERATION PROCESS BIOSOLIDS DRASTICALLY REDUCE ENERGY COSTSP-PPT-B-011-EN-1107 USING THE HEAT VALUE OF SLUDGE
  • 2. BIOSOLIDS BIOSOLIDES CONTENTS Thermylis™ 2S • The stakes of incineration • The Thermylis™ 2S process • Key points of the process • Functional principle • Advantages of the Thermylis™ 2S • References of the Thermylis™ 2S • Case study: Kielce, POLAND 2 2
  • 3. BIOSOLIDS BIOSOLIDES THE STAKES OF INCINERATION Thermylis™ 2S Considerably reduces the quantity of sludge to be disposed, Eliminates nuisances (odors, storage) and health risks, Avoids propagation of pollutants (including endocrine disruptors) contained in urban wastewater, Completely eliminates the problem of sludge 3 3
  • 4. BIOSOLIDS BIOSOLIDES THE Thermylis 2S PROCESS Thermylis™ 2S2 S («2 Stages») = 2 steps: drying + incineration 4 => Based on the principle of energy recovery 4
  • 5. BIOSOLIDS BIOSOLIDES KEY POINTS OF THE PROCESS Thermylis™ 2S FIELD OF APPLICATION: The Thermylis™ 2S is perfectly adapted to sludge with low volatile matter content (<60%) and low calorific value. For this reason, it is suitable for both urban and industrial wastewater sludge: - Digested sludge, - Tertiary sludge - All weakly dehydrated sludge MAXIMUM DRYNESS: •The dryness of dehydrated sludge to be incinerated must be between 17 and 25% dry matter. 5 5
  • 6. FUNCTIONAL PRINCIPLE: THE STAGES1 Pre-dryer Eliminates the quantity of water in the sludge before incineration 22 Fluidized sand bed incinerator 1 The incineration is done at 850°C 3 continuously for optimal elimination of organic matter and endocrine substances 43 Smoke cooled to be treated The energy is recovered to supply the pre- dryer for a reduced overall energy balance.4 Exchanger Recovers the energy in the smoke to heat the pre-dryer => 0 fuel addition required 6
  • 7. BIOSOLIDS BIOSOLIDES ADVANTAGES OF THE Thermylis 2S Thermylis™ 2S SAVINGS: • Nearly-zero fuel consumption (fuel, gas) due to use of the energy produced by the combustion, • Sludge volume reduction reduces transport and landfill costs. ENVIRONMENT: • Very low environmental impact, • Near-zero primary energy consumption, • Reduction of CO2 emissions , • Complete elimination of pathogens, germs and hormonal molecules strengthening community health and safety. HIGH PERFORMANCE: • Ultimate sludge volume reduction (between 7-10% of the volume of the dehydrated sludge), • Maximum combustion yield, • Automatic, non-stop operation(24/7). 7 7
  • 8. Thermylis2S REFERENCES Commissioni Type Dryness of sludge Project Capacity ng date of sludge entering unit Digested sludgeValenton (94), France 1,200,000 PE 2011 Dried sludge fines 28%Kielce, Poland 300,000 PE 2011 Digested sludge 20%Gdansk, Poland 800,000 PE 2011 Digested sludge 22% Mixed sludgeShenzhen, China 3,000,000 PE 2013 Biological sludge 20% 8
  • 9. CASE STUDY: KIELCE, POLANDCONTEXT: DESIGN:• Construction of a WWTP of 300,000 PE • Sludge treatment line: Digestion, dehydration by centrifuge,• Client: Wodociagi kieleckie incineration• Commissioning of the plant: mid-2011 • Dryness of the sludge entering theSITUATION: incineration unit: 20%The client needed to bring the plant up to current codecompliance and thus overhauled the entire digestion • Capacity of the Thermylis™ 2S:step to increase its capacity. Furthermore, as sludge 740 kg dry matter/dayspreading is a subject of debate in Europe, the clientseized the opportunity to include a sludge incineration • 3.2 T of sludge/h to be treatedunit with the digestion. leaving the dehydrationDEGREMONT provides this incineration unit in aconsortium with WTE. 9

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