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Sludge2Energy
Energy self-sustaining sewage sludge
utilisation process
A.T.E. HUBER Envirotech Private Limited
www.atehube...
About Sludge2Energy
The Sludge2Energy system safely treats
and disposes sludge and recovers useful
nutrients with zero net...
About Sludge2Energy
▪ Increasing sludge production and stringent sludge disposal norms have forced many municipal organisa...
▪ Efficiently combines drying and thermal utilisation of
sewage sludge in a fluidised bed furnace
▪ A wide variety of muni...
Sludge2Energy – features and versions
▪ Plant is tailor-made to the customer’s sewage sludge volumes and requirements
▪ In...
Sludge2Energy process flow diagram – hot water boiler variant
▪ Sludge acceptance and storage area for dewatered sewage sludge
(1) to balance varying supply volumes
▪ Full drying of a ...
▪ Staged combustion air system to minimise contaminants, such as
dioxins, carbon monoxide, organic pollutants and nitric o...
Sludge2Energy process flow diagram – steam boiler variant
Sludge2Energy process – steam boiler variant
▪ Sludge acceptance and storage area for dewatered sewage
sludge (1) to balan...
Sludge2Energy process – steam boiler variant
▪ Staged combustion air system to minimize contaminants, such as
dioxins, car...
Sludge2Energy – references
Thermal waste utilisation plant, Dumrohr, Austria Thermal waste utilisation plant, Moscow, Russ...
About us
HUBER SE
HUBER SE, headquartered in Berching, Germany, is a global company active
in the fields of water, wastewa...
THANK YOU
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Sludge2Energy: Energy self-sustaining sewage sludge utilisation process

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Increasing sludge production and stringent sludge disposal norms have forced many municipal organisations and sludge disposal companies to look for alternatives for sludge disposal and solutions to recover nutrients. The Sludge2Energy system safely treats and disposes sludge and recovers useful nutrients with zero net energy addition. Click on the link below to learn more.

Sludge2Energy: Energy self-sustaining sewage sludge utilisation process

  1. 1. Sludge2Energy Energy self-sustaining sewage sludge utilisation process A.T.E. HUBER Envirotech Private Limited www.atehuber.com v4.0 Dec 2020
  2. 2. About Sludge2Energy The Sludge2Energy system safely treats and disposes sludge and recovers useful nutrients with zero net energy addition.
  3. 3. About Sludge2Energy ▪ Increasing sludge production and stringent sludge disposal norms have forced many municipal organisations and sludge disposal companies to look for alternatives for sludge disposal and solutions to recover nutrients ▪ Rising disposal and transportation costs, the need for economic use of resources, and the recovery of phosphorus from sewage sludge ash, has led many to turn to thermal sewage sludge utilisation ▪ HUBER and WTE have developed an innovative ‘sludge2energy’ process to utilise sewage sludge. This energy self-sufficient method is based on a combination of a medium-temperature belt dryer with subsequent combustion in a fluidised bed furnace ▪ Sludge2energy process enables sustainable waste management by thermally consuming sewage sludge (at the wastewater treatment plant) by incineration. Co-generated heat is used for dryer operation ▪ Sludge mass is reduced by drying and incineration to about 10%. The remaining ash can be deposited at a separate site. It is possible to recover the phosphorus from the ash through an additional process
  4. 4. ▪ Efficiently combines drying and thermal utilisation of sewage sludge in a fluidised bed furnace ▪ A wide variety of municipal sewage sludges can be utilised thermally, and due to an efficient use of energy, without the need for any external energy. ▪ Compact, modular and functional design with minimum space requirements ▪ Low investment and operational costs due to the optimised thermal drying and utilisation ▪ Optimal sewage sludge quantity and mass reduction ▪ Minimised expenses and costs for sewage sludge transport ▪ Long-term cost certainty and disposal safety Benefits of the Sludge2Energy process ▪ Dry flue gas cleaning process without generation of wastewater ▪ Fully automatic operation 24×7, with a high plant availability of 8,000 hours/year ▪ High flexibility of sewage sludge utilisation ▪ Production of phosphorus-rich sewage sludge ash and optional phosphorus recovery ▪ Optimised flue gas cleaning depending on customer requirements (site requirements, phosphorus recovery) ▪ Optional power generation depending on specific individual conditions and plant size
  5. 5. Sludge2Energy – features and versions ▪ Plant is tailor-made to the customer’s sewage sludge volumes and requirements ▪ Individual components can be varied to suit customer-specific requirements ▪ Maximum performance and economic efficiency is achieved by selecting the best suitable technical solution ▪ Depending on the specific site conditions, two design versions are available: ▪ Hot water boiler ▪ Steam boiler
  6. 6. Sludge2Energy process flow diagram – hot water boiler variant
  7. 7. ▪ Sludge acceptance and storage area for dewatered sewage sludge (1) to balance varying supply volumes ▪ Full drying of a partial flow in a belt dryer (2) and heat supply through incineration ▪ Condensation of dryer vapour, introduction of vapour/air into fluidised bed furnace (6) as combustion air ▪ Intermediate storage bunker (3) for dried sewage sludge ▪ Mixing (4) of dewatered and fully dried sludge for auto-thermal incineration ▪ Flexible combustion control including adjustable conveying line for combined sludge input ▪ Stationary fluidised bed furnace (5) with continuous discharge of bed material and contaminants ▪ Burner for plant start-up and shutdown and balancing unsteady operating states ▪ Waste heat boiler (6) for heat transmission from flue gas to useable hot water ▪ Utilisation of the hot water for heat supply to internal consumers, such as sludge dryer Sludge2Energy process – hot water boiler variant
  8. 8. ▪ Staged combustion air system to minimise contaminants, such as dioxins, carbon monoxide, organic pollutants and nitric oxides ▪ Denitrification according to the selective non-catalytic reduction (SNCR) method as first stage of flue gas cleaning ▪ Fabric filter for pre-separation (7) of the phosphorus-rich flue ash from the flue gas ▪ Dry flue gas cleaning (8) with sorbent dosing to remove acid pollutants, dioxins and heavy metals (for e.g., Hg) ▪ Fabric filter (9) (sorption filter) to remove reaction products and dust from the flue gas ▪ Recirculation of the sorption residues to improve separation efficiency and reduce sorbent consumption ▪ Measurement station in chimney (12) for the control of all legal emission limits ▪ Ash discharge and storage of reaction products (11) separately from phosphorus-rich bed ash, boiler ash and pre-separated ash (10) Sludge2Energy process – hot water boiler variant (contd.)
  9. 9. Sludge2Energy process flow diagram – steam boiler variant
  10. 10. Sludge2Energy process – steam boiler variant ▪ Sludge acceptance and storage area for dewatered sewage sludge (1) to balance varying supply volumes ▪ Partial drying in a contact dryer (2) for auto-thermal incineration of the sludge ▪ Flexible combustion control including adjustable conveying line for controlled sludge input (3) ▪ Condensation of dryer vapour, introduction of vapour/air into the fluidised bed furnace (4) as combustion air ▪ Stationary fluidised bed furnace (4) with continuous discharge of bed material and contaminants ▪ Burner for plant start-up and shutdown and balancing unsteady operating states ▪ Waste heat boiler (5) for heat transmission from flue gas to useable vapour ▪ Energetic utilisation of the vapour via a counter-pressure steam turbine (12) with generator ▪ Utilisation of the exhaust steam for heat supply to internal consumers, such as sludge dryer
  11. 11. Sludge2Energy process – steam boiler variant ▪ Staged combustion air system to minimize contaminants, such as dioxins, carbon monoxide, organic pollutants and nitric oxides ▪ Denitrification according to the selective non-catalytic reduction (SNCR) method as first stage of flue gas cleaning ▪ Fabric filter for pre-separation (6) of the phosphorus-rich flue ash from the flue gas ▪ Dry flue gas cleaning (7) with sorbent dosing to remove acid pollutants, dioxins and heavy metals (for e.g., Hg) ▪ Fabric filter (8) (sorption filter) to remove reaction products and dust from the flue gas ▪ Recirculation of the sorption residues to improve separation efficiency and reduce sorbent consumption ▪ Emission measurement station in chimney (11) for the control of all legal emission limits ▪ Ash discharge and storage of reaction products (10) separately from phosphorus-rich bed ash, boiler ash and pre-separated ash (9)
  12. 12. Sludge2Energy – references Thermal waste utilisation plant, Dumrohr, Austria Thermal waste utilisation plant, Moscow, Russia Sewage sludge utilisation plant, Bello, Colombia Sludge incineration plant under execution at Halle-Lochau, Germany Waste incineration plant, Kuwait Huber Belt Dryer, Nova Gorica, Slovenia
  13. 13. About us HUBER SE HUBER SE, headquartered in Berching, Germany, is a global company active in the fields of water, wastewater and sludge treatment. More than 1000 employees worldwide develop and manufacture products, manage projects and develop system solutions for municipalities and industries. With more than 45,000 installations worldwide HUBER is one of the internationally leading companies in this field. HUBER's adapted treatment processes contribute to the solution of the global water problems. WTE EVN Group WTE Group provides designing, construction, financing and operation of engineering plants for wastewater disposal, water supply, energy production and thermal waste utilisation. WTE with their expertise develop future-proof solutions which set the international standards in terms of energy efficiency, consumption of resources and investment costs. WTE utilise all energy sources in the process chain to ensure the energy self- sufficient operation and environmental sustainability of the plants. Sludge 2 Energy GmbH Sludge 2 Energy GmbH offers comprehensive expertise of HUBER SE and WTE GmbH in planning, building and operating plants in the fields of wastewater and sludge treatment, thermal waste utilisation, and especially the know-how and knowledge of process-technical, energetic and logistic synergies in the field of sewage sludge treatment and develop a cost-effective and reliable modular system that meets specific customer requirements. A.T.E. Huber Envirotech Private Limited A.T.E. HUBER Envirotech Private Limited (AHET) is a joint venture between A.T.E., India, and HUBER SE, Germany. AHET Provides comprehensive solutions for wastewater treatment, recycling and sludge management for industry and municipal sector. AHET has developed innovative technologies for industrial waste water treatment, recycle and zero liquid discharge
  14. 14. THANK YOU
  • anujbhagwati

    Jun. 25, 2021

Increasing sludge production and stringent sludge disposal norms have forced many municipal organisations and sludge disposal companies to look for alternatives for sludge disposal and solutions to recover nutrients. The Sludge2Energy system safely treats and disposes sludge and recovers useful nutrients with zero net energy addition. Click on the link below to learn more.

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