Strict rules and regulations involving the handling and disposal of sludge, and increasing cost of sludge disposal has made it all the more important for industries to produce as little sludge as possible. Technology for disposal of solid waste has moved from physico-chemical treatment to biological treatment, thereby cutting down the sludge production substantially, but the quantity of sludge generated is still huge. A.T.E. HUBER offers complete sludge management solutions for industries across verticals. Click here to know more on how to manage and reduce your sludge and increase your profitability. For more information visit us at www.atehuber.com.

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A.T.E. HUBER Envirotech Private Limited
www.atehuber.com
V3.0 June 2018
Sludge management solutions from
A.T.E. Envirotech Private Limited, India
and HUBER SE, Germany

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Sludge management solutions
Sludge
screening
Sludge
thickening
Sludge
dewatering
Sludge
drying
A.T.E. brings innovative technologies
from HUBER SE, Germany
for complete sludge management
Dried sludge -
fertilizer or
secondary fuel

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V2.0 May 2017
Sludge screening

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Sludge screening
Sludge screening with STRAINPRESS® sludge cleaner
Coarse material separator for municipal/industrial sludge and process
wastewater

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STRAINPRESS® sludge cleaner
Before
After
Unscreened
dewatered
sludge
Screened
dewatered
sludge

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STRAINPRESS® – key features
 Screening and dewatering in one step
 Interchangeable screening aperture
 Integration in pressurised pipelines
 Enclosed system
 Flows up to 100 m³/h
 Controlled discharge pressure for optimum
dry product
 Typical screenings TS > 40 %
 Operates without wash water
 Manufactured entirely from stainless steel

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STRAINPRESS® – benefits
Protection of pumps and mixers
 Reduced downstream maintenance
 Improved process efficiencies
Removal of screenings, hairs, and fibers
from sludge and process water
 Reduced operational costs
 Higher process availability
Screening & dewatering in a single step
 Reduced sludge hauling costs
 Improved sludge utilisation
Inline installation
 Retrofits current piping
 Prevents emission of odours, aerosols, corrosive gases, explosive
atmospheres

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STRAINPRESS®– where is it applied?
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1
3
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1. Wastewater before WWTP
(in specific industries like
chemical, paper etc.)
2. Wastewater before
nitrification / aeration
process in specific industries
3. Primary sludge
4. Secondary sludge
5. Thickened sludge
6. Digested sludge

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Food waste
De-watered screenings
STRAINPRESS® – applications
For screening of wastewater
sludge from:
 Raw / primary sludge
 Scum / grease
 Filtrate / floating sludge
 Co-fermentation
 Digested sludge
 Thermal hydrolysis sludge
 Bio waste
 Recycling
 Pulp and paper
 Wood and fiber processing
 Bio fuel
 Brewery
 Chemical industry

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Sludge thickening

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Sludge thickening
Excess sludge DS < 1% Thickened sludge DS > 5%
 volume reduction
> 80%
 Thickened sludge is still pumpable
 Minimised costs for transportation
 Minimised costs for dewatering
 Optimised digestion process
Innovative mechanical thickeners

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Sludge thickening solutions
Disc thickener S-DISC Screw thickener S-DRUM
Capacity upto 40 m³/h (400 kgTS/h) Capacity upto 110 m³/h (1500 kgTS/h)

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Disc thickener S-DISC – features and benefits
 Low investment costs
 Low operating costs (polymer, electricity, wear parts,
wash water)
 Encapsulated design; option for ventilation
 Small footprint
 No lubrication points
 Slowly rotating, low wear stainless steel filter disc
 Easy access to all moving parts
 Lowest operator attention required
 Lowest manpower requirements (operation and
maintenance)
 Noise level < 70 db(a)
 No vibrations
 Easy set up of mobile installations

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Screw thickener S-DRUM – features
 Inclined wedge wire basket
 Slowly rotating conveyor
screw inside
 Periodically travelling spray
basket
 Static feed (overflow from
floc tank)

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 Benefits compared to centrifuges, belt and
drum thickeners:
 Outstanding thickening results (> 7 % ts)
 Rugged design
 High operational reliability
 Easy automation
 Minimum wash water demand
 Encapsulated design; option for ventilation
 Lowest operator attention required
 Noise level < 70 db(a)
 No special requirements regarding support
structure
Screw thickener S-DRUM – benefits

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S-DISC/S-DRUM – applications
Ideal for thickening of
 Municipal sludges
 Biological sludges
 Blended sludges
 Tertiary sludges
 Industrial sludges
 Meat processing
 Beverage processes
 Dairies
 Pharma
 Textile
 Leather
 Food and many more...

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Sludge dewatering

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Sludge dewatering
Thickened sludge DS > 5% Dewatered sludge DS > 20%
volume reduction
> 97%
 Reduction in volume
 Minimised costs for transportation
 Minimised storage space
Sludge dewatering with – Q-PRESS®

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Q-PRESS® – features
 High dewatering
 Continuously adjustable counter pressure at the discharge end
 Filtrate discharge enhanced by gravity due to inclined installation
 Unique scraper system for permanent cleaning of the inner filter
surface
 < 1.5 rpm screw rotation speed
 Special filter dividing mechanism
 Compact design and small footprint
 Easy connection of the screw conveyor
 Optional tube flocculator
 Simple control system
 Vibration-free, virtually noiseless operation
 Fully enclosed design
Screw press – Q-PRESS®

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Q-PRESS® – benefits
 Minimum operation costs
 Low total investment costs
 Outstanding energy efficiency
 Specific power consumption < 8 kWh/tDR (tons of dry residue)
 Minimal operator attention (< 20 min/day)
 High solids capture rate > 97%
 Virtually no wear because of < 1.5 rpm screw rotation speed
 Defined sludge volume reduction in the screw press
 Continuous dewatering
 Reliable operation with less downtime
 Easy access through large inspection openings
 Minimal space requirements for maintenance
 Simple self-monitoring control strategy
 Proven in hundreds of installations

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Q-PRESS® – additional benefits
Benefits compared to centrifuges, belt and plate filter
presses
 Lowest investment costs
 Competitive dewatering performance (even on poor sludges)
 Encapsulated design; option for ventilation
 Easy access to all moving parts
 Minimum operator attention required (very important on small
WWTP)
 Lowest manpower requirements (for operation and maintenance)
 Easy automation
 Hardly any wear parts
 Crumbly cake structure (even at low cake solids)
 Noise level < 70 db(a)
 No vibrations
 No special requirements regarding support structure
Dewatered sludge DS > 25%

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Ideal for dewatering of
 Municipal sludges
 Primary sludges
 Secondary sludges
 Precipitation sludge
 Digested sludge
 Flotated sludge
 Membrane sludge
 Septage
Q-PRESS® – applications
 Industrial sludges
 Meat/food processing
 Pulp and paper
 Wet fermentation
 Leather/textile sludges
 Wash water recycling

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Sludge drying

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Sludge drying
Dewatered sludge DS > 20% Dried sludge DS > 80%
Make waste a most valuable resource
 In the most efficient way
 In the most reliable way
 In the most confortable way
 In the most sustainable way
 In the most clever way
Create value from waste!
Solar active sludge dryer – SRT Thermal sludge belt dryer – BT

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Solar active sludge dryer – SRT
HUBER solar active dryer SRT Dried sludge DS > 90%

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Solar active sludge dryer SRT – process
 The special sludge turning system SOLSTICE® of HUBER SRT performs spreading,
granulation, turning and mixing of sludge
 The sludge becomes open-porous, new contact surfaces for evaporation are continuously
created
 Dewatered sludge is continuously fed on one end, dry granulate is produced at the other end
SOLSTICE®

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SRT – process
 Due to the special features of the sludge turning assembly, particularly its back mixing
function, an open porous and slightly wet sludge bed is maintained, generating neither odour
problems nor dust
 The sludge is dry enough to prevent odour-generating biological processes, but still wet
enough to prevent generation of dust under mechanical stress
Parallel installation of HUBER Solar Active Dryer SRTFully automated ventilation for an optimal drying
process

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SRT – key features
 Excellent sludge mixing and aeration
 True back-mixing of sludge due to sludge transport in
shovels
 The stainless steel design ensures long product life and
corrosion resistance in aggressive media
 Modular system providing for the option of a fully
automatic plant
 Minimised odour due to direct feeding via a distribution
screw
 Season-independent drying with high-efficiency floor
heating

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Thermal sludge dryer – BT belt dryer
Medium temperature
sewage sludge dryer

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BT belt dryer – key features
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5
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7
10
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4
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1. Screw press for sludge
dewatering
2. Sludge bunker with thick sludge
pumps
3. Pelletiser
4. Belt dryer
5,6,7. Granulate discharge to big
bags, open containers or silos
8. Condensation unit
9. Exhaust air scrubber
10. Bio-filter to exhaust air
11. Wastewater heat utilisation
(power plant, boiler, heat pump,
CHP plant)
Power plant
Heat pump
Boiler
CHP
plant

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BT belt dryer – key features
HELIX – loop air streaming
 High efficiency
 Small footprint
 Small exhaust air treatment
 Low electrical and thermal power
demand
Unique feeding system
 Best sludge extruder available
 Low dust formation
 Save operation
Modular assembly
 Easy installation on site
Throughput adjustment
 Easy operation
Flexible heating utilisation
 Low operational costs

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HUBER, SE
Germany
• Innovative technologies for
wastewater treatment
• Proven products with an
installed base of over 40,000
• Wide experience with
installations across 60
countries
A.T.E. ENVIROTECH
India
• Industrial wastewater
domain expertise
• Proven project execution
track record
• Wide experience of treating
industrial wastewater
across 10 countries
Complete sludge management solution from….

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Contact us at….
A.T.E. Envirotech Private Limited
CTS 689, A-19,
2nd Floor, Bhagwati House,
Veera Desai Road,
Andheri (West),
Mumbai - 400053, India
+91 22 46121212
huber@ateindia.com
Huber SE
Industriepark Erasbach A1
D-92334 Berching
Germany
+49 8462 201-0
+49 8462 201-810
info@huber.de

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THANK YOU