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SEPARATION TECHNOLOGIES
Industrial technology perfectly adapted to the treatment of waste water
sludge, that ensures:
Operating principleThe decanter uses the principle of natural sedimentation, accelerated by centrifugal force (over 3000 g).
Axial feed
Clear water
Recovery of the liquid phase by overflow
Recovery of the solid phase by gravity
Bowl: High rotation speed for optimum phase separation
Distributor (feed chamber): Sludgesubjected to centrifugal force
Scroll: Sludge conveyanceand compacting
• Best performance (dryness, capture rate…)
• Continuous and fully automated sludge dewatering plant
• Polyvalent operation (dewatering, thickening with or without polymer…)
• Optimum flexibility (adjustment of operating parameters during operation)
• Well-proven sturdiness…
The decanter can be integrated into any additionaldownstream treatment, allowing your dewateringsystem to evolve in accordance with new re g u l a-tions.
• L i m i n g• Agricultural use• C o m p o s t i n g• L a n d f i l l• D ry i n g• Incineration or co-incineration
The decanter allows treatment of difficult and va-rying sludge qualities with the following benefits:
• No operator supervision (automatic operation)• No mineral re a g e n t s• Simplified civil engineering (very compact installation)• No prior thickening, there f o re no double flocculation (dire c t
dewatering immediately downstream of a clarifier or aera-tion pool)
• Clean, efficient and water-saving technology• Reduced and easy maintenance …
The Andritz decanterA solution to the crucial problem of future sludge treatment
The decanter centrifuge equipped with a specific control system for thickening applications deliverssludge of constant DS content to feed for instance an anaerobic digesters with optimised performance.
Polyvalent High-Performancerotor
Designed by our R&D team to obtainoptimum dryness and clarificationin dewatering and/or thickening
New in-line design
aesthetic, compact and functional
New abrasion protection
replaceable tiles all along the scroll flightfor optimised life span
Speed adjustment by frequencyconverters
e n s u res maximum flexibility
Patented energy recyclingsystem
f rom secondary to main motor (re d u c e spower consumption)
Control and regulating
• the user-friendly STARDEC unit per-mits fully automatic operation • t u rn-key solutions taking into accountthe peripheral equipment
Special gearboxes
robust and compact
Sludge recovery
by a shaftless screw conveyor, withwash water draining off at the bottomof the screw
Stainless steel
for an exceptional life span (304L, 316L,Duplex…)
Pond depth
easily adjustable
Easy dismantling andmaintenance
(scroll extraction, lubrication…)
De-aerator at effluent outlet
clean, dry and odourless centrifugationroom
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Our decanter centrifuge fits in with our customers’ needs• Our rotor is the most polyvalent
available on the market. Its spe-cific design and open flight perm i tuse of the entire volume and pro v i d eextremely good clarification results;extraction of sludge is simplified bythe angle, and the acceleration(3000G) is a good compromise bet-ween the highest dryness and theright power consumption.
• The main operating parameterscan be adjusted independentlyof one another and with highaccuracy: bowl speed (efficiency of
solid/liquid separation), relative scro l lspeed (residence time, hence dry-ness), pond depth (clarification). Anunrivalled operational convenience.
• The polymer dosage is optimi-s e d : Flocculation is carried out at thefeed in order to leave suff i c i e n tcontact time for formation of re s i s t a n tflocs; the distributor (feed chamber)shape avoids swift polymer passagewith centrate whose residence timein the decanter is very short. We l l -balanced operating costs.
• Sizing is perf o rmed according tosludge type, flow, expected per-f o rmance, operating time, powerconsumption, and polymerdosage… We provide advice andinvestigate your project with you…
• ANDRITZ service: "listen, desi-gn, check, support" are our keya x i o m s . Our expertise and know-how are appreciated all over theworld !
Construction
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ABSORBED POWER (%) 6
INNOVATION:the co-axial driving system (D5LNTC, D5LLTC)The direct coupling of a synchronous motor to the reducer has a lot of advantages : reduced powerconsumption, extreme compactness, more and more reliability, simplified maintenance…
The Andritz strongpoints• Ultra-modern factory symbolising the company’s pro-
gressive outlook.• Testing / R&D Depart m e n t equipped with an eff i c i e n t
laboratory and many mobile test units.
• A Customer Services Department offering you sparep a rts, equipment overhauls and repairs, preventive dia-gnosis and maintenance contracts, training sessions,second-hand or rental machines.
From D1 to D12 A range of decanters with scale-up factors specifically adapted to treat any required hydraulic flow and mass throughput.
Approximate flow rate (m3/h) suspended solids ≤ w/w (feed concentration)
Type D1 D2L D3L D3LL D4L D4LL D5L D5LL D6L D6LL D7L D7LL D10LL D12LL
1 6 13 18 28 34 42 65 75 85 100 125 200 280
A range offering variable geometry in terms of diameter, length, and rotor angle.
Models
C.71.dec.f.02.05
Main applications
FranceANDRITZ SAS, Vélizy-VillacoublayPhone +33 1 39 26 05 50Fax +33 1 39 26 05 60E-mail: [email protected]
United KingdomANDRITZ Ltd, Newcastle-under-LymePhone +44 1782 56 5656Fax +44 1782 56 6130E-mail : [email protected]
USA - CanadaANDRITZ-RUTHNER, Inc., Arlington (TX)Phone +1 817 465 5611Fax +1 817 468 3961E-mail : [email protected]
For a comprehensive list of our offices all over the world or information about our products andservices, please refer to our web site www.andritz.com/ep
ChinaANDRITZ Technologies Ltd, Foshan (Guangdong Province)Phone +86 757 829 69 228Fax +86 757 829 69 208E-mail : [email protected]
SingaporeANDRITZ SINGAPORE Pte Ltd, SingaporePhone +65 6863 4465Fax +65 6863 4482E-mail : [email protected]
RussiaANDRITZ Rep. Office, MoscowPhone +7 095 956 3836, Fax +7 095 956 9087E-mail : [email protected]
BrasilANDRITZ SEPARATION Industria e Comercio deEquipamentos de Filtracao Ltda, PomerodePhone +55 47 387 8240, Fax +55 47 387 8440E-mail : [email protected]
South AfricaANDRITZ Pty Ltd, EdenvalePhone +27 11 454 3350, Fax +27 11 454 3381E-mail : [email protected]
Austria (HEAD OFFICE)ANDRITZ AG, GrazPhone +43 316 6902 2318Fax +43 316 6902 463E-mail : [email protected]
• thickening and dewatering of sludge fromwaste water or water treatment plants
• treatment of pig manure• 3 phase separation…
• solid/liquid separation for industry(clarification, classification, ...)