THE HISTORICAL EVOLUTION AND EMERGENCE OF A...

THE HISTORICAL EVOLUTION AND EMERGENCE OF A NEW GENERATION OF SLUDGE THICKENING CENTRIFUGE

February, 2011 HWEA Presentation

Presented by:Robert Havrin, Director of Technology Michael Kopper, CEO

PRESENTATION OUTLINEIntroduction to CentrisysCurrent Market DynamicsProperties of WASWastewater Thickening Centrifuges

Pre-1978 Competition1978 to 2010 Era of the Hydraulic Assist2010 and beyond

Introduction to ECO-HP 23


Only US manufacturer of decanter centrifuges for the municipal market

CENTRISYS CORPORATION

Kenosha Wisconsin Headquarter Facilities


CENTRISYS CORPORATIONFirst centrifuges manufactured by Centrisys were built for the City of Honolulu in 1989


Wisconsin Manufacturer of the Year Award 2008

CENTRISYS CORPORATION

2011 Centrisys will be featured this year on the fourth season of the syndicated TV show “The Worlds Greatest ……”

http://centrisys.us/about/about-centrisys


Centrisys is honored for the opportunity to announce our newest technology

CENTRISYS ECO-HP 23 Installation Costs ($/GPM) Reduced 35 – 50 %

Reduced Operating CostsExpanded no-polymer performance capability100 – 200 % higher throughputs at 50 – 75 % less polymer than GBTand RDT desgins ~ 50 % reduction in HP/GPM versus other centrifuges

Maintenance Costs Reduced 25 - 50 % by Minimizing Causal Effects and Using Field Replaceable Inserts


CURRENT MARKET DYNAMICSFebruary, 2011 HWEA Presentation

PROPERTIES OF WASFebruary, 2011 HWEA Presentation

Material Balance ConsiderationsFeed @ 0.25 – 1.3 %Cake @ 3.0 – 10.0 %Recovery @ 85 – 99 %

Physical AttributesSludge Volume Index/Instantaneous Sludge Settling VelocityTotal Volatile SolidsSludge Viscosity

PROPERTIES OF WASFebruary, 2011 HWEA Presentation

Sludge Viscosity

DESIGN CHALLENGES TO THICKEN WAS

Amorphous Trash/ Grit


1) Overcome the high polymer cost from gravity belt thickener and rotary drum thickener.

2) Reduce the polymer cost to improve the digester function as well as the dewatering after digesters

3) Overcome the historically high power and maintenance cost from centrifuges.

4) Reduce the capital cost for the DAF systems as well as the centrifuges

5) Centrifuge specifically: prevent amorphous trash, plastics and sand/ grid to great problems with the centrifuge operation

WASTEWATER THICKENING CENTRIFUGES



Pre 1978 Technology - Competive Technologies

Vertical Basket High Speed Disk

Reference: Moll, Richard T. and Letki, Alan G., “The Role of Centrifuges in Minimizing/Eliminating the Use of Chemical Additives in Dewatering” - “Thickening of Industrial Wastes”, 34th Annual Purdue Industrial Waste Conference, May 8 – 10, 1979.




• Precursors From Mining, Chemical & Food Markets• Wastewater Market Design Evolution



Pre – 1978 Technologies Performance Summary

.

BATCH HIGH SPEED CONTINUOUSDECANTER NOZZLE DISK DECANTER

PROCESS PERFORMANCEFeed Rate, GPM/unit max 40 - 60 200 - 400 200 - 300Recovery of Insolubles, % w/w + 90 + 90 + 90Cake Solids, % w/w ts 8 - 13 3 - 6 6 - 12Polymer Dosage, #/ ton db No polymer performance 0 0 NA Performance with polymer NA NA 10 - 20

MECHANICAL RELIABILITYDowntime Low High MediumMaintenance Costs Low High MediumOperating Costs Low Low High

TABLE 1. SUMMARY OF PRE-1975 CENTRIFUGAL SLUDGE THICKENING TECHNOLOGIES



1978 – 2010 Era of the Hydraulic AssistSchematic of an Enabling Technology

.

Post – 1978 First Hydraulic Assist Modification

Pre – 1978 Rotating Assembly



1978 – 2010 Era of the Hydraulic AssistA Commercial and Technical Breakthrough

.

CONTINUOUSDECANTERPRE 1978 No Polymer Polymer

PROCESS PERFORMANCEFeed Rate, GPM/unit max 200 - 300 600 1000Recovery of Insolubles, % w/w + 90 +85 90Cake Solids, % w/w ts 6 - 12 5 - 6 5 - 6Polymer Dosage, #/ ton db No polymer performance NA Performance with polymer 10 - 20 0 6

MECHANICAL RELIABILITYDowntime Medium Low LowMaintenance Costs Medium Low LowOperating Costs High Low Low

HYDRAULIC ASSIST

TABLE 2. COMPARISON OF HYDRAULIC ASSIST TO PRE-1978 WAS THICKENING TECHNOLOGY

CONTINUOUS DECANTER



1978 – 2010 Era of the Hydraulic AssistA Competitive Threat – The Humboldt Type “B”

.

S H H vs S S H H vs S S H H vs S

Test 1 - WAS 600 682 13.7 81.1 86.0 6.0 6.3 5.8 -7.9Test 2 - WAS 450 495 10.0 86.0 87.5 1.7 6.6 6.2 -6.1Test 3 - 80 % WAS, 20 % Primary 455 465 2.2 84.5 86.5 2.4 6.3 6.2 -1.6

Average 501.7 547.3 8.6 83.9 86.7 3.4 6.4 6.1 -5.2

Flow rate, gpm Recovery, % w/w ins (85 goal)Cake solids, % w/w ts (6 goal)

TABLE 3. Comparison of Sharples PM-95000 TA BD to Humboldt B6-1



1978 – 2010 Era of the Hydraulic AssistWastewater Design Evolution

.

CONTINUOUS DECANTER

Settling Enhancers

Accelerator Technology

Geometric Optimization

Hydraulic Assist

Pneumatics

Nozzle Bowl

CENTRISYS ECO-HP 23CENTRISYS ECO-HP 23

Dynamic Pond Adjustment



Centrisys ECO-HP 23Elimination of Conical Bowl Increases Capacity

Proprietary technology used in the elimination of the cone

Complete bowl length for increased clarification

Increased pool depth for added G-volume

50 – 100 % increased “no polymer” capacity/sq ft of floor space



2010 and BeyondHydro-Pneumatic Control of Cake Solids

.



Centrisys ECO-HP 23Best in Class Control of Cake Solids Consistency

Sample number Feed tss Cake ts Feed tss Cake ts

1 0.44 3.62 0.84 8.212 1.03 3.83 0.61 7.303 0.95 3.82 0.82 10.54 0.92 3.75 0.99 7.585 1.62 3.41 1.11 9.046 0.54 4.78 1.00 8.117 0.78 4.33 1.10 12.18 0.89 5.12 0.85 8.359 0.9 3.58 0.89 7.9110 1.07 3.36 1.01 8.4511 0.33 3.08 1.09 9.4412 0.72 4.22 0.81 9.7513 0.89 3.98 1.05 7.7314 0.77 3.37 1.00 6.9515 0.78 4.42 1.15 9.9516 0.88 3.89 0.79 8.5317 0.97 4.23 0.91 6.7818 0.69 3.99 1.93 7.67

Range, % w/w

# % # %3.0 - 3.5 4 22.2 0 0.03.5 - 4.0 8 44.4 0 0.03.5 - 4.5 12 66.7 0 0.03.5 - 5.0 14 77.8 0 0.03.5 - 6.0 14 77.8 0 0.0

ECO HP XM-706Lab Analysis, % w/w

TABLE 4. CONTROL OF CAKE SOLIDS

CONTROL OF CAKE SOLIDSECO HP XM-706



CENTRISYS ECO-HP 23CENTRISYS ECO-HP 23

ENVIRONMENTAL DESIGN LEADING TECHNOLOGY DEVELOPMENT INTO OTHER INDUSTRIES

ENVIRONMENTAL DESIGN LEADING TECHNOLOGY DEVELOPMENT INTO OTHER INDUSTRIES

Municipal WastewaterMunicipal Wastewater

Green InitiativesGreen Initiatives



CENTRISYS ECO-HP 23ECO =

Economy & Ecology in Harmony ~ 30 – 50% reduced Installation and O&M Costs

Minimum operator exposure to process liquids and vapors

Design synergistic with increased digester gas production

Minimal use of non-renewable resources (polymer)

WASTEWATER THICKENING CENTRIFUGESCENTRISYS ECO-HP 23HP =

“High Performance”@ 50 – 100 % increased throughput versus other centrifuges

Easy to operate

Better process control amenable to automation

“Hydro Pneumatics” for precision control of discharge s streams

“Horse Power” reduced to 0.1 – 0.2 HP/GPM range


WASTEWATER THICKENING CENTRIFUGESCENTRISYS ECO-HP 23

23 =

A design technology leading the way into the 23rd century


WHY?ECO = ECO-FRIENDLY & ECONOMICAL

HP = HIGH PERFORMANCE23 = DESIGN TECHNOLOGY FOR THE

23RD CENTURY


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