GRAND VALLEY REGIONAL BIOSOLIDS AUTHORITY (GVRBA)

Transcription

1 City of Grand Rapids City of Wyoming GRAND VALLEY REGIONAL BIOSOLIDS AUTHORITY (GVRBA) A Solids Processing Partnership MWEA Process Seminar December 8, 2010 Mike Lunn Gary De Kock

2 GVRBA MISSION It is the goal of the Grand Valley Regional Biosolids Authority (GVRBA GVRBA) to manage biosolids processing, handling and final disposal in a manner which meets public acceptance and to produce a product that complies with all state and federal regulatory requirements.

3 GVRBA OUTLINE Background Grand Rapids Wyoming Development Memorandum of Understanding Design Joint Operating Agreement Current Operations

4 BACKGROUND - Grand Rapids Zimpro Stabilization Land Application Vacuum Filters / Landfill Sludge storage tanks at Grand Rapids WWTP date from the late 1920s

5 BACKGROUND - Grand Rapids Evaluations by CTE Envirodyne Engineers) CTE (Consoer Townsend Zimpro Heat Treatment Process Fails CTE Design Inadequate

6 BACKGROUND - Grand Rapids 2001 to Comprehensive Master Plan 2002 to Present - GVRBA CTE Pays City $1,104,347.30

7 BACKGROUND - Wyoming Seasonal Land Application Filter Belt Press using landfill disposal when fields unavailable and landfill open Belt filter presses at Wyoming are over 20 years old and do not have sufficient capacity for all plant solids.

8 BACKGROUND - Locations 3.5 Miles

9 DISCUSSIONS 2002 Grand Rapids On Temporary System Wyoming Belt Press Alternative Focus on Class A Composting Digestion Dryers Photo North Royalton, Ohio

10 EARTH DAY Memorandum of Understanding The Mayors of Grand Rapids and Wyoming celebrated Earth Day by signing the official articles of incorporation of the GVRBA

11 THE DREAM

12 STICKER SHOCK! $112,539,000! Reduced Cost Options Evaluated

13 REDUCED COST OPTION Remove thickener, digestion, fermenter, dryer and sidestream treatment $34,000,000

14 BUSINESS PLAN

15 CONSTRUCTION 2008

16 STARTUP Pros Wyoming & Grand Rapids cultures blending Wyoming & Grand Rapids Biosolids EMS in place Contract dewatering shutdown at Grand Rapids Wyoming s belt presses stay off line LEED certified Dewatering Facility (DWF DWF) is pending

17 STARTUP Issues H2S over 200 ppm in Load out Garage Transfer Pumps Centrate Drains Feed Detention Time - Polymer Mix Ventilation Performance Testing Costs

18 ISSUE H2S SAFETY Install remote load out control station Require personal gas monitors on all building occupants Add H2S monitors Improve exhaust hood over truck Test iron salts

19 H2S LEVELS ppm HIGH MODERATE IDLH = 100 ppm ppm Ceiling = 20 ppm STEL = 15 ppm 0-10 ppm LOW TLV = 10 ppm

20 ISSUE TRANSFER PUMPS Won t start reliable (pumping to 3.5 miles of eight inch line) Soft Start insufficient torque (820 amps) Starter Sufficient Torque (930 amps)

21 COSTS Capital Polymer Landfill Land Application Trucking Labor Utilities Recycle

22 CAPITAL $2,106, (Annual debt service) Allocated based on biosolids production at each facility. In 2010, allocation was: Wyoming 35.9% Grand Rapids 64.1%

23 POLYMER Performance Specification 20 lbs. active / DT Initial Jar Testing 12 lbs. active / dry ton Initial Actual >25 lbs active / dry ton Added detention time Added inline static mixer Current lbs active / dry ton Work continues to match jar test performance

24 LANDFILLS Methane Recovery Autumn Hills Landfill Zeeland Farm Services (heat & electricity) Ottawa Farms Landfill 9 9 MW electricity production

25 LAND APPLICATION 75% of Wyoming s solids Lime stabilized, Class B biosolids (use lime waste from local acetylene producer) Contract subsurface injection

26 TRUCKING Load Out Facility H2S Issues

27 LABOR July August September Labor, Operations 10, , , Labor, Maintenance 5, , ,534.38

28 UTILITIES July August September Electricity 31, , , Potable Water Service Water Final Effluent Water 1, , , Natural Gas NA

29 RECYCLE Landfill Program: Landfill Disposal $920,000 Trucking $390,000 GRWWTP-Op/Maint.Costs (Segment 1&4) $706,674 GRWWTP - Polymer $725,000 WCWP - Op Costs (Segments 2 & 3) $71,000 Side Stream Loading (estimated) $1,200,000 Centrifuge Service Agreement $6,800 TOTAL $4,019,474 30% of Dewatering /Landfill cost goes to side stream loading

30 MONTHLY BOARD Information Annual Biosolids Dry Tons FY2010 YTD (33%) % GRWWTP Amount sent to municipal solid waste landfill 14, , % GRWWTP Sub-Total 14, , % WCWP Amount sent to municipal solid waste landfill 2, , % Amount applied to land in bulk form 6, , % WCWP Sub-Total 8, , % Total 22, , % Partner Percentage of Total GRWWTP 64.06% 63.47% 99% WCWP 35.94% 36.53% 102% Annual Debt Service $ 2,106,395 Dry Ton Rate $ $ % Revenue Fund Balance Operations (Sub fund 592) $ 2,053, Construction (Sub fund 593) $ 1,847, Fund Balance as of 11/30/09 $ 3,900, Revenue Requirements $ 6,487, GRWWTP (Monthly = $346,334.68) $ 4,156, $ 4,264, % WCWP (Monthly = $194,307.98) $ 2,331, $ 2,331, % Expenses 728 Supplies Polymer $ 376, $ 705, % Miscellaneous $ 5, $ 16, % 818 Contractual Services Supplies Sub-Total $ 381, $ 721, % Trucking $ 436, $ 220, % Landfill $ 1,045, $ 569, % Land Application $ 1,253, $ 1,405, % Contract Dewatering $ - $ 807, GRWWTP O&M Dewatering/Storage $ 619, $ 608, % Financial Processing (Grand Rapids Comptrollers) $ 5, $ % WCWP O&M Pump Station/Pipeline $ 126, $ 62, % Administration Services (Legal/Audit/Insurance) $ 50, $ 7, % Centrifuge Service Agreement (Siemens) $ 6, $ - 0% 943 Equipment Rental or Lease Contractual Services Sub-Total $ 3,543, $ 3,681, % WCWP Storage Tanks $ 417, $ 417, % 945 Land Rental or Lease Equipment Rental or Lease Sub-Total $ 417, $ 417, % PDR Program $ 40, $ - 0% Debt Service Land Rental or Lease Sub-Total $ 40, $ - 0% GRWWTP $ 1,349, $ 1,349, % WCWP $ 757, $ 757, % Debt Service Sub-Total $ 2,106, $ 2,106, % Expenses Total $ 6,487, $ 6,927, %

31 BUSINESS PLAN BUSINESS PLAN O & M SUMMARY (Dollars) Fiscal Year Storage 241, , , , ,895 Pipeline 63,810 66,469 69,128 71,893 74,768 Pump Station 20,000 20,833 21,667 22,533 23,435 Dewatering 3,189,000 3,324,622 3,460,516 3,602,020 3,749,370 Land Application 1,014,000 1,056,252 1,098,502 1,142,442 1,188,140 Lease 417, , , , ,146 Administration 50,000 52,500 55,125 57,881 60,775 Total Annual Cost 4,995,388 5,189,315 5,383,636 5,585,930 5,796,529 Approved Budget 4,381,317 4,741,620 Estimated Actual* 4,820,943 *Cost due to late startup, paid to dewatering contractor ($807,000).

32 LESSONS H2S is always a concern in wastewater. Always dangerous to rush a project. Collaboration requires effort. Maintain your standards.

33 BOTTOM LINE Would you do it again? The partnership, yes. The implementation would be different.

34 THANK YOU Questions?