8.1. SR 03-18-2013 - Laserfiche WebLink

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4.2.1.2. Flow Measurement............... .............17 ........................................................ 4.2.1.3. Grit Removal............................................................................................17 4.2.1.4. Primary Clarifiers......................................................................................18 4.2.1.5. Trickling Filters.........................................................................................18 4.2.1.6. Activated Sludge Process..........................................................................18 4.2.1.7. Final Clarifiers...........................................................................................19 4.2.1.8. Filters........................................................................................................20 4.2.1.9. Disinfection...............................................................................................20 4.2.1.10. Electrical/Controls ..................................................................................20 4.2.2. Design Option No. 2.....................................................................................20 4.2.2.1. Screening..................................................................................................21 4.2.2.2. Flow Measurement....................................................................................21 4.2.2.3. Grit Removal ............................................................................................21 4.2.2.4. Primary Clarifiers......................................................................................21 4.2.2.5. Trickling Filters.........................................................................................22 4.2.2.6. Activated Sludge Process..........................................................................22 4.2.2.7. Final Clarifiers...........................................................................................23 4.2.2.8. Filters........................................................................................................23 4.2.2.9. Disinfection...............................................................................................24 4.2.2.10. Electrical/Controls ..................................................................................24 4.3 Biosolids Treatment Process ....................................................................................24 4.3.1. Pump to Great River Energy (GRE) .............................................................24 4.3.2. Expansion of Existing Anaerobic Digestion System.......................................25 4.3.3. Heat Drying..................................................................................................26 4.3.4. Regionalization.............................................................................................26 SECTION 5.0 COST ESTIMATE 5.1 GENERAL ..............................................................................................................27 5.2 LIQUID STREAM IMPROVEMENTS...................................................................27 5.3 BIOSOLIDS HANDLING IMPROVEMENTS........................................................29 5.3.1. Pump to Great River Energy (GRE) .............................................................29 5.3.2. Heat Drying..................................................................................................29 5.3.3. Regionalization.............................................................................................30 SECTION 6.0 RECOMMENDATIONS AND IMPLEMENTATION 6.1 Recommended Wastewater Treatment Improvements...............................................31 6.2 Project Funding........................................................................................................32 6.2.1. Bonding........................................................................................................32 6.2.2. Assessment...................................................................................................32 6.2.3. State Revolving Fund Loan (PFA)................................................................32 6.2.4. Other Funding Mechanisms...........................................................................33 6.3 Allocation and Impact on User Fees.........................................................................33 6.4 Implementation Schedule .........................................................................................34 City of Elk River,Minnesota T12104758 Page ii Wastewater Treatment Facility Plan Prepared by Bolton&Menk,Inc.