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HomeMy WebLinkAboutNC0021547_System Performance Annual Report_July 2021-June 2022_20220815TOWN OF FRANKLIN Post Office Box 1479 Franklin, North Carolina 28744 (828)524-2516 System Performance Annual Report Fiscal Year 2022 (July 2021 -June 2022) I) General Information Town of Franklin Wastewater Treatment Plant 399 Sierra Drive Franklin, NC 28734 Wastewater ORC William L. Deal Permit Number NCO021547 II) Description of Facility 828-524-2516 The Town of Franklin Wastewater Treatment Plant (WWTP) is rated for 1.65 million gallons per day (MGD) serving the Town of Franklin and extended service areas. For fiscal year 2022 an average 0.8361 million gallons of flow were treated. The majority of the flow treated is from residential customers. Other flows such as commercial and industrial along with inflow and infiltration (I&I) are also treated. The design of the wastewater treatment plant is a modified activated sludge biological treatment process which relies on an oxidation ditch to provide much of the treatment process. It consists of three rings; an outside, middle, and inside. It's a process that utilizes long solids retention time (SRT) to remove biodegradable organics. The lifeblood of the treatment system are the microorganisms (bugs). These microorganisms treat the wastewater and make the treatment process possible. Here is a detailed layout of the treatment system. Preliminary Treatment HydoDyne Band Screen - screening with compactor and auger. Aerated Grit Chamber - 2 Gorman - Rupp grit pumps and auger grit removal system. 1.5 MGD Equalization Basin - with fine bubble air diffusion. ScreenCo Maxi Screen 400. - Offloading of domestic septic only at septic receiving station. Primary Treatment 3 Ring Oxidation Ditch - utilizes 9 S&N Airflo aerators to maintain correct oxygen content and to maintain adequate mixing. Secondary Treatment 2 - Rex Secondary clarifiers (50 feet in diameter each) 2 - Fairbanks Morse Return Sludge Pumps Disinfection Treatment Sodium Hypochlorite Solution with dechlorination of effluent prior to exiting the treatment facility. Residual Handing Equipment Aerobic Digester 85 feet in diameter, with course bubble diffusion; 1 - Moyno E Z Strip Transfer Pump 1 - Meter Komline Sanderson Belt Press 1 - Fairbanks Morse Waste Sludge Pump Back Up Power Supply Headworks and EQ with (80KW generator) Wastewater Treatment Plant (600KW generator) Bio solids / Sludge Removal The Town of Franklin presses sludge and is disposed into the Macon County Landfill. Automation SCADA provides some automation controls of the treatment facility and emergency notification when operators are not on site. III) Improvements to the Facility and Equipment Facili The Town of Franklin had a compliance inspection conducted by NC DEQ on December 9`" 2020 to verify that the facility was operating in compliance and conditions and limitations specified in the NPDES Permit. There were no issues or findings during the inspection. Equipment Converted 1 S&N aerator from belt drive to a direct drive system. IV) System Performance Measures The Town of Franklin wastewater treatment plant has achieved high performance levels for the 2022 fiscal year. The Town of Franklin continues to provide effective/efficient treatment services to the Town. Average wastewater BOD & TSS removal efficiencies of 98.9% and 99.3% respectively (state permit requires a minimum of 85% removal rates for compliance). See attached charts removal efficiencies. V) Violations The Town of Franklin wastewater treatment plant did not have any violations for 2021 - 2022. VI) Charts Effluent Flow 21 - 22 EFFLUENT FLOW I ; E " F F 1 0 %Ixj - L; N I I - is L 6 1,4 \ \ ) \ j \ 0~ \ \ ] \ ) � \ � � j n J j Biochemical Oxygen Demand w-22BODAVERAGES & PERCENT EFFICIENCY «a » sa ea ea a ` ° « »« Q& »a j !% sa < as ) Q \Ilks» - y { s« % as \98 ! \ _ , . _ sa ) \ ^ sa \ - »a Jul AUG w s: m e w! «! m< a, e, 1 m,sa :.s, . x s mr Total Suspended Solids 35 99.6% 30 Ea 25 ;ta 99.2% 20 15 10 J TSS 21 - 22 AVERAGES & PERCENT EFFICIENCY 99.8% 99.6% 99.6% a� e 99 7�g Z--. 99.0'b x 5 98 7% _ 3 98.896 7 51 98. b.'o 98 IN _. 93.J°1 PJL AUG SEP —r7 Ai nV Dr ;A,V 'c3 MAR APR MA'' ;GPI J i_f _: -;UV_ J7 99.6% 99 5% 99.3% 98.9% 99 3% VII) Summary Effluent Flow The wastewater treatment plant treated a total flow of 305,170,417 gallons for the 21-22 fiscal year. Belt Press Sludge The wastewater treatment plant pressed a total of 1,084 tons or 2,168,000 pounds for the 21-22 year. Domestic Septic Treated The wastewater treatment plant treated a total of 1,213,840 gallons of domestic septic. Sodium Hypochlorite Bleach The wastewater treatment uses Sodium Hypochlorite to disinfect effluent before discharging in to the Little Tennessee River. Calcium Thiosulfate Solution The wastewater treatment plant uses Captor to dechlorinate the final effluent water before entering the Little Tennessee River. VIII) Notification The Town of Franklin will advertise in The Franklin Press, Macon County's largest general circulation newspaper that the System Performance Annual Report will be available for review 1L\Ql.l':5T, ,2 L'I',2 at the Town office or online at www.franklinnc.com IX) Certification I certify under penalty of law that this report is complete and accurate to the best of my knowledge. I further certify that this report has been made available to the user and customers of the Town of Franklin and that those users have been notified of its availability. William Logan Deal, 7/26/2022 Amanda W. Owens Town of Franklin WWTP ORC Town Manager