Wastewater Treatment Works and Collections System Annual Report Year 2005 General Information

Transcription

1 Wastewater Treatment Works and Collections System Annual Report Year 2005 General Information Facility / System: Town of Farmville Wastewater Collection System and Treatment Facilities Responsible Entity: Town of Farmville, PO Box 86 / 200 N Main Street, Farmville, NC Person in Charge / Contact: Mr. Richard N. Hicks, Town Manager, (252) and/or Mr. J. Donald Riddle, Utilities Director, (252) Waste Treatment Plant Town of Farmville Wastewater Treatment Plant NPDES # NC Designed Flow Capacity = 3.5MGD (Activated Sludge with extended Aeration) Placed in Service in 1979 The facility is manned 24 hours under contract by Hyro-Management Corporation with 6 employees. Wastewater Collection System The Town of Farmville provides a wastewater collection and treatment services for its service area including the wastewater treatment from the Town of Walstonburg, the Town of Fountain, and a portion of Greene County. The system consists of approximately 195,440 LF of 8, 10, 12, 15, 18, 24 and 30 diameter of gravity sewer collection pipe and 30,000 LF of 2, 4, 6 and 12 force main pipe. The collection system primarily functions by gravity with 10 wastewater lift stations directing the flow to the 3.5 million gallons per day designed capacity wastewater treatment plant. The sewer mains are connected in series with 999 sewer manholes. The Town of Farmville Staff consists of 12 employees directly or indirectly responsible for the wastewater system duties. Performance During the calendar year of 2005, the wastewater collection system had no sewage spills. The Wastewater Treatment Facility incidents are included in a separate attachment. The Town of Farmville s staff has developed an extensive maintenance and response plan. The Capital Improvement Plans are currently under continuous review to meet the increasing demand. Town of Farmville Wastewater Treatment Facility Attachment submitted by Hydro Management Services Wastewater Collection System Sanitary Sewer Overflows None to report Summary There is no evidence of or known adverse environmental impacts such as fish kills, endangerment to plants and wildlife or to human health as to the result of the Town Of Farmville operating procedures. This report provides additional data concerning the performance of the wastewater plant and collection system. Recommendations are being reviewed for basin 5 and we are prioritizing for town forces and/or contract. Application for grants is under review for funds to complete an I/I engineering recommendations for basin 6. An engineering study and plans are complete for the 800 KW Sludge Drying Unit for the Wastewater Treatment Plant. Contracts are being processed for excution.

2 Definitions Inflow Infiltration Flow NPDES Water entering the collection system via open inlets into the piping system Water entering the collection system via broken pipe connection or cracks throughout the piping system. The amount of wastewater permitted for processing National Pollutant Discharge Elimination System A wastewater treatment reportable violation is any discharge that violates limits set by NPDES permit. A Collection System Reportable Incident is any spill, regardless of volume, that reaches surface waters and/or any spill greater than 1,000 gallons on the ground. Notification of Annual Report A notice for the Town of Farmville customers will be March 2006 monthly Utilities Newsletter stating this report is available upon request. A similar notice is in February 22, 2006 edition of The Farmville Enterprise. A public notice is on the Town of Farmville bulletin board. The NPDES permit is also available for review. What Can the Customer Do to Help? The Town of Farmville is committed to protecting the quality of the Little Contentnea Creek basin, Lower Neuse River basin, and the environment. Periodically suggestions are placed in the Town s Monthly Utility letter and updates to continued high standard of quality, customer service, and protection of the environment. The Wastewater system is designed to handle 3 things used water, human body waste, and toilet paper. It s very important to keep all foreign materials, such as grease and other household debris from entering the system, as these can cause blockages. Most sewer backups occur between the house and the Town s sewer main, meaning the property owner is responsible for correcting the problem. These incidents can lead to considerable expense and inconvenience. 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 users or customers of the named system and that those users have been notified of its availability. J. Donald Riddle Utilities Director Town Of Farmville Date

3 TOWN OF FARMVILLE WASTEWATER TREATMENT FACILITY ANNUAL PERFORMANCE REPORT For the Calendar Year 2005 prepared: January 2006

4 2005 Annual Performance Report for the Town of Farmville Wastewater Treatment Facility I. General Information Facility/System Name: Responsible Entity: Person in Charge/Contact: Town of Farmville Wastewater Treatment Plant Town of Farmville Richard Hicks Town Manager PO Box 86 Farmville, NC (252) Description of Collection System or Treatment Process: The Town of Farmville, North Carolina owns and operates a 3.5 MGD design capacity wastewater treatment plant (WWTP) that treats a combination of domestic and industrial wastewaters. Approximately sixty percent of the influent wastewater s are from industrial sources. The wastewater treatment plant is a two stage activated sludge system, consisting of a mechanical and manually cleaned bar rack, influent pumping facilities, followed by a grit removal system, aeration basin with a high speed mechanical aerators, rectangular secondary clarifiers, tertiary filters (presently not in use), and chlorination and dechlorination facilities followed by post aeration. Aerobic digestion is provided to biologically stabilize the excess sludge. The stabilized liquid sludge may be dewatered on sand drying beds, or land applied in liquid or dry form to approved application sites. The Town has recently completed a plant upgrade which includes a new chlorination and dechlorination system, new influent pumps, mechanical bar screen and piping modifications to add flexibility to the existing flow scheme. Figure I presents a schematic layout of the wastewater treatment plant. II. Compliance Performance The North Carolina Department of Environment and Natural Resources (NCDENR) regulates the Town of Farmville effluent discharge under the National Pollutant Discharge Elimination System (NPDES). The NCDENR issued to the Town a NPDES Permit, which includes water quality limits and sampling and monitoring requirements. The NPDES Permit requires the Town to test more than 22 different constituents in the treated water. The monitoring frequency for these constituents are set at various intervals such as continuous, daily, weekly, monthly, and quarterly. During the reporting period, the Town conducted 3,999 tests of the treated water before it was discharged to the creek. The WWTP achieved a compliance level of 99.98% with the NPDES Permit requirements. Following is a summary of the testing for the parameters, which are, assigned Water Quality standards by the NPDES Permit. Please note the summary does not include parameters, which incorporates a monitoring requirement only, nor does it include daily process control testing.

5 Constituent Number of Test Required Number of Test Conducted* Flow Continuous Continuous Biochemical Oxygen Demand (BOD) * Total Suspended Solids (TSS) * Ammonia * Fecal Coliform * Chlorine Total Nitrogen Total Phosphorus Conductivity Cadmium Chromium Mercury Copper Zinc Silver Chlorides Toxicity 4 4 *Testing is not required on holidays or during inclement weather. In addition to the required testing, the Town conducted over 2,496 in-house test to ensure the proper operation of the wastewater treatment plant. Following is a summary of permit violations, which occurred during the year: April 2005 The monthly average limit for Ammonia-Nitrogen was exceeded. A weekly average limit for BOD was exceeded during the week of April 18. May 2005 A weekly average limit for BOD was exceeded during the week of May 9. December 2005 The daily average limit for Mercury was exceeded on December 21. III. Certification I have personally examined and am familiar with the information submitted in this document and attachments. Based upon my inquiry of those individuals immediately responsible for obtaining the information reported herein, I believe

6 that the submitted information is true, accurate and complete. I am aware that there are significant penalties for submitting false information. Signed this day of, Richard Hicks (Name) Town Manager (Signature)