Utility Partner Data Report

Transcription

1 Utility Partner Data Report Project Title: Studying Distribution System Hydraulics and Flow Dynamics to Improve Water Utility Operational Decision Making Water Distribution System: Paris, Kentucky Project No.: UK Grant No.: HSHQDC Organization: University of Kentucky Principal Investigator: Field Support Lindell Ormsbee Signature Date L. Sebastian Bryson Signature Date Paris Combined Utility Kevin Crump Water Utility Superintendent Signature Date

2 Paris - Utility Partner Data Report TABLE OF CONTENTS LIST OF TABLES... II LIST OF FIGURES... II 1.0 INTRODUCTION KEY PERSONNEL MAJOR COMPONENTS DISTRIBUTION PIPING WATER TREATMENT PLANT Current Facilities and Operations Pumps Water Treatment Plant Discharges TANKS VALVES AND HYDRANTS WATER QUALITY MONITORING SYSTEM DEMANDS WORKS CITED APPENDIX A: PUMP CURVE DATA APPENDIX B: PARIS 2010 WATER QUALITY REPORT LIST OF TABLES Table 1. Summary of Pipe Materials... 4 Table 2. Pump Information... 6 Table 3. Paris Storage Tank Information... 7 Table 4. Water Quality Report for Chlorine and Fluoride... 8 Table 5. Customer Base for Paris Water Works... 9 Table 6. Wholesale Purchasers of Paris Water... 9 LIST OF FIGURES Figure 1. Location Map of Paris Water Works... 1 Figure 2. Schematic of Paris Water Distribution System... 3 Figure 3. Aerial View of Paris Water Treatment Plant... 5 Figure 4. Paris Average Day Water Production... 6 Figure 5. Paris Maximum Day Water Production... 7 ii

3 Paris - Utility Partner Data Report iii

4 1.0 INTRODUCTION The City of Paris is located in Bourbon County, Kentucky northeast of the City of Lexington. The population served by the water distribution system is approximately Paris total land area is approximately 6.8 square miles. Bourbon county has a land area of square miles. The city of Paris is at an altitude of 843 feet above sea level using the courthouse benchmark. The county ranges from 715 feet to 1050 feet. The city is serviced by Paris Combined Utilities. The Paris Water Treatment Plant (WTP) is supplied by surface water from Stoner Creek. Louisville Frankfort Lexington ^_ Paris Richmond Bowling Green MilesÜ Figure 1. Location Map of Paris Water Works 1

5 2.0 KEY PERSONNEL The water distribution system is provided by Paris Combined Utilities. Paris Combined utilities also provides electric and sewer services. Key Personnel with Paris Combined Utilities include: Ron Vanover City Manager 525 High Street Paris, Kentucky (859) Mr. Jim McCarty Finance Director 525 High Street Paris, Kentucky (859) Mr. Kevin Crump Water/Power Superintendent 700 Scott Avenue Paris Combined Utilities Paris Kentucky (859) Mr. Andy Roe Paris Fire Chief (859)

6 3.0 MAJOR COMPONENTS The Paris water distribution system consists of an intake pumping facility, a water treatment plant, a high service pumping facility, and transmission and distribution systems. The treatment plant serves approximately 4874 retail customers and one wholesale customer. The treated water transmission and distribution system consists of a grid of mains ranging from 2 to 18 inches in diameter and has a total elevated storage of 2.45 million gallons (3 Tanks). The plant as of 2010 has an average use of 1.81 million gallons per day and the plant s total treatment capacity is 3.0 million gallons. 3.1 Distribution Piping The City of Paris water distribution system is comprised of pipe sizes up to 18 inches in diameter. The transmission mains from the water treatment plant consists of an 18 inch line which splits off into two 10-inch lines and a 16-inch line. The two ten inch lines extend into the center of the city. The 16 inch line runs directly to the 10 th street water tank. Figure 2. Schematic of Paris Water Distribution System There are pipes of several different materials installed within the system. Table 1 displays the material, the different size diameters and the total length of each material. The age of the pipe material ranges depending on what section of the city you are in. Ages typically 3

7 range anywhere from 85 years old to less than 5 years old. There are ductile and cast iron pipes that are 85+ years old. PVC pipes generally range from around 35 years old to less than 10 years old. Asbestos cement pipes were all installed in Material Table 1. Summary of Pipe Materials Diameters (in) Total Length of Pipe (ft) Percent of Total Length (%) Age Ranges Asbestos Cement ,4,6,8,10,12, Cast Iron 16, to 2000 Ductile Iron 2, 1.5, 6,8,10,12, to 2009 PVC 1.5, 3,4,6, to 2005 Polyethylene Other 2, N/A 3.2 Water Treatment Plant Current Facilities and Operations Paris water treatment plant draws water from Stoner Creek. Water is pumped into a rapid mixer by raw water (low service) pumps. The water is pumped in at a rate of 2,100 gallons per minute. The flow rate is important in that all detention times throughout the treatment process are based on this flow rate. Once the water has been pumped poly aluminum chloride or alum, lime and sodium permanganate are added and thoroughly mixed with the creek water. Dosages vary depending on the water conditions. Detention time in this basin is one minute. Water then flows into the coagulation basin where it is slowly mixed by two mechanical paddles. As the water flows through, the chemicals reacting with the particulate matter start to form what is known as floc particles. These particles continue to grow in size and mass as they continue through this basin. Carbon is added when needed in this basin for taste and odor control. Also sodium permanganate is reacting during this time to oxidize any metals that may be dissolved in the water as well as oxidizing other organic materials present. The detention time for this basin is forty minutes. Chlorine is added for disinfection at the effluent of this basin. The water then flows into the settling basins where the flow particles settle to the bottom. The water then flows to the filters. The detention time in the settling basins is approximately four hours. There are four filters that are called dual media rapid sand filters. They utilize both sand and anthracite as the filtering medium. The filters are equipped with rate of flow gauges and controllers that maintain a constant and balance flow through each filter. The filters 4

8 retain any particles that may not have been removed in the settling basins. They filter at a rate of two gallons per square foot per minute. Chemicals added in the filter effluent are fluoride, ammonia and chlorine. Caustic soda is added to help control the ph. When the water leaves the filters, it enters the clearwells were it is stored on site. The treatment process is complete other than the contact time with the chlorine or chloramines which are added after the filters. By the time the finished water reaches the high service pumps, the chlorine contact time is complete and the water is then pumped into the distribution system where it reaches the City of Paris customers Pumps Figure 3. Aerial View of Paris Water Treatment Plant Paris Water Works has 5 pumps located at their water treatment plant and 1 booster pump located off of their 19 th Street Water Storage tank. At the treatment plant there are 2 raw water pumps, 2 high service pumps, and 1 wash water pump. Table 2 contains the capacity, horsepower, and total head of each pump. Refer to Appendix A for pump curve information for the 2 high service pumps and the booster pump. 5

9 Table 2. Pump Information Pump Type Pump Use Capacity (GPM) Horse Power Total Head (ft) TURBINE RAW WATER TURBINE RAW WATER TURBINE HIGH SERVICE # TURBINE HIGH SERVICE # CENTRIFUGAL WASH WATER Water Treatment Plant Discharges The average daily demand in 2010 for the Water treatment plant was 1,810,000 gallons. The maximum daily demand in 2010 was 2,870,000 gallons. Figure 4 and Figure 5 illustrate the average daily demand and maximum daily demands between September 2008 and May Figure 4. Paris Average Day Water Production 6

10 3.3 Tanks Figure 5. Paris Maximum Day Water Production The City of Paris utilizes 3 storage tanks, Bypass, 19 th Street and 10 th Street Water Tanks. These three tanks were constructed in 1985, 1950 and 1959 respectively. All tanks are pressure tanks. Telemetry data is recorded via radio. Paris is currently working to upgrade its telemetry system for its tanks. Table 3 shown below displays some general characteristics of each tank. Table 3. Paris Storage Tank Information Elevated Storage Tank Identification, and Elevations Name BYPASS 19th STREET 10th STREET Size (gallons) 1,000, ,000 1,000,000 Elevation of Bottom of the Tank Minimum Level (ft) Max Level (ft) Type Elevated Elevated Standpipe 7

11 3.4 Valves and Hydrants The City of Paris currently has 465 valves installed within its system. The City of Paris currently has 312 hydrants located across its distribution system. The City of Paris typically performs fire flow tests on each hydrant every other year. 3.5 Water Quality Monitoring Water Quality Monitoring Samples are taken daily and tested in a lab to help ensure the standards for water quality are met. Continuous water quality testing is performed at the Paris Water Treatment Plant. Water is tested for turbidity, alkalinity, hardness, iron, manganese, fluoride, ph, corrosiveness, and disinfectant residual. Table 4 summarizes aspects of the 2010 Water Quality Report. For the full water quality report refer to Appendix B. (City of Paris Combined Utilities, 2011) Table 4. Water Quality Report for Chlorine and Fluoride Contaminant MCL (mg/l) MCLG (mg/l) Report Level Range of Detection Fluoride to 1.35 Chlorine to 3.2 In 2010 Paris Water works was in violation of its Chloramines levels, its Haloacetic Acids levels, and its Total Organic Carbon levels. In August 2010 a team of Individuals from the U.S. Environmental Protection Agency (USEPA) Technical Support Center (TSC) and the Kentucky Department of Environmental Protection (KYDEP) conducted various studies to facilitate the development of a chloramine distribution system optimization approach. The studies included a review of selected historical water quality data, distribution system sampling, kinetic studies, storage tank assessment, and evaluation of nitrification potential curves. These studies began in August 2010 and concluded in January (USEPA Technical Support Center, 2010). 8

12 4.0 SYSTEM DEMANDS The design capacity of the Paris Water Treatment plant is 3 million gallons per day (MGD). The average daily production is approximately 1.81 MGD with a high daily production of 2.87 MGD. The total annual volume produced is about 590 million gallons (MG). The estimated water loss is about 33.79% of the total annual volume. (KIA, 2010) According to the Kentucky Infrastructure Authority (KIA, 2012) the customer base for Paris Kentucky is as shown below in Table 5. Table 5. Customer Base for Paris Water Works Wholesale Customers 1 Wholesale Usage (MG) 3.6 Resident Customers 4874 Resident Usage (MG) Total Customers 4875 Total Water Usage (MG) Additional information on the wholesale usage is provided in Table 6. Table 6. Wholesale Purchasers of Paris Water Annual Connection Serviceable Purchaser Name Volume (MG) Meters population Harrison County Water Association

13 5.0 WORKS CITED City of Paris. (2011, January). City of Paris. Retrieved from City of Paris Main Website: City of Paris Combined Utilities. (2011) Water Quality Report. Paris: City of Paris Combined Utilities. Kentucky Administrative Regulations. (2012). Surface water standards. 401 KAR 10:031. Frankfort: Kentucky Administrative Regulations. Kentucky Infrastructure Authority (2012) SUSEPA Technical Support Center. (2010). Chloramine Distribution System Optimization Development Study. Cinncinnati: USEPA Technical Support Center. 10

14 APPENDIX A: PUMP CURVE DATA The figures shown below display the pump curves for the 2 high service pumps used in the Nicholasville Water Treatment Plant. Figure A.1 High Service Pump #1 Figure A.2 High Service Pump #2 11

15 Figure A.3 19 th Street Booster Pump 12

16 APPENDIX B: PARIS 2010 WATER QUALITY REPORT 13