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HomeMy Public PortalAbout070_080_WaterAndSewerPresentationWATER DEPARTMENT QUARTERLY REPORT 1 2 FORT SCREVEN WATER TANK 1. These tanks are elevated in order to ensure good water pressure for all users. Gravity creates the pressure 2. The two tanks on Tybee Island are both 148 feet high. 3 EACH TANK AND ITS RELATED EQUIPMENT ARE SECURED BEHIND LOCKED FENCES AND ARE CHECKED DAILY FOR SIGNS OF TAMPERING. 4 MAIN WATER TANK Each tank holds 150,000 gallons. 5 All wells are secured by a locked gate and are also checked daily for signs of entry. Required tests are performed daily on each well. 6 The Tanks are inspected yearly for corrosion, structural soundness, inside coatings and sedimentation. Any deficiencies are immediately scheduled for correction and repair as soon as possible. 7 The 14th St. well was rehabilitated January, 2013. The rehabilitation included: Pump refurbished with new column pipe New bearings New stuffing box New pump bowl New airline assembly and New suction line. The well was also rehabilitated with chemicals. Production is up by 28% to 30% Total depth of the well is 515 feet. The static water level is 30 feet . 8 WATER USAGE GRAPH, WITH PERMIT LIMITS WATER USAGE GRAPH, WITH PERMIT LIMITS 9 WATER/SEWER QUARTERLY REPORT 1ST QUARTER 2013 WATER The three water wells are doing great. Although there was a problem with the 14th ST. well. The pressure switches quit working and were replaced . These switches are used as a backup to the SCADA system. The costs of repairs was $3000.00 . The Butler Ave. water tank was drained and cleaned, as well as some touch up painting, for its annual inspection, which is done by Tank Pro. The Butler Ave. maintenance contract cost is %11,000.00 yearly. Ft Screven tank is $15,000.00 per year. 10 WATER/SEWER QUARTERLY REPORT 1ST QUARTER 2013 WATER The new drive by Automatic meter reading System for our water meters will start being installed sometime in the middle of June, 2013. The installation will be by Delta Municipal Supply, which is the supplier for the Neptune AMR system. There will be a lot of meter change outs due to us going to one type of meter (Neptune). At this time we have several different types of meters in service. It will be more cost effective to have only one type of meter. 11 WATER/SEWER QUARTERLY REPORT 1ST QUARTER 2013 WATER Total water meters to be changed out: 2,198, Island wide. 1000 existing Neptune meters will be retrofitted with Neptune’s radio head Read. We will have 100% accuracy on all the water meters and the drive by AMR within our system After everything is up and running, the system will be changed to a fixed AMR system, so that all meters can be read from City Hall. The total cost for entire system: $708,054.00 12 WASTEWATER QUARTERLY REPORT 13 Grit King Removes grit, sand, egg shells and all types of detritus, before it can enter into the wastewater system. We are removing several hundred pounds of debris every week. 14 Rotary Screen This device is placed directly after the grit removal system. It removes larger objects such as rags, sticks and any larger objects, before they can enter the treatment process. 15 ODOR CONTROL The odor control system injects live, odor-reducing bacteria directly into the influent stream, which allows the bacteria to mix well before entering the aeration basins, thereby allowing these bacteria to work and eliminate most odors before they can cause a problem. This system is located directly after the Rotary Screen. 16 Basin Aerators This step is next, after the Odor Control System. The influent goes into the aeration basins. There the incoming sewage is aerated and agitated, by means of the floating aerators, which also supply air to the bacteria which perform the actual treatment of the activated sludge. 17 The activated sludge is pumped from the Aeration Basin to the Clarifiers where the solids are settled out and sent to the return lines. The clear water that is separated from the solids are sent to the reuse lines and through the Ultra-Violet disinfection system in the Contact chamber then discharged to the ocean. FINAL CLARIFIERS 18 SLUDGE HOLDING TANKS The sludge that has been settled out in the Clarifiers is sent to the Sludge Holding tanks. In the tanks, the sludge is stored until it can be sent to the rotary fan press. The sludge is constantly aerated for mixing and to prevent odors. 19 ROTARY FAN PRESS This is the final stage of the process. Sludge from the Holding Tanks is pumped to the press, where it is mixed with Polymer, forming a “Sludge Cake” which is then hauled to a landfill. 20 EFFLUENT TOTAL SUSPENDED SOLIDS RESULTS mg/L 21 EFFLUENT FLOW MGD 22 BASIN TOTAL SUSPENDED SOLIDS 23 EFFLUENT BOD5 24 SUMMARY OF THE WASTEWATER TREAMENT PLANTS ACTIVITIES FOR THE PAST QUARTER 1sT QUARTER 2013 GROUNDS MAINTENANCE The trash was picked up daily, and the grass was cut as needed. OPERATIONS AND PROCESS CONTROL The Digesters were filled and decanted from on a daily basis. The pH samples were collected and tested from both the Influent and Effluent on a daily basis. All results were within permitted parameters. The Plant is checked out, at a minimum, on weekends and throughout the day, during the week. Plant operations are being performed efficiently and well. 25 SUMMARY OF THE WASTEWATER TREAMENT PLANTS ACTIVITIES FOR THE PAST QUARTER 1sT QUARTER 2013 (cont.) MAINTENANCE Clarifiers and digesters were hosed off daily. The ultraviolet contact chamber and all buildings were cleaned daily as well. The press is lubed every day that it is run. Required preventive maintenance is being done on all equipment . There are no maintenance Problems to report. 26 SUMMARY OF THE WASTEWATER TREAMENT PLANTS ACTIVITIES FOR THE PAST QUARTER 1sT QUARTER 2013 (cont.) All 14 sewer lift stations have no problems to report. Replaced the stainless steel pump guide rails on lift station #2, located at 2nd Ave. and 17th St. Cost: $4,623.00. Still performing weekly main sewer line cleaning, which helped to prevent a lot of the mains from backing up with grease and other debris. 27 SUMMARY OF THE WASTEWATER TREATMENT PLANTS ACTIVITIES FOR THE PAST QUARTER 1ST QUARTER 2013 LABORATORY 28 CONCLUSION The Plant is running well. All permit-required tests are well below permitted requirements. The new Press and three new Aerators are operating well, as is all other equipment. We have connected the Press to reuse water, thereby reducing our water use by half. Richard Harnage, continues to do an excellent job. Overall, there are very few problems with anything at the plant. SUMMARY OF THE WASTEWATER TREATMENT PLANT ACTIVITIES FOR THE PAST QUARTER 1st QUARTER 2013 29