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##### The Systems Approach to Lift Station Design, Operation ...

Capacity of pump station #2 must be equal to capacity of pump station #1 Pump Station #1 ... Tmin = minimum cycle time for fill-up and draw-down Q = pump flow rate ... Calculate station LCC (total $ for life of station) Initial Cost Energy Cost Maintenance Cost.

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##### Lift Station Pump Cycling Time

· Total cycle time 20 minutes. If the pump had a capacity of 100 gpm the number of starts per hour increases. It would take 10 minutes for the pump station to fill but at a 90gpm effective out flow rate the pump would only pump for a little over a minute (66 secs). Total cycle time 11.1 minutes which is 5.4 starts per hour.

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##### Main principles of pumps selection. Calculation of pumps

It''s necessary to calculate head, flow rate and useful power of centrifugal pump pumping low-viscosity fluid with density of 1,020 kg /m 3 from tank with overpressure 1.2 bar to tank with overpressure 2.5 bar along given pipeline with pipe diameter 20 cm. Total pipeline length (summarily with equivalent length of local resistances) equals to ...

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##### Wastewater Technology Fact Sheet: In-Plant Pump Stations

Pump stations can be constructed on site (custom-designed) or pre-fabricated in a factory. Pump station capacities range from 76 lpm (20 gpm) to more than 378,500 lpm (100,000 gpm). Pre-fabricated pump stations generally have capacity of up to 38,000 lpm (10,000 gpm). Usually, pump stations include at least two constant-speed pumps

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##### Design of Sewage Pumping Stations

"Design of Wastewater and Stormwater Pumping Stations" Water Pollution Control Federation, Manual of Practice No. FD-4, 1981, p. 18, indicates that the wet well shall be sized so that the cycle time for each pump will not be less than five minutes or that the average cycle time will not be more than 30 minutes. The shortest operating cycle

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##### GRINDER PUMP SIZING AND SELECTION WORKSHEET

GRINDER PUMP SIZING AND SELECTION WORKSHEET To begin, fill in the shaded areas on the front side. A calculator and additional sheet of paper may be required. FIGURE B PUMP CAPACITY based on total Fixture Units* STEP #1 Determine the type and quantity of each plumbing fixture. Multiply each by its fixture unit values in figure "A".

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##### OPERATING AND MAINTENANCE COST ESTIMATING GUIDELINE

Both pumps selected have a design life of 15 years. Pump station and rising mains maintenance costs are the same for both options 20 yr life cycle cost period with a 7% discount rate. Sensitivity analysis required at discount rates of 4% and 10%. 6.2.3 System Data Base Year 2013/2014 Pumping Station Structure Capital / Maintenance

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##### Calculating Pump Starts and Cycle Time | Pumps & Systems

· Upon entry of the required data, the calculator computes the pump down volume, the fill time at various inflow rates, minimum run time, run time at various inflow rates and the starts per hour. At an inflow of 250 gpm, the pump shown in the example would start about eight times per hour and remain off just 3.5 minutes between starts.

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##### How To Calculate Pool Pump Run Time

Grab that calculator and just "sub-in" your measurements for these: 40 (GPM) X 60 (minutes per hour) = 2400 gallons per hour. 20,000 (gallons) / 2400 (gallons per hour) = 8.3 hours. In this case, the ideal pool filter pump run time is 8.3 hours per day for one circulation or "turnover" of water.

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##### Design guidline for Small Waste Water Treatment Works

3.5 essential facilities for sewage pump stations 11 3.6 emergency power supply 11 3.7 operability and reliability 11 3.8 warning systems 11 ... life cycle cost 49 5.1 instructions for using life cycle cost/model 49 5.2 life cycle cost model for water, wastewater systems 53 6. references 61 ...

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##### RECOMMENDED DESIGN CRITERIA FOR SEPTIC TANK …

C. Pump 1. Must be an effluent pump capable of delivering at least 15 gallons per minute at the expected total dynamic head at each station. 2. All pump in a single STEP system must be the same model and size. 3. Pumps must be activated by mercury level control switch(es). 4. Pump discharge pipe must be of Schedule 40 PVC, or stronger material, and

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##### Collection Systems Technology Fact Sheet: Sewers, Lift Station

speed pumps. For pump stations with high head-losses, the single-pump flow approach is usually the most suitable. Parallel pumping is not as effective for such stations because two pumps operating together yield only slightly higher flows than one pump. If the peak flow is to be achieved with multiple pumps in

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##### LCC A UMP L uropump Visit Europump online at

Guideexpands upon life cycle costing and provides substantial technical guidance on designing new pumping systems as well as assessing improvements to existing systems. The Guidealso includes a sample chart, examples of manual calculation of LCC, and a software tool to assist in LCC calculation. Life Cycle Cost Analysis

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##### Pump Efficiency

the annual pumping costs. Inefficient and poorly chosen pumping systems can increase annual costs dramatically. There also is a possibility excessive wear will occur on the pumping plant, and water may be wasted. Pump Efficiency Pump efficiency is defined as the ratio of water horsepower output from the pump to the shaft horsepower input for ...

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##### SECTION 4

unfeasible and pumping is required. If a sewage lift station is proposed, it shall be the developer''s responsibility to provide the services of a licensed civil engineer to demonstrate to Western that a sewage lift station is the most economical method, including all life-cycle costs, for sewage conveyance.

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##### Wastewater Pump Station Design Problems and Solutions

· internal surfaces over time. If the pump selection is based on a C factor of 120, ... Problem involves a Force Main High Point near the pump station: Typically the TDH calculations are based on the entire length of force main pipe from the ... When the pumps cycle off or there is a power failure, high surge pressures can damage piping.

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##### Pressure Sewer System Design :: E/One Sewer Systems ...

Find the right grinder pump station for your project in our Product Catalog, or download our Station Sizing Reference Guide. Design a Pressure Sewer System: Design Assistant 9 Software Download E/One''s software for hydraulic analysis of sewer system layouts that will use E/One grinder pumps.

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##### Municipal & Commercial Wastewater… | Zoeller Engineered ...

With decades of experience in the commercial and municipal water industry, Zoeller Engineered Products designs and builds complete customized pump systems for moving wastewater. Family Owned. American Proud. Rail and Disconnect Systems. Z-Rail® Disconnect systems (1-1/4" to 3" vertical discharge) or square guide rail systems (1-1/4", 1-1/2", 2 ...

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##### Hillsborough County

2.2.1 Electrical Drawings - Grinder Pump Station; 2.2.2 Electrical Drawings - In-fill Pump Station; Duplex Pump Station. 3.1 Mechanical Drawings; 3.2 Electrical Drawings 3.2.1 Electrical Drawings - 3 - 20 HP; 3.2.2 Electrical Drawings - 25 HP; 3.2.3 Electrical Drawings - 30 - 75 HP; Triplex Pump Station. 4.1 Mechanical Drawings; 4.2 Electrical ...

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##### Design Recommendations

the shortest cycle time occurs if q = Q/2 which gives the minimum required volume of the sump: V min = Tmin x Q / 4 The minimum cycle time is determined by the number of pump starts with regard to the mechanical stress from the temperature rise in the motor. Assuming 15 starts per hour implies a critical cycle time T of 4 minutes, the

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##### Measuring pumping costs for electric irrigation pumps ...

· Another useful figure that can now be calculated is the pumping cost per ML per metre of head. This allows a meaningful comparison between different pump stations. Pumping cost per ML per metre head: = cost ($/ML) ÷ TH (m) = $50.25/ML ÷ 31.6m = $1.59 / ML / m head. Step 6: Determine motor efficiency (Me) Electric motors have an efficiency value.

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##### Pump Ratio and Performance Charts

RatioPressureVolume If the motor piston has a 2 square inch (12.9 cm2) effective area and the pump piston has a 2 square inch (12.9 cm2) effective area, the motor to pump ratio would be 1:1.Applying 100 psi (7 bar) to the motor would develop 100 psi (7 bar) of …

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##### CIP CLEANING GUIDELINES

• Milk pump capacity: The water introduced during each air injection cycle must be removed by the milk pump or the sanitary trap will flood. The milk pump capacity divided by the water introduced per cycle will yield the minimum total air injection cycle time (open plus closed times). The system should be operated near this level to

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##### Selecting and Sizing Water-Storage Tanks

Figure 5-1 shows the use of constant-rate pumping for 24 hours. However, the part-time use of more or larger pumps may be more cost-effective. To get the best electric power rates, pumping (or power-demand load) must be reduced during the periods when the maximum electrical demand occurs. A simple way to reduce rates is

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##### CHAPTER 10 SEWER PUMP STATIONS AND …

a) Loading calculations indicating pump station service area and build-out flows. b) System hydraulic analysis with system curve for recommended pump. c) Flotation calculation (weight of station without pumps vs. uplift). d) Cycle time calculation shall provide for a maximum five (5) cycles/hour and a minimum run time of 1 minute at zero inflow.

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##### Appendix 10-B Pump Station Hydraulic Design Example

Before discussing pump cycling calculations, operation of a pump station will be described. Initially, the water level in the storage basin will rise at a rate depending ... However, the following limits may be used for estimating allowable cycle time during preliminary design: Motor Hp Cycling Time (t), min. 0 - …

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##### The Mathematics of Pumping Water

pump will need to overcome a system pressure of 10.39 m. At the top level, the pump will only need to overcome a system pressure of 6.79 m. If a centrifugal pump were selected to achieve either the maximum or minimum head condition, this would likely result in either too much or too little

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##### ARTICLE 7: REQUIREMENTS FOR SEWER CONSTRUCTION

10 and 30 minutes. The cycle time of the pumps should not be more than six times per hour; Verify that air relief valves are provided on the high points of the force main; Include information or calculations for future growth (PE and pump curves); Identify Pump Horsepower and Impeller type and which system curve is applicable;

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##### Pump calculations

· Paul Evans. -. Sep 11, 2017. 10. Pump calculations how to calculate pump speed, head pressure, rpm, volume flow rate, impeller diameter. In this article we learn how to perform pump calculations in both imperial and metric units to assess pumping performance following the change of flow rate, pump speed, head pressure and power.

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##### Life cycle costs | KSB

See Fig. 1 Life cycle costs. Fig. 1 Life cycle costs: Cost breakdown throughout service life (example) The energy costs are calculated as follows: The calculation applies to one specific operating point only. Given that pump operation usually involves a broad flow rate range, a pro rata calculation must be performed for the various flow rates ...

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##### Pump Run and Off Times – Cycle Stop Valves, Inc

The pump must start every time a toilet is first flushed. However, the CSV eliminates so many cycles during showers, heat pump or sprinkler zones, and other long term uses of water, that even though the pump cycles every time a toilet is flushed, it is still cycling hundreds of times per day less than a regular pressure tank system with a large ...

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##### Irrigation Water Pumps — Publications

Basic Pump Operating Characteristics "Head" is a term commonly used with pumps. Head refers to the height of a vertical column of water. Pressure and head are interchangeable concepts in irrigation because a column of water 2.31 feet high is equivalent to 1 pound per square inch (PSI) of pressure.

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##### Value stream map and timeline calculations

The cycle time of a process step is the time from one completed output to the next completed output. In Engage, when you enter cycle time values in the Process task pane, they appear in the troughs of the timeline. Typically, you enter Cycle Time or VA CT and NVA CT.If you enter all three values, Engage will display either Cycle Time or the sum of VA CT and NVA CT, whichever value is greater ...

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##### Seattle.gov Home

Motor Cycle Time 2. Calculate Required Wet Well Volume based on Cycle Time: V [ft^3] = t [min] *Q [gpm] where: 3. ft LF 2006-2007 hourly flow data from identical pump station and collection system Pumps Collection System Task: Determine the minimum wet well size for a wastewater pump station, wet pit only configuration, given the following:

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##### Chapter 9 WASTEWATER PUMP STATIONS AND FORCE MAINS

R&O 07-20 WASTEWATER PUMP STATIONS AND FORCE MAINS June 2007 Chapter 9 - Page 6 The detention time shall be calculated as the force main volume divided by the estimated ADWF at the 1-year period after pump station startup. For pump stations discharging into …