Waste Water Pumps, Lift Stations, and Controls. A.S.P.E. overview

Transcription

1 Waste Water Pumps, Lift Stations, and Controls A.S.P.E. overview

2 Applications 4 BASIC TYPES OF WASTE WATER PUMPS Sump Effluent Solids handling - Sewage Grinder

3 Sump Pumps A pump designed to remove water that has accumulated in a sump pit.

4 ELEVATOR Sump Pumps Designed and approved for safe operation of pumping, alarming and monitoring of elevator sump pits, transformer vaults and other applications where oil and water must be detected. ASME17.1 CSA B44

5 S.T.E.P. Sytems Septic Tank Effluent Pump A pump designed for the transfer of Effluent: typically pretreated liquid waste from an onsite sewage treatment systems.

6 Solids Handling / Sewage Pumps Solids-handling sewage pumps pass solids in full-form no chopping, cutting or grinding. SOLIDS GO IN SOLIDS COME OUT! Commercial Residential

7 Grinder Pumps Grinders macerate and cut the solids into a fine slurry allowing the waste to be pumped under high pressure through smaller diameter discharge pipe. Grinders can handle difficult solids, produce high heads and are more common in multi-property developments (such as Lakefronts and housing tracts below sewer grade.) Other common applications include public restrooms and commercial buildings.

8 Grinder Pumps in Action Do Not Try This at Home.

9 Wet well Submersible Pumps Dry well Non Submersible Pumps Lift Stations Pumping stations are built when sewage must be raised from a low point to a point of higher elevation or where the topography prevents downhillgravityflow. Special nonclogging pumps are available to handle raw sewage. They are installed in structures calledlift stations. There are two basic types of lift station: dry well and wet well. Awet-well installation has only one chamber or tank to receive and hold the sewage until it is pumped out. Specially designed submersible pumps and motors can be located at the bottom of the chamber, completely below the water level. Dry-wellinstallations have two separate chambers, one to receive thewastewaterand one to enclose and protect the pumps and controls. All commercial lift stations, whether of the wet-well or dry-well type, should include at least two pumps. One pump can operate while the other is removed for repair.

10 Concrete vs. Fiberglass Concrete Sump Fiberglass Sump (Pre-packaged) Sump formed by masons Pumps, pipes, rails, floats installed later Pre- assembled Fibreglass basin. Equipped with Pumps, and panel. Pipes, rails, floats, valves pre- installed

11 Pre-assembled- Simplex Solids Handling Control Panel and Inlet Hub Single Rail Guide Rails S.S. Pre assembled Piping and valving Junction Box Float Tree S.S. Lift out Chains Pump Included Heavy Quick Disconnects

12 Pre-assembled- Duplex Grinder Station Control Panel and Inlet Hub Single Rail Guide Rails S.S. Pre assembled Piping and valving Junction Box Float Tree S.S. Lift out Chains Grinder Pumps Heavy Quick Disconnects

13 Pre-assembled- Quadplex Grinder Station Advantages: Lower cost, Can Compete with flow rates of higher horsepower Duplex Custom panel fexability Pumps can be metered on individually lots of redundency Smaller pumps easier to service

14 Duplex Grinder Station with Valve compartment Engineered Pump Systems Specifications EPS

15 Guide Rail Quick Disconnect Single Rail Double rail

16 List all fixtures involved in the installation and, using Figure A, assign a Fixture Unit value to each. Determine the total Fixture Units. Fixture Unit Value Pump Sizing Fixture Unit Value Fixture Description Fixture Description Bathtub, 1 1/2" trap 2 Sink, service type 3 Bathtub, 2" trap 3 Sink, scullery 4 Bidet, 1 1/2" trap 3 Sink, surgeons 3 Dental unit or cuspidor 1 Swimming pool (per 1000 gal) 1 Drinking fountain 1 Urinal 4** Dishwasher, domestic 2 Washing machine 2 Kitchen sink 2 Water closet 3** Kitchen sink with disposal 3 Water softener 4 Lavatory, 1 1/2" trap 1 Unlisted fixture, 1 1/4" trap 2 Lavatory, barber/beautician 2 Unlisted fixture, 1 1/2" trap 3 Laundry tray 2 Unlisted fixture, 2" trap 4 Shower 2 Unlisted fixture, 2 1/2" trap 5 Shower, group (per head) 3 Unlisted fixture, 3" trap 6 Bathroom group consisting of lavatory, bathtub or shower, and water closet 6** *Graph data taken from ASPE Handbook, Uniform Plumbing Code, Cameron Hydraulic Data and Plastic Pipe Institute. ** Add 4 fixture units for each flush valve fixture PUMP CAPACITY FIGURE A

17 n Refer to Figure B, locate the total Fixture Unit amount along the horizontal axis of the graph. Follow vertically along until the intersecting plotted line. Follow this intersection point horizontally and read the PUMP CAPACITY in GPM on the vertical axis. 34 Fixture units require a 22 GPM capacity. Using 34 fixture units as an example. FIGURE B

18 Pump Sizing

19 Dia Height Inlet height Float differnetial Input here Inches Tank Sizing R Pi r sq h volume US gallons inches inches inches cubic inches Entire tank Bottom to GPM per p GPM 18" 24" 30" 36" 48" Type of Fixture or Group of Fixtures Based on the 2000 International Plumbing Code Fixture Units Automatic (commercial) clothes washer (2" standpipe) 3 Automatic (residential) clothes washer 2 Bathroom group consisting of water closet, lavatory, bathtub or shower, including or excluding a bidet, an emergency floor drain, or both. (1.6 gpf water closet) 5 Bathroom group consisting of water closet, lavatory, bathtub or shower, including or excluding a bidet, an emergency floor drain, or both. (greater than 1.6 gpf water closet) 6 Bathtub (with or without overhead shower) 2 Bidet 1 Combination sink-and-tray 2 Dental unit or cuspidor fixture_unitsb.doc 1 Dental lavatory 1 Drinking fountain Dishwasher, domestic 2 Floor drains with 2" waste 2 Kitchen sink, domestic, with one 1½" waste 2 Kitchen sink, domestic, with food waste grinder and/or dishwasher 2 Lavatory with 1¼" waste 1 Laundry tray (1 or 2 compartments) 2 Shower stall 2 Sinks 2 Urinal 4 Urinal, 1 gallon per flush or less 2 Wash Sink (circular or multiple) each set of faucets 2 Water closet, flushometer tank, public or private 4 Water closet, private (1.6 gpf) 3 Water closet, private (flushing greater than 1.6 gpf) 4 Water closet, public (1.6 gpf) 4 Water closet, public (flushing greater than 1.6 gpf) 6 Fixture drain or trap size: Drainage Fixture Unit Table 1¼" 1 1½" 2 2" 3 2½" 4 3" 5 4" 6 ½

20 Pump Controls Single Float / Piggy Back Simplex Panel Duplex panel Tri-Plex and Quad-plex

21 Pump Controls Float switch Piggy Back

22 Control Panels Why use a control panel? Convenience of alarm and control in one package Control of larger horsepower pumps (contactor control) Manual operation of the pump Pump monitoring Control of three phase pumps Duplex applications Control of pumps requiring external starting components Intrinsically safe applications Pump disconnects

23 TRADITIONAL PUMP CONTROLS REVIEW ALARM ON OFF

24 CONTROLS - REVIEW ALARM ON OFF

25 WHAT S IN THERE?

26 TRADITION PUMP CONTROLS H.O.A. SWITCHES FLOAT INDICATORS PUMP RUN INDICATORS

27 TRADITION PUMP CONTROLS BREAKERS MOTOR CONTACTORS TERMINALS FOR SEPARATE 115 VOLT CONTROL CIRCUIT FLOAT TERMINALS TERMINALS FOR INCOMING POWER

28 New Transducer Style Control Panels

29 Features: Digital Display Board for monitoring and setup Inner door for end-user safety Cycle counter(s), Elapsed time Meter(s), NEMA 4X enclosure, auxiliary contacts - standard Level-sensing pressure transducer New problem free design Redundant alarm float Can switch between demand dose and time dose. 29

30 How it Works Installer programs on/off/alarm levels with push buttons and digital display Current water level shown on digital display When water is high enough, triggers pumps to turn on Redundant Alarm float works in case of transducer failure Pressure Transducer detects water level

31 IP Panel Operation (cont.) Tank fills to the point of the Start Level. Start light turns on, and lead pump is triggered to turn. Water level

32 Transducer Panel Operation Cycle has just ended, the tank is at the zero point At this water level, only the Stop light is on. Water level 32

33 IP Panel Operation (cont.) The water level continues to rise, However Something is wrong perhaps the lead pump cannot keep up, or the pump is jammed. Lag and Alarm lights turn on, and lag pump is triggered. Water level 33

34 The Display Board Shows reporting information Current water level Elapsed Time Meter(s) Cycle counter(s) Alarm Counter Float Error Counter Used to program pump cycle levels Stop level Lead Pump level Alarm level H-O-A buttons Push HAND to manual run pumps 34

35 Program Settings To switch from reporting (run) mode to programming mode, hold the button for 3 seconds Press the button to cycle through parameters, and button once to choose Use and to set the desired level, and then once again to save the setting. These instructions can be found on the inner front door or in the instruction manual.

36 Surge capacitors Engineered Solutions Lightning arrestors Cycle counters Intrinsically safe EPA / Generator Recepticles CSA/ UL / NEMA.. Indoor / Oudoor Demand / Time Dose Panels Single phase/ 3 phase Auto dialers Transducers / floats Simplex, Duplex, Tripex, Quadpex S.C.A.D.A

37 Motors Shaded pole motors These motors have only one winding, no capacitor, and no starting switch, making them economical and reliable. However because their starting torque is low they are best suited to driving fans or other loads that are easily started. Typically only used in sump pumps PSC motors A capacitor motor in which the starting capacitor and the auxiliary winding remain in the circuit for both starting and running. Capacitor start/capacitor run This type has a start capacitor for the auxiliary winding for high starting torque. It also has a run capacitor that is in series with the auxiliary winding after the start capacitor is switched out of the circuit. This allows high breakdown or overload torque, and it operates at lower temperature than other single-phase motor types of comparable horsepower.

38 3 phase motors IMPORTANT: For 3-phase pumps, check for proper rotation before installing pump into basin.. Rotation To change rotation, reverse any two of the three power leads to the pump. Code the wires for reconnection after installation.

39 Single Phase Three Phase