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| SYSTEM ABSTRACT : |
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| PERFORMANCE SPECIFICATIONS : |
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| PHYSICAL SPECIFICATIONS : |
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| Dimensions: |
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10.3’ Long X 5’ Wide X 6.6’ High (overall) |
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Weight Dry: |
1000 lbs. (shipping) |
| Electrical Requirements: |
230/460 VAC, 60Hz, 3 phase, 30 Amps |
| Air Requirements: |
1.5 SCFM at 80 PSIG |
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| Influent Characteristics: |
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Flow Rate: 30 gpm continuous flow w/ surges to 50 gpm for brief periods in continuous flow mode, 200 gallons/15 minutes, or up to 800 gph in batch mode.
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pH Range: 1 to 13 pH Units.
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Temperature: 50 to 140°F
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| Effluent Characteristics: |
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pH Range: 6 to 9 pH Units (adjustable).
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| Monitors & Controls: |
General: NEMA 4X, UL Rated, PLC Control w/ Operator Interface Terminal, BMS Ethernet Interface, Analog Control Loops with PID Control, RAM Memory w/ Two Year Battery Back-Up
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| Treatment Tank: |
Digital pH Controllers with Quick Disconnect Electrodes with Retraction Assembly, Continuous Ultrasonic Level Control with High/High Alarm, Dump Valve Interlock. |
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Digital 4-20 mA pH Transmitter, Dual Channel 12” Circular Chart Recorder with pH and Flow Indication, Paddlewheel Flow Transmitter 0-140 gpm. |
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| SEQUENCE OF OPERATION : |
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Equalization Tanks: |
Laboratory waste enters the equalization tanks through an inlet pipe, upon sufficient level in the tanks, one of the recirculation/transfer pumps start with the recirculation/transfer valves in the recirculation position. With the pump running, wastewater is drawn past the pH probe and the pH level is measured and compared to the set points. If the pH of the wastewater is within the set points the recirculation/transfer valves move to the transfer position and solution is pumped to the treatment tank. If the pH of the wastewater is not within the set points, the recirculation/transfer valves move to the recirculation position and water is recirculated back to the equalization tank and reagent is added until the pH level is within the specified set points for a period of two minutes. The system will not pump wastewater to the treatment tank until the level of the treatment tank is low enough. |
Treatment Tank: |
Pretreated waste enters the treatment tank from the equalization pumps. When sufficient level is reached, one of the recirculation/discharge pumps start with the recirculation/discharge valves in the recirculation position. With the pump running, wastewater is drawn past the pH probe and the pH level is measured and compared to the set points. If the pH of the wastewater is within the set points the recirculation/discharge valves move to the discharge position and solution is pumped to the laboratory waste sewer. If the pH of the wastewater is not within the set points, the recirculation/discharge valves stay in the recirculation position and water is recirculated back to the equalization tank and reagent is added until the pH level is within the specified set points for a period of two minutes. |
Pump Logic: |
The recirculation/transfer and recirculation/discharge pumps are programmed as alternating Lead/Lag. This means that the pumps will alternate on the lead pump start. The lag pump will start upon a rising level while the lead pump is running. When the level of the appropriate tank falls below the preset level the pump will stop and wait for the next cycle. |
Electrical / Controls: The main control panel is epoxy coated, NEMA 4X with lockable disconnect switch. It is equipped with fused disconnects and magnetic starter with 3-phase overload protection and under voltage release for pumps and mixers. Controls include pH indicators, PLC and PC interface, HOA switches for pumps and mixers, and audible / visual alarm annunciators. The control panel meets UL 508A standards. |
Mixer: This system is equipped with a heavy duty, fixed mount, low shear gear mixer. It incorporates a chemical duty high efficiency motor with a 1.15 service factor. The impeller and shaft are T316 stainless steel. The impeller has 45 degree pitched turbine style blades with stabilizing fins. The shaft is designed such that the maximum operating speed is not more than 60 percent
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| CONSTRUCTION MATERIALS & SPECIFICATIONS : |
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Skid / Structural: The system is completely assembled on one structural steel base. The frame is fabricated of 4” c-channel and is covered with ¼” deck plate. Mounting structure is 2” box tube. The entire structure is white metal blasted, primed, and coated with a two part epoxy finish. |
Treatment Tank: Tanks are constructed of thermoformed stress relieved ½” polypropylene. Joints are butt and fusion welded. The tank walls are reinforced with 2 ½” x 1 ½” polypropylene girths. All fittings are gusseted inert gas welded connections. The tank incorporates a gasketed bolt on cover reinforced with 3” structural steel. All hardware is T316 stainless steel. The cover is equipped with a 16” x 14” access port and is equipped with a 4” C Channel mixer rail for mixer mounting. All tanks are designed for fluid with a SG of 2.0 and deflection of less than 1% of span.
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Reagent Tanks: Acid and caustic reagent tanks are constructed of high density rotationally molded polyethylene, capable of withstanding specific gravities of 1.9. They are fiberglass wrapped for additional support and set in a polyethylene containment tank and mounted internally to the PHX assembly. Each tank is fitted with a non-contact ultrasonic level transmitter to provide a continuous reading of the reagent level. |
Chemical Metering Pumps: The system is supplied with two proportional control, electronic solenoid driven, diaphragm metering pumps. They are constructed of polypropylene, ceramic and teflon wetted parts. They have a capacity of 0-20 gph with 4-20 mA control of 0-100% of capacity. They are fitted with anti-siphon valves, spring loaded injection valves, check valves, and three-function priming pressure release valves. |
| Piping Tubing: |
| All hard piping on this system is butt fusion schedule 80 polypropylene. Tubing is heavy wall high density polyethylene with dual containment as required. |
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| DOCUMENTATION / SERVICE / START-UP : |
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Operation & Maintenance Manuals: |
This system is supplied with six hard copies of a complete start-up operation and maintenance manual and one electronic copy on cd. The manual has a complete start-up check list, set of operating instructions, recommended spare parts list, routine maintenance list, and calibration procedures. Also included is a complete set of specifications, drawings, P & ID’s, flow schematics, logic diagrams and component manuals.
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| Start-Up Assistance: |
Burt Process provides a video taped operator training session with this system. Training includes complete electrical and mechanical operation of all components, review of routine maintenance procedures, recommended spare parts, and a troubleshooting check list with corrective action procedures. |
| Service Contracts: |
Burt Process provides routine maintenance and calibration services on these systems. Services include pH probe calibration, cleaning and replacement, pump seal inspection and repair, level switch cleaning and inspection, piping inspection and tightening, mixer inspection and lubrication, and general system cleaning. |
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| DOCUMENTATION / SERVICE / START-UP : |
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