Non Contact UV Commissioning, Startup and operation compared to horizontal, inclined or vertical systems

Transcription

1 Non Contact UV Commissioning, Startup and operation compared to horizontal, inclined or vertical systems Presented by Arijit Sarkar, Application Manager, Enaqua Inc.

2 OVERVIEW OF PRESENTATION Components and Footprint Weir constructions, building for electric, building for overhead crane Commissioning/Installation Start up Show different parts of the system (overview) Lamp racks, installation in the channel, overhead crane (non contact: piped version and in channel ) Level control, lamps, ballast, quartz sleeves to be installed, cable conduit Operations & Maintenance Energy usage, Cleaning, level control, lamp change & usage

3 Non-Contact UV System Dry lamps Contact System Submerged lamps 180 Removable Lamp Support Rack Disinfected water or effluent out Thermostatically controlled air cooled UV lamps AFP tubes to carry water Water or effluent in

4 Inclined and vertical (90 and 45 )

5 Important Lay-out parameters (In Channel) UV Structure 2 Flow 6 3 Level Control 4 Crane/ Hoist 5 Lamp Racks 6 PDC 2 7 Control Panel, electrical panels Hydraulic Control Unit, Mechanical cleaning device(s), air compressor, etc.

6 Foot Print- In Section View Contact / Wet vs. Non Contact Dry

7 Footprint- Area Contact / Wet Non contact / Dry 20.8 (6.4 m) 19.8 (4.5 m) 53.5 (16.3 m) 1112 ft 2 (104 m 2 ) 22.5 (6.9 m) 333 ft 2 (31 m 2 )

8 Installation- In Channel System Quick, Simple and Efficient Installation of Enaqua s prefabricated systems: In-Channel open systems: 1. True (continuous) Channels not required 2. UV reactor is shipped pre-assembled, wired, tested, and ready for start-up from factory. 3. Lower and set UV reactor into Channel 4. Seal inlet and outlet orifice plates to concrete wall using gaskets provided 5. Install UV lamps, terminate power connections to UV reactor. 6. Power Up & UV reactor is ready for start-up and commissioning We have been happy and impressed with the level of support and technical backup support provided by Enaqua and its staff as and when we need it, and are happy to know Enaqua is only a phone call away. Plant operations Supervisor 42 MGD WWTP

9 Installation- In Pipe System Quick, Simple and Efficient Installation of Enaqua s prefabricated systems : In-Pipe closed systems: 1. Place the UV reactor on slab, secure reactor to slab. 2. UV reactor is shipped preassembled, wired, tested, and ready for start-up from factory. 3. Connect to process piping using flanges 4. Install UV lamps, terminate power connections to UV reactor. 5. Power Up & UV reactor is ready for start-up and commissioning

10 Energy savings/opex ENAQUA CONVENTIONAL Required lamps are turned on/off Lamp banks are turned on/off or lamps are dimmed LOW FLOW ON or Dimmed OFF or Dimmed Enaqua s Flow & Level Pacing is always the most energy efficient system! - No matter what the flow -

11 Energy savings/opex ENAQUA CONVENTIONAL Required lamps and ballasts are turned on/off Lamp banks are turned on/off or lamps are dimmed HIGH FLOW ON or Dimmed ON or Dimmed Enaqua s Flow & Level Pacing is always the most energy efficient system! - No matter what the flow -

12 Opex- Scaling/Cleaning of Quartz based reactors

13 Opex- Bio Fouling Bio fouling typically occurs in between the UV Modules/Banks in a Channel Is a serious issue from both a maintenance and disinfection performance standpoint The biological growth if not cleaned regularly can affect the disinfection performance through particulate shielding Cleaning is a manual and labor intensive process Each channel needs to be isolated, taken offline, hosed off, scrubbed, then chemically treated

14 Scaling AFP Tubes vs. Quartz Non-Contact Traditional Quartz Water chemistry and temperature High content of iron Iron, Manganese, Hardness, organic content Interfacial temperature LOW HIGH UV intensity Hydrodynamics TURBULENT PLUG FLOW TRADITIONALLY SAME VELOCITY AS CHANNEL The quartz microstructure and topography N/A- AFP TUBE HAS SMOOTH CHEMICALLY INERT SURAFCE HIGH

15 Opex-Wipers, Seals, Corrosion of Lamp Pins, Broken Sleeves, Leaking Seals

16 Comparison Contact UV - Vs. Non contact / Dry Necessities Contact / Wet Non contact / Dry Constant water level in the channel Lamps always on with every kind of water flow Cleaning Mechanism Building for electrical ballast/electronics Specific channel requirements Weir Near constant energy usage Continuously chemical and, or mechanical Required incl. temperature control Hydraulic flow distribution Flow rate related water level Only lamps related to water level are on Teflon brush- Manual cleaning once every 3-12 months. Built in reactor incl. temperature control Built into reactor

17 Summary/Conclusion Comparison Criteria Enaqua s Non-Contact UV* Traditional Quartz Systems Equipment Cost +/- 10% 100% Construction Cost 30 80% 100% Maintenance Hours 10% 100% Energy Consumption 30 60% 100% Chemical Usage 0 100% Ancillary Equipment Requirements Teflon brush Flow Weirs, Baffle Plates, Hoists, and Cleaning Mechanisms *These values vary depending case by case. Comparative values presented are valid for large to medium sized installations when compared to horizontal and vertical systems.

18 Thank you so much for your attention QUESTIONS OR COMMENTS