Upgrade for Historic Plant: Retrofitting UV Disinfection for Small Spaces

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1 UV Water Treatment Atlantium Hydro-Optic Solutions Municipal Water Upgrade for Historic Plant: Retrofitting UV Disinfection for Small Spaces by Phyllis Butler Posy VP Strategic Services & Regulatory Affairs, Atlantium New York s Water Event April 12, 2016 Only Medium Pressure does more for less!

2 Case Study: the Village of Ilion NY The Challenge: match evolving water conditions to changing rules Faces will face - many small systems It is not as simple as it used to be! Solving Small System Challenges Regulatory Changes Site Engineering constraints Technology Funding & Timing match 2

3 122-year-old Water Plant, Ilion NY Village of Ilion Filter Plant, NY, is one of the oldest plants in the country Serves over 9,000 people Processes surface water drawn from creeks and reservoirs Uses slow sand gravity filtration Uses chlorination before and after filtration Established 1893 Rated at 1.5 MGD Serves historic Remington Arms Plant 3

4 Needs to Meet EPA LT2 Needed to adapt to new challenges and meet latest EPA LT2 Enhanced Surface Water Treatment regulations Giardia, crypto and virus credits with no danger of DPBs Expensive Round 1 Monitoring would not guarantee exemption They wanted to use UV to meet the rules BUT. 4

5 Challenge #1: Engineering/Site Constraints 5

6 Site & Project Constraints Very small footprint plant Pipes located in narrow space 30 ft underground already filled with very large pipes Challenge: Avoid increasing DBPs Find a validated UV system with small enough footprint to lower into position between the pipes But big enough to achieve required log reduction and credits And validated for EPA credits And compliant with funding rules! 6

7 While Overcoming Site Constraints Small footprint inline UV system must be validated for crypto, giardia & virus Machine must fit in proposed space between existing pipes Must provide credits at lowest energy use Minimum maintenance, pre-programmed automated reporting Budget & funding sources (AIS, USDA RD, ARRA, etc.) had rules & deadlines No space to fit standard upstream/downstream pipe lengths 7

8 Challenge #2: New Technology 2006: Final LT2 rule designated Adenovirus as the virus target benchmark, requiring doses too high to be validated with surrogates. Validation required for credited use in municipal drinking water Required Piping: Standard 10/5 D The way it was done at validation or prove that the dose delivery is the same as the validation or better UVDGM (460 pages) sets out lots of calculations, safety factors, reporting, alarms, maintenance Identify & report off-spec operation Flow too high? UVT too low? All sensors calibrated? Is it too complicated for regular people? 8

9 Keeping UV technology simple is complicated!! Make it simple: direct full scale validation with adenovirus Could it be done? 2007: Dr. Karl Linden, HDR/Hydroqual and Dr. GwyAm Shin carried out full-scale validation for EPA 4-log virus using live full scale adenovirus challenge, that proved: full 4 log virus performance could be validated & demonstrated full scale UV can perform as well as chlorine for virus disinfection Medium Pressure is much more effective than low pressure, takes much less energy But WHY? HOW? 9

10 Technology Issues: How do you know UV is working? 2008: New York Regulators refused to provide credit without a full understanding of why it worked Must be sure it can be measured, controlled and repeated 2010 a Singapore research group discovered why Medium Pressure UV is so much more effective than low pressure In 2011, New York gave 4 log virus credit to Mohawk NY for UV In 2011 and 2014, additional full scale direct validations adenovirus were successfully completed on different reactors with Dr. Linden and Dr. Chuck Gerba at the UV Disinfection Validation Center in Johnstown, NY. with live Direct Validation with LIVE adenovirus for credit accepted in many states 10

11 Challenge #3: Matching it up Devil in the Details 11

12 Compensating for Dose Delivery At Ilion site, 10xD upstream and 5xD downstream straight pipes used in RZ300 validation not feasible due to site space constraints. UVDGM and regulators required that the unit either provide the pipe lengths or show that the dose delivery is uncompromised Engineer suggested adding a third lamp to compensate for any deficiencies in dose delivery. Would the third lamp provide sufficient increase in dose delivery to compensate for any hydraulic differences? The vendor conducted a series of model simulations in collaboration with the engineer and the validator to evaluate the special configuration of the RZ system in Ilion. 12

13 Testing the Proposed Solution Based on the data from the validation, the vendor and validator matched hydraulic, UVT and flow conditions Simulations used selected validation test conditions closest to the operating conditions to be expected at the Ilion site (flow rate and UVT). RZ system was set up in an inlet/outlet geometry specific to the Ilion site and checked for providing sufficient doses to achieve 4-log and 3-log virus inactivation RZ300 setup at the HDR Technology Validation Center Simulations conducted with various lamp on and off conditions. 13

14 Simulations Give Proof of Performance Compared 3-lamp unit with only two lamps operating Same dose delivery performance as determined by validation for an equivalent 2 lamp unit with pipe lengths The additional lamp and disinfection module act as a hydraulic baffle & duplicate the impact of the upstream straight pipe The flexibility of having 3 lamps provides safety factor and can be used as redundancy. 14

15 The Third Lamp Actually Improves Hydraulics The extra lamp acts as a baffle to compensate for potential hydraulic impairments. Validation and simulation data verified that Ilion would be able to get the required dose and log disinfection performance The validator and the engineering company give the green light to 3 lamp unit configuration proposed by the vendor 15

16 Installation Plan 16

17 Installation in Action: Below Ground 17

18 and at Ground Level Modular components easier when available wall and floor space is limited. Remote monitoring options and automatic reporting helps small systems meet the rules 18

19 Installation in Action: Below Ground Not as simple as it looks! Diver has to isolate the piping in the clearwell to install new isolation valves Bypass to avoid service interruption Custom fabrication to match old pipes Cantilevered rigging to remove the old pipes, put in the new unit Deadlines for funding expiration Work started in May 2015 DOH approval and unit in service August 19

20 Challenge #4: Simplifying Operating & Reporting Climbing down all the ladders is a challenge! Control abilities next to the unit and at Ground Level No need to go there to check up on current data status Controller synchronized with laptop via single Ethernet cable/ plug & play! External on-off synchronizes the unit with upstream processes Password-protected remote control module provides real-time access and control from PC and mobile phone 20

21 Data at a glance Continuous and extremely accurate real-time monitoring of all relevant factors and influences, to determine actual delivered UV dose UV lamp intensity UVT (Water UV transmission) Water flow rate Required validated dose Actual delivered dose 21

22 Transparent Validation Verification 22

23 Regulatory Reports Produced Automatically 23

24 Maintenance Reports make O&M simpler Each critical component is tracked and reported: Lamps UVI (Intensity) Sensor UVT Sensor Ballast Reference UVI (Intensity) Sensor 24

25 Security Tracks and Documents Any Changes Remote access and control including extensive customization settings are secured with a password 25

26 Real Time History Simplifies Troubleshooting 26

27 Working Together for a Solution The Village of Ilion The Engineering Firm Atlantium The Regulators The Validators 27

28 Many thanks to: Tom Bates, P.E., Director of Engineering, John McDonald Engineering Pete Holland, P.E., President, Avanti Process Technologies Bruce Morgan, Municipal Water Village of Ilion Questions? Atlantium Technologies Ltd. Har Tuv Industrial Park POB 11071, Israel