Intro

1. Intro Water Cluster Technology Seminar WATER REUSE CASE HISTORY Larry Burbach Mazzei Injector Company, LLC June 17, 2010

2. Water needs out pacing supplies worldwide Water Reuse • Water Scarcity - Surface Supplies & Aquifer Storage • Governments – Municipalities – reuse/recycle no longer a choice • New concerns – removal of chemical contaminants, endocrine disrupters (EDC), pesticides, petroleum additives

3. Storm water recovery – high rain seasons, the need was to capture runoff in the water shed and resupply (restore) the aquifer DS1600-LF GDT™ Degas Separators for PHASE II of City of Wichita’s Aquifer Storage and Recovery Project (ASR-II) June 2010

4. Potable standards required – need to remove all regulated organic and inorganic contaminants – farm land runoff tested high in pestesides and herbacides Aquifer Storage and Recovery • Removal of atrazine • Design & Test Corporate ‘Partners’ • Mazzei • Lakos • Rain-for-Rent • Fresno State University – WET Lab

5. City of Wichita used MIC for ozone injection at the Cheney Facility – injectors, flash reactors and degas equipment with great success Aquifer Storage and Recovery (ASR) Project • $400 million project • Ensures stable and reliable water supply through 2050 • Takes excess water flow out of Little Arkansas River, treats it to meet water-quality standards, and pumps it underground into the Equus Beds acuifer for later use • Phase I was completed in 2006 with the capacity to pump up to 10 million galls of water a day into the aquifer. When Phase II is completed in 2012, that number will jump to 40 million gallons a day.

6. AOP selected for the removal of atrazine ASR-II PHASE II: During this phase, the water treatment plant will use membranes to treat the water and advanced oxidation to remove the atrazine and provide disinfection so that all of the water recharged meets the safety standards established by the Kansas Department of Health and Environment. Both of these are proven cutting edge technologies – but the success of phase II of this project would only be achieved if a degassing system could be designed to work at system operating parameters. Mazzei was selected for their proven ability to adapt their products to specific operating conditions.

7. Demonstration project completed in CA – to validate A the AOP process with either membrane/micro or sand filtration Certification Testing Was Performed at the Dublin San Ramon Services District on Micro- and Media Filtered Water Sand Filtration Microfiltration

8. SMALL FOOTPRINT – vs large storage tank - Program Design • Air Products Halia – AOP • Very effective at organic destruction • Large pressure drop across system • Mazzei Degas System • Remove 95% (min) of all undissolved ozone and oxygen gases • Mazzei System must perform at 1.5 psi influent pressure

9. Hypox reactors require interior static mixing and nozzles causing a significant pressure drop across the system Examples of Full-Scale HiPOx Reactors

10. Halia Advanced Oxidation Pilot System

11. Solution – Step 1 • Modify Mazzei standard product (DS1600) – to DS1600LF • Mazzei and Lakos engineers redesigned degas separator for reduced flow at 1.5 psi inlet pressure • Lakos manufacturing division built prototype to be tested

12. Cheney installation required engineering changes to the MIC degas system to accommodate high supply pressures – 175psi Mazzei Ozone Injectors & GDTTM Degas Separators Wichita, Kansas

13. The Mazzei GDT™ Degas Separator is designed to remove entrained gas bubbles from pressurized water streams. Mazzei was asked to create a custom degas separator to meet the performance criteria of the ASR-II Advanced Oxidation Process (AOP). The challenge of designing the custom degas separator was removing gases at extremely low operating pressures.

14. Prepared for oxygen service – full penetration welds required

15. Burns and McDonald, CAS PM and Wichita witness of test validation Contract Requirements • System validation at specified parameters by Engineering Company and City prior to contract award • Delivery date NLT September 2010 • Validation must be witnessed at full flow conditions (3472 GPM)

16. Solution – Step 2 • Prototype delivered to WET Lab on time for validation phase • Rain-for-Rent contracted to complete custom installation of the largest system ever tested at WET – pipes cut to fit on site • WET Lab testing began

17. prototype validation – testing design critical at full flow – inlet and discharge head ‘visual’ measurements as well as air flow into the water stream and out of the degas separator vent valve. Figure V. Degas separator process testing set-up

18. The WET Lab’s capabilities were key to our success – precise monitoring of flow and pressures were required by B&C and CAS PM – all controlled by Joe on a PDA – data logged stored through telemetry

20. Gantry allowed for safely off-loading and positioning the separator which weighed nearly 6000 lbs. DS1600LF Arriving at ICWT

21. DS1600LF Unloaded

23. Largest system ever tested at the WET Lab – height restrictions required the use of the water flume channel to reduce the overall height of the system inside the test facility • Rain-for-Rent installation • WET Facilities – • Joe Oliphant • Height restrictions resolution

27. Sight glass to set and monitor influent pressure – air supply line located on riser - measured and set at .1 : 1 gas to liquid ratio

28. - Success!! • The initial test run of the degas separator was successful. • The final test run witnessed by Burns and McDonnell verified degas separator performance resulting in final approval of Mazzei’s submittal to supply ASR-II with six custom DS1600-LF GDT™ Degas Separators.

29. DS-1600 LF-A Test Data

30. Acknowledgments The successful development of the custom degas separator was due to the teamwork and the design skills of the engineers at Mazzei and Claude-Laval Corporation, our partner in the development GDT™ Degas Separator Separator performance testing was conducted at the Fresno State University Water & Energy Technology (W.E.T.) Laboratory – custom installation performed by Rain-for-Rent.

31. Thank You