Micromonitoring Comes of Age By John Barton , Ph.D., P.E. Joseph - PowerPoint PPT Presentation

Micromonitoring Comes of Age By John Barton , Ph.D., P.E. Joseph Kamalesh, M.S. Stantec Consulting Services, Inc.

Overview •Technology •Research and Development •Case Study •Advantages •Limitations Acknowledgements Seattle Public Utilities, Washington Clayton County Water Authority, Georgia City of Florence, Kentucky

Technology What is micromonitoring? A new technique to cost-effectively isolate I/I. 3

What is a micromonitor? Primary Flow 4

Regional Flow Monitoring RAIN I/I FLOW WWTP Regional Monitors (1 per 5 miles of pipe)

Regional Flow Monitoring Equipment: ADS, ISCO, HACH Cost: as much as $2,000 per month per site Range: Must be 2”+ of flow 6 6

Micromonitors - an SSES tool WWTP Distributed Micromonitors Regional Flow Monitor

Research and Development Flume Calibration 8

Seattle Flume Calibration 9

Seattle Flume Calibration Subcritical Supercritical 10

Micromonitor Flow Characteristics AV calculation Weir calculation Supercritical Subcritical 11

Research and Development Seattle 12

Case Study CCWA Basin -071 Spring 2010 Regional Monitor -071 13

Micro Monitoring Schematic -071 MM-02 MM-03 MM-04 MM-05 MM-01 MM-06 Micromonitors upstream of -071 14

-071 CCWA Basin 071 MM-02 MM-03 MM-04 MM-01 MM-05 MM-06 15

Regional Monitor -071 Feb 28 th Storm 29,000 gal 16

MM-01 MM-01 17

Micromonitor 01 Feb 28 th Storm ~ 0 gal 18

MM-02 MM-02 19

Micromonitor 02 Feb 28 th Storm ~ 0 gal 20

MM-03 MM-03 21

Micromonitor 03 Feb 28 th Storm ~ 0 gal 22

MM-04 MM-04 23

Micromonitor 04 Feb 28 th Storm 9,000 gal 24

MM-05 MM-05 25

Micromonitor 05 Feb 28 th Storm 34,000 gal 26

Micro Monitoring Schematic -071 MM-02 MM-03 MM-04 MM-05 MM-01 MM-06 Layout of Micromonitors upstream of -071 27

MM-06 MM-06 28

Micromonitor 06 Feb 28 th Storm 36,000 gal 29

CCWA – Summary INFLOW recorded at the downstream monitor (-071) originated in Sub-basin 6. (18% of the Basin) 82% reduction in SSES!! 30

Micromonitoring Advantages •Significant I/I sources (the cost effective ones) •No CSE (one-man crew) •Quick Calibration •Rapid Deployment •Poor Quality sites •Low flow •Non-Invasive 31

Micromonitoring Limitations •8” pipes only •Lined pipes •Overestimates during surcharge and steep pipes 32

Questions? 33