Water and Energy in Maryland: What Next?

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2 Water and Energy in Maryland: What Next? Opportunities, Knowledge Gaps and Research Needs Bob Beringer, PE Vice President, Water /Wastewater Johnson, Mirmiran & Thompson 1

3 BACKGROUND ON ENERGY CONSUMPTION & PRACTICES 2

4 Energy Use by Category Wastewater Collection Systems Pumping Ventilation/Facilities Wastewater Treatment Pumping Aeration Chemical Usage Effluent Conveyance Drinking Water Water Resources Raw Water Conveyance Groundwater Extraction Water Treatment Pumping Facilities Chemical Usage Water Distribution Pumping Facilities 3

5 Source Water Conveyance Going Farther for Lower Quality Water 4

6 Groundwater Extraction Drilling Deeper for Better Quality Water 5

7 Water Treatment Lower Quality of Source Increased Regulatory Requirements 6

8 Water Distribution Peak Energy Costs 7

9 Wastewater Collection Systems Odor Control & Ventilation Pumping 8

10 Wastewater Treatment Chesapeake Bay Initiatives 9

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12 Effluent Conveyance The Solution to Pollution is Dilution 11

13 OPPORTUNITIES IN ENERGY CONSUMPTION & PRACTICES 12

14 GWPC Annual Forum Research to Help Drinking Water Utilities Optimize Energy Use Presented by Linda Reekie September 29, 2010 Water and Energy in Changing Climates Linda Reekie Project Manager Water Research Foundation. ALL RIGHTS RESERVED. 13

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22 Wastewater Treatment Opportunities 15 40% of wastewater treatment costs is energy 21

23 Ensuring a Sustainable Future: An Energy Management Guidebook for Wastewater and Water Utilities JANUARY 2008 USEPA & Global Environment & Technology Institute 22

24 Energy Conservation Measures for Municipal Wastewater Treatment Plants Case Studies of Innovative Technologies and Practices Laura Dufresne, P.E. The Cadmus Group, Inc. Presented at: Ground Water Protection Council Conference: Water and Energy in Changing Climates September 29,

25 Conventional technologies with proven track record: Pumping and Aeration Focus is on innovative and emerging technologies: Study Focus Aeration control and new equipment Advanced treatment processes UV disinfection, Anoxic Zone Mixing Solids processing Laura Dufresne, P.E. 24

26 Wastewater Study Discussion Pumping Aeration DO Meters Coarse vs. Fine Bubbles Disinfection Solids Efficiencies 25

27 Aeration Opportunities DO Meters 26

28 Aeration Opportunities Diffuser Technologies Coarse bubbles (> 5 mm): pre 1970s Fine bubble diffuser technology (2 5 mm): energy savings of 30 to 40 percent Ultra-fine bubbles (0.2 1 mm): the next big thing Laura Dufresne, P.E. 27

29 Not So Simple 28

30 A Compressible Fluid 29

31 Opportunities for waste capture and reuse Biogas from sludge treatment can be captured onsite and used to generate electricity Recovered heat from equipment can also be used at the plant Laura Dufresne, P.E. 30

32 Elkton MD: Example of Energy-Water Nexus Orbal activated sludge system (3.2mgd) 1 of 66 major WWTPs in MD Return activated sludge (RAS) 16,000 population Information retrieved from plant-meets-discharge-standards-while-lowering-energy-costs.html 31

33 Elkton MD: Example of Table 2: Summary of Elkton MD WWTP Secondary And Tertiary Treatment Data: April - November 2009 Effluent Quality Effluent Characteristics Energy-Water Nexus Flow, MGD 1.80 Power 1,930 kwh/mg 0.97 kwh/lb.bod BOD 5, mg/l 4.06 TSS mg/l 3.41 TP, mg/l 0.07* TN, mg/l 1.95 *with chemical addition Information retrieved from plant-meets-discharge-standards-while-lowering-energy-costs.html 32

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35 Neighbors on Curtis Bay 34

36 Application Summary Background Operational Status Negotiations Took 14 Months Air Quality Control System Signed March 2008 Operational Summer 2009 Water Quality has to meet NPDES permit for TSS 4.5 MGD Projected Avg. flow: 4.5 MGD Sharing nutrient credits 35

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38 Charles County Financing and Executing Your Water Reuse Program Charles County s Closed Loop Treated Effluent System May 22, 2008 Presented by Melvin C. (Chuck) Beall, Jr., P.E. Director Charles County Government Department of Planning and Growth Management (301) beallc@charlescounty.org You Can Do It!

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40 RESEARCH NEEDS IN ENERGY CONSUMPTION & PRACTICES Maryland s Future Linda Reekie Project Manager lreekie@waterrf.org 39

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42 Landis Sewerage Authority Dennis W. Palmer Executive Director/Chief Engineer 1776 S. Mill Road, Vineland, New Jersey (609) ex 6255 tel (609) fax 41

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45 Development of a Microbial Fuel Cell For Sustainable Wastewater Treatment Michael W. Ellis & Ishwar K. Puri Virginia Polytechnic Institute and State University Nancy G. Love University of Michigan

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