WATER ENERGY

1
WATER ENERGY
Presented by MBO, Inc.
2
Your Speaker for Today
Jorge Torres Coto, P.E. Building Systems
Commissioning Engineer MBO, Inc. jorge_at_mbo1.com
Brought to you by MBO, Inc.
3
AGENDA

1. Link between water energy
2. Water Resource Management
3. Wastewater Efficiency
4. Tools, Resources Technologies
5. Benchmarking Water Resources

4
WATER SUPPLY LIFE CYCLE
5
WATER POWER GENERATION

• Power generation requires 140 billion gallons of
  water per day
• 40 of all freshwater in the nation
• Power water Agriculture water
• Though only a small portion is used (3.3 billion
  gallons per day)?
• Power water thermal pollution
• 30 increase in power demand by 2025 (mostly in
  southwest)?

6
REALITY CHANGING OUR MINDSET

• We need to change our mindset
• The earth can survive without man, but man cannot
  survive without the earth
• We do not own the earth and its resources, but we
  do own the responsibility to manage these
  resource so we do not threaten the earths
  survival and mankind's

7
(No Transcript)
8
GREEN IS NOT A COLOR
Global Responsible Environmental Educational Natur
al
9
LINK BETWEEN WATER ENERGY

• Energy consumption in most water systems
  worldwide could be reduced by at least 25
• 7 of the total worlds energy consumption is
  used to provide water services
• Less than 1 of the worlds fresh water supply is
  readily accessible
• In the US 3 of the total energy consumption is
  used in the water and wastewater sector
• CARBON WATER FOOTPRINT !

BLUE SURFACE OR GROUND GREEN RAIN
IN SOIL GREY POLLUTED
http//www.waterfootprint.org/?pagecal/waterfootp
rintcalculator_indv
10
LINK BETWEEN WATER ENERGY

• The problem is not going away!
• 40 population increase in 40 years
• EFFICIENCY
• Supply-side
• Demand-side
• Comprehensive
• Ensuring supply side water efficiency helps
  municipalities maintain water supplies to a
  growing population
• Water authorities benefit from
• Lower costs
• Ensuring energy
• Ensuring water security
• Reducing environmental impacts

11
WATER RESOURCE MANAGEMENT

• Supply side issues
• Leaks
• Low c-value for pipes
• Improper system layout
• System over design
• Incorrect equipment selections
• Outdated equipment
• Poor maintenance
• Waste of usable water

• Supply side solutions
• Impeller trims
• Leak loss reductions
• Equipment upgrades
• Low friction piping
• High efficiency pumps
• Adjustable speed drives
• Capacitors
• Transformers
• Maintenance operation
• Water reclamation reuse

12
WATER RESOURCE MANAGEMENT

• Reducing the amount of water consumed and
  maintaining the end user's level of benefit can
  reduce the consumer's and the utility cost's
• Reducing demand creates more capacity
• The customer attains no additional value in using
  water inefficiently
• Demand side programs can have an impact in one
  year, supply side programs can take years to
  implement
• Saving water through efficiency costs 1/3 less
  than developing new capacity

13
WASTE WATER EFFICIENCY

• The treatment itself of water at accounts for
  25 to 50 of the total energy used by the WWT
  plant
• Primary treatment is not energy intensive
• Screening is good
• Groundwater and rainwater control to limit flow
  and load
• Secondary treatment is very energy intensive
• Activated sludge is more energy intensive than
  attached growth type (medium sized plants)?
• Agitation methods are important decisions. Fine
  bubble diffusers can be 25 more efficient than
  course bubble

14
WASTE WATER EFFICIENCY

• Improvement opportunities
• Aeration control systems for optimization
• Feasibility for oxidation ditch
• Optimize water flow per operating hours
• Reduce water in secondary sludge
• Anaerobic and facultative pond systems do not use
  energy vs. 3-6 kW/m3 for aerated ponds
• Analyze disinfection options
• Chlorination
• Ozonation
• UV treatment

15
WASTE WATER EFFICIENCY

• Anaerobic digestion methane production
• Methane heat electricity
• Larger flows vertical drops hydro power
• Water reclamation
• Water reuse
• Water reclamation does not change the water used
  by the customer, it does save energy and
  treatment costs
• THE BIGGEST HURDLE . . . SUBSIDIES
• AN UNDERVALUED COMMODITY WILL BE A WASTED
  COMMODITY

16
SANITARY DOMESTIC USE

• High Efficiency Toilets (HET)?
• 1.6 gpf vs 0.8 gpf
• Reduce potable water use
• Reduce treatment of water
• Low flow shower heads
• 2.5 gpm vs 1.5 gpm
• Reduce potable water use
• Reduce DHW energy
• Efficient faucet aerator
• 2.5 gpm vs 0.5 gpm
• Reduce potable water use
• Reduce DHW energy

17
SANITARY DOMESTIC USE

• Efficient Clothes Washers
• Front vs top loading
• 40 less water
• Reduce treatment of water
• Xeriscaping
• Drip irrigation
• Rainwater harvesting
• Condensate coil recovery
• Cooling tower blow down adjustment and/or
  recovery
• On-site water treatment plant

18
SAMPLE WATER ENERGY SAVINGS
19
COMFORT COOLING HEATING

• Evaporation 1 flow
• 3.0 gpm / 100 T.R.
• WBT Fan RPM
• WBT water consumption
• Evaporation blowdown
• WATER BALANCE
• M E B D
• CONCENTRATION RATIO
• CR MQUALITY / BQUALITY
• WATER SAVED
• V M x CRi - CRf
• (Crf)(CRF-1)?
• FEEDWATER WILL DICTATE CR

20
NOVEL IDEAS

• OPTION
• Operational Improvements to control blowdown and
  chemicals
• Sulfuric Acid
• Ozonation
• Magnets
• Facility water reuse

• ADVANTAGES
• Low capital operating cost
• Low maintenance
• Low capital operating cost
• High CR
• Higher CR
• Reduced chemicals
• Reduced scale
• Reduced chemicals
• Reduced water use

• DISADVANTAGES
• None
• Safety Health
• Corrosion
• High capital cost
• Complexity
• Health
• Controversial claims
• Increased fouling
• Lower CR

21
COMFORT COOLING HEATING
22
COMFORT COOLING HEATING

• STEAM HEATING ( PROCESS)?
• Inspect Repair Steam Traps
• 15 to 30 fail in first five years
• Water losses and Energy losses
• MINIMIZE BOILER BLOWDOWN
• Typical 100k /hr _at_ 150 psig
• Reduce blowdown from 8 to 6
• Annual Fuel Saved 23,007
• Annual Water Chemicals 9,714

23
COMFORT COOLING HEATING

• CONDENSATE COIL RECOVERY?
• 0.1 TO 0.3 GPH for every ton
• In essence it is distilled water

24
SAMPLE BUILDING WATER SYSTEM
25
BENCHMARKING

1. Understand the process document it
2. Find the best in class, worst average
3. What makes it good or bad
4. Compare all to one another
5. Rubber meets the road

BENCHMARKING PROCESS
26
BENCHMARKING
27
BENCHMARKING
28
AUDITING TOOLS
29
AUDITING TOOLS
30
AUDITING TOOLS
31
AUDITING TOOLS
32
AUDITING TOOLS

1. METERING IS YOUR BEST FRIEND
2. YOU CANNOT FIX WHAT YOU CANNOT SEE
3. PERMANENT METERS CAN BECOME OM TOOLS
4. AFTER AUDIT CONTINUE WITH MONITORING
   VERIFICATION OF SUSTAINED MEASURES

33
MY WATER FOOTPRINT
http//www.waterfootprint.org/?pagecal/waterfootp
rintcalculator_indv
34
TOOLS
http//www.watergy.org
35
TOOLS
http//www.usgbc.org/DisplayPage.aspx?CMSPageID14
47
36
TOOLS
37
TOOLS
38
TOOLS
BASELINE CASE
DESIGN CASE
39
TOOLS
40
THANK YOU
MBO, Inc. 4619 Viewridge Avenue, Suite C San
Diego, CA 92071 858.751.0933 jorge_at_mbo1.com