EarthTec Product Overview

EarthTec Product Overview
Company History
•
•
•
•
Earth Science Laboratories founded in 1991
Home office in Arkansas
Manufacturing in Nebraska
Hundreds of installations across the U.S., some in Latin
America and South Korea
• Markets:
– Agriculture, irrigation
– Pool/Spa
– Lakes/Reservoirs
– Municipal Water
– Wastewater Sludge Lagoons (odor control)
EarthTec Users
EarthTec Chemistry
• EPA Registered as an Algaecide/Bactericide*
• Registered in All 50 States as Algaecide/Bactericide*, in
26+ States as Molluscicide
• Certified to NSF Standard 60
• Reduces Labor Costs with no mixing
• EarthTec Is a simple and highly Efficient Method to
Deliver Copper
• * Non-public Health Bacteria
EarthTec Chemistry
EarthTec is:
 Liquid formulation containing 5% copper by volume
 Made from copper sulfate + ET-3000
 Unique features:
 0.3 pH, yet won’t burn your skin
 Copper is 99.99% cupric ion form (Cu++) so it is readily
bioavailable
 Rapid dispersion, so no need for mixing
 Infinitely soluble in water, stays suspended, will not settle out
 Low concentrations yield high performance: 30-200 ppb copper
EarthTec Uses
EarthTec is a water pretreatment chemical used to:
 Control algae and blue-green algae (cyanobacteria)
 Reduce TOC (Total Organic Carbon)
 Reduce taste and odor compounds, especially geosmin
 No production of DBPs, THMs or HAA5’s (regulatory issues)
 Reduce downstream consumption of:
 activated carbon
 ozone
 coagulants
 Control zebra mussels and quagga mussels: EarthTec QZ
 Reduces many types of bacteria
Reservoir Treatment
•
•
•
•
Copper Remains in Suspension
No Restrictions After Application
Prevent Algae Blooms
Better Water Quality at Plant Influent
(maximize contact time where possible)
• No Disinfection By-Products
• Dosage Rate of Cu (60 ppb up to 1,000 ppb)
Self-Dispersion of EarthTec
% Deviation from Mean Concentration after 24 hrs
Self-Dispersion of CuSO4 vs EarthTec
Copper Sulfate
vs
®
EarthTec
Note:
Both solutions contain equal
amounts of copper.
Copper testing was done with a
DR-3000 spectrophotometer.
Product Comparison
Copper Sulfate vs EarthTec
Algaecide
application rate
application rate
application rate
cost (bulk)
cost per volume treated
Copper sulfate
10.00
3.07
9.41
$1.50
$14.11
lbs/acre
lbs/acre-ft
lbs/MG
per lb
per MG treated
EarthTec
1
1
1
$15
$15
gal/acre
ppm
gal/MG
per gallon
per MG treated
% copper in product
metallic copper added
metallic copper added
25%
0.28 mg/L
2.35 lbs per MG
5%
0.06 mg/L
0.42 lbs per MG
% copper as Cu++ ion
metallic copper, useful
metallic copper, wasted
10%
0.24 lbs per MG
2.12 lbs per MG
99.99%
0.42 lbs per MG
0.00 lbs per MG
Inhibition of E. coli by EarthTec* during a 60-minute challenge study
(Not intended for distribution- lowest detection limit is 2.0 log)
7.0
Control
6.5
Log10 E. coli per mL
6.0
5.5
5.0
4.5
4.0
3.5
1 ppm Cu
3.0
2.5
2.0
0
10
20
30
Contact Time (min.)
Suspension and Dilution Medium: PBS, pH 7.5
Enumeration Culture Medium: TSA
Incubation Temperature: 30 C
40
50
* Copper added by diluting EarthTec
formulation in sterile DI H2O
60
Inhibition of E. coli by EarthTec* during a 22 hr re-challenge study
(Not intended for distribution- lowest detection limit is 2.0 log)
7.00
Log10 E. coli per mL
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0
2
2.08
6
Suspension and Dilution Medium: Cl-free
tap water, pH 7.5
Enumeration Culture Medium: TSA
Incubation Temperature: 30 C
6.08
9
9.08
12
Incubation Time (Hrs)
14
14.08
20
22
* 1.05 mg/L copper added at T = 0 by
diluting EarthTec formulation in
sterile DI H2O
= addition points for ~1 x 105 E. coli cells/mL
Inhibition of E. coli by EarthTec and chlorine during a 22 hr rechallenge study (not intended for distribution- lowest detection
limit is 2.0 log)
1 mg/L Cu (EarthTec)
7.00
Log10 E. coli per mL
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0
2
2.08
6
6.08
9
9.08
12
14
14.08
Incubation Time (Hrs)
20
At the
22 end of 20 Hours,
Cu=0.52 mg/L
2 mg/L Cl
7.00
Log10 E. coli per mL
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0
0.08
2
2.08
6
6.08
9
Incubation Time (Hrs)
9.08
12
14
20
22
At the end of 12 Hours,
Cl=ND
Reservoir Treatment Methodologies
• Treat Entire Reservoir
• Spot-Treat Sections of Reservoir
• Treat Area around the WTP Intake, e.g., a 30-day
supply
Treatment Example
Oklahoma City
• Reservoir size - 2,900 acres
• Applied by Barge, Less Time to Apply
• Treatment Necessary When Anabaena Reach 50
Cells/mL
• Initial Application - 1,760 gal at a Radius of 1,000 ft
around the Intake
• Results - In 48 hrs, Anabaena Count – 0 cells/mL
Treatment Example
North Carolina
 Reservoir 1 - 750 AC, 12-16 MGD
 Reservoir 2 - 1,500 AC, 22-30 MGD
 Application - Treated 275 Surface Acres on each Reservoir
using 1-2 Totes every 2 Weeks
 Treatment Dosage Dependent on Algae Cell Counts
 Algae Counts Reduced
 TOC Reduction Improved from 45% to 55%+
 Manganese Reduced
Taste & Odor Experiences
• Florida
– Geosmin reduced from 900 ppt to 20 ppt
• Tempe, AZ
– Reduced activated carbon consumption by 50%
• Norwalk, OH
– EPA Award for Algae Response
• Tulsa, OK
– 10+ year history reducing Geosmin from
>1,000ppt to <40 ppt
Treatment Example
Tulsa, OK
 Source water: Lake Spavinaw and Eucha
 Geosmin at intake often >1,000 ng/L
 Apply 1 ppm EarthTec at pipeline intake
 Geosmin at pipeline outfall <30 ng/L
Tulsa, Dec 2013
Treatment Example
Tampa
 Source water: Slow-moving river
 Geosmin at time of dose 900 ng/L
 Applied 1 ppm EarthTec at water surface
 Geosmin at 24 h <30 ng/L
Tampa, Feb 2015
Treatment Example
Texas, 50 MGD
QUALITATIVE ASSESSMENT
Before EarthTec:
 Algae Mats Floating in Clarifiers
 Algae on Steel (Needed Skin
Divers to Clean Framework)
 Algae present in Outdoor Filters
(Short Filter Runs)
 Feeding Copper Sulfate Crystals
 Feeding 12 ppm PAC
With EarthTec:
 Clarifiers Clear of Algae
 Algae No Longer Adhered to
Structural Steel
 Outdoor Filters Free of Algae
and more regular filter runs
 Discontinued Copper Sulfate
 Only Feeding PAC when
needed, <3 ppm
Treatment Example
Texas, 50 MGD
Average TOC Removal Without (2011) and With (2012) EarthTec
55.0%
50.0%
45.0%
2011 % Removal
40.0%
2012 % Removal
35.0%
Average TOC
Removal in 2012
is 6.4% lower
than in 2011
30.0%
25.0%
0
2
4
6
8
10
12
14