Industrial Pretreater Presentation

Technology for Clean Water
Sorbster™ Media for Water Treatment
Wastewater, leachates, ground water and ponds
1
Sorbster™ Media Properties
•
Removal of soluble heavy metals from water by chemisorption
•
Bonding at chemically enriched sites throughout enhanced alumina-based media
•
High adsorbent capacity: Up to 75% by weight
•
Ability to reach ultra low levels (ppb and ppt)
•
Effective across broad pH range: pH 3 to 10
•
Does not support bacterial growth
•
Multi-metal removal in single water pass
•
No ancillary waste stream
•
Low fouling potential
•
Low energy requirement
•
Passes TCLP for non-hazardous disposal option
2
Sorbster™ Adsorbent Media Types
Sorbster (Sorbster
MM, Sorbster Hg,
Sorbster Se)
•Multi-metals removal
•Selenium Optimized
•Mercury Optimized
Sorbster F,
Sorbster Cu
•Fluoride
•Copper
Sorbster Si
•Silica
•Water flow is the only control parameter
•Establish water-to-media contact time
•Reacted chemistry provides adsorption sites for both
soluble cations and anions
•Aluminum, ammonia and iron sites
• rapid bonding of selenite and selenate anions
•Sulfur and oxide sites
•rapid bonding of cationic selenium, mercury, cations
Avoid surface active chemistries that can coat surface sites and sustained levels of free oxidants
3
Sorbster™ Selective Adsorption Capability
Contaminants Removed
Most Typical Water Ions Do Not Interact &
Pass Through Sorbster™ Media
Inlet to Sorbster™
(ppm)
Outlet of Sorbster™
(ppm)
Mercury
Arsenic
Selenite
Copper
Fluoride
Selenate
Chloride up to 20,000
ppm
Chloride up to 20,000
ppm
Cadmium
Thallium
Vanadium
Calcium up to 3500 ppm
Calcium up to 3500 ppm
Tin
Barium
Hexavalent Chromium
Antimony
Cobalt
Magnesium up to 6000
ppm
Magnesium up to 6000
ppm
Sulfate* up to 89,000
ppm
Sulfate* up to 89,000
ppm
Iron and Aluminum up to
10 ppm
Iron and Aluminum up to
10 ppm
Lead
Boron
Nickel
Zinc
Molybdenum
Cyanide
Up to 99% removal
to achieve
Mercury <1.3ppt
Selenium < 1.0 ppb
This table shows client water results, these are not maximum
levels for the media
*Occasional sulfate removal to 30% maximum
4
Opportunities for Sorbster™ Use
Alternate for/
replacement of:
Hydroxide/sulfide/ carbonate/iron
precipitation
Chemical/polymeric precipitation
Pretreat:
Remove bulk of
contaminant before
another process
Ion exchange
R/O
Carbon adsorbents
Polish:
Remove low metals levels
to accomplish discharge
limits behind existing
processes
Membrane Bioreactors
Dilution
5
Sorbster™ Media Application
Contaminated
Water Stream
• Deployed in industry-standard vessels
• Pump and Treat Application
• Temporary application
• Leased/rented equipment
Flow
Through
Sorbster
Media
• Quick contacting time for smaller
equipment footprint & lower capital
cost
• Water flow rate is the only control
parameter
• Breakthrough determined by
monitoring effluent
• Lead-lag vessels for continuous
operation during change out
Clean
Water
6
Flow-Through and Passive Treatment Options
for Deployment of Sorbster™
7
Performance Evaluation Methodology
Column / Bench Testing
• Flow-through column
• Packed bed of
functionalized alumina in
1” x 36” tall column
• Up-flow operation
• Typical Empty Bed Volume
= 450 cm³
Pilots / Commercial Units
• .5gpm-50gpm
• Contact time controlled by
water flow
• Hydraulic Loading of 1-3
gpm/ft2
Analysis Methods
• Analysis Methods:
• Mercury: 245.1 and 1630
• Selenium: 200.8 with CRC
• Arsenic: 200.7
8
Lab Evaluation of Client Waters – “Send Us Your
Water” Testing Service
5 to 10 gallon water samples
shipped to MAR
Packed bed of media in 1” by 36”
height columns
•
Hydraulic loading of 2 gpm/ft²,
up-flow
• Contact time determination
• Minimum of 15 bed volumes
treated
• Pretreatment testing
• SUYW report
9
Field Demonstration Units
•
MAR Field Demonstration Unit
–
•
Objectives:
–
–
•
Flow rates from 1 – 75 GPM
Contaminant removal on varying water
conditions
Optimize contact time
Typical Scope:
–
–
–
–
–
–
Demonstration test plan (treatment
objectives and analytical testing)
Installation & startup supervision
MAR technical team telephone
consultation
Scheduled site visits
Other scope options available
Final Report and Recommendations
10
Selenium Removal
• Important for media to remove multiple species
– Oxyanions – selenite (SeO₃) & selenate (SeO₄)
– Organic selenocyanate (SeCN)
• Water quality is a variable in selenium treatment
– MAR Systems has on-going R&D on selenium species
vs. competing anions, solubility of complexes, media
composition, pretreatments
11
Sorbster™ Capability for Selenium Oxyanion Species
Single Pass Column Test, 10 min Contact time, Tap Water, Speciation Confirmed
30
Selenite Removal
Selenate Removal
25
20
p
p 15
b
10
Initial Selenium
Average Selenium After
Adsorbent Treatment
5
0
12
Mining Clarifier Effluent 90% Selenite Water
Selenium, ppb
95% Removal of Selenium by Sorbster ™ Media
@ 20 Minute Contact Time
90
80
70
60
50
40
30
20
10
0
85
5
Inlet
5
6
6
6
9
14
18
Bed Volumes (BV) Treated
5
6
23
27
13
100% Selenate Mining Waters
Contact Time is A Key Performance Variable
Sorbster™ Selenium (ppb) Removal
for Rock Pile Runoff at Extended
Contact Time of 50 Minutes
Sorbster™ Selenium (ppb)
Reduction with Increased Contact
Time, High TDS Water
600
550
500
400
300
380
260
200
100
51
0
Inlet Se Pass 1 @ Pass 2 @ 2.5 Hour
16 BV
30 BV
Batch
140
120
100
80
60
40
20
0
120
2.5
Inlet Se
2.5 BV Treated
14
Selenium, mg/L (ppm)
Refinery Selenium Removal at the Sour
Stripper – Selenocyanate
5
4
With Oxidation
No Pretreatment
4.4
3
2.7
2.8
2.4
2.2
2
1
0.1
0
Inlet Se
2L Treated
0.09
4L Treated
0.08
6L Treated
8L Treated
• Midwestern Refinery Stripped Sour Water, pH 9.5
– 39% removal with Sorbster media alone, 22 min CT
– Increased Removal by Sorbster following chlorination: 95%
removal, 22.5 min CT
15
Mercury Removal
• Solubility is most important parameter
– Soluble Hg - passes through 0.45µ filter paper
• Mercury can be solubilized by oxidation
– Typical water pretreatment is bleach to free
chlorine residual and a 1 hour hold time prior to
flow through Sorbster
16
Mercury Removal – The Importance of
Soluble Mercury
Sorbster is an Inconsistent Filter of
Insoluble Mercury Particles
Oxidation Pretreatment to Soluble
Mercury Mitigates Filter Effect &
Enables Adsorption Removal
FGD Water Mercury Removal When
All Mercury is Soluble, 22 Min CT
180
160
140
120
100
80
60
40
20
0
173
180
169
175
160
140
126
98
84
60
24
Inlet 2 BV 5 BV 7 BV 10 BV 12 BV 14 BV
Empty Bed Volumes Treated
Mercury, µg/L (ppt)
Mercury, ng/L (ppt)
FGD Water Mercury Removal When
All Mercury is Insoluble, 22 Min CT
120
100
80
60
40
20
6
6
6
0
Oxidized
Inlet
5 BV
9 BV
14 BV
Empty Bed Volumes Treated
17
Midwestern FGD Leachate Water
Sorbster™ Mercury Removal
35 Minute Contact Time, Flow-Through Column
Mercury, ppt
1400
1200
1200
1100
1000
800
600
400
200
54
53
18
23
6.5
0
Sample
Point Hg
MAR Lab
Inlet Hg
Pass 1 @ 6 Pass 1 @ 20
Pass 1
Pass 2 @ 26 Pass 2 @ 30
BV
BV
Composite
BV
BV
18
Mercury Removal to Meet the Great Lakes
Initiative Level of 1.3 ppt
Hg (ppt)
Sorbster™ Media Mercury Removal per Treated
Sample – Municipal Wastewater, 10 Minute Contact
Time
3.5
3
2.5
2
1.5
1
0.5
0
Incoming Hg (ppt)
Treated Hg (ppt)
19
Fluoride Removal
• Anion removal utilizing activated alumina with
enhanced chemistry
• pH 5.5-6 is typical sweet spot for fluoride
removal
• > Contact Time > Removal
20
Sorbster Fluoride Removal from Refinery
Clean Out Tank
80
Fluoride, mg/L (ppm)
70
70
60
Inlet
50
40
Sorbster
Treated
Outlet
30
20
10
0
• 3,000,000 gallons of 70 ppm
fluoride water processed in
35 days @ 60 gpm
• Discharged at < 1 ppm F
• Tank back in service quickly
• Media in rented frac tank
fitted with simple distribution
piping
• 1750 lbs. fluoride removed
0.8
21
High Bicarbonate Water Application – Sorbster
Fluoride Removal as a Function of pH
1,360 mg/L Alkalinity, 540 mg/L Chloride, 40 Minute CT
20
19
18
17
Fluoride, mg/L (ppm)
16
14
12
Inlet
10
8
6
5
Average Sorbster Treated
Outlet
4
2
0
0.06
pH 5.6
pH 8
22
Silica Removal
• Developed for pretreatment of silica, a
competing anion to selenate
– Utilized in California groundwaters prior to
selenium removal by Sorbster Se
• Tested for cooling and other water
applications where water reuse is limited by
silica
23
Silica Removal by Sorbster™ Si Media
@ 40 Min EBCT, 104°F, 146 mg/L Silica
160
146
140
Silica as SiO2, mg/L
120
100
80
60
94.8% Average Silica Removal
40
20
9
4
2
0.6
6
3
6
8
6
5
8
9
12
10
12
9
0
Bed Volumes of Water Treated
24
Simultaneous Removal of Other
Contaminants
• Database of 150 client water column and field
unit tests where removal of additional
contaminants are tracked
• No in-house capability for radioactives testing
but Sorbster is currently undergoing radium
226 evaluation
– Sorbster removes 30-50% of the barium in
wastewaters
25
Vanadium - Eastern USA FGD Wastewater
Not detected in Sorbster Treated Effluent
6
Total Vanadium, µg/L (ppb)
5.4
5.4
5
4
Inlet to Sorbster @ 88°F
3
2.1
Treated Outlet @ 20
Minute Contact Time
1.9
2
1
0.2
0.2
0.2
0.2
0
2
22
88
Bed Volumes Treated
264
26
Zinc – Eastern USA FGD Wastewater
% Removal Increasing after Typical Media Throw of Zinc
Total Zinc, µg/L (ppb)
12
10
10
8
Inlet @ 88°F
7
6
6
5
Treated Outlet @ 20
Minute Contact Time
4
2
0.2
0.2
0
22
88
Bed Volumes Treated
264
27
Antimony – Chemical Plant Wastewater
Variations in Antimony over 4200 gallons Treated, Target of < 4 ppm Sb
4.5
4
Antimony, mg/L (ppm)
4
3.5
3
2.9
2.5
2
1.5
Inlet to Sorbster @ 104°F
2.2
1.8
1.5
1.5
1
1.6
1.7
Treated Outlet @ 100
Minute Contact Time
1.5
0.9
0.6
0.6
49
73
97
120
Bed Volumes Treated
138
0.5
0
0.01
4
0.01
13
28
Summary of Contaminant Removal from
Iron Mining Wastewater
Sorbster Media Simultaneous Reduction of Contaminants
for Process Water, 20 Minute Contact Time, Flow-Through Column
Constituent
Inlet Concentration
After Sorbster Treatment @
18.4 BV Treated
% Removal
Selenium
369 ppb
71.7 ppb
55.5 ppb
4.01 ppm
58.6 ppb
7.9 ppm
66 ppm
476 ppm
13.5 ppb (average)
Not detected
Not detected
0.45 ppm
21.6 ppb
7.9 ppm
34 ppm
360 ppm
96%
>95%
>95%
89%
63%
0%
48%
24%
Arsenic
Vanadium
Fluoride
Molybdenum
TOC
Silica, as Si02
Sulfate
29
Where Can Sorbster™ be Used?
• Applications of Sorbster™
– Flow-through vessels in lead-lag - pump and treat
– Temporary applications
– Soxx
– Sorbster fines for remediation cap & treat
– Wetlands barriers
– Intermittent flows – but keep Sorbster wet
30
Technology for Clean Water
Rich Lalama
VP of Sales
440-591-0501
[email protected]
Missy Hayes
VP of Business Development
&Marketing
440-505-0962 x100
[email protected]
www.marsystemsinc.com
31

Download Report