2015 presentation
TRANSCRIPT
PotashCorp.com
Isaac HardisonSeniorEnvironmental EngineeringNorth Carolina State University
Environmental AffairsInternship
Favorite Sport : Tennis
Favorite Food : Free Food
Ultimate non-professional dream: Dunk on a 10 foot basketball goal
More info about me
• DFP Area Process Flow Diagram (PFD) Design
• Process Flow Diagram Updates
• Stack testing filing
• Emission Point Drawing Updates
• Reorganizing Environmental Files in Environmental Affairs
• Stack Dimensions Conformation Project
• DFP pH Testing
• Phosphate Analyzer Evaluation
• Total Suspended Solids Analyzer Evaluation
And other tasks
Projects Overview
• Pamela Jestness (Air Quality Engineer) uses PFDs in Air Permit
• Helps understand process
• Shows location of Emission Points in process
DFP Area Process Flow Diagram Design
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DFP PFD With Emission Points
• pH is a permit parameter
• Must be maintained between 6-9
• Believed that higher concentrations of DFP will cause higher pH in water
• Any kind of acid in the water will lower pH
Defluorinated Feed Phosphate (DFP) pH Testing
• Calibrate pH monitor
• Take 500 mL of Tap Water, take initial pH
• Add DFP in 100mg increments
• Mix for 30 sec
• Record pH
• Repeat until 500 mg of DFP is in the water
Experimental setup
Defluorinated Feed Phosphate (DFP) pH Testing
06/19/15
pH
DFP (mg) / 500ml Test 1 Test 2
500ml H2O 07.14 7.20
+ 100mg DFP 1007.16 7.23
+100mg DFP 2007.19 7.25
+100mg DFP 3007.20 7.26
+100mg DFP 4007.22 7.30
+100mg DFP 5007.24 7.34
Results
Defluorinated Feed Phosphate (DFP) pH Testing
0 100 200 300 400 500 6007.10
7.15
7.20
7.25
7.30
7.35
7.40
Effect of DFP on Outfall Water
Total DFP (mg)
pH
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• If DFP dissolves in trench water or the oil-water separator tank the resulting water will have a higher pH
• Lime being dissolved raises pH
• Confirmed other tests results
Results
Defluorinated Feed Phosphate (DFP) pH Testing
• Evaluated a phosphate monitor that could be placed into various streamlines to indicate phosphorous levels
• Permit testing is done from daily composite samples
• Permit limits are 1.5 mg/L daily average and 5 mg/L daily max Total Phosphorus
• mg/L or part per million (ppm)
Phosphate Analyzer Evaluation
• Phosphax and Scantrax
• Phosphax does the test, Scantrax programs and shows results
• Advertised accuracy between .05 ppm – 15 ppm
• Can be programmed to read P2O5, PO4 and PO4-P (elemental P)
• This experiment we were reading PO4 from Phosphax
About the equipment
Phosphate Analyzer Evaluation
• Solutions were made to test the advertised range
• Diluted 50 ppm potassium phosphate (KH2PO4) with DI water
• Outfalls 005, 007 and 009 comparisons with equipment in EA Lab
• Lachat monitor is EA lab equipment
• Recoveries of equipment were tested
What was being tested
Phosphate Analyzer Evaluation
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Experimental setup
Phosphate Analyzer Evaluation
Results
Phosphate Analyzer Evaluation
1 2 3 4 5 60.00
0.10
0.20
0.30
0.40
0.50
0.60Phosphax
Lachat
PO4
(mg/
L)
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.00
2
4
6
8
10
12
14
f(x) = 0.994975711311589 xR² = 0.999915871496931
PO4 (mg/L)
Read
ing
(mg/
L)
Phosphax Recoveries Lachat Recoveries
Outfall 005 .25 - .15 -
Spike #1(1 ppm)
1.14 90.8% 1.03 89.8%
Spike #2(3 ppm)
2.92 92.9% 2.87 94.6%
Spike #3(5 ppm)
4.44 85.9% 4.55 90.3%
Recovery Testing (Verification of Laboratory analysis)
Excellent: 95-105%Good: 90-110%
Acceptable: 80-120%
Results
Phosphate Analyzer Evaluation
• TSS is a water quality measurement of any and all solids in water
• Permit Limit is 30 ppm monthly average and 60 ppm daily maximum
• Testing is currently done through Composite samples
• Looking for “early warnings” for Daily max prevention
• Solitax takes readings every 5 minutes and logs the information
• Took composite samples and logged data to compare with monitor and daily water reports
At 009 outfall
Total Suspended Solids (TSS) Analyzer Evaluation
Data collection at 009 outfall.
Total Suspended Solids (TSS) Analyzer Evaluation
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Lab Setup
Total Suspended Solids (TSS) Analyzer Evaluation
Results Monitor Reading vs. Grab Samples
Total Suspended Solids (TSS) Analyzer Evaluation
6/23/2015 6/25/2015 6/27/2015 6/29/2015 7/1/2015 7/3/2015 7/5/2015 7/7/2015 7/9/20150
2
4
6
8
10
12
14
16
18
20
6/24- 7/7
Solitax ReadingLab Test Results
Date
TSS
(mg/
L)
Typical daily readings
Total Suspended Solids (TSS) Analyzer Evaluation
0
2
4
6
8
10
12
14
166/21/15
Time
TSS
(mg/
L)
Midnight 6/21
Potential Algae Growth
Midnight 6/22
Comparison Between Solitax and EA lab Testing results
Total Suspended Solids (TSS) Analyzer Evaluation
6/15/2015 6/20/2015 6/25/2015 6/30/2015 7/5/2015 7/10/2015 7/15/20150.00
5.00
10.00
15.00
20.00
25.00
EA Lab and Solitax difference
SolitaxEA Lab
Date
TSS
(mg/
L)
• Lab techniques and procedures
• How to form experiments
• How analyzers work
• Water quality
• Stack testing details
• Working with Industrial Salesman
• Evaluations on equipment
What I learned/ new experiences
• EA Department
• IT Department
• Tech Services
• Area Supervisors
• HR Department
• Administration
Special Thanks!
Shouldn’t the guy who came up with Knock Knock jokes win a “no-bell” Prize?If you spill a cleaning product, did you make a mess?
Questions?
There’s more online:
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Twitter.com/PotashCorpFollow us on Twitter
Thank you