Design and Application of In-Situ Treatment Technologies
Continuing Education Credits
This is the first offering of this class in CT.
The CT State Board of Examiners of Environmental Professionals (LEP Board) has approved this course for 5.0 hours of continuing education credits (CTLEP-411). The MA LSP Board has approved this course for 5 Technical credits (Course #1567).
Time and Location
This seminar will be held on Tuesday, May 10, 2016 and runs from 8 AM - 1:30 PM at the CTCPA Education Center, 716 Brook St., Ste. 100, Rocky Hill, CT. For directions, see: http://www.ctcpas.org/Content/About/Driving-Directions.aspx
- EPOC Members: $200
- Non-members: $250 (consider joining EPOC at this time to receive the member rate for this program)
- Gov't Employees/Students: $100
Breakfast included.Course Overview
The focus of this course will be on the following topics:
- Insitu Chemical Oxidation (ISCO) - Key parameters involved in selection and design of ISCO applications at contaminated sites - Speaker: Brant Smith, Ph.D., PeroxyChem, LLC
- Insitu Chemical Reduction (ISCR) - Fundamentals and Key aspects related to selection, design and distribution of ISCR technologies at contaminated sites - Speaker: Ravi Srirangam, Ph.D., PeroxyChem, LLC
- Application of Combined Remedies for Insitu Treatment of Organic Contaminants - Speaker - Fayaz Lakhwala, Ph.D., PeroxyChem, LLC
- High Resolution Site Characterization and Injection Design- Advanced Site Characterization Tools used for Design and Application of ISCO/ISCR Technologies - Speaker: Eliot Cooper, Vironex Technical
Each topic will be presented for 75 mins with 10-15 mins for Q&A post the presentation. See below for speaker bios.
Description of the Topics
Insitu Chemical Oxidation (ISCO)
ISCO reagents have successfully been applied at a number of contaminated sites impacted with a variety of contaminants (eg: Petroleum hydrocarbons, Chlorinated solvents, chlorinated benzenes, pesticides etc...). It is critical to identify the key parameters involved in the selection and application of ISCO reagents based on site specific characteristics. This course will focus on:
- Principles of remediation
- Chemistry and Processes of Chemical Oxidation technologies
- Importance of Treatability studies to select the right oxidant and dosing for field application
- Design Considerations and Key parameters for field applications
- Potential Issues
- Switch from ISCO to other technologies
Insitu Chemical oxidation (ISCR)
While biologically mediated reductive dechlorination continues to be a significant focus of chlorinated solvent remediation, there has been an increased interest in abiotic reductive processes for the remediation of chlorinated solvents. A number of factors have been identified as important considerations in remedial design and ISCR technology selection:
- Monitoring of physical, short-term sequestration of targeted compounds as a primary removal mechanism;
- Potential accumulation of dead-end catabolic intermediates as a function of substrate addition; Physical displacement of COIs via substrate addition and water flushing;
- Problems associated with aquifer acidification;
- Mobilization of arsenic or other heavy metals yielding secondary contaminants;
- Applicability to source areas, hot-spot treatment or permeable reactive barriers;
- Ability to immobilize heavy metals present as co-contaminant;
- Performance Monitoring with a particular focus on the application of various ISCR technologies under various site settings, the significance of these factors will be discussed and presented to aid in remedial design of an effective ISCR treatment of CVOCs.
Application of Combined remedies for Insitu treatment of Organic contaminants
Biological and chemical oxidative/reductive processes have been demonstrated to effectively treat a wide range of organic chemicals. Understanding these biotic and abiotic processes and the science and art applying these processes at each site is the key to successful remediation. This presentation will describe the basic biological and abiotic/chemical processes which are applied when treating organic contaminants, with an emphasis on treatment of chlorinated organics. Effective methods for applying and optimizing these processes will be demonstrated. The principal reasons for failures of remediation systems will be discussed and solutions for those failures will be identified. Important hydrogeological and geochemical conditions which affect the in situ treatment process will be described. Case studies of applications in a range of hydrogeological settings will be presented.
High Resolution Site characterization and Injection Design
The effective distribution of reagents needs to take into account reagent persistence and site hydraulics. A critical component is developing a ROI with a sound basis and distribution tooling that takes into account site heterogeneity in target intervals. Generally most sites today have now implemented high resolution site characterization investigations (e.g. MiHPT or UVOST) and the next step is how to integrate these new data sets into effective remedial designs. All sites are different and you will need to understand when to fracture, implementation recirculation systems, or low flow injection. Also with contemporary adoption of solid/slurry based reagents, a better understand of hydraulic fracturing designs will be presented.
Brant A. Smith P.E., Ph.D.
Dr. Brant Smith is the Technical Applications Manager for in situ chemical oxidation (ISCO) technologies at PeroxyChem. Dr. Smith obtained a Bachelor’s of Science with the majors of Civil and Environmental Engineering and Economics from Worcester Polytechnic Institute, and a Master of Science and Ph.D in Civil Engineering from Washington State University. He is a registered Professional Engineer in Washington State.
Dr. Smith has over 15 years of experience design and implementation of numerous field applications and bench scale tests involving ISCO, in situ bioremediation, in situ chemical reduction, and metals stabilization. He has made over 60 presentations at national and international conferences and his research have been published in journals including Environmental Science and Technology, Journal of Contaminant Hydrology, Environmental Toxicology and Chemistry, Journal of Environmental Science and Health, and Journal of Environmental Engineering.
Ravi Srirangam P.E., Ph.D.
Dr. Ravi Srirangam is the Technical Manager for PeroxyChem covering the North eastern United States region. Dr. Srirangam obtained a Bachelor’s of Science in Chemical Engineering and a Master of Science in Chemistry from BITS Pilani, India and Ph.D in Civil (Environmental) Engineering from University of Illinois at Chicago. He is a registered Professional Engineer in the state of New Jersey.
With over 8 years of experience, Dr. Srirangam has designed and implemented numerous field applications and bench scale tests involving ISCO, in situ bioremediation, in situ chemical reduction, and metals/NAPL stabilization. He has made over 25 presentations at national and international conferences and also published his research on bioavailability and biodegradation of PCBs in contaminated sediments.
Fayaz Lakhwala, Ph.D.
Dr. Lakhwala serves as the Technical Manager for North America at PeroxyChem Environmental Solutions. He received his M.S. and Ph.D. in Chemical Engineering with a minor in Environmental Engineering from the New Jersey Institute of Technology.
Since 1991, he has held several positions at environmental consulting firms as well as environmental technology companies in the area of wastewater treatment, and soil, ground water and sediment remediation. During the last 10 years, his focus has been on the design and application of in situ chemical reduction (ISCR), in situ chemical oxidation (ISCO), enhanced reductive dechlorination (ERD), and NAPL / heavy metal stabilization technologies.
Eliot D. Cooper
Mr. Cooper has over 27 years of experience with environmental remediation projects on both public and private sector sites. He received his B.S. and M.S. in Civil Engineering from University of Illinois in 1976.
Mr. Cooper has been developing and implementing high resolution site characterization (MIP/HPT), injection designs, and integration into an optimized and targeted injection strategy. As part of Cascade drilling services, Mr. Cooper is responsible for the delivery and performance of projects involving the high resolution site characterization, injection, and shallow mixing services.