Waterjet Placement of Remediation Amendments into Contaminated Sediments


The ability to deliver remediation amendments into contaminated sediments without negatively impacting benthic organisms and their environments has proven to be challenging. The use of waterjets to perform this delivery of remediation amendments at depth is a viable alternative. Waterjets are a viable alternative for placement of remediation amendments at depth. An amendment injection system and waterjet nozzle has been developed to test the merit of this concept. The injection system's performance was assessed by characterizing the distribution of delivered amendments throughout a surrogate sediment test bed. A novel spectrometry method was developed for powdered activated carbon characterization, while granular iron was characterized using two different methods, visual comparison and Inductive Coupled Plasma analysis. Distribution of the placed amendments illustrated similar patterns for a range of injection times and amendment types. However, the depth of injection was dependent upon the type of amendment being injected. The findings of this study has lead to a better understanding on what occurs during an amendment injection, which will aide in and allow for more controlled placement of remediation amendments in the future.

Meeting Name

World Environmental and Water Resources Congress: Challenges of Change (2010: May 16-20, Providence, RI)


Geosciences and Geological and Petroleum Engineering

Second Department

Civil, Architectural and Environmental Engineering

Third Department

Mining Engineering


Environmental and Water Resources Institute of ASCE

Keywords and Phrases

Great Lakes; Sediment; Water pollution; Water reclamation; Benthic organisms; Contaminated sediment; Granular iron; Inductive coupled plasma; Injection systems; Injection time; Powdered activated carbon; Similar pattern; Surrogate sediments; Visual comparison; Waterjets; Activated carbon; Equipment testing

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


File Type





© 2010 American Society of Civil Engineers (ASCE), All rights reserved.

Publication Date

20 May 2010