When an environmental remediation company secured a contract to clean up the site of a former manufactured gas plant in a New York community, it realized the process would require a host of different technologies to address contaminated soil as well as ground and surface water.
TIGG Corporation was called upon to provide a solution for treating the contact water because of its ability to meet the company’s requirements of reasonable pricing, immediate rental equipment availability and technical expertise.
TIGG helped rescue the project, which initially employed one of its competitors, who provided inadequate engineering and a solution that was not meeting treatment objectives.
“With the goal of removing contaminants from groundwater in an area near a shopping center, we worked with the remediation contractor to help ensure the safety of the public,” said TIGG Director of Project Engineering Jeff Iman. “We delivered an idea and the apparatus to implement it in a little over three weeks.”
Initially, TIGG developed a water treatment system that combined various technologies to separate oil and coal-tar residuals from the contact water. This process included gravity separators, centrifugal pumps, bag filter units and vessels containing oil-absorbent media and activated carbon.
However, it was soon discovered that cyanide was prevalent in the water. The remediation contractor suggested that iron coprecipitation be used to treat the water and remove the substance. Prior to implementing this plan, the contractor asked TIGG to confirm the treatment process in the laboratory.
After meticulously bench-testing different treatment methods, TIGG identified an anion exchange resin as the best method for removing cyanide from the contact water.
Once the environmental remediation company saw the test results, TIGG incorporated a secondary bag filter skid into the plan and added two anion water filtration vessels. This additional equipment safely removed the cyanide from the water.
As part of its overall service agreement with the environmental remediation contractor, TIGG exchanged spent media with fresh media in the filtration vessels, while offering continuous technical support on the overall process.
“Thanks to our bench testing and ability to integrate various technologies to meet changing needs, the project was executed in a timely and effective manner,” said Iman. “The end result was clean water ready to be introduced back into the local ecosystem.”