Churngold Remediation, a specialist UK remediation contractor, has won an award for Best Conceptual Design for a remediation project using Klozur^® pursulfate as the chemical oxidant.

The Brownfield Briefing Remediation Innovation Awards aim to recognise best practice in remediation and the use of remediation technology throughout the UK. All entries were assessed by an individual panel of experts from the remediation industry, members of the CL:AIRE Technology and Research Group as well as academia.

Klozur persulfate activated with lime was used to remediate land contaminated with chlorobenzene, dichlorobenzene isomers, trichloroethene and tetrachloroethene at a former chemical manufacturing facility in The UK. A combination of its high oxidative power and the ability to apply this product safely and cost effectively made Klozur persulfate the oxidant of choice.

Stuart Mcdonald, overseeing the project for the Environment Agency concluded the following within his sign off correspondence for the project: “In reviewing all available documents, I am satisfied that the remediation scheme has resulted in a massive reduction in the bulk contamination at the defined ‘hotspots’ and I consider this process to be particularly successful”

Ross Pollock, Technical Director of Churngold Remediation (contact: Ross.Pollock@churngold.com) stated “We carried out a full appraisal of all suitable in-situ techniques. Due to the low permeability heterogenous geology, high concentrations of contaminants, the scale of the project and the limited timeframe required for remediation, the only option considered viable was in-situ chemical oxidation delivered using soil mixing techniques. Persulfate activated by lime was proven at laboratory scale to be the most effective oxidant choice and was a resounding success when applied in the field.”

This remediation project also came runner up for the award of Most Innovative Remediation Method.