Title: Remediation of Perchloroethylene with Chemical Oxidation with Potassium Permanganate 
Resource Type: document --> technical publication --> report 
Country: Denmark 
Language(s): Danish
English
 
Year: 2003 
Availability: Environmental project, Miljørapport nr. 872 
Author 1/Producer: Jørgensen, T.H. 
Other Authors/Producers: Jepsen, J.D.; Bordum, N.E.; Skou, H. og Bjerg, P.L. 
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Publisher: The Danish Environmental Protection Agency, Miljøstyrelsen 
Publisher City: Strandgade 29, DK-1405 Copenhagen K, Denmark 
ISBN: 87-7614-023-7 
Report / download web link (=direct link): http://www2.mst.dk/common/Udgivramme/Frame.asp?pg=http://www ...  
Format (e.g. PDF): PDF 
Size: (e.g. 20mb) 6.121 
EUGRIS Keyword(s): Contaminated land-->Remediation options-->In situ treatment technologies
 
Short description: Chemical oxidation using potassium permanganate.has been used as a supplemental in-situ method for the treatment of a perchlororethylene contamination in groundwater. Remediation using KMnO4 is an effective supplementary remediation operation in the saturated zone and can be more cost effective and faster than traditional pump and treat activities. 
Long description: The strategy of the remediation activity was to inject liquid potassium permanganate into the groundwater aquifer at groundwater level upstream the source area. To improve the horizontal distribution of oxidant, groundwater pumping was established downstream the contaminated area in order to focus the oxidant in this direction. A total of 60 m³ 5% potassium permanganate solution was injected. Conductivity measurements, colour observations and a bromide tracer were used to describe the horizontal and vertical distribution of the oxidant. Before the remediation activity, concentrations of up to 2,000 ìg PCE/l were measured in the groundwater. The remediation attempt showed a distinctive decrease in the PCE concentrations in both the source area (less than 10 µg/l) and in the downstream direction. An almost complete clean up both horizontally and vertically was achieved apart from a residual contamination in the silty and finegrained deposits. An increased level of chromium was found in the groundwater after the potassium permanganate injection. The increase corresponds to 100 times the normal background level or 5.5 times the regulatory value for chromium in potable groundwater. No other trace metals exceed the regulatory values, but a slight increase in aluminium concentrations was seen due to the injection. 
Submitted By: Dr Jacqueline Falkenberg WhoDoesWhat?      Last update: 11/04/2007