Miljøprojekt, 984; Teknologiudviklingsprogrammet for jord- og grundvandsforurening – Stimuleret in situ reduktiv deklorering. Vidensopsamling og screening af lokaliteter. Appendiksrapport

Stimuleret in situ reduktiv deklorering. Vidensopsamling og screening af lokaliteter

Project	contaminants	geology, conductivity	`natural' redox conditions	volume, area	approach	electron donor	status	costs (euro, estimated)	time (years, estimated)
Appingedam *	PCE and degradation products. Estimated load 450 kg of PCE, 55 kg TCE, 55 kg c-DCE en 10 kg VC	clay, peat < 0,1 m/day	sulphate reducing to methanogenic	650 m³ soil	direct injection of 600 litres electron donor and nutrients in 27 points, up to 8 m-bgl	molasses, nutrients	in progress. Increased degradation rates, chlorinated ethenes are degraded to ethene and ethane.		10^-15
Uden centre *	PCE, up to 1.500 g/l	sand, 30 m/day	nitrate reducing	area above intervention level 9 hectares. treated volume 375,000 m³ groundwater	extraction of groundwater, infiltration after electron donor is added, using horizontal drains	100 m³ protamylasse	in progress. Redox conditions lowered to required levels for RD, degradation of PCE to ethene/ethane		5
Nieuwpoort *	PCE, DNAPL present	clay, peat < 0,1 m/day	sulphate reducing to methanogenic	12,500 m³ soil	electro bioreclamation of source zone, direct injection of electron donor in source zone and plume	mixture of ethanol, lactate, acetate and nutrients	finished and approved by regulatory authorities	1,000,000	2.5
De Zon, Breda	PCE, TCE	sand	nitrate-reducing		extraction and infiltration sequential process, RD to degrade PCE, aerobic cometabolic degradation of daughter products.	RD: methanol cometabolic: phenol (and oxygen)	finished, low concentrations left (< 100 g/l). Site is being redeveloped for housing
Medemblik *	PCE, TCE	clay	methanogenic		excavation of source zone, direct injection of electron donor in plume	HRC	in progress. Site is redeveloped, plume is monitored	200,000	5