Passive skimming equipment accumulates free product over time, they do not pump product to the surface. They use floating intake filters that allows only free liquid phase product to enter or absorbent material in cage bailers. The product is removed after the skimmers are brought up to the surface. The goal satisfied by skimming systems is the collection of free product with little or no recovery of water. They also feature low cost and simple operation and maintenance.
Geotech Passive Recovery Canister (PRC)
The Geotech PRC (Product Recovery Canister) is a passive skimmer with a floating intake that separates and recovers light hydrocarbons from ground water. The Geotech PRC collects floating product down to a sheen then is emptied through a discharge valve at the bottom of the canister after being raised to the surface.
Geotech GeoSorb Sock
The GeoSorb is designed to recover free phase hydrocarbons from 2" or 4" (5cm or 10cm) and larger wells. The GeoSorb System consists of a stainless steel screened cage assembly and a product selective absorbent. The system is lowered down the well where it passively absorbs free product.
Geotech Gravity Feed