ISCR · Basque Country

In situ chemical reduction of hexavalent chromium in the Basque Country

3D Microemulsion by REGENESIS injected into the saturated and unsaturated zones of an industrial site.

Date: August 2023
Location: Basque Country
Technique: ISCR
Contamination: Chromium VI (hexavalent)

Litres injected: 6,000 L
Injection points: 6
Maximum depth: 3.6 m
Days on site: 4

The work

An industrial site in the Basque Country with hexavalent chromium (Cr VI), in silty man-made fill, silts with gravels and partly weathered mudstones.

We applied in situ chemical reduction (ISCR) with 3D Microemulsion by REGENESIS in the unsaturated and saturated zones: 6 points and 6,000 litres in 4 days.

Technical sheet

Site type: Industrial land
Soil type: Silty man-made fill, silty ground with some gravels, gravels in a silty matrix and partly weathered mudstones
Affected soil interval: Unsaturated and saturated zones
Technique used: ISCR
Reagents: REGENESIS. 3D Microemulsion
Contamination type: Chromium VI (hexavalent)
Mixing equipment: 1.5 m³ tank, centrifugal and air-operated double-diaphragm recirculation pumps and stainless-steel industrial mixers
Product delivery line: 1″ Teflon hose with stainless-steel braid, resistant to high pressure and chemical risk
Injection equipment: WILDEN P200 air-operated double-diaphragm pump
Injection pressure: 1 – 5 bar
Injection tip: ESP retractable tip with 30 and 45 cm perforated sections
Final injection volume: 6,000 L
Number of injection points: 6
Maximum depth reached: 3.6 m
Days on site: 4
Injection interval (“step”): 30 cm

Gallery

5 photos