PRB + ISB · PetroFix · Algeciras (Cádiz)

Permeable reactive barrier against hydrocarbons in Algeciras

PetroFix colloidal activated carbon and electron acceptors (EAB) by REGENESIS, injected by Direct Push on an industrial site.

Date: August 2025
Location: Algeciras (Cádiz)
Technique: PRB + ISB · PetroFix
Contamination: Hydrocarbons (TPH C5‑C40)

Litres injected: 9,100 L
Injection points: 5
Maximum depth: 6.2 m
Days on site: 2.5

The work

An injectable permeable reactive barrier (PRB) to stop hydrocarbons (TPH C5‑C40) on an industrial site in Algeciras: PetroFix colloidal activated carbon combined with in situ bioremediation (ISB) using electron acceptors (EAB) by REGENESIS.

At each of the 5 points we injected every 30 cm from 6.00 up to 2.10 metres, 13 steps per point, at 1 – 2 bar and an average flow of 31.5 l/min. In total, 9,100 litres in two and a half days.

Technical sheet

Site type: Industrial land
Soil type: Sandy man-made fill and natural silty-sand soil
Affected soil interval: Unsaturated and saturated zones
Technique used: PRB of PetroFix colloidal activated carbon + ISB with electron acceptors
Reagents: REGENESIS. PetroFix + EAB
Contamination type: TPH (C5‑C40)
Mixing equipment: 1 m³ tanks, centrifugal drum pumps for transfer and mixing, and industrial mixers
Product delivery line: ½″ flexible high-pressure hydraulic hose, resistant to high pressure and chemical risk
Injection equipment: High-pressure triple-diaphragm pump
Injection pressure: 1.0 – 2.0 bar · average flow 31.5 l/min
Injection tip: ESP retractable tip with 30 cm perforated section
Final injection volume: 9,100 L
Number of injection points: 5
Maximum depth reached: 6.2 m
Days on site: 2.5
Injection interval (“step”): Every 30 cm, from 6.00 to 2.10 m (13 steps)

Gallery

5 photos