A pneumatic operated oil-phase extraction system under ATEX standard was installed and operated at a tank area facility in Morocco. The thickness of the floating oil phase was reduced to 70 - 90% after only a few months of operation.
CHC compounds present in ground water were dissolved by thorough rinsing with purified ground water at approximately 90 ° C. For this purpose, a 150 kW continuous water flow heater with electrical control was built and operated at the contaminated site. The heat propagation was monitored using built in in-situ temperature sensors. Additionally, a mobile GC system was operated in the ground water flow to monitor the efficiency of remediation.
Wedel hydraulic distribution of active agents for the biostimulation of in-situ reductive CHC dechlorination
A 3D system consisting of horizontal and vertical circulation cells were used to form an actively managed biological reduction zone for the remediation of CHC contaminated ground water in a sandy aquifer. The groundwater damage was remediated by active treatment after only 18 months. Degradation of 99% of CHC was observed during this time.
Sensatec was contracted by the Berlin-Friedrichshagen waterworks to set up one of Europe's largest actively managed bioreaction zones for the removal of pollutants from an aquifer. A bio-oxidation wall of over 800 m wide and 50 m deep was used to purify groundwater flowing to the waterworks.
The efficiency of fluid injection based ground water remediation techniques is limited due to the fact that in most traditional cases, the liquids injected underground do not possess enough pressure or are constantly under pressure and as such, follow the path of the least hydraulic resistance giving rise to the formation of preferred flow paths. The pressure pulse process is first carried out by dynamising the injections and then finally allowing the liquid to form a uniform distribution thereby increasing the absorption capacity of the matrix. At the same time, the formation of preferred flow paths by the injected liquid is prevented.
Oil contaminated drilling sludge was stored for decades in unprotected polders in desert -like areas of an oil field. Recently introduced environmental regulations require the remediation of these polders. Consequently, a biological cleaning process with static regeneration was executed. After 6 months of operation, the threshold limit value for mineral hydrocarbon concentration, which should be below 0.5 %, was achieved.
The interdisciplinary Sensatec team is comprised of process technicians, engineers, biotechnologists, hydro geologists, soil scientists and geologists as well as electrical and environmental protection engineers, among others.
- Remediation Technologies
- Environmental Biotechnology: Reactants, Microbial Compounds
- Laboratory Analysis, Process Analysis
- Sensor Technology
- Drilling Technology
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