INVESTIGATION AND CHARACTERIZATION OF SOILS, AQUIFERS AND SURFACE WATERS

  • Preliminary report of the soil situation, baseline report, and periodic reports on the state of the soil
  • Voluntary and regulatory inspections of potentially contaminated soils and associated groundwater
  • Soil and groundwater conformity assessment according to ISO 17020 – ENAC (see KEPLER Inspection Entity)
  • Technical assistance in case of legal requirements
  • Characterization of solid or liquid waste for landfill management or other authorized managers.
  • Environment impact assessment
  • Health and Safety Plans in decontamination projects
  • Detailed investigation of soils and aquifers for the preparation of decontamination projects and their technical and economic viability in the purchase or before a change of use (due diligence)
  • Studies and project design for Monitored Natural Attenuation
  • Investigation and characterization of soil, groundwater and surface water:
    1. Light and heavy geotechnical drillings.
    2. Installation of piezometers
    3. Design and execution of soil and groundwater sampling
    4. Physical-chemical and biological analysis in the field and laboratory
    5. Characterization of solid and / or liquid waste for landfill disposal or other authorized managers
    6. Isotopic analysis (forensic studies, biological treatments)
    7. Electrical tomography
    8. Eco-toxicity essays
  • Geological and hydrogeological studies for prevention and remedying environmental damages
  • Biogeochemical studies for the determination of REDOX conditions (prior to biological remediation)
  • Modelling the transport of substances in soils and aquifers
  • Quantitative Risk Assessment (QRA)
  • Forensic Studies to receive information about the origin of an environmental damage
  • Eco Balance and Optimization of the sustainability of decontamination projects (Green Remediation)
  • Preparation of complementary and compensatory remediation plans for contaminated soil and aquifer recovery projects in accordance with Directive 2004/35/CE on environmental liability

REMEDATION OF CONTAMINATED SOILS

  • Preparation of complementary and compensatory remediation plans in contaminated soil and aquifer recovery projects in accordance with Directive 2004/35/CE on environmental liability
  • Eco Balance and Optimization of the sustainability of decontamination projects (Green Remediation)
  • Excavation and replacement of contaminated soil
  • Management of inert, non-hazardous and hazardous waste
  • Microbiological and biological remediation (see Microbiological and Biological Remediation)
  • Phyto recovery (see Microbiological and Biological Remediation)
  • Stripping of volatile compounds
  • Gas treatment (thermal, catalytic, biofilters, activated carbon and others)
  • Monitoring of remedying processes
  • In situ chemical oxidation and reduction (ISCO, ISCR)
  • Thermal techniques – thermal desorption, improvement of pollutant availability, contaminant mineralization, etc.

REMEDIATION, PROTECTION AND AVOIDANCE OF DAMAGE TO SURFACE AND UNDERGROUND WATERS, THE RIVER OF THE SEA AND THE RIVERS

  • Preparation of complementary and compensatory remediation plans in contaminated soil and aquifer recovery projects in accordance with Directive 2004/35/CE on environmental liability
  • Eco Balance and Optimization of the sustainability of decontamination projects (Green Remediation)
  • Pilot trials of decontamination processes
  • Feasibility studies of decontamination techniques
  • Dual and multiphase extraction of LNAPL and DNAPL
  • Depuration of groundwater with extraction systems
  • Depuration of contaminated water: coalescing filter, activated carbon, MBBR, biofilters, stripping, resins, microfiltration and others
  • Extraction of interstitial gases
  • Gas treatment (thermal, catalytic, biofilters, activated carbon and others)
  • Passive and reactive hydraulic barriers
  • Monitoring of decontamination processes
  • Microbiological and biological treatments (see Microbiological and Biological Remediation)
  • In situ chemical oxidation and reduction (ISCO, ISCR)
  • Development, assembly, maintenance and operation of treatment plants
  • Automation and remote control of remediation processes
  • Projects and monitoring of Monitored Natural Attenuation processes (MNA)

MICROBIOLOGICAL AND BIOLOGICAL TECHNIQUES (BIORREMEDIATION)

In the application of bioremediation as a technique for the recovery of contaminated soils and waters, processes are used in accordance with biomimicry principles. For this reason, with good reason, Microbiological and Biological Techniques can be considered the most sustainable in the short, medium and long term. These techniques are the most used in in-situ decontamination projects, although ex-situ treatments are also carried out when there are no structural risks derived from the excavation of the soil (dynamic or static biopiles).

The objective of these processes is the transformation of hazardous substances, in biomass, water and CO2, through the application of microorganisms, fungi, plants or enzymes.

IN SITU AND EX SITU BIORREMEDIATION STRATEGIES:

NATURAL ATTENUATION (in-situ): site monitoring to control the natural degradation of the pollutant.

BIOSTIMULATION (in-situ y ex-situ): by the addition of a co-substrate (e. g. injection of methane during the degradation of trichlorethylene), nutrients (mainly nitrogen and phosphorus) or gaseous stimulants (O2 o CH4).

  • Injection of electron acceptors (NO3) /electron donors (halogenated hydrocarbons or metals)
  • Air sparging
  • Diffusion of oxygen
  • Methane injection
  • Bio-oxidation walls

BIOAUMMENTATION (in-situ y ex-situ): inoculation of microorganisms, fungi and / or their enzymes to accelerate the degradation of the contaminant at the site.

PHYTO-MEDITATION (in-situ y ex-situ): use of certain plants for the recovery of contaminated sites. There are different mechanisms:

  • Phytoextraction (heavy metals)
  • Phytodegradation (organic compounds)
  • Rizofiltration (organic compounds)
  • Phytostabilization (soil stabilization, reduction of erosion)

PROJECTS OR SERVICES LINKED TO THE MICROBIOLOGICAL TECHNIQUES:

Among the projects in which microbiological techniques are applied, the following stand out:

  • Laboratory tests for the determination of biological degradation capacity
  • Monitoring of recovery processes in soil and water
  • Monitoring of recovery and decontamination processes in soil and water
  • Monitoring of Natural Attenuation Projects (MNA)
  • Design, assembly and monitoring of dynamic and static biopiles
  • Bio-transformation of heavy metals
  • Monitoring of the Biogeochemical Baseline

During the monitoring of the bioremediation processes it is necessary to control a series of key parameters in order to evaluate the microbiological performance, directly linked to the elimination rate of the contaminant. The analytical battery can be classified in two blocks:

Microbiologic analysis:

CFU counting to measure abundance and / or specificity

  • Total Heterotrophs
  • Specific degradation

Molecular biology techniques

  • DNA extraction (PCR / qPCR): presence and / or abundance of genetic diversity
  • RNA extraction (RT-qPCR): genetic expression
  • Enzymes: microbiological activity
  • Phospholipids (AGF): active microbial biomass

Ecotoxicity tests (calculation of the LD50 and / or germination index)

Physicochemical analysis:

  • Soil characterization: granulometry, texture, porosity, Koc
  • Environmental conditions: Temperature, pH, ORP, Conductivity, and Humidity
  • Nutrients (NH4+, PO4-3, K, etc.)
  • Electron acceptors(O2, NO3, Fe+3, etc.)
  • Polluting concentration

EMERGENCY MANAGEMENT WITH DANGEROUS PRODUCTS

The company offers a comprehensive spill management service with hazardous products in the land and marine areas in order to facilitate customers compliance with the obligations of operators derived from the Directive 2004/35/CE on Environmental Liability:

  • Protection and Avoidance of environmental damages according to Directive 2004/35/CE on Environmental Liability
  • Restoration of environmental damages (primary, complementary and compensatory restoration, according to the Directive 2004/35/CE on Environmental Liability
  • Management with the competent authority
  • Management with expert companies
  • Management with insurance companies

LANDSCAPE RESTORATION

  • Landscaping restoration plans for degraded spaces
  • Restoration with loan lands and soil improvement
  • Sowing and planting with native species indicated for the site

DECONTAMINATION OF INDUSTRIAL BUILDINGS

  • Avoidance measures and protection against environmental damage
  • Decontamination of industrial and military buildings in use
  • Decontamination of industrial and military buildings before demolition (reduction of hazardous waste to be managed)
  • Waste management and recovery plans

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