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Research
leachate reduction of boron salt by adding clays to top soil
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- Soil
columns made to test leachate throughout using different clays,
clay and boron concentrations
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-
IHRIS™
system for substrate dosing in groundwater
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- Pilot-testing
of manual operated system succesful: programming of IHRIS™
control system planned
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-
Improved
horizontal drain placement system
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- Pneumatic
sonic system tested and modifications planned before next full
scale project
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-
Increase
CO2 binding capacity of soil during in-situ remediation projects
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- Several
CO2 binding processes identified; stimulation in pilot-study
ongoing
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-
QC-software
for anaerobic degradation
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- Preliminary
sensor arrays functional and with software implemented in
substrate injection project
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-
AP04
fast leaching test
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- Ultrasonic
leaching columns made; analysis show close comparison with
standard tests
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-
Steamstrip
simulator
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- Lab
set-up designed, in cooperation with Technical University Twente
(The Netherlands)
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-
Heterogeneity
profiler to determine micro-flow zones (<5 cm) continuous
over 100 m deep profiles
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- Prototype
with tracer test tested. Discussions with development partners
started
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-
GHCD
membranes can be used to remove Nitrate from drinking water
BEFORE it is pumped from the aquifer.
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- The
Geo & Hydro Controlled Delivery membranes are very well
suited to this purpose.
Several
drinking water supply companies like to participate in the
project.
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-
Remediate
domestic heating oil tanks for €5.000, all-in?
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- System operational. Cost depends on scale of application
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-
ZERO
energy remediation
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- More then 10 techniques are
available: difficulty is that actually no-one has a benefit from
these techniques except the (un-knowing) customers
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Smart
Sensors can feed dataloggers information not normally measurable
with chemical sensors
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- Using intelligent dataloggers
these data can used as input to control complex aerobic /
anaerobic groundwater remediation systems.
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-
In-situ
Steam destilation pilot project to remove migration-sensitive
components from deep DNAPL layers
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- Feasibility study completed
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-
Verification protocol in-situ remediation projects
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Risk-based,
toxicological, or value-based clean-up targets need well
defined, statistically sound verification protocols. A
consortium of experts chaired by Geo & Hydro will undertake
the production of a 'cook-book' protocol which result in a
program distributed on CD-ROM
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- Workshop
in preparation of this study has been held.
A pilot project is launched by the Prov. of Utrecht.
First draft of guidelines written.
1 year contract for writing 2nd opinion reports of SP's
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-
Multi
Point Porewater Sampler (under water)
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- Design
and make (support for further development obtained from several
waterboards, awaiting add. funding)
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-
Application
of interfacial and partitioning tracers to determine mass of
DNAPL contamination
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- The
study (for 40% a lab parameter characterisation and 60% a field
trial in 3 sedimentological settings) is being discussed with
parties at present.
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-
Nutrient
flux in the smearzone
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-
Method using
rhiosphere samplers succesfully applied
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-
Unsaturated
zone gas-flux determination to quantify natural attenuation in
'smear-zone' and influence of meteorologic variations.
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Fully
computerised set-up linked to sample ports in a 6 meter deep
measurement 'well' of 1.2 m diameter. Numerous sondes are
hydraulically pushed horizontally up to 3 meter from the
observation well. For low voltage sensors (such as the x, y, z
soil-air velocity sensors) amplifiers are placed at the
different floors in the well.
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- Study complete,
soilgas-probes, as well as x,y,z soil air velocity sensors
successfully developed and integrated in study of natural
attenuation in the 'smear-zone'.
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-
Development
of groundwater flow velocity and directional sensor.
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- Prototype with simpler heat
source tested. Discussions with development partners started
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-
CDT
destillation system (patent applied for in 48 countries): 2 x 20
ltr. pilot operational
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- As solvent recovery, perfume
production, wastewater minimalisation and low cost water prod.
system
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Optimalisation
of fully automated SVE / Bioventing test instrument which allows
soil air pressure built-up and transient analysis to be made
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- Using microbar-sensitive
pressure transducers and 32 channel PC dataloggers with 10 msec
recording speed several sites have been tested (sensitivity
sufficient to record passing trucks!)
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-
Development
of in-situ Fe(III)-Fe(II) and NO3 reduction tracking
system
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- Trial
system in place to test efficiency of Fe(III)NO3 injection in silts and peat to optimise anaerobic degr. below a
zone of aerobic (sparging) degradation. Improvements
currently being made on 2nd & 3rd site.
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-
Development
of 16 channel automated soil vapour sampler and GC-TCD mol-sieve
analyser
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- Application operational Jan
1998. In use in MoD research project coupled to meteo station
with 3D wind turbulence meter.
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-
Development
Innovative Solvents (for extraction to allow analysis of soils
and water) and PHCs Recovery Systems
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- Research funded partly by
Department of Defence; further funds being sought.
Patent applied for while
application and Improvements ongoing.
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-
Improve
radius of influence GHCD membrane biofence system
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- Pilot-trial with auxiliary
sandfilled side-holes currently underway in Smilde, Drente NL.
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-
Improve In-Situ O2 - diffusion tracking device
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- Status: operational.
Trials
running at two sites: Deventer: passive aerobic remediation using
(MgO2 )
Capellen: active aerobic
remediation in clay using HP bioventing and Fe-lignosulphanate to
open clay bonds
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-
Development
of Software to Assess the Duration In-situ Remediation
Techniques
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- Application and Improvements
ongoing
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-
Development
of Remote Control Systems for In-situ Remediation Systems
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Cost
Reduction towards Maintenance and Trouble shooting;
-
Fast
Optimisation of the Systems, prototype IHRIS ™
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- Application at a site in
Luxembourg (Capellen) and at a site in Holland (Ter Apel) ongoing
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-
Development
of On-site Treatment of Contaminated Groundwater and Soil
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Cost Reduction towards:
-
Treatment of Contaminated Groundwater and Soil;
-
Reduction of Energy Consumption;
-
Reduction of the Emission of PAHs and Noise;
-
Reduction of the Transport of Soil
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- Application of a Ground-water
Treatment System at a site in Luxembourg (Schengen) ongoing;
Evaluation of the
Environ-mental Impact of a New Soil Treatment System completed
(mercury, oils, /PAHs)
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-
Development
of an Innovative Technique to Determine the BOD of a Water or a
Soil Sample
|
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- Application now standard and
has been auto-mated with PC data acquisition software, however
improvement of the measuring system ongoing
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-
Determination
of the Diffusion Rate of Oxygen dissolved in the Saturated Zone
(Technique developed by Geo & Hydro)
|
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- Application with respect to
sites in Holland (Ter Apel, Diemen) completed; results comparable
with calculated Diffusion Rates, used as feedback system with
full-scale sparging projects
|
|
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-
Determination
of the ration between primary and secondary Hydraulic Conductivity of a Layer of Clay (Technique developed
by Geo & Hydro)
|
|
- Application with respect to a
depot site in Luxembourg (Bertrange) completed; results
comparable with results obtained by a classical elaborate
technique
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-
Study of the Migration of Floating Layers in the Smear Zone
|
|
- Application and Research of
the use of tensiometers pre-saturated with hydrocarbons at a site
in Belgium (near Brussels Airport) ongoing
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|
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-
Determination
of the Influence of Humic Substances upon the Analysis of PHCs
in Soil
|
|
- Research ongoing (based on
White Rot Fungy project for Shell Australia in 1992)
|
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-
Stimulation
of the Conversion of BTEX, PAHs and PHCs into Humic Substances
|
|
- Research ongoing (Department
of Defence finances part of this research)
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|
|
-
Development
of Soil Separation Techniques
|
|
- Research on Hydro-dynamic
Separation of Contaminated Fractions of Soil and laser analysis
of fractions ongoing
|
|
|
-
Treatment of mercury contaminated soil
|
|
- Positive evaluation from
third party laboratory has led to ‘in principle’ acceptance.
|
|
|
-
Development
of Portable Measuring Systems
|
-
Cost Reduction towards:
Treatment of Contaminated Soil and
Groundwater; Analysis of Soil, Soil Air and Groundwater Samples;
Determination of the Standard Deviation of Analysis Results;
-
Rapid
Optimisation of On-site Treatment Systems for Contaminated Soil
and Groundwater
|
- Classifying
of Soil and Groundwater ongoing;
Application
of Organic Vapour Analysers ongoing
Statistical
Analysis ongoing;
Application
at a site in Luxembourg (Schengen) ongoing; a site in Belgium
(Verlaine) ongoing; sites in Holland (Woudenberg /Soest/Maarn)
ongoing
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|
|
-
Quantifying
Natural Attenuation and biodegradation bottlenecks
|
|
-
Several
studies ongoing: examples: an AFB site in Holland (Soesterberg)
is being the least confidential, 4 for an international paint
manufacturer and 3 for an oil multinational
|
|
|
-
Geo
& Hydro Controlled Delivery (GHCD) System consisting of a
flat membrane incorporated in a drainage system
|
|
- Research
ongoing in conjunction with large manufacturer of non-woven
synthetics
|
|
|
-
Geo
& Hydro Controlled Delivery (GHCD) System consisting of
cylindrical membranes, with or without an in-well groundwater
circulation pump.
|
-
Optimalisation
of aerobic Bio Degradation of Petroleum Hydrocarbons (PHCs) by
Controlled Dosage of Nutrients
-
Stimulation
of anaerobic Bio Degradation of Petroleum Hydrocarbons (PHCs) by
Controlled Dosage of electron-acceptors
-
Through
fluid-fluid extraction removal of DNAPL layers on deep
impervious layers
|
- Applied
as a remedial technique at sites in Holland: BP Eindhoven, Air
Force Base Soesterberg, Transport depot Ter Apel;
To
be applied as a controlling technique to prevent migration
(Biofence) at a site in Holland: old steel melter in Hengelo(O)
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|
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-
MPRS
recovery system
|
|
- Operational
|
|
|
-
Vacuum
controlled double wall fuel tanks using flexible liner over
permeable layer
|
|
- Commenced
patent but dropped due to economics. Product later appeared on
market as the Perma-Tank.
|
|