Research & Development
Remediation underpinned by good science
as a technological market leader amongst remediation service
providers, is committed to investing time and money to the ongoing
research and development of new technologies that provide QDS with
better tools to tackle the complex myriad of problems that
brownfield regeneration presents.
An example of this commitment is the QDS In House
laboratory, set up in 1997, which is devoted to the development of
remediation technologies and to optimisation of ongoing
remediation projects. Through this in-depth assessment of emerging
technologies by feasibility studies with respect to performance,
cost and time, QDS is able to remain at the cutting edge of
of how this gives QDS a unique competitive advantage in the
marketplace, is research into the increasing problem of residual
DNAPL impact at sites. At present, the options available to deal
with residual DNAPL impact at depth on sites is limited both as a
result of the nature of the contaminant and due to the problems of
unwanted mobilisation that some technologies, i.e. steam, can
create. QDS, through an extensive laboratory test programme
followed by full-scale application, have developed the technology
of Surfactant Flushing to be able to both solubilise DNAPL
to allow abstraction within groundwater (up to 4 orders of
magnitude increase in dissolve phase concentrations have been
achieved), and also to increase the mobility of the DNAPL, whilst
controlling the DNAPL properties to prevent unwanted downward
migration into deeper sensitive groundwater zones.
through research into the use of advanced catalysts for oxidation
of organic contaminants, QDS can now offer UV Photocatalytic
Reactors, as an alternative to Granular Activated Carbon (GAC)
filtration, in response to the increasing cost and environmental
pressures associated with using GAC. This technology was also
developed in the QDS laboratory over a period of 2 years prior to
application on site.
technologies that have been further developed and tested within
the QDS laboratory over the previous 12 months include:
Application of modified Vegetable
Oils and Emulsified Vegetable Oils (EVOs).
Testing various Zero Valent Iron
(ZVI) products to allow site optimisation.
Testing stabilising additives to
improve the applicability of Fentonís Oxidation.
Development of a range of
advanced field screening methods to allow rapid assessment of site
conditions during a remediation project.
In-situ Thermal Conductive Heater
testing to allow site application for increased DNAPL recovery.