Development Of Process Envelopes For
Cement-based Stabilisation/solidification
Of Metal Treatment Filtercakes
Author(s)
J. A. Stegemann & Q. Zhou
Abstract
Treatment by stabilisation/solidification with cement-based binders (S/S) is
an option for wastes that cannot be prevented or reduced, such as metal
treatment sludges from a variety of industries. A laboratory research project at
University College London (UCL) is being conducted to generate a coherent
body of data regarding S/S of metal treatment filtercakes, with the intention of
investigating relationships between engineering and leaching properties and
stabilised/solidified (s/s) product composition.
This paper reports on the results from application of screening tests
(consistence, bleeding, setting time, unconfined compressive strength (UCS),
distilled water extraction, hydraulic conductivity) to more than 40 s/s products
containing four different metal treatment sludges treated with four different
binder systems. The threshold values of the key properties can be used to define
process envelopes that describe the limits of applicability of S/S to the chosen
waste types.
This investigation of metal treatment filtercakes is part of the ProCeSS
project, which is being conducted by a consortium of five universities and 17
industrial partners, under the UK DIUS Technology Strategy Board
(TP/3/WMM/6/I/ 15611).
Keywords: industrial waste treatment, testing, leaching.
1 Introduction
Treatment by stabilisation/solidification with cement-based binders (S/S) is often
proposed for wastes from the chemical and metal industries that cannot be
Keywords
industrial waste treatment, testing, leaching.
Related Book
Other papers in this volume
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