| Summary: | A project report submitted to the Faculty of Engineering, University of the
Witwatersrand, Johannesburg, in partial fulfilment of the requirements for
the degree of Master of Science in Engineering.
Johannesburg, 1997 === As attempts are made, through new regulations, toimprove landfill standards in
South Africa, while competition is experienced for limited resources, acceptable
alternative technologies for landfills are sought. Paper mill pulps and sludges
have been tested. and used, extensively for capping landfills, particularly in the
USA. The purpose of this study was to determine whether the pulp and
combined sludge produced by the Sappi Enstra Mill. in Springs South Africa. is
suitable for the capping of their landfill.
Trends in the landfilling of waste. the use of various hydraulic barrier systems.
and comparative testing programmes are reviewed. Laboratory and field tests
indicate that the Enstra pulp and combined sludge <Iresuitable for the capping of
the landfill as they meet hydraulic conductivity specifications. and results are
similar to the tests conducted in the USA. In addition. the use of the pulp and
sludge has advantages over the use of clay. === MT2016
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