Sewage sludge disposal constraints and opportunities


The problems of disposing of sewage sludge, possibly by re-use on agricultural land are considered in the context of the interaction of traditional pollution control philosophies, policies and strategies of EEC member states. After briefly reviewing the evolution of the 'pragmatic' policies controlling the discharge of trade effluents to rivers or sewers, in England and Wales, investigations focus on problems caused by heavy metal contamination of sludge. Literature reviews are used to examine:- How sludges become contaminated; The extent of that contamination; How sludges have been disposed in the past; Some indication of the future contraints on disposal by those means. A contribution of the study is in an analysis of the evolution of the DOE/NWC 1981 Guidelines on the disposal of sludge to land. Guideline constraints are compared to those specified in proposals for an EC Directive. A further contribution is in carrying out a case study in which the implications for trade effluent controls in an inner city catchment treatement works area are considered, if sewage sludge at present disposed to sea is disposed by use on agricultural land. A simple model makes use of 1980/81 computer file data. Important features of the use of this model are in simulating the effects of reducing metal inputs from a few known key sources, and of the elimination of high sludge metal concentration cases on the achievement of simple and 95% probability of compliance with proposed EC constraints. Results are discussed in relation to the findings of literature reviews. The effectiveness of the current politico-economic frame-work is assessed. The use of traders' perceptions of the 'rules of the game' in evaluating current controls is explored. Techological and policy implications are deduced, conclusions reached and a basic premise questioned.

Divisions: Aston University (General)
Additional Information: © Harold Mess, 1985. Harold Mess asserts their moral right to be identified as the author of this thesis. This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from the thesis and no information derived from it may be published without appropriate permission or acknowledgement. If you have discovered material in Aston Publications Explorer which is unlawful e.g. breaches copyright, (either yours or that of a third party) or any other law, including but not limited to those relating to patent, trademark, confidentiality, data protection, obscenity, defamation, libel, then please read our Takedown Policy and contact the service immediately. This Thesis is formed of 2 volumes.
Institution: Aston University
Uncontrolled Keywords: sewage sludge,trade effluent,pollution control
Last Modified: 28 Jun 2024 07:25
Date Deposited: 27 Jun 2011 07:50
Completed Date: 1985-03
Authors: Mess, Harold

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