Objective
Cyanide emissions in gas scrubbing water from blast furnaces in daily use and in B.F. rundowns sometimes constitute considerable pollution in an aquatic medium.
The cyanide destruction solution adopted consists of having cyanized effluents react with formaldehyde to form glyconitril.
The purpose of this research was to identify and develop criteria for regulating the cyanide reduction process so as to ensure permanent adjustment of the reactive dose. In that context, our work was coordinated with that of the I.R.H. which identified and studied various indicators of the reactive medium condition.
According to the results of this survey, cyanide and formaldehyde polarographic analysis proves to be a very suitable technique for formaldehyde treatment of blast furnace effluents.
Unlike the previous exploratory research the work will focus exclusively on blast furnace scrubbing water, examining in particular plants which have to treat the offtake from closed scrubbing water circuits.
Special attention will be devoted to a plant having recently opted for this type of treatment. The work will supplement the determination and monitoring of reagent dispensing in an experimental installation functioning in tandem without the addition of H2O2.
Broadly, the programme of work will consist of:
- selection of parameters to indicate complete reaction and/or presence of excessive reagent which are compatible with instrument-based measurement in and industrial environment;
laboratory and, if possible, in situ testing and validation of measurement of the parameter(s) selected;
- study of the strategy for adjusting the dose of reagent taking due account of the inertia of the measuring system, that of the treatment process reactor and of the dynamics of effluent variation;
- overseeing of process implementation; assessment of performance and identification of areas for possible improvements and modifications as regards monitoring effluent before and after treatment and as regards the technique for regulating reagent dispensing.
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding Scheme
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Coordinator
4000 Liege
Belgium
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.