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The article presents an approach to centralised collection, recycling and removal of waste pickling and galvanic solutions and sludge designed for small steel making plants and workshops having the described processes and using flow-through filter blocks.

Data of experimental study of hydrodynamics, heat and mass transfer of packing with adjustable parameters and some comparative characteristics of the packed device with packing, which have wide industrial application, are given in the article.

The paper provides a description of the developed experimental plant for studying hydrodynamic and heat and mass exchange processes in packing devices of all kinds of configuration, examples of the obtained data and original classification methods for processing experimental data. The authors describe hydrodynamic characteristics allowing carrying out classification studies and obtaining the necessary data to complete the developed methods for calculating mass exchange devices: the retaining capacity of packing devices at liquid and gas phases in particular. The authors provide the criteria function X=f(Rem) which gives a direction for industrial application of packing contact devises. The function is based on the analysis and generalization of the experimental data obtained in express studies of single-phase filtration curves. The paper also covers an example of the experimental data of the response function in case of recognizing flow structures of contact phases which allow obtaining necessary data to complete the developed diffusion models of mass exchange processes and implement calculations of mass exchange packing with a high precision.

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