Effluent purific. in industrial plants in one part of which grossly polluted effluent arises and =1 heat user operating at 100 degrees C is present, partic. in the textile industry where apart from dyeing equipment with associated washing appts. there are driers, coated plants, etc., installed, is carried out by evapg. the effluent which arises at elevated pressures and transferring the heat energy in the steam produced to the heat user. Pref. for industrial plants operating 200 degrees C the effluent is evaptd. at =30 atmos. (gauge), and the heat in the steam is transferred to a fluid heat carrier suitable for use in the heat user.
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