FIELD: chemistry.
SUBSTANCE: device for sewage water purification from heavy metals by means of ion-exchange filters includes anion-exchange filter with strong-base anionite in OH-form, mixer and water-clarifier, as well as cation-exchange filter with strong-acid or weak-acid cationite in H+-form, located after water clarifier. Water clarifier is made with partitions in form of coaxially located blunted cones, separating inner space into thin layers. Mixer, to which sewage water is supplied after strong-base anion-exchange filter, represents cylindrical tube with placed in it screw elements in form of twisted at angle flat left- and right-bent plates, alternating along tube length.
EFFECT: improvement of ecological situation, prevention of metal overshoot and increase of duration of cation-exchange filter operation between regenerations.
1 dwg, 1 ex
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