FIELD: waste water treatment. SUBSTANCE: installation includes settler containing waste water supply and treated water and sediment discharge units; cutoff plate with electromotor; electromotor control system; and sensor provided with double-arm lever with counterweights, constant magnet, and disk interacting with magnet-controlled contact and diaphragm placed on sensor cap. Contact and diaphragm may rotate in vertical plane in two perpendicular directions. EFFECT: improved construction. 2 dwg
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