FIELD: chemistry.
SUBSTANCE: invention relates to waste water treatment and can be used in chemical and biological industry. Biological treatment of liquid is carried out in reactor 100. Reactor 100 has packing layers 102, the first layer consisting of hollow elements 120 and the second consisting of porous carrier elements with 6-8 pores per centimetre. The stream of liquid is fed into the reactor 100 through a distributor 130. Gas is fed through a diffuser 138. The purified liquid comes out through an outlet 134.
EFFECT: invention enables to avoid excess penetration of the liquid through the reactor, increases degree of purity of the liquid.
10 cl, 2 tbl, 2 ex, 6 dwg
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