METHOD OF THE DEEP AFTER-PURIFICATION OF THE BIOCHEMICALLY OXIDIZED WASTE WATERS Russian patent published in 2007 - IPC C02F3/02 C02F3/10 

FIELD: environmental protection; methods of the deep after-purification of the biochemically oxidized waste waters.

SUBSTANCE: the invention is pertaining to the field of purification of the domestic waste waters and the close to them by their composition industrial waste waters. The method provides for the after- oxidation of the organic compounds exercised in the three-stage bioreactor of the after-purification, and the subsequent filtration. All three stages of the bioreactor of the after-purification are supplied with the cartridges with the filamentary carrier for the attached microflora, and the first stage is aerated. In the second and third stages of the bioreactor of the after-purification the laminar mode of the liquid movement is maintained. At that, the value of the specific surface of the filamentary carriers for the attached microflora used on the third stage of the bioreactor of the after-purification is bolstered in 1.5 times exceeds the specific surface of the filamentary carriers of the first two stages of the bioreactor of the after-purification at the specific value of the fixed biomass according to the ashless material of the filamentary carriers of the first stage of the bioreactor of the after-purifications of no less than 100 g/m. In the after-purification filters as the loading they use the oxidized carbon-containing sorption material with the concentration of the surface oxygen-containing groups of no less than 0.4 millimole/g. The technical result of the invention is the increased quality of purification of the waste waters.

EFFECT: the invention ensures the increased quality of purification of the waste waters.

2 cl, 1 dwg, 1 tbl