INSTALLATION OF SEWAGE BIOLOGICAL PURIFICATION Russian patent published in 2005 - IPC

FIELD: sewage biological purification equipment.

SUBSTANCE: the invention is pertaining to installations of household and similar industrial sewage biological purification and may be used in a municipal economy and at industrial enterprises. Installation of sewage biological purification consists of: a tank divided by partitions into steps, sections, chambers of steps of bioreactors; systems for sewage feeding, distributing and withdrawing; a system of recirculation of sludge mixtures; a system of air supply; thin-layer pulsed silt master units, a filamentary nozzle for retaining of hydrocoles; communications for sewage settlings separation from the sewage biological purification installation. The tank is made three-staged with the different size steps. The second stage is twice as large as the first one, and the third stage by one third exceeds the first step. The first and the second steps are supplied with chambers of the thin-layer pulsed silt master units. The dimensions of a thin-layer pulsed silt master unit in the first step are in one and a half times less than the similar units in the second step. In essence the first step is made as an ideal mixer, and the second and the third steps - largely as displacers. The nozzle is located in the second and third steps. Communications for withdrawal of the sewage settlings beyond the limits of the installation are placed exclusively in the third step. The technical effect is an increase of efficiency of removal from the sewage of phosphorus and nitrogen, a multiple decrease of the specific volume of tanks, a decrease of power input and simplification of operation.

EFFECT: the invention ensures increased efficiency of removal from the sewage of phosphorus and nitrogen, a multiple decrease of the specific volume of tanks, decreased power input and simplification of operation.

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