Process for aerobic treatment of waste water
AssigneePaques B.V.
InventorsLeonard Hubertus Alphonsus Habets, Wilhelmus Johannes Bernardus Maria Driessen
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Abstract
A process is described for the aerobic treatment of effluent in a reactor of the UASB type, into the bottom of which the effluent to be treated is fed and, at the same time, oxygen is fed in an amount such that the growth of a facultative and an aerobic biomass is promoted. An apparatus for the aerobic treatment of effluent is also described, which apparatus consists of a UASB rector, distributors for supplying liquid and aeration means being located at the bottom of the reactor and means for integrated settling of biomass and gas collection being located at the top of the reactor. The apparatus can also be an integrated anaerobic/aerobic reactor.
Claims12
A process for the aerobic treatment of waste water in an aerated reactor, said reactor being an Upflow Anaerobic Sludge Blanket type reactor having a bottom and a top, the process comprising:
- feeding and distributing the waste water to be treated to the bottom of the reactor;
- moving the waste water upwards through a layer of biomass sludge;
- collecting gas from above the layer of biomass sludge;
- settling biomass sludge;
- feeding oxygen-containing gas into the bottom of the reactor in an amount such that the growth of a facultative and an aerobic biomass is promoted;
- and
- discharging treated waste water from the top of the reactor.
An apparatus for integrated anaerobic and aerobic treatment of waste water, consisting of an Upflow Anaerobic Sludge Blanket-type reactor having a bottom and a top, and comprising:
- distributor means located at the bottom for supplying waste water to the reactor;
- first gas collection means positioned above the distributor means for collecting anaerobic gases;
- aeration means located above said first gas collection means for supplying oxygen;
- second means located above said aeration means for separating biomass and collecting gases;
- and
- means for withdrawing treated water from the top of the reactor.
An apparatus for integrated anaerobic and aerobic treatment of waste water, consisting of an Upflow Anaerobic Sludge Blanket-type reactor having a bottom and a top, and comprising:
- distributor means located at the bottom for supplying waste water to the reactor;
- gas collection means positioned above the distributor means for collecting anaerobic gases;
- aeration means located above said first gas collection means for supplying oxygen;
- packing material located above said aeration means for supporting aerobic bacteria;
- and
- means for withdrawing treated water from the top of the reactor.
Dependencies are inferred from the claim text.