KR840000437A - Method of Biological Wastewater Treatment - Google Patents

Abstract

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Description

Method of Biological Wastewater Treatment

Since this is an open matter, no full text was included.

A schematic and schematic side view that simplifies the process steps of the present invention.

Claims (12)

In the operation of the activated sludge process: a) active biota and generates a mixed liquid by mixing the BoD--containing waste water initially to be introduced into sorption zone BoD: The mixture, in the oxidation of less than 5% of the total area and the sorption BoD ₅ by oxygen or an oxidizing agent Process under selected conditions, such as sorption of at least 25% of soluble BoD ₅ by biota: b) a continuous oxidation zone for oxidizing the BoD contained in the mixed solution, containing at least a portion of the BoD that is sorted into the biomass, a controlled aeration condition in which at least 30% of the total introduced BoD ₅ is oxidized, less than 1 ppm The condition containing the said hardening zone containing the dissolved oxygen content of: c) precipitating the oxidized mixed solution to separate the more dense supernatant containing the biomass; d) a rehabilitation ring for providing at least a portion of the sludge to be harvested to the active biomass of the initial BoD sorption zone. The method of claim 1 wherein at least 50% of the soluble BoD ₅ of the introduced wastewater is sorbed in the sorption zone by the biota. The method of claim 1 wherein the BoD sorption zone consists of a series of at least two hydraulic continuous stages. The method of claim 1 wherein the coral zone consists of a series of at least two hydraulic continuous stages. The method of claim 1, wherein the initial BoD sorption zone is maintained in an anaerobic state where less than 2% of the total BoD ₅ introduced is oxidized. The method of claim 1 wherein the influent wastewater contains a phosphate number and the excess of the phosphate value is removed from the solution in the oxidation zone and stored in the biomass as a nitrate. The method of claim 1, wherein the inflow rate of the influent wastewater is related to the total biomass of the sorption zone, and the oxidation zone is prepared to exceed 0.3 of the overall F / M, where F is generated by the influent wastewater per day. A manufacturing process in which the total weight of BoD ₅ and M is the weight of the biomass, the volatile suspended solids contained in the BoD sorption zone and oxidation zone. The process according to claim 1, wherein the process inserts an oxygen depletion zone between the BOD sorption zone and the oxidation zone, and the inflow rate of the introduced wastewater is associated with the total biomass contained in the B BOD sorption zone oxygen deficiency zone and the oxidation zone. And a total F / M of more than 0.3, wherein F is the weight of the total BOD ₅ generated by the daily inflow of wastewater and M is the volatile suspended solids contained in the BOD sorption zone, oxygen depletion zone and oxidation zone. A manufacturing process that is the weight of a living organism. The BOD sorption zone is controlled to produce a F / M ratio of 10 or less, wherein F is the total BOD ₅ generated by the wastewater entering the day and M is the volatile suspension contained in the BOD sorption zone. The weight of a biomass that is a solid. The method of claim 9, wherein the F / M ratio in the BOD sorption zone is maintained at 5 or less. The method of claim 1 wherein the BOD sorption zone is operated with less than 1% of the total introduced BOD ₅ oxidized by oxygen or oxidant. The process according to claim 1, wherein at least a portion of the biomass of the process is obtained by seeding the biomass obtained by the process that has achieved steady state operation under the condition of claim 1. ※ Note: The disclosure is based on the initial application.