A sewage treatment apparatus comprises a first stage equipment for treating sewage feed to obtain a first effluent and a second stage equipment for treating the first effluent to obtain a second effluent. The second stage equipment comprises a mixer (VI) for mixing the first effluent and a flocculat
A sewage treatment apparatus comprises a first stage equipment for treating sewage feed to obtain a first effluent and a second stage equipment for treating the first effluent to obtain a second effluent. The second stage equipment comprises a mixer (VI) for mixing the first effluent and a flocculation agent to obtain the first effluent containing the flocculation agent and a flocculation-clarification equipment (VII) comprises a first flocculation reaction chamber (A), into which the first effluent containing the flocculation agent is entered and subjected to flocculation reaction to form a mixture of water and dreg; a first separation chamber (C), into which the mixture of water and dreg from the first flocculation reaction chamber (A) is entered and separated to obtain a first part of the second effluent and a first dreg; and a second separation chamber (D), into which part of the first dreg is entered and separated to obtain a second part of the second effluent and a second dreg.
대표청구항▼
1. A sewage treatment apparatus, comprising: a primary stage for treating a sewage feed to obtain a first water effluent, anda secondary stage for treating the first water effluent to obtain a second water effluent, wherein the secondary stage comprises a mixing device for mixing the first water eff
1. A sewage treatment apparatus, comprising: a primary stage for treating a sewage feed to obtain a first water effluent, anda secondary stage for treating the first water effluent to obtain a second water effluent, wherein the secondary stage comprises a mixing device for mixing the first water effluent with a flocculation agent to obtain the first water effluent containing flocculation agent, and a flocculation clarification device,the flocculation clarification device comprises a flocculation reaction chamber allowing the entrance and flocculation reaction of the first water effluent containing flocculation agent to form a mixed liquor of dreg and water, a first separating chamber allowing the entrance and separation of the mixed liquor of dreg and water from the flocculation reaction chamber to obtain a first part of the second water effluent and a first dreg, and a second separation chamber allowing the entrance and separation of a first part of the first dreg to obtain a second part of the second water effluent and a second dreg,wherein the flocculation reaction chamber comprises: a first flocculation reaction chamber and a second flocculation reaction chamber, wherein the first flocculation reaction chamber is disposed to allow the entrance and flocculation reaction of the raw sewage containing flocculation agent and the first part of the mixed liquor of the second flocculation reaction chamber to form the mixed liquor of the first flocculation reaction chamber, the second flocculation reaction chamber is disposed to allow the entrance and flocculation reaction of the mixed liquor of the first flocculation reaction chamber and a second part of the first dreg to form the mixed liquor of the second flocculation reaction chamber, and the second part of the mixed liquor of the second flocculation reaction chamber as a mixed liquor of dreg and water enters into the first separation chamber,wherein the first flocculation reaction chamber is a rotational flow generator comprising a tangential inlet that allows the sewage containing flocculation agent to enter and to form a rotational flow, an opening that allows the first part of the mixed liquor of the second flocculation reaction chamber to enter, and a reaction chamber in which the flocculation reaction occurs, wherein the tangential inlet and the opening are disposed to allow the sewage containing flocculation agent and the first part of the mixed liquor of the second flocculation reaction chamber to mix in the rotational flow generator. 2. The sewage treatment apparatus according to claim 1, wherein the flocculation clarification device further comprises: one or more first dreg discharging channels fluidly connecting the first separation chamber and the second separation chamber to allow the entrance of a first part of the first dreg into the second separation chamber, andone or more first dreg returning channels fluidly connecting the first separation chamber and the flocculation reaction chamber to allow the entrance of a second part of the first dreg into the flocculation reaction chamber,wherein in the first separation chamber, the inlet of the first dreg discharging channels is at a position higher than the inlet of the first dreg returning channels. 3. The sewage treatment apparatus according to claim 2, wherein the second separation chamber has one or more channels for discharging a second part of the second water effluent so as to allow the second part of the second water effluent to be discharged from the second separation chamber, the relative position between the inlet of the channels for discharging the second part of the second water effluent and the outlet of the first dreg discharging channels in the second separation chamber is disposed so that the suspended solids in the first part of the first dreg are subjected to sufficient sedimentation to obtain the second part of the second water effluent that substantially does not contain suspended solids. 4. The sewage treatment apparatus according to claim 2, wherein the first dreg returning channels allow the mixed liquor of dreg and water in the flocculation reaction chamber to enter into the first separation chamber. 5. The sewage treatment apparatus according to claim 1, wherein the first separation chamber and the second separation chamber are disposed to allow the first part of the first dreg to enter into the second separation chamber under gravity effect. 6. The sewage treatment apparatus according to claim 1, a volume of the second separation chamber is about equal to or greater than the volume of the first separation chamber. 7. The sewage treatment apparatus according to claim 1, wherein the first flocculation reaction chamber is a water ejector, wherein the water ejector comprises a nozzle and a throat to allow the sewage containing flocculation agent and the first part of the mixed liquor of the second flocculation reaction chamber to enter and to be mixed, and a reaction chamber to allow flocculation reaction. 8. The sewage treatment apparatus according to claim 1, wherein one or more kinds of grid and/or packing material are set in the first flocculation reaction chamber and/or the second flocculation reaction chamber. 9. The sewage treatment apparatus according to claim 1, one or more guide vanes are set in the first flocculation reaction chamber and/or the second flocculation reaction chamber. 10. The sewage treatment apparatus according to claim 1, wherein the second separation chamber is disposed to locate below the first separation chamber and the second flocculation reaction chamber. 11. The sewage treatment apparatus according to claim 1, wherein one or more inclined pipe zones and/or inclined plate zones are set in the first separation chamber and/or the second separation chamber. 12. The sewage treatment apparatus according to claim 1, wherein the primary stage is a device capable of performing sewage biotreatment of the sewage feed in a manner according to Wuhrmann process, A/O process, Bardenpho process, Phoredox process, A2/O process, reversed A2/O process, UCT process, MUCT process, VIP process, OWASA process, JHB process, TNCU process, Dephanox process, BCFS process, MSBR process, SBR process, AB process, oxidation ditch process, biomembrane process, moving bed process or a combination thereof. 13. The sewage treatment apparatus according to claim 1, wherein the primary stage comprises a pretreatment section and a treatment section, the pretreatment section comprises a first aeration basin and a first sedimentation basin, wherein the first aeration basin is disposed to allow the sewage feed mixed with a first sludge from the first sedimentation basin, and optionally a second sludge from the treatment section and optionally the second dreg from the secondary stage at a first end of the first aeration basin to obtain a first mixed liquor, and allow the aeration of the first mixed liquor to obtain a second mixed liquor at a second end of the first aeration basin; the first sedimentation basin is disposed to allow the separation of the second mixed liquor from the first aeration basin to obtain a supernatant and a first sludge, and allow at least part of the first sludge return to the first end of the first aeration basin to have a sludge age of greater than 50 days; and the treatment section is disposed to allow the sewage biotreatment of the supernatant from the first sedimentation basin to obtain the first water effluent and a second sludge. 14. The sewage treatment apparatus according to claim 13, wherein the first aeration basin is disposed to have an aeration time of 0.1 to 4 h; and the first sedimentation basin is disposed to have a sedimentation time of 0.8 to 6 h. 15. The sewage treatment apparatus according to claim 13, wherein the first aeration basin and the first sedimentation basin are disposed so that the ratio of the aeration time to the sedimentation time is 1:0.5 to 1:6. 16. The sewage treatment apparatus according to claim 13, wherein the treatment section is a device capable of performing sewage biotreatment of the sewage feed in a manner according to Wuhrmann process, A/O process, Bardenpho process, Phoredox process, A2/O process, reversed A2/O process, UCT process, MUCT process, VIP process, OWASA process, JHB process, TNCU process, Dephanox process, BCFS process, MSBR process, SBR process, AB process, oxidation ditch process, biomembrane process, moving bed process or a combination thereof. 17. The sewage treatment apparatus according to claim 13, wherein the treatment section comprises a second aeration basin and a second sedimentation basin, the second aeration basin is disposed to allow the aeration treatment of the supernatant from the first sedimentation to obtain a third mixed liquor, and the second sedimentation basin is disposed to allow the sedimentation separation of the third mixed liquor from the second aeration basin to obtain the first water effluent and the second sludge. 18. The sewage treatment apparatus according to claim 17, wherein the treatment section further comprises a biologic selection zone, the biologic selection zone is disposed to allow the supernatant form the first sedimentation basin mix with the third mixed liquor from the second aeration basin and/or the second mixed liquor from the second sedimentation basin and enter the second aeration basin. 19. The sewage treatment apparatus according to claim 18, wherein the biologic selection zone is disposed so that the residence time of the mixture of the supernatant and the third mixed liquor and/or the second sludge in the biologic selection zone is 0.1 to 2 h. 20. The sewage treatment apparatus according to claim 1, wherein the first stage is disposed so that the water level of the sewage feed inlet of the first stage is located at the highest point of the whole first stage, and the water level of the first water effluent outlet of the first stage is located at the lowest point of the whole first stage, so that the sewage feed can flow from the sewage feed inlet to the first water effluent outlet under the effect of gravity.
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Kim,Kyung Jin, Apparatus having rotary activatedcontractor for purifying sewage and wastewater and method using the same.
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