Biological-chemical treatment of liquid organic wastewater
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C02F-009/00
C02F-001/72
C02F-001/78
C02F-003/12
C02F-003/30
출원번호
US-0757030
(2013-02-01)
등록번호
US-9255022
(2016-02-09)
발명자
/ 주소
Mehta, Sunil
Chowdhury, Nabin
Ubaldi, Richard
Schilling, Barbara
Lau, Antonio
Heiniger, Bruno
출원인 / 주소
Infilco Degremont, Inc
대리인 / 주소
Landmark Intellectual Property Law, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
The invention is directed to systems and methods of biological and chemical treatment of wastewater comprising organic nitrogen compounds. Systems may include: an aerobic reactor, a first separation module for separating liquid and solid components of the wastewater; an oxidation module for removing
The invention is directed to systems and methods of biological and chemical treatment of wastewater comprising organic nitrogen compounds. Systems may include: an aerobic reactor, a first separation module for separating liquid and solid components of the wastewater; an oxidation module for removing organic materials from the wastewater; and a post-anoxic reactor for denitrifying at least a portion of the wastewater. Systems may include a second separation module and various feedback recycle lines between the components. Methods may include: degrading by the aerobic reactor more than 95% of organic compounds to ammonia, oxidizing by the oxidation module at least a portion of the ammonia to nitrates, and degrading by the post-anoxic reactor at least a portion of the nitrates to nitrogen gas and water. Systems and methods may reduce total organic carbon of the wastewater by more than 90%, and total nitrogen of the wastewater by more than 90%.
대표청구항▼
1. A biological and chemical treatment system for treating wastewater comprising liquid organic wastes and toxic chemicals generated from the production of thin film transistor liquid crystal displays, the wastewater comprising tetra-methyl ammonium hydroxide ((CH3)4NOH, “TMAH”), the system comprisi
1. A biological and chemical treatment system for treating wastewater comprising liquid organic wastes and toxic chemicals generated from the production of thin film transistor liquid crystal displays, the wastewater comprising tetra-methyl ammonium hydroxide ((CH3)4NOH, “TMAH”), the system comprising: an aerobic reactor, receiving an influent comprising wastewater to be treated, configured to cause the degradation of at least 90% of the TMAH in the influent to NH4—N (“ammonia”);a first separation module in series with the aerobic reactor, the first separation module receiving the output of the aerobic reactor as an input, the first separation module separating liquid and solid components of the wastewater;an oxidation module in series with the first separation module, the oxidation module receiving the output of the first separation module as an input, the oxidation module nitrifying any free ammonia and removing organic materials from the wastewater using an advanced oxidation process system that utilizes inputs of ozone (O3) and hydrogen peroxide (H2O2) to oxidize the wastewater received from the first separation module; anda post-anoxic reactor in series with the oxidation module, the post-anoxic reactor receiving the output of the oxidation module as an input, the post-anoxic reactor denitrifying at least a portion of the wastewater, and outputting an effluent;wherein the effluent has a reduction of total organic carbon (“TOC”) and total nitrogen (“TN”) of more of more than 90% compared with the influent. 2. The system of claim 1, wherein the first separation module is a clarifier, in which sedimentation of sludge occurs. 3. The system of claim 1, wherein the first separation module is a membrane bioreactor that utilizes microfiltration or ultrafiltration membranes to separate the liquid and solid components. 4. The system of claim 1, wherein the first separation module outputs activated sludge, and wherein the influent further comprises activated sludge from the first separation module. 5. The system of claim 1, wherein the oxidation module comprises an ammonia stripper. 6. The system of claim 1, further comprising: a second separation module in series with the post-anoxic reactor, the second separation module receiving the output of the post-anoxic reactor as an input, the second separation module separating liquid and solid components of the wastewater. 7. The system of claim 6, wherein the second separation module is a clarifier, in which sedimentation of sludge occurs. 8. The system of claim 6, wherein the second separation module is a membrane bioreactor that utilizes microfiltration or ultrafiltration membranes to separate the liquid and solid components. 9. The system of claim 6, wherein the second separation module outputs activated sludge, and wherein at least a portion of the activated sludge from the second separation module is provided as an input to the post-anoxic reactor. 10. The system of claim 1, wherein the input to the oxidation module comprises ammonia, and wherein the oxidation module causes the oxidation of at least some of the ammonia to NO3—N (“nitrates”). 11. The system of claim 10, wherein the oxidation module causes a substantially complete oxidation of the ammonia to nitrates. 12. The system of claim 10, wherein the input to the post-anoxic reactor comprises nitrates, and wherein the post-anoxic reactor causes the degradation of at least some of the nitrates to N2 (“nitrogen gas”) and H2O (“water”). 13. The system of claim 12, wherein the post-anoxic reactor causes a substantially complete degradation of nitrates to nitrogen gas and water. 14. The system of claim 1, wherein the effluent has a reduction in the TOC of the wastewater of more than 95%. 15. The system of claim 1, wherein the effluent has a reduction in the TN of the wastewater of more than 95%. 16. A biological and chemical treatment method for treating wastewater comprising liquid organic wastes and toxic chemicals generated from the production of thin film transistor liquid crystal displays, the wastewater comprising tetra-methyl ammonium hydroxide ((CH3)4NOH, “TMAH”), comprising: receiving an influent comprising wastewater to be treated in an aerobic reactor;biologically treating the influent to convert and degrade the any nitrogen compounds in the organic wastes, and causing more than 99% of the TMAH to degrade ammonia;receiving at a first separation module from the aerobic reactor an output of the aerobic reactor, the first separation module comprising a membrane bioreactor that separates the liquid and solid components of the wastewater by microfiltration or ultrafiltration;separating any solid components of the wastewater by the first separation module;receiving at an advanced oxidation process system from the first separation module an output of the first separation module, the advanced oxidation process system removing organic materials by treating the output of the first separation module with ozone (O3), and hydrogen peroxide (H2O2), the advanced oxidation process system causes a substantially complete oxidation of ammonia to NO3—N (“nitrates”);removing organic materials from the wastewater by the oxidation module;receiving at a post-anoxic reactor from the oxidation module an output of the oxidation module; anddenitrifying at least a portion of the wastewater by the post-anoxic reactor, and outputting an effluent,wherein the effluent has a reduction of total organic carbon (“TOC”) and total nitrogen (“TN”) of more of more than 90% compared with the influent. 17. The method of claim 16, further comprising: outputting by the first separation module activated sludge; andadding at least a portion of the activated sludge to the influent. 18. The method of claim 16, wherein the organic materials are removed from the wastewater by ammonia stripping. 19. The method of claim 16, further comprising: receiving at a second separation module from the post-anoxic reactor an output of the post-anoxic reactor;separating liquid and solid components of the wastewater by the second separation module. 20. The method of claim 19, wherein the second separation module is a clarifier, in which sedimentation of sludge occurs. 21. The method of claim 19, further comprising: outputting by the second separation module activated sludge; andadding at least a portion of the activated sludge from the second separation module to the input of the post-anoxic reactor. 22. The method of claim 16, wherein the post-anoxic reactor receives nitrates and degrades of at least some of the nitrates to N2 (“nitrogen gas”) and H2O (“water”). 23. The method of claim 22, wherein the post-anoxic reactor substantially completely degrades the nitrates to nitrogen gas and water. 24. The method of claim 16, causing a reduction in the TOC of the wastewater of more than 95%. 25. The method of claim 16, causing a reduction in the TN of the wastewater of more than 95%.
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이 특허에 인용된 특허 (10)
Alfredo J. Teran ; John R. Derrick, Jr. ; Nidal A. Samad ; W. Todd Willoughby ; Richard G. Wood, Aerobic treatment of liquids to remove nutrients and control odors.
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