CA1066438A - Removal of bod and nitrogenous pollutants from wastewaters - Google Patents
Removal of bod and nitrogenous pollutants from wastewatersInfo
- Publication number
- CA1066438A CA1066438A CA249,166A CA249166A CA1066438A CA 1066438 A CA1066438 A CA 1066438A CA 249166 A CA249166 A CA 249166A CA 1066438 A CA1066438 A CA 1066438A
- Authority
- CA
- Canada
- Prior art keywords
- stage
- oxic
- anoxic
- treating
- initial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 54
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 6
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 5
- 239000010802 sludge Substances 0.000 claims abstract description 95
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 81
- 239000001301 oxygen Substances 0.000 claims abstract description 81
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000011282 treatment Methods 0.000 claims abstract description 35
- 239000007787 solid Substances 0.000 claims abstract description 32
- 239000002028 Biomass Substances 0.000 claims abstract description 19
- 150000002823 nitrates Chemical class 0.000 claims abstract description 15
- 150000002826 nitrites Chemical class 0.000 claims abstract description 15
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 63
- 239000007788 liquid Substances 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 50
- 230000000694 effects Effects 0.000 claims description 18
- 244000005700 microbiome Species 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 230000000153 supplemental effect Effects 0.000 claims description 10
- 239000000543 intermediate Substances 0.000 claims description 7
- 230000001546 nitrifying effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 230000014509 gene expression Effects 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 230000000593 degrading effect Effects 0.000 claims description 2
- 229960005419 nitrogen Drugs 0.000 claims 4
- 150000001722 carbon compounds Chemical class 0.000 claims 3
- 230000002844 continuous effect Effects 0.000 claims 1
- 238000004090 dissolution Methods 0.000 claims 1
- 230000002829 reductive effect Effects 0.000 abstract description 7
- 150000003868 ammonium compounds Chemical class 0.000 abstract 1
- 244000062766 autotrophic organism Species 0.000 abstract 1
- 244000059217 heterotrophic organism Species 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 description 24
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- 239000002699 waste material Substances 0.000 description 12
- 239000012298 atmosphere Substances 0.000 description 8
- 239000010865 sewage Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000005276 aerator Methods 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 6
- 239000003575 carbonaceous material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 238000004891 communication Methods 0.000 description 5
- 230000006854 communication Effects 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 238000005273 aeration Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000035755 proliferation Effects 0.000 description 3
- 235000017281 sodium acetate Nutrition 0.000 description 3
- 239000001632 sodium acetate Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- LSHFIWNMHGCYRS-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[OH4+2] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[OH4+2] LSHFIWNMHGCYRS-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010841 municipal wastewater Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241000862991 Leptothrix <Bacteria> Species 0.000 description 1
- 241000858634 Leptothrix ochracea Species 0.000 description 1
- 241000605159 Nitrobacter Species 0.000 description 1
- 241000605122 Nitrosomonas Species 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- 241001478894 Sphaerotilus Species 0.000 description 1
- 241001478896 Sphaerotilus natans Species 0.000 description 1
- 101710097943 Viral-enhancing factor Proteins 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000010796 biological waste Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006790 cellular biosynthetic process Effects 0.000 description 1
- 230000019522 cellular metabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000037149 energy metabolism Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007102 metabolic function Effects 0.000 description 1
- 230000037353 metabolic pathway Effects 0.000 description 1
- -1 methanol Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000005789 organism growth Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001706 oxygenating effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/26—Activated sludge processes using pure oxygen or oxygen-rich gas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/902—Materials removed
- Y10S210/903—Nitrogenous
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Biological Treatment Of Waste Water (AREA)
- Water Treatment By Sorption (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/568,712 US3994802A (en) | 1975-04-16 | 1975-04-16 | Removal of BOD and nitrogenous pollutants from wastewaters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1066438A true CA1066438A (en) | 1979-11-13 |
Family
ID=24272416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA249,166A Expired CA1066438A (en) | 1975-04-16 | 1976-03-30 | Removal of bod and nitrogenous pollutants from wastewaters |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3994802A (show.php) |
| JP (1) | JPS5921680B2 (show.php) |
| BE (1) | BE840694A (show.php) |
| CA (1) | CA1066438A (show.php) |
| DE (1) | DE2616212A1 (show.php) |
| ES (1) | ES447056A1 (show.php) |
| FR (1) | FR2307768A1 (show.php) |
| GB (1) | GB1531534A (show.php) |
| IT (1) | IT1058129B (show.php) |
| SE (1) | SE428918B (show.php) |
| ZA (1) | ZA761916B (show.php) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321387A (zh) * | 2021-07-12 | 2021-08-31 | 深圳市润科环保应用技术研究有限公司 | 一种短流程农污一体化污水处理反应设备 |
Families Citing this family (87)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162153A (en) * | 1976-04-12 | 1979-07-24 | Air Products And Chemicals, Inc. | High nitrogen and phosphorous content biomass produced by treatment of a BOD-containing material |
| US4056465A (en) * | 1976-04-12 | 1977-11-01 | Air Products And Chemicals, Inc. | Production of non-bulking activated sludge |
| USRE32429E (en) * | 1976-04-12 | 1987-06-02 | Air Products And Chemicals, Inc. | Production of non-bulking activated sludge |
| US4460471A (en) * | 1977-11-04 | 1984-07-17 | Reid John H | Flow-control process for an oxidation ditch |
| US4443338A (en) * | 1977-11-04 | 1984-04-17 | Reid John H | Conversion of plug flow and complete mix aeration basins to barrier oxidation ditches |
| AU523598B2 (en) * | 1977-11-04 | 1982-08-05 | John Hager Reid | Aeration ditch |
| US4278547A (en) * | 1977-11-04 | 1981-07-14 | Reid John H | Conservation of momentum in a barrier oxidation ditch |
| US4210528A (en) * | 1977-11-11 | 1980-07-01 | Thetford Corporation | Closed loop waste treatment and water recycling toilet system |
| US4173531A (en) * | 1977-11-23 | 1979-11-06 | Union Carbide Corporation | Nitrification-denitrification of wastewater |
| JPS5531461A (en) * | 1978-08-29 | 1980-03-05 | Niigata Eng Co Ltd | Denitrification of organic nitrogenous waste water |
| US4279753A (en) * | 1979-03-19 | 1981-07-21 | Arco Environmental Company | Wastewater treatment system including multiple stages of alternate aerobic-anerobic bioreactors in series |
| DE2918950A1 (de) * | 1979-05-10 | 1980-11-20 | Linde Ag | Verfahren und vorrichtung zur nitrifikation und denitrifikation von abwaessern |
| DE2936884A1 (de) * | 1979-09-12 | 1981-03-19 | Schreiber, August, Dr.-Ing., 3000 Hannover | Verfahren und einrichtung zur abwasserreinigung mittels belebtschlamm |
| DE3002604A1 (de) * | 1980-01-25 | 1981-07-30 | Basf Ag, 6700 Ludwigshafen | Verfahren und vorrichtung zur biologischen reinigung von abwasser |
| JPS5815038B2 (ja) * | 1980-02-21 | 1983-03-23 | 株式会社 西原環境衛生研究所 | 汚水処理装置 |
| ES8201507A1 (es) * | 1980-09-23 | 1981-12-16 | Pineda Felipe Sa | Procedimiento e instalacion para la depuracion de residuos contaminantes |
| DE3045158A1 (de) * | 1980-12-01 | 1982-07-01 | Linde Ag, 6200 Wiesbaden | Verfahren und vorrichtung zur biologischen reinigung von abwasser |
| US4537682A (en) * | 1982-01-29 | 1985-08-27 | Environmental Research & Technology | Activated sludge wastewater treating process |
| DE3206527A1 (de) * | 1982-02-24 | 1983-09-01 | Linde Ag, 6200 Wiesbaden | Verfahren und vorrichtung zur biologischen nitrifikation von abwasser |
| EP0099421B1 (en) * | 1982-07-21 | 1986-09-17 | Air Products And Chemicals, Inc. | Biological wastewater treating system |
| US4522722A (en) * | 1983-03-07 | 1985-06-11 | Air Products And Chemicals, Inc. | Nitrogen and phosphorus removal from wastewater |
| US4488967A (en) * | 1983-03-07 | 1984-12-18 | Air Products And Chemicals, Inc. | Treatment of wastewater containing phosphorus compounds |
| GB2155003B (en) * | 1984-01-20 | 1987-12-31 | Nishihara Env San Res Co Ltd | Activated sludge method |
| US4552663A (en) * | 1984-07-31 | 1985-11-12 | Air Products And Chemicals, Inc. | Process for the removal of ammoniacal nitrogen in the BOD sorption zone of a wastewater treatment plant |
| US4720344A (en) * | 1985-04-18 | 1988-01-19 | Ganczarczyk Jerzy J | Nitrification process in waste water treatment |
| SE456500B (sv) * | 1985-09-16 | 1988-10-10 | Boliden Ab | Forfarande for rening av vatten for eliminering av kveve |
| DE3545020A1 (de) * | 1985-09-28 | 1987-06-25 | Eppler Alwin | Verfahren zur biologischen denitrifizierung von wasser und vorrichtung zur durchfuehrung dieses verfahrens |
| US4839052A (en) * | 1987-03-10 | 1989-06-13 | Council For Scientific And Industrial Research | Biological treatment of water |
| WO1988008410A1 (en) * | 1987-04-21 | 1988-11-03 | Hampton Roads Sanitation District | High-rate biological waste water treatment process using activated sludge recycle |
| AU620402B2 (en) * | 1988-06-02 | 1992-02-20 | Orange Water And Sewerage Authority | Process for treating wastewater |
| US4874519A (en) * | 1988-06-02 | 1989-10-17 | Orange Water & Sewer Authority | Process for treating wastewater |
| US4961854A (en) * | 1988-06-30 | 1990-10-09 | Envirex Inc. | Activated sludge wastewater treatment process |
| US4975197A (en) * | 1989-05-03 | 1990-12-04 | Envirex Inc. | Orbal wastewater treatment process |
| FR2667057B1 (fr) * | 1990-09-25 | 1993-07-09 | Degremont | Reacteur perfectionne pour le traitement biologique des eaux residuaires. |
| US5332502A (en) * | 1990-11-02 | 1994-07-26 | The Commonwealth Industrial Gases Ltd. | Wastewater treatment |
| GB9118560D0 (en) * | 1991-08-30 | 1991-10-16 | Pirtferm Ltd | Process for degrading organic matter |
| US5160043A (en) * | 1991-09-09 | 1992-11-03 | I. Kruger, Inc. | Method of exhausting dissolved oxygen in a nitrogen removal wastewater treatment process |
| US5213681A (en) * | 1991-09-09 | 1993-05-25 | T. Kruger, Inc. | Method for biologically removing nitrogen from wastewater |
| US5288405A (en) * | 1993-01-27 | 1994-02-22 | Piedmont Olsen Hensley, Inc. | Wastewater treatment with enhanced biological phosphorus removal and related purification processes |
| US5490934A (en) * | 1993-08-30 | 1996-02-13 | Lawrence A. Schmid | Method of biological denitrification |
| US5480548A (en) * | 1993-12-28 | 1996-01-02 | Ch2M Hill, Inc. | Wastewater biological phosphorus removal process |
| US5783071A (en) * | 1994-01-11 | 1998-07-21 | Delta Environmental Products, Inc. | Apparatus for treating wastewater |
| US5714061A (en) * | 1994-01-11 | 1998-02-03 | Delta Environmental Products, Inc. | Apparatus for treating wastewater |
| DE4409435C2 (de) * | 1994-03-19 | 1995-06-14 | Ott Peter | Verfahren zur simultanen biologischen Phosphor- und Stickstoffelimination aus Abwasser |
| PL188698B1 (pl) * | 1995-06-22 | 2005-03-31 | Bisasco Pty Ltd | Sposób obróbki materiału odpadowego i urządzenie do obróbki materiału odpadowego |
| US5876603A (en) * | 1995-08-10 | 1999-03-02 | Hitachi Plant Engineering & Construction Co., Ltd. | Method of biologically removing nitrogen and system therefor |
| US5766454A (en) * | 1996-08-26 | 1998-06-16 | Delta Environmental Products, Inc. | Home wastewater treatment and denitrification system |
| DE19644080A1 (de) * | 1996-10-31 | 1998-05-07 | Messer Griesheim Gmbh | Verfahren und Vorrichtung zur biologischen Abwasserreinigung |
| EP0849230A1 (en) * | 1996-12-17 | 1998-06-24 | Krüger, Inc. | Dual-stage biological process for removing nitrogen from wastewater |
| EP1030821B1 (de) * | 1997-10-30 | 2001-08-22 | Süd-Chemie Ag | Verfahren zur denitrifikation von abwässern |
| CA2322696C (en) * | 1998-03-04 | 2009-08-11 | Mikkel G. Mandt | Surge anoxic mix sequencing batch reactor systems |
| IL127174A0 (en) | 1998-11-20 | 1999-09-22 | Almog Projects Ltd | Sewage treatment facility and method |
| US6217761B1 (en) | 1999-07-29 | 2001-04-17 | Delta Environmental Products, Inc. | Wastewater treatment system preventing the build up of solids beneath the clarifier opening |
| JP4082859B2 (ja) * | 2000-11-07 | 2008-04-30 | シャープ株式会社 | 中和装置 |
| US6592762B2 (en) | 2001-08-29 | 2003-07-15 | United States Filter Corporation | Process for treating BOD-containing wastewater |
| WO2003042118A1 (en) * | 2001-11-12 | 2003-05-22 | Shunsuke Takada | Method and device for purifying water |
| US6712970B1 (en) * | 2002-01-11 | 2004-03-30 | Enviroquip, Inc. | Sewage treatment process with phosphorus removal |
| US6692642B2 (en) * | 2002-04-30 | 2004-02-17 | International Waste Management Systems | Organic slurry treatment process |
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-
1975
- 1975-04-16 US US05/568,712 patent/US3994802A/en not_active Expired - Lifetime
-
1976
- 1976-02-05 GB GB458676A patent/GB1531534A/en not_active Expired
- 1976-03-30 CA CA249,166A patent/CA1066438A/en not_active Expired
- 1976-03-30 ZA ZA761916A patent/ZA761916B/xx unknown
- 1976-04-02 SE SE7603963A patent/SE428918B/xx not_active IP Right Cessation
- 1976-04-13 DE DE19762616212 patent/DE2616212A1/de not_active Ceased
- 1976-04-13 FR FR7610776A patent/FR2307768A1/fr active Granted
- 1976-04-13 BE BE166112A patent/BE840694A/xx not_active IP Right Cessation
- 1976-04-14 ES ES447056A patent/ES447056A1/es not_active Expired
- 1976-04-15 JP JP51043056A patent/JPS5921680B2/ja not_active Expired
- 1976-04-15 IT IT4904376A patent/IT1058129B/it active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321387A (zh) * | 2021-07-12 | 2021-08-31 | 深圳市润科环保应用技术研究有限公司 | 一种短流程农污一体化污水处理反应设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2616212A1 (de) | 1976-10-21 |
| GB1531534A (en) | 1978-11-08 |
| FR2307768A1 (fr) | 1976-11-12 |
| US3994802A (en) | 1976-11-30 |
| JPS5921680B2 (ja) | 1984-05-21 |
| BE840694A (fr) | 1976-08-02 |
| SE428918B (sv) | 1983-08-01 |
| ES447056A1 (es) | 1977-10-01 |
| JPS51128157A (en) | 1976-11-08 |
| SE7603963L (sv) | 1976-10-17 |
| IT1058129B (it) | 1982-04-10 |
| ZA761916B (en) | 1977-03-30 |
| FR2307768B1 (show.php) | 1981-11-27 |
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