CA1115432A - Aerobic/anaerobic sludge digestion process - Google Patents
Aerobic/anaerobic sludge digestion processInfo
- Publication number
- CA1115432A CA1115432A CA312,460A CA312460A CA1115432A CA 1115432 A CA1115432 A CA 1115432A CA 312460 A CA312460 A CA 312460A CA 1115432 A CA1115432 A CA 1115432A
- Authority
- CA
- Canada
- Prior art keywords
- sludge
- digestion
- zone
- digestion zone
- gas
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 658
- 230000029087 digestion Effects 0.000 title claims abstract description 558
- 238000000034 method Methods 0.000 title claims abstract description 171
- 230000008569 process Effects 0.000 title claims abstract description 164
- 239000007787 solid Substances 0.000 claims abstract description 168
- 239000007789 gas Substances 0.000 claims description 220
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 184
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 167
- 239000001301 oxygen Substances 0.000 claims description 166
- 229910052760 oxygen Inorganic materials 0.000 claims description 166
- 238000005273 aeration Methods 0.000 claims description 129
- 230000014759 maintenance of location Effects 0.000 claims description 96
- 238000011282 treatment Methods 0.000 claims description 57
- 238000002156 mixing Methods 0.000 claims description 31
- 239000002351 wastewater Substances 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 19
- 230000002829 reductive effect Effects 0.000 claims description 19
- 230000020477 pH reduction Effects 0.000 claims description 16
- 238000000855 fermentation Methods 0.000 claims description 15
- 230000004151 fermentation Effects 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 15
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 9
- 229910001882 dioxygen Inorganic materials 0.000 claims description 9
- 230000006872 improvement Effects 0.000 claims description 7
- 230000003134 recirculating effect Effects 0.000 claims description 7
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims 17
- 238000006722 reduction reaction Methods 0.000 description 25
- 230000009467 reduction Effects 0.000 description 24
- 230000006641 stabilisation Effects 0.000 description 24
- 238000011105 stabilization Methods 0.000 description 24
- 238000010438 heat treatment Methods 0.000 description 23
- 239000003570 air Substances 0.000 description 22
- 238000004519 manufacturing process Methods 0.000 description 15
- 238000004065 wastewater treatment Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 241000894006 Bacteria Species 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 230000008901 benefit Effects 0.000 description 10
- 244000005700 microbiome Species 0.000 description 10
- 238000006213 oxygenation reaction Methods 0.000 description 10
- 238000012546 transfer Methods 0.000 description 10
- 239000002699 waste material Substances 0.000 description 10
- 238000013019 agitation Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 238000004062 sedimentation Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 230000036961 partial effect Effects 0.000 description 7
- 238000005842 biochemical reaction Methods 0.000 description 6
- 230000001079 digestive effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 239000002562 thickening agent Substances 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 238000005063 solubilization Methods 0.000 description 5
- 230000007928 solubilization Effects 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 230000008719 thickening Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 238000006065 biodegradation reaction Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 238000009928 pasteurization Methods 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 230000035508 accumulation Effects 0.000 description 3
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- 230000002378 acidificating effect Effects 0.000 description 3
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- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 231100000206 health hazard Toxicity 0.000 description 3
- 239000013067 intermediate product Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 244000052769 pathogen Species 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 230000004071 biological effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000006037 cell lysis Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
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- 230000003247 decreasing effect Effects 0.000 description 2
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- 230000003413 degradative effect Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241001327631 Meara Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000011021 bench scale process Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 230000004098 cellular respiration Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- SYHGEUNFJIGTRX-UHFFFAOYSA-N methylenedioxypyrovalerone Chemical compound C=1C=C2OCOC2=CC=1C(=O)C(CCC)N1CCCC1 SYHGEUNFJIGTRX-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000013348 organic food Nutrition 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000002311 subsequent effect Effects 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000004069 wastewater sedimentation Methods 0.000 description 1
- 239000003403 water pollutant Substances 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
-
- 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
- C02F3/30—Aerobic and anaerobic processes
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84190277A | 1977-10-13 | 1977-10-13 | |
| US841,902 | 1977-10-13 | ||
| US92809978A | 1978-07-26 | 1978-07-26 | |
| US928,099 | 1978-07-26 | ||
| KR1019780003213A KR830001900B1 (ko) | 1978-10-25 | 1978-10-25 | 호기성 및 혐기성 슬러지 분해방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1115432A true CA1115432A (en) | 1981-12-29 |
Family
ID=27348167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA312,460A Expired CA1115432A (en) | 1977-10-13 | 1978-10-02 | Aerobic/anaerobic sludge digestion process |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5464848A (da) |
| AT (1) | AT385979B (da) |
| BR (1) | BR7806742A (da) |
| CA (1) | CA1115432A (da) |
| DD (1) | DD140740A5 (da) |
| DE (1) | DE2844498C2 (da) |
| DK (1) | DK454978A (da) |
| ES (2) | ES474110A1 (da) |
| FR (1) | FR2440920A2 (da) |
| GB (1) | GB2006743A (da) |
| IT (1) | IT1116823B (da) |
| PH (1) | PH17462A (da) |
| SU (1) | SU973013A3 (da) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2852544C2 (de) * | 1978-12-05 | 1982-11-04 | Menzel Gmbh & Co, 7000 Stuttgart | Verfahren zum Stabilisieren und weitgehenden Hygienisieren von Abwasserschlamm aus Abwasserreinigungsanlagen |
| US4276174A (en) * | 1980-03-26 | 1981-06-30 | Union Carbide Corporation | Control of sludge temperature in autothermal sludge digestion |
| FR2614888B1 (fr) * | 1987-05-07 | 1989-08-18 | Jullien Antonin | Procede de fermentation methanique de matieres organiques et dispositif pour sa mise en oeuvre |
| DE3813844C2 (de) * | 1988-04-23 | 1993-12-23 | Fuchs Leonhard | Verfahren zur Entseuchung von Klärschlamm |
| AT397382B (de) * | 1992-01-14 | 1994-03-25 | Ingerle Kurt Dipl Ing Dr Techn | Verfahren zur denitrifikation von abwasser |
| ES2070787B1 (es) * | 1993-12-01 | 1996-01-01 | S E De Carburos Metalicos S A | Nuevo procedimiento para la digestion de fangos en los tratamientos de depuracion de aguas residuales. |
| US7972500B2 (en) | 2004-07-30 | 2011-07-05 | Eiwa Land Environment Co., Ltd | Waste water purification apparatus |
| US7344643B2 (en) | 2005-06-30 | 2008-03-18 | Siemens Water Technologies Holding Corp. | Process to enhance phosphorus removal for activated sludge wastewater treatment systems |
| JP4929641B2 (ja) * | 2005-08-04 | 2012-05-09 | 日本下水道事業団 | 有機性廃液処理装置 |
| WO2007028149A2 (en) | 2005-09-02 | 2007-03-08 | Siemens Water Technologies Corp. | Screening of inert solids from a low-yield wastewater treatment process |
| JP4665693B2 (ja) * | 2005-09-30 | 2011-04-06 | 栗田工業株式会社 | 有機性廃棄物の処理方法および処理装置 |
| WO2007103499A2 (en) | 2006-03-07 | 2007-09-13 | Siemens Water Technologies Corp. | Multivalent metal ion management for low sludge processes |
| US8894857B2 (en) | 2008-03-28 | 2014-11-25 | Evoqua Water Technologies Llc | Methods and systems for treating wastewater |
| US8894856B2 (en) | 2008-03-28 | 2014-11-25 | Evoqua Water Technologies Llc | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods |
| WO2009120384A2 (en) | 2008-03-28 | 2009-10-01 | Siemens Water Technologies Corp. | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods |
| WO2011068931A1 (en) | 2009-12-03 | 2011-06-09 | Siemens Industry, Inc. | Systems and methods for nutrient removal in biological treatment systems |
| US9359236B2 (en) | 2010-08-18 | 2016-06-07 | Evoqua Water Technologies Llc | Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle |
| WO2012024279A1 (en) | 2010-08-18 | 2012-02-23 | Siemens Industry, Inc. | Contact-stabilization/prime-float hybrid |
| US10131550B2 (en) | 2013-05-06 | 2018-11-20 | Evoqua Water Technologies Llc | Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle |
| CN110683724B (zh) * | 2019-11-13 | 2022-04-05 | 湖南军信环保股份有限公司 | 一种提升厌氧污泥离心脱水效率的处理方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3368967A (en) * | 1965-10-19 | 1968-02-13 | Beloit Corp | Process for treatment of sludge and apparatus therefor |
| DE1584958A1 (de) * | 1965-12-20 | 1970-02-05 | Heinrich Onnen | Verfahren und Vorrichtung zum Reinigen von Abwaessern |
| US3926794A (en) * | 1974-06-28 | 1975-12-16 | Union Carbide Corp | Warm sludge digestion with oxygen |
-
1978
- 1978-10-02 CA CA312,460A patent/CA1115432A/en not_active Expired
- 1978-10-04 PH PH21677A patent/PH17462A/en unknown
- 1978-10-11 ES ES474110A patent/ES474110A1/es not_active Expired
- 1978-10-12 JP JP12474378A patent/JPS5464848A/ja active Pending
- 1978-10-12 IT IT5148278A patent/IT1116823B/it active
- 1978-10-12 DE DE2844498A patent/DE2844498C2/de not_active Expired
- 1978-10-12 FR FR7829130A patent/FR2440920A2/fr active Granted
- 1978-10-12 BR BR7806742A patent/BR7806742A/pt unknown
- 1978-10-12 GB GB7840379A patent/GB2006743A/en not_active Withdrawn
- 1978-10-12 AT AT732678A patent/AT385979B/de active
- 1978-10-12 DK DK454978A patent/DK454978A/da not_active Application Discontinuation
- 1978-10-12 SU SU782676102A patent/SU973013A3/ru active
- 1978-10-13 DD DD78208442A patent/DD140740A5/de unknown
-
1979
- 1979-01-05 ES ES476599A patent/ES476599A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT7851482A0 (it) | 1978-10-12 |
| JPS5464848A (en) | 1979-05-25 |
| DK454978A (da) | 1979-04-14 |
| FR2440920A2 (fr) | 1980-06-06 |
| SU973013A3 (ru) | 1982-11-07 |
| ATA732678A (de) | 1987-11-15 |
| ES476599A1 (es) | 1979-07-16 |
| IT1116823B (it) | 1986-02-10 |
| DE2844498A1 (de) | 1979-04-19 |
| DE2844498C2 (de) | 1985-08-29 |
| FR2440920B2 (da) | 1984-06-29 |
| PH17462A (en) | 1984-08-29 |
| GB2006743A (en) | 1979-05-10 |
| BR7806742A (pt) | 1979-05-08 |
| AT385979B (de) | 1988-06-10 |
| DD140740A5 (de) | 1980-03-26 |
| ES474110A1 (es) | 1979-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |