CH627719A5 - Sludge digestion process - Google Patents
Sludge digestion process Download PDFInfo
- Publication number
- CH627719A5 CH627719A5 CH142178A CH142178A CH627719A5 CH 627719 A5 CH627719 A5 CH 627719A5 CH 142178 A CH142178 A CH 142178A CH 142178 A CH142178 A CH 142178A CH 627719 A5 CH627719 A5 CH 627719A5
- Authority
- CH
- Switzerland
- Prior art keywords
- sludge
- digestion
- zone
- gas
- oxygen
- Prior art date
Links
- 230000029087 digestion Effects 0.000 title claims description 424
- 239000010802 sludge Substances 0.000 title claims description 422
- 238000000034 method Methods 0.000 title claims description 123
- 230000008569 process Effects 0.000 title claims description 80
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 152
- 239000007789 gas Substances 0.000 claims description 126
- 239000007787 solid Substances 0.000 claims description 115
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 113
- 239000001301 oxygen Substances 0.000 claims description 113
- 229910052760 oxygen Inorganic materials 0.000 claims description 113
- 238000005273 aeration Methods 0.000 claims description 71
- 238000011282 treatment Methods 0.000 claims description 69
- 239000000725 suspension Substances 0.000 claims description 35
- 239000002351 wastewater Substances 0.000 claims description 35
- 239000012530 fluid Substances 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 16
- 238000000855 fermentation Methods 0.000 claims description 13
- 230000004151 fermentation Effects 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 230000020477 pH reduction Effects 0.000 claims description 12
- 238000004064 recycling Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 6
- 230000008030 elimination Effects 0.000 claims description 5
- 238000003379 elimination reaction Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims 2
- 239000002002 slurry Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 83
- 239000012071 phase Substances 0.000 description 27
- 230000009467 reduction Effects 0.000 description 27
- 238000010438 heat treatment Methods 0.000 description 24
- 230000000696 methanogenic effect Effects 0.000 description 21
- 230000006641 stabilisation Effects 0.000 description 20
- 238000011105 stabilization Methods 0.000 description 20
- 241000894006 Bacteria Species 0.000 description 19
- 239000003570 air Substances 0.000 description 18
- 230000002829 reductive effect Effects 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 230000000694 effects Effects 0.000 description 15
- 230000007423 decrease Effects 0.000 description 12
- 244000005700 microbiome Species 0.000 description 12
- 238000004062 sedimentation Methods 0.000 description 11
- 238000012546 transfer Methods 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 230000002053 acidogenic effect Effects 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000005352 clarification Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 238000004065 wastewater treatment Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000005842 biochemical reaction Methods 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 230000036961 partial effect Effects 0.000 description 6
- 239000006228 supernatant Substances 0.000 description 6
- 239000002562 thickening agent Substances 0.000 description 6
- 231100000331 toxic Toxicity 0.000 description 6
- 230000002588 toxic effect Effects 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 5
- 238000010907 mechanical stirring Methods 0.000 description 5
- 150000002739 metals Chemical class 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
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 239000000543 intermediate Substances 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000004071 biological effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000004098 cellular respiration Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 238000009928 pasteurization Methods 0.000 description 3
- 244000052769 pathogen Species 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006037 cell lysis Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000009089 cytolysis Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011369 optimal treatment Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- -1 at least 50% oxygen Chemical compound 0.000 description 1
- 230000000721 bacterilogical effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 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
- 239000012467 final product Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- GSWAOPJLTADLTN-UHFFFAOYSA-N oxidanimine Chemical compound [O-][NH3+] GSWAOPJLTADLTN-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 238000003911 water pollution Methods 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
-
- 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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/33—Wastewater or sewage treatment systems using renewable energies using wind energy
-
- 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
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Massaging Devices (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76677077A | 1977-02-08 | 1977-02-08 | |
| US84190277A | 1977-10-13 | 1977-10-13 | |
| AU40285/78A AU517067B2 (en) | 1977-02-08 | 1978-09-28 | Anaerobic/aerobic sludge digestion process |
| KR1019780003213A KR830001900B1 (ko) | 1978-10-25 | 1978-10-25 | 호기성 및 혐기성 슬러지 분해방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH627719A5 true CH627719A5 (en) | 1982-01-29 |
Family
ID=36764066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH142178A CH627719A5 (en) | 1977-02-08 | 1978-02-08 | Sludge digestion process |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS5399653A (no) |
| AR (1) | AR214769A1 (no) |
| AU (1) | AU517067B2 (no) |
| BE (1) | BE863735A (no) |
| BR (1) | BR7800726A (no) |
| CA (1) | CA1096064A (no) |
| CH (1) | CH627719A5 (no) |
| DE (1) | DE2805054C3 (no) |
| FR (1) | FR2379485A1 (no) |
| GB (1) | GB1597395A (no) |
| HK (1) | HK37683A (no) |
| IT (1) | IT1105624B (no) |
| MX (1) | MX150615A (no) |
| NL (1) | NL190236C (no) |
| NO (1) | NO151358C (no) |
| PH (1) | PH15694A (no) |
| SE (1) | SE428125B (no) |
| SG (1) | SG21583G (no) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT363868B (de) * | 1979-06-28 | 1981-09-10 | Voest Alpine Ag | Verfahren zum spalten und aufarbeiten von emulsionen von oelen und fetten |
| JPS57174093A (en) * | 1981-04-21 | 1982-10-26 | Syst Nogyo Center:Kk | Methane fermentation method and apparatus |
| DE3134879A1 (de) * | 1981-09-03 | 1983-04-07 | Menzel Gmbh & Co, 7000 Stuttgart | Verfahren zur biochemischen stoffumsetzung |
| DE3144111A1 (de) * | 1981-11-06 | 1983-05-26 | Klöckner-Werke AG, 4100 Duisburg | Verfahren und vorrichtung zur behandlung von klaerschlamm |
| EP0120882A1 (en) * | 1982-09-28 | 1984-10-10 | W.W. Engineering A/S | A method and a system for decomposing organic waste material by bacterial action so as to generate combustible gas |
| DE3240009A1 (de) * | 1982-10-28 | 1984-05-03 | Linde Ag, 6200 Wiesbaden | Verfahren und vorrichtung zur biologischen behandlung von schlamm |
| CS240757B1 (en) * | 1983-07-04 | 1986-02-13 | Svatopluk Mackrle | Sewage biological activation treatment method with denitration in circulation system and equipment for performance of this method |
| DE3335265A1 (de) * | 1983-09-29 | 1985-05-02 | Abwasserverband Raumschaft Lahr, 7630 Lahr | Verfahren zur reduzierung des h(pfeil abwaerts)2(pfeil abwaerts)s-gehaltes bei anaeroben schlammfaulverfahren |
| DE3813844C2 (de) * | 1988-04-23 | 1993-12-23 | Fuchs Leonhard | Verfahren zur Entseuchung von Klärschlamm |
| US5130572A (en) * | 1990-12-26 | 1992-07-14 | Burr-Brown Corporation | Operational track-and-hold amplifier |
| JP4746790B2 (ja) * | 2001-08-07 | 2011-08-10 | 三菱化工機株式会社 | 汚泥処理装置及び汚泥処理方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB462941A (en) * | 1935-06-21 | 1937-03-18 | Dorr Co Inc | Improvements relating to the process of sewage sludge digestion and apparatus therefor |
| 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 |
| IL37756A (en) * | 1970-10-02 | 1974-07-31 | Alfa Laval Ab | A method for the biologic decomposition of organic material by means of thermophilic microorganisms |
| US3926794A (en) * | 1974-06-28 | 1975-12-16 | Union Carbide Corp | Warm sludge digestion with oxygen |
| FR2324581A1 (fr) * | 1975-05-14 | 1977-04-15 | Hitachi Ltd | Procede et systeme pour le traitement anaerobie des dechets biochimiques |
-
1978
- 1978-02-03 BR BR7800726A patent/BR7800726A/pt unknown
- 1978-02-07 DE DE2805054A patent/DE2805054C3/de not_active Expired
- 1978-02-07 SE SE7801404A patent/SE428125B/sv not_active IP Right Cessation
- 1978-02-07 IT IT4796178A patent/IT1105624B/it active
- 1978-02-07 JP JP1202078A patent/JPS5399653A/ja active Granted
- 1978-02-07 GB GB4813/78A patent/GB1597395A/en not_active Expired
- 1978-02-07 NL NL7801399A patent/NL190236C/xx not_active IP Right Cessation
- 1978-02-07 CA CA296,598A patent/CA1096064A/en not_active Expired
- 1978-02-07 FR FR7803362A patent/FR2379485A1/fr active Granted
- 1978-02-07 BE BE184974A patent/BE863735A/xx not_active IP Right Cessation
- 1978-02-07 AR AR27100878A patent/AR214769A1/es active
- 1978-02-07 NO NO780424A patent/NO151358C/no unknown
- 1978-02-07 MX MX17235678A patent/MX150615A/es unknown
- 1978-02-08 CH CH142178A patent/CH627719A5/fr not_active IP Right Cessation
- 1978-02-08 PH PH20762A patent/PH15694A/en unknown
- 1978-09-28 AU AU40285/78A patent/AU517067B2/en not_active Expired
-
1983
- 1983-04-28 SG SG21583A patent/SG21583G/en unknown
- 1983-09-29 HK HK37683A patent/HK37683A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT1105624B (it) | 1985-11-04 |
| NL190236C (nl) | 1993-12-16 |
| AR214769A1 (es) | 1979-07-31 |
| FR2379485B1 (no) | 1984-04-06 |
| AU517067B2 (en) | 1981-07-09 |
| SE7801404L (sv) | 1978-08-09 |
| GB1597395A (en) | 1981-09-09 |
| MX150615A (es) | 1984-06-11 |
| JPS5756400B2 (no) | 1982-11-29 |
| BR7800726A (pt) | 1978-11-28 |
| SE428125B (sv) | 1983-06-06 |
| BE863735A (fr) | 1978-08-07 |
| NO151358C (no) | 1985-03-27 |
| IT7847961A0 (it) | 1978-02-07 |
| AU4028578A (en) | 1980-04-03 |
| NL190236B (nl) | 1993-07-16 |
| CA1096064A (en) | 1981-02-17 |
| JPS5399653A (en) | 1978-08-31 |
| DE2805054B2 (de) | 1980-03-27 |
| NO780424L (no) | 1978-08-09 |
| NL7801399A (nl) | 1978-08-10 |
| PH15694A (en) | 1983-03-11 |
| NO151358B (no) | 1984-12-17 |
| DE2805054A1 (de) | 1978-08-10 |
| FR2379485A1 (fr) | 1978-09-01 |
| HK37683A (en) | 1983-10-07 |
| SG21583G (en) | 1984-07-20 |
| DE2805054C3 (de) | 1980-11-20 |
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