DE2102780C3 - Verfahren und Vorrichtung zum Zurückhalten von in einer Trübe suspendierten Feststoffen - Google Patents
Verfahren und Vorrichtung zum Zurückhalten von in einer Trübe suspendierten FeststoffenInfo
- Publication number
- DE2102780C3 DE2102780C3 DE2102780A DE2102780A DE2102780C3 DE 2102780 C3 DE2102780 C3 DE 2102780C3 DE 2102780 A DE2102780 A DE 2102780A DE 2102780 A DE2102780 A DE 2102780A DE 2102780 C3 DE2102780 C3 DE 2102780C3
- Authority
- DE
- Germany
- Prior art keywords
- sieve
- pulp
- parallel
- liquid
- chamber
- 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
- 239000007787 solid Substances 0.000 title claims description 60
- 238000000034 method Methods 0.000 title claims description 24
- 239000002002 slurry Substances 0.000 title claims 2
- 239000007788 liquid Substances 0.000 claims description 58
- 239000002245 particle Substances 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 239000010802 sludge Substances 0.000 claims description 12
- 239000002351 wastewater Substances 0.000 claims description 7
- 210000004262 dental pulp cavity Anatomy 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 208000032974 Gagging Diseases 0.000 claims 1
- 206010038776 Retching Diseases 0.000 claims 1
- 238000005276 aerator Methods 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 claims 1
- 230000005484 gravity Effects 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 5
- 238000005273 aeration Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 230000027455 binding Effects 0.000 description 2
- 238000009739 binding Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- REIDAMBAPLIATC-UHFFFAOYSA-N 4-methoxycarbonylbenzoic acid Chemical compound COC(=O)C1=CC=C(C(O)=O)C=C1 REIDAMBAPLIATC-UHFFFAOYSA-N 0.000 description 1
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 229920004934 Dacron® Polymers 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 241000845082 Panama Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- WOZVHXUHUFLZGK-UHFFFAOYSA-N terephthalic acid dimethyl ester Natural products COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009941 weaving 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
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1242—Small compact installations for use in homes, apartment blocks, hotels or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
- B01D29/115—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration open-ended, the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
- B01D29/118—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration open-ended
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
- B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
- B01D29/605—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by level measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/885—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices with internal recirculation through the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/28—Strainers not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
-
- 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
- C02F3/06—Aerobic processes using submerged filters
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/04—Supports for the filtering elements
- B01D2201/043—Filter tubes connected to plates
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- 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)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Treatment Of Sludge (AREA)
- Activated Sludge Processes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US717170A | 1970-01-30 | 1970-01-30 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2102780A1 DE2102780A1 (de) | 1971-08-12 |
| DE2102780B2 DE2102780B2 (de) | 1975-01-30 |
| DE2102780C3 true DE2102780C3 (de) | 1975-09-04 |
Family
ID=21724629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2102780A Expired DE2102780C3 (de) | 1970-01-30 | 1971-01-21 | Verfahren und Vorrichtung zum Zurückhalten von in einer Trübe suspendierten Feststoffen |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3764525A (enExample) |
| AT (1) | AT317790B (enExample) |
| BE (1) | BE762335A (enExample) |
| BR (1) | BR7100405D0 (enExample) |
| CA (1) | CA958984A (enExample) |
| CH (1) | CH529580A (enExample) |
| DE (1) | DE2102780C3 (enExample) |
| FR (1) | FR2077183A5 (enExample) |
| GB (1) | GB1339735A (enExample) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4070292A (en) * | 1975-08-25 | 1978-01-24 | American Water Recycling Company | Apparatus for treating sewage |
| JPS603873B2 (ja) * | 1978-03-31 | 1985-01-31 | 東レ株式会社 | 水処理方法 |
| US4190543A (en) * | 1978-07-19 | 1980-02-26 | Beckman William J Jr | Waste water treatment apparatus |
| DE2907810C2 (de) * | 1979-02-28 | 1985-07-04 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Wärmetauscher zur Führung von Gasen stark unterschiedlicher Temperaturen |
| US4749479A (en) * | 1982-05-26 | 1988-06-07 | Phillips Petroleum Company | Apparatus for separation of liquids and solids using fabrics |
| DE3408759A1 (de) * | 1984-03-09 | 1985-09-12 | Linde Ag, 6200 Wiesbaden | Verfahren und vorrichtung zur biologischen reinigung von abwasser |
| US4749485A (en) * | 1984-07-19 | 1988-06-07 | Degraffenreid Howard T | Triangular filter cartridge having triangular passage |
| EP0263200A1 (en) * | 1986-09-19 | 1988-04-13 | Howard T. Degraffenreid | Filter cartridge and apparatus |
| GB2223689B (en) * | 1988-08-09 | 1992-10-07 | Alexander Farquhar | Water filter |
| US5192441A (en) * | 1989-02-14 | 1993-03-09 | Omnium De Traitements Et De Valorisation (Otv) | Process and installation for biological treatment, e.g. by nitrification and/or denitrification, of an effluent including nitrated pollution |
| US5032293A (en) * | 1989-05-23 | 1991-07-16 | Buckman Laboratories International, Inc. | Basket filter assembly with inclined nozzle |
| DE4126528A1 (de) * | 1991-08-10 | 1993-02-11 | Guenther Weikmann | Klaerschlammentwaesserungssystem |
| DE9213913U1 (de) * | 1992-10-15 | 1993-01-14 | Scheible Versorgungsanlagen GmbH, 7340 Geislingen | Vorrichtung zum Entsorgen von flüssigen Medien |
| CH687525A5 (de) * | 1994-06-15 | 1996-12-31 | Guenther Weikmann | Biologische Reinigungsvorrichtung und Verfahren zur Abwasserreinigung unter Verwendung derselben |
| US5642781A (en) * | 1994-10-07 | 1997-07-01 | Baker Hughes Incorporated | Multi-passage sand control screen |
| US5624560A (en) * | 1995-04-07 | 1997-04-29 | Baker Hughes Incorporated | Wire mesh filter including a protective jacket |
| EP0745414A1 (de) * | 1995-05-30 | 1996-12-04 | Siemens Aktiengesellschaft | Querstromfilter |
| DE19539042C1 (de) * | 1995-10-20 | 1996-12-19 | Autec Abwasser Und Umwelt Tech | Anlage für die biologische Behandlung von Abwässern |
| FR2768540A1 (fr) * | 1997-09-16 | 1999-03-19 | Jean Pierre Delettre | Installation d'animation hydraulique generant des motifs d'ecoulement bi-dimensionnels, deversoir utilise dans celle-ci et procede de mise en oeuvre |
| EP1033348A4 (en) * | 1998-03-06 | 2002-02-06 | Nippon Kokan Kk | METHOD AND DEVICE FOR TREATING WASTEWATER |
| US6153099A (en) * | 1998-12-21 | 2000-11-28 | Smith & Loveless, Inc. | Biological waste treatment process and apparatus |
| FR2821345B1 (fr) * | 2001-02-27 | 2003-11-14 | Degremont | Procede d'epuration biologique des eaux residuaires en cultures mixtes |
| US6821425B2 (en) * | 2002-02-06 | 2004-11-23 | U.S. Environmental Protection Agency | Biomass concentrator reactor |
| US20120055869A1 (en) * | 2009-02-20 | 2012-03-08 | Headworks Bio Inc. | Water treatment reactor screening system and method |
| US20120118819A1 (en) * | 2010-11-11 | 2012-05-17 | Israel Amichay Bachar | In-situ, microbial bio-remediation of aquatic environments |
| US8764976B2 (en) * | 2011-08-12 | 2014-07-01 | Veolia Water Solutions & Technologies Support | Biological wastewater system having a screen structure for confining biofilm carriers to a reactor forming a part of the system |
| MA53600A (fr) * | 2018-09-10 | 2021-07-21 | Ivar Spa | Dispositif et procédé de filtrage d'un fluide circulant dans un système de plomberie et de chauffage |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2407303A (en) * | 1943-08-13 | 1946-09-10 | Filter Media Corp | Apparatus for reducing the fluid content of a fluid-solid intermixture |
| US2830947A (en) * | 1954-10-26 | 1958-04-15 | Llewellyn B Griffith | Method of forming and maintaining an organic filter |
| US3051315A (en) * | 1957-08-01 | 1962-08-28 | Carl F Boester | Sewage treatment apparatus |
| US3398088A (en) * | 1966-09-09 | 1968-08-20 | Dorr Oliver Inc | Phosphorous removal in membrane waste water treatment |
| US3440669A (en) * | 1967-04-03 | 1969-04-29 | Carl F Boester | Household toilet waste disposal unit and method |
| US3543294A (en) * | 1969-04-21 | 1970-11-24 | Carl F Boester | Household water conservation system |
| US3530990A (en) * | 1969-05-08 | 1970-09-29 | Environmental Services Inc | Sewage treatment system |
| US3575850A (en) * | 1969-07-07 | 1971-04-20 | Fmc Corp | Method and apparatus for treating waste materials |
-
1970
- 1970-01-30 US US3764525D patent/US3764525A/en not_active Expired - Lifetime
- 1970-12-07 CA CA099,982A patent/CA958984A/en not_active Expired
- 1970-12-11 GB GB5897170A patent/GB1339735A/en not_active Expired
-
1971
- 1971-01-18 CH CH70471A patent/CH529580A/de not_active IP Right Cessation
- 1971-01-19 AT AT40571A patent/AT317790B/de not_active IP Right Cessation
- 1971-01-21 DE DE2102780A patent/DE2102780C3/de not_active Expired
- 1971-01-21 BR BR40571A patent/BR7100405D0/pt unknown
- 1971-01-29 BE BE762335A patent/BE762335A/xx unknown
- 1971-01-29 FR FR7103165A patent/FR2077183A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH529580A (de) | 1972-10-31 |
| US3764525A (en) | 1973-10-09 |
| GB1339735A (en) | 1973-12-05 |
| BR7100405D0 (pt) | 1973-04-26 |
| DE2102780A1 (de) | 1971-08-12 |
| FR2077183A5 (enExample) | 1971-10-15 |
| AT317790B (de) | 1974-09-10 |
| BE762335A (fr) | 1971-07-01 |
| CA958984A (en) | 1974-12-10 |
| DE2102780B2 (de) | 1975-01-30 |
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