IT1135296B - Filtro biologico e relativo procedimento - Google Patents

Filtro biologico e relativo procedimento

Info

Publication number
IT1135296B
IT1135296B IT1950781A IT1950781A IT1135296B IT 1135296 B IT1135296 B IT 1135296B IT 1950781 A IT1950781 A IT 1950781A IT 1950781 A IT1950781 A IT 1950781A IT 1135296 B IT1135296 B IT 1135296B
Authority
IT
Italy
Prior art keywords
biological filter
related procedure
procedure
biological
filter
Prior art date
Application number
IT1950781A
Other languages
English (en)
Other versions
IT8119507A0 (it
Inventor
Enrique R Witt
Original Assignee
Celanese Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Celanese Corp filed Critical Celanese Corp
Publication of IT8119507A0 publication Critical patent/IT8119507A0/it
Application granted granted Critical
Publication of IT1135296B publication Critical patent/IT1135296B/it

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2806Anaerobic processes using solid supports for microorganisms
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/301Aerobic and anaerobic treatment in the same reactor
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00Constructional details, e.g. recesses, hinges
    • C12M23/36Means for collection or storage of gas; Gas holders
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M25/00Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
    • C12M25/02Membranes; Filters
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/02Percolation
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/44Means for regulation, monitoring, measurement or control, e.g. flow regulation of volume or liquid level
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008Controlling the process
    • B01J2208/0061Controlling the level
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00Liquid purification or separation
    • Y10S210/902Materials removed
    • Y10S210/903Nitrogenous

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Zoology (AREA)
  • Microbiology (AREA)
  • Genetics & Genomics (AREA)
  • General Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Molecular Biology (AREA)
  • Immunology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Clinical Laboratory Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Treatment Of Sludge (AREA)
IT1950781A 1980-02-06 1981-02-05 Filtro biologico e relativo procedimento IT1135296B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/118,935 US4351729A (en) 1980-02-06 1980-02-06 Biological filter and process

Publications (2)

Publication Number Publication Date
IT8119507A0 IT8119507A0 (it) 1981-02-05
IT1135296B true IT1135296B (it) 1986-08-20

Family

ID=22381638

Family Applications (1)

Application Number Title Priority Date Filing Date
IT1950781A IT1135296B (it) 1980-02-06 1981-02-05 Filtro biologico e relativo procedimento

Country Status (9)

Country Link
US (1) US4351729A (it)
JP (1) JPS56126484A (it)
BE (1) BE887396A (it)
CA (1) CA1147874A (it)
DE (1) DE3103760A1 (it)
FR (1) FR2475030A1 (it)
GB (1) GB2068929B (it)
IT (1) IT1135296B (it)
NL (1) NL8100401A (it)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ197992A (en) * 1980-08-18 1984-07-31 Unisearch Ltd Anaerobic bacterial degradation of organic materials
US4599168A (en) * 1980-09-15 1986-07-08 Bacardi Corporation Apparatus for treatment of waste water having selective recycle control
US4599167A (en) * 1980-09-15 1986-07-08 Bacardi Corporation Apparatus for treatment of waste water
CH655294A5 (de) * 1981-05-20 1986-04-15 Sulzer Ag Verfahren zur denitrifikation von wasser und anlage zur durchfuehrung des verfahrens.
DE3361853D1 (en) * 1982-08-06 1986-02-27 Buchs Umwelttech Utb Fixed bed reactor for the treatment, especially the anaerobic treatment of sewage sludge or liquids heavily polluted with organic compounds
SE452879B (sv) * 1982-12-20 1987-12-21 Kernforschungsanlage Juelich Forfarande for kontinuerlig anaerob nedbrytning av organiska foreningar
GB2140402B (en) * 1983-05-23 1987-05-28 Biosystem E Ab Plant for processing organic material
DE3326939A1 (de) * 1983-07-26 1985-02-07 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zur anaeroben biologischen reinigung von abwasser
GB8407469D0 (en) * 1984-03-22 1984-05-02 Bio System Eng Pte Ltd Salt trap
DE3414999A1 (de) * 1984-04-19 1985-10-31 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zum anaeroben abbau von organischem substrat
IE850276L (en) * 1985-02-05 1986-08-05 Envirecon Serv Ltd Countering scale formation in a fluid flow system
EP0193979A3 (fr) * 1985-02-25 1989-01-11 ACEC, Société Anonyme Procédé d'élimination de nitrates au moyen d'une conversion micro-biologique en présence d'hydrogène gazeux
US4722741A (en) * 1985-03-11 1988-02-02 Gas Research Institute Production of high methane content product by two phase anaerobic digestion
US4676906A (en) * 1985-03-26 1987-06-30 Gore & Storrie Limited Hybrid high rate anaerobic treatment process
US4780198A (en) * 1985-03-26 1988-10-25 Gore & Storrie Ltd. Hybrid high rate anaerobic treatment apparatus
US4614588A (en) * 1985-08-22 1986-09-30 Dorr-Oliver Incorporated Method for sulfide toxicity reduction
NL8502330A (nl) * 1985-08-23 1987-03-16 Mutlireaktor Bv Werkwijze en installatie voor de anaerobe zuivering van afvalwater.
US4735724A (en) * 1986-07-30 1988-04-05 Gas Research Institute Solids concentrating anaerobic digestion process and apparatus
SE466198B (sv) * 1986-09-24 1992-01-13 Ac Biotechnics Ab Foerfarande foer foerbehandling av vatten paa biologisk vaeg i syfte att utfoera avgiftning av svavelfoereningar ur vattnet
FI89581C (fi) * 1987-04-08 1993-10-25 Imatran Voima Oy Foerfarande foer behandling av avfall som innehaoller laogaktiva organiska avfallssammansaettningar fraon kaernkraftverk med hjaelp av anaerobisk jaesning
US4826600A (en) * 1987-06-24 1989-05-02 Amoco Corporation Process for treatment of wastewater
DE3825229A1 (de) * 1988-07-25 1990-02-01 Wehrle Werk Ag Verfahren und vorrichtung zur biologischen verarbeitung von organisch belasteten fluessigkeiten
US5006249A (en) * 1988-12-29 1991-04-09 Exxon Research And Engineering Company Anaerobic waste water treating process
US4983297A (en) * 1988-12-29 1991-01-08 Exxon Research And Engineering Company Waste water treating process scheme
US4921604A (en) * 1989-03-21 1990-05-01 Biotech Industries Incorporated Upflow biological reator waste water treatment system
JPH0696155B2 (ja) * 1989-08-25 1994-11-30 日本碍子株式会社 有機性廃水のメタン醗酵による処理方法および処理装置
FR2651769B1 (fr) * 1989-09-14 1992-04-24 Degremont Procede de traitement, par fermentation anaerobie, d'eaux residuaires en vue de l'elimination de la matiere organique et des sulfates qu'elles contiennent.
GB9110201D0 (en) * 1991-05-10 1991-07-03 Robertson William Treatment of agricultural nitrate pollution
DE4308832C1 (de) * 1993-03-19 1994-04-07 Buna Ag Verfahren zur Entfernung organischer Verunreinigungen aus Rohwässern
US5746919B1 (en) * 1993-09-22 2000-06-06 Univ Iowa State Res Found Inc Temperature-phased anaerobic waste treatment process
US5525228B1 (en) * 1993-09-22 2000-05-30 Univ Iowa State Res Found Inc Temperature-phased anaerobic waste treatment process
US5496472A (en) * 1993-12-20 1996-03-05 Tetra Technologies, Inc. Method and apparatus for denitrification of wastewater
US6571810B1 (en) 1994-09-30 2003-06-03 Zymo International, Inc. Parts washing system
CA2160311A1 (en) * 1995-10-11 1997-04-12 Bechara Safi Method of extracting light volatile solvents from a gaseous effluent by wet-scrubbing a gaseous effluent and biomethanation of the solvent-rich liquid
US5776344A (en) * 1995-10-26 1998-07-07 Tetra Technologies Inc. Method for removing nitrogen from wastewater
US6120627A (en) * 1995-11-17 2000-09-19 The Ensign-Bickford Company Explosive with bioremediating capacity
US5763815A (en) * 1995-11-17 1998-06-09 The Ensign-Bickford Company Apparatus for bioemediating explosives
US5736669A (en) * 1995-11-17 1998-04-07 The Ensign-Bickford Company Systems for bioremediating explosives
US6334395B1 (en) * 1995-11-17 2002-01-01 The Ensign-Bickford Company Methods, apparatus, and systems for accelerated bioremediation of explosives
US5681471A (en) * 1996-01-11 1997-10-28 The Regents Of The University Of Colorado Biological denitrification of water
US5733454A (en) * 1996-04-26 1998-03-31 Ehh Holding Co., Inc. Process and apparatus for the treatment of flowable waste
US5976377A (en) * 1998-08-14 1999-11-02 Environmental Systems Corporation System and method for the reduction of the biological oxygen demand level of a flowable waste water
US6106719A (en) * 1998-09-14 2000-08-22 Director-General Of Agency Of Industrial Science And Technology Process for treating liquid waste using light under anaerobic conditions
RU2154865C2 (ru) * 1998-11-23 2000-08-20 Тумченок Виктор Игнатьевич Установка для обработки и утилизации сточных вод
US6436288B1 (en) 1999-02-08 2002-08-20 Mississippi State University Bast medium biological reactor treatment system for remediation and odor suppression of organic waste streams
US6183643B1 (en) 1999-02-24 2001-02-06 Ag Tech International, Inc. Method and apparatus for denitrification of water
EP2142480A4 (en) * 2000-04-03 2010-01-13 Richard A Haase DRINKING WATER CLEANING PROCESS WITH BIOFILTRATION
US6565750B2 (en) 2000-08-31 2003-05-20 O'brien & Gere Engineers, Inc. Trickling filter system for biological nutrient removal
US6454944B1 (en) 2000-11-08 2002-09-24 Larry J. Raven Process and apparatus for conversion of biodegradable organic materials into product gas
US20030085174A1 (en) * 2001-04-19 2003-05-08 Zappi Mark E On-site biological treatment of contaminated fluids
WO2003045853A1 (fr) * 2001-11-28 2003-06-05 Ebara Corporation Procede et dispositif de filtration a biomembrane
DE10206772A1 (de) * 2002-02-19 2003-09-04 Hoefer Bioreact Gmbh Neuartiger Rieselbett-Bioreaktor mit Wirbelbett-Regeneration
WO2005033010A2 (en) * 2003-10-03 2005-04-14 O.K. Technologies, Llc. Waste water treatment system and process
DE102004030366A1 (de) * 2004-06-23 2006-01-19 Munters Euroform Gmbh Tropfkörpereinheit einer Abwasserbehandlungsanlage
US7309434B2 (en) * 2004-06-28 2007-12-18 Potts David A Apparatus and method for wastewater treatment
JP2006116381A (ja) * 2004-10-19 2006-05-11 Kazuaki Tamatsubo 有機性排水のメタン発酵処理方法および装置
US7682813B1 (en) * 2005-03-10 2010-03-23 Arrowhead Center, Inc. Methane generation from waste materials
US7344643B2 (en) 2005-06-30 2008-03-18 Siemens Water Technologies Holding Corp. Process to enhance phosphorus removal for activated sludge wastewater treatment systems
EP1928794A4 (en) 2005-09-02 2012-05-09 Siemens Industry Inc ABSORBENT OF INERT SOLIDS FROM A WASTE TREATMENT PROCESS WITH LOW BELLY MUD
US7473364B2 (en) 2006-03-07 2009-01-06 Siemens Water Technologies Corp. Multivalent metal ion management for low sludge processes
US8894856B2 (en) 2008-03-28 2014-11-25 Evoqua Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
EP2279152A4 (en) 2008-03-28 2012-11-28 Siemens Industry Inc SYSTEMS AND METHODS FOR AEROBIC AND ANAEROBIC HYBRID TREATMENT OF WASTEWATER AND SLUDGE
JP2011050902A (ja) * 2009-09-03 2011-03-17 Toshiba Corp 汚水の水処理システム
WO2011068931A1 (en) * 2009-12-03 2011-06-09 Siemens Industry, Inc. Systems and methods for nutrient removal in biological treatment systems
EP2560922A4 (en) 2010-04-21 2015-10-07 Evoqua Water Technologies Pte Ltd METHOD AND SYSTEMS FOR WASTEWATER PROCESSING
DE102011051836A1 (de) 2010-07-15 2012-01-19 Brandenburgische Technische Universität Cottbus Verfahren und Vorrichtung zur Nutzung gasförmiger Substrate für die Gewinnung von Biogas
US9359236B2 (en) 2010-08-18 2016-06-07 Evoqua Water Technologies Llc Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
CN103068748A (zh) 2010-08-18 2013-04-24 西门子工业公司 接触-稳定/初期-浮选混合
DE102011054298A1 (de) * 2011-10-07 2013-04-11 Jürgen Beck Methanerzeugungseinheit und Biomasse-Vergärungsanlage
US9969635B2 (en) 2011-11-18 2018-05-15 Infilco Degremont, Inc. Downflow denitrification system
JP5930798B2 (ja) * 2012-03-29 2016-06-08 大阪瓦斯株式会社 有機排水の処理方法および装置
AU2014262972B2 (en) 2013-05-06 2017-09-28 Evoqua Water Technologies Llc Wastewater biosorption with dissolved air flotation
DE102013209734B4 (de) 2013-05-24 2017-07-27 Brandenburgische Technische Universität Cottbus-Senftenberg Verfahren und Vorrichtung für die Methanisierung von Gasen mittels Rieselbettreaktoren
CN103496786B (zh) * 2013-10-22 2015-06-17 南京大学 一种低能耗的反硝化生物滤池装置及其处理方法
US10443356B1 (en) * 2016-09-21 2019-10-15 Hydrozonix, Llc Flare system using produced water
US11162330B1 (en) 2016-09-21 2021-11-02 Hydrozonix, Llc Flare system using produced water and ozone injection
EP3897919A4 (en) * 2018-12-23 2022-10-19 Hydrozonix, Llc TORCH SYSTEM USING PRODUCED WATER AND OZONE INJECTION
FR3094723B1 (fr) * 2019-04-08 2024-12-13 Institut Nat Des Sciences Appliquees De Toulouse Procédé et Dispositif pour la production de méthane

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB521036A (en) * 1938-03-29 1940-05-09 Joseph Darius Griffin Improvements in sewage sludge digestion
US3520802A (en) * 1968-04-26 1970-07-21 Edgar H Pavia Method of treating liquid wastes
US3709364A (en) * 1970-09-02 1973-01-09 Dravo Corp Method and apparatus for denitrification of treated sewage
US3867284A (en) * 1972-06-02 1975-02-18 Kappe Associates Inc Water treatment with nitrogen dioxide
US3846289A (en) * 1972-06-19 1974-11-05 Ecolotrol Waste treatment process
SE373116B (it) * 1972-11-27 1975-01-27 P S Delin
GB1462736A (en) 1974-05-09 1977-01-26 Celanese Corp Anaerobic waste treatment process employing recycle of purified effluent
US4182675A (en) * 1974-07-12 1980-01-08 Ecolotrol, Inc. Waste treatment process
DE2549415C2 (de) 1975-11-04 1982-11-04 Preussag Ag, 3000 Hannover Und 1000 Berlin Verfahren zur Denitrifizierung von nitrathaltigem Wasser
DE2553050A1 (de) * 1975-11-26 1977-06-16 Baensch Tetra Werke Geraet und verfahren zur austreibung von im wasser geloesten verunreinigungen, hauptsaechlich nitraten
US4043936A (en) * 1976-02-24 1977-08-23 The United States Of America As Represented By United States Energy Research And Development Administration Biological denitrification of high concentration nitrate waste
ZA763788B (en) * 1976-06-25 1978-02-22 Aeci Ltd Biological process
JPS54108464A (en) * 1978-02-14 1979-08-25 Chiyoda Chem Eng & Constr Co Ltd Method of biologically treating drainage by downward flow
US4311593A (en) * 1980-09-15 1982-01-19 Bacardi Corporation Process for treatment of waste water

Also Published As

Publication number Publication date
FR2475030A1 (fr) 1981-08-07
IT8119507A0 (it) 1981-02-05
BE887396A (fr) 1981-08-05
JPS56126484A (en) 1981-10-03
GB2068929A (en) 1981-08-19
US4351729A (en) 1982-09-28
NL8100401A (nl) 1981-09-01
DE3103760A1 (de) 1981-12-17
CA1147874A (en) 1983-06-07
GB2068929B (en) 1983-09-14

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