LV11798B - Method for composting organic materials, in particular refuse - Google Patents

Method for composting organic materials, in particular refuse Download PDF

Info

Publication number
LV11798B
LV11798B LVP-96-445A LV960445A LV11798B LV 11798 B LV11798 B LV 11798B LV 960445 A LV960445 A LV 960445A LV 11798 B LV11798 B LV 11798B
Authority
LV
Latvia
Prior art keywords
closed container
composting
air
organic materials
oxygen
Prior art date
Application number
LVP-96-445A
Other languages
Latvian (lv)
Other versions
LV11798A (en
Inventor
Schnorr Karl-Ernst
Schnorr Carsten
Original Assignee
Herhof Umwelttechnik Gmbh
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 Herhof Umwelttechnik Gmbh filed Critical Herhof Umwelttechnik Gmbh
Publication of LV11798A publication Critical patent/LV11798A/en
Publication of LV11798B publication Critical patent/LV11798B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90—Apparatus therefor
    • C05F17/964—Constructional parts, e.g. floors, covers or doors
    • C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/60—Heating or cooling during the treatment
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/145—Feedstock the feedstock being materials of biological origin
    • 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
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)
  • Treatment Of Sludge (AREA)

Abstract

In a method of composting organic materials, in particular refuse (13), the organic materials undergo biological degradation assisted by forced aeration in a closed container (4). In order to simplify a process of this kind, the exhaust air is entirely recycled into the compost material in the closed container (4) without any added oxygen.

Description

LV 11798
METHOD FOR COMPOSTING ORGANIC SUBSTANCES. IN PARTICULAR
WASTE MATERIAL
FIELD OF THE INVENTION
The invention refers to a method for composting organic substances, in particu-lar vvaste material, wherein the organic substances are decomposed biologically in a closed Container using forced ventilation.
BACKGROUND OF THE INVENTION
Methods of said kind are already knovvn. In this connection it is advantageous to refeed the exhaust air to the mass located in the Container, i.e. to carry out a so-called circulating air conduction. Thereby the amount of the exhaust air to be re-moved from the Circuit, to be set free to the atmosphere and therefore to be purified beforehand is reduced. Thereby, hovvever, the oxygen content of the air circulating through the Container is reduced. For the compensation thereof it has already been proposed to introduce fresh air into the Circuit (metered addition of fresh air). Fur-thermore it has been proposed to add pure oxygen in a metered amount.
SUMMARY OF THE INVENTION
It is therefore the object of the invention to simplify the method as described above.
Said object is solved according to the invention in that the exhaust air is com-pletely refed to the substances to be composted in said closed Container, and that no oxygen is added. Consequently, a metered addition of oxygen in the form of ambient air or pure oxygen does not take place. Thus, the oxygen content in the circulating air is reduced. It was surprisingly determined that no disadvantages are connected therevvith. It astonishingly shovved that the gas flovving through the substances to be composted does not necessarily have to comprise oxygen. It was surprisingly found - 2 - out that the oxygen required for Chemical transformation processes as taking place during the composting can be taken up by the microorganisms completely or at least in part from the water and that threrefor said microorganisms do not need any gase-ous oxygen to be supplied from the outside.
Advantageous further developments are described in the subclaims.
Preferably the heat produced during composting is dissipated. This is carried out advantageously by condensing out the moisture contained in the exhaust air and by resupplying the exhaust air without the condensed-out vvater to the Container and the substances to be composted as contained therein.
The terms „exhaust air", «circulating air" and „air“ in the sense of the invention also stand for a gas or a gas mixture in which the oxygen content is less than that of the ambient air or in vvhich there is no gaseous oxygen at ali.
BRIEF DESCRIPTION OF THE DRAVVING
One embodiment of the invention will be explained in the follovving by means of the accompanying dravving, vvherein the only figurē shows a diagram of an apparatus for performing the method.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Waste material 13 with biologically decomposable components is fed into the closed Container 4. Therein it lies on a perforated bottom. By means of a moisturing apparatus 5 the waste material 13 can be sprinkled from above with vvater.
By a forced draught fan 3 the space undemeath the perforated bottom is supplied with air vvhich flovvs through the holes of the perforated bottom upvvards and - 3 - LV 11798 through the vvaste material 13 and exits the closed Container 4 at the top. The ex-haust air is led through a heat exchanger 6 to vvhich the heat exchanger fluid 7 is fed. The moisture contained in the exhaust air is condensed thereout and is collected in Container 8. The dried exhaust air flows through the gate valve 9 and arrives once again at the closed Container 4 by means of the forced draught fan 3. Fresh air 1 can be supplied via the gate valve 2. Betvveen the heat exchanger 6 and the gate valve 9 there branches off a line through vvhich the exhaust air can be deflated via a further gate valve 10 and a filter 11 into the open air 12.
During normai operation gate valve 9 is opened and gate valves 2 and 10 are closed. Merely a circulating air conduction takes place. No fresh air is added. Through the heat exchanger 6 the heat produced during composting and the vvater contained in the circulating air will be removed. The oxygen content decreases con-tinuous!y, vvhich, hovvever, does not impair the composting process, as the oxygen required therefor is taken from the vvater vvhich is contained in the vvaste as surface vvater and as confined vvater. The composting method also vvorks in case the oxygen content in the circulating air, i.e. in the exhaust air refed into the closed Container 4 equals zero. - 4 - LV 11798
METHOD FOR COMPOSTING ORGANIC SUBSTANCES. IN PARTICULAR
WASTE MATERIAL
What is claimed is: 1. Method for composting organic substances, in particular waste materiāls (13), in which the organic substances are decomposed biologically in a closed Container (4) using forced ventilation, characterized in that the exhaust air is completely refed into the substances to be composted in the closed Container (4), no oxygen being added. 2. Method as claimed in claim 1, characterized in that the heat produced during composting is dissipated. 3. Method as claimed in claim 1 or 2, characterized in that the moisture contained in the exhaust air is condensed thereout. - 5 - LV 11798
METHOD FOR COMPOSTING ORGANIC SUBSTANCES. IN PARTICULAR
WASTE MATERIAL
Abstract
In a method for composting organic substances, in particular waste material (13), the organic substances are decomposed biologically in a closed Container (4) using forced ventilation. In order to simplify such a method, the exhaust air is completely resupplied to the substances to be composted in the closed Container (4) and no oxygen is added.

Claims (3)

LV 11798 IZGUDROJUMA FORMULA 1. Organisko vielu, īpaši atkritumu (13), kompostēšanas paņēmiens, kur organiskās vielas bioloģiski noārda slēgtā konteinerā (4), izmantojot piespiedu ventilāciju, atšķiras ar to, ka izmantoto gaisu pilnīgi ievada atpakaļ slēgtajā konteinerā (4) kompostējamā vielā, nepievadot skābekli.1. A composting method for organic substances, in particular waste (13), wherein organic matter is biodegraded in a closed container (4) using forced ventilation, characterized in that the air used is completely fed back into the closed container (4) in the compostable material. without oxygen. 2. Paņēmiens saskaņā ar 1. punktu, atšķiras ar to, ka kompostēšanas gaitā radušos siltumu izkliedē.2. A method according to claim 1, wherein the heat generated during the composting is dispersed. 3. Paņēmiens saskaņā ar 1. vai 2. punktu, atšķiras ar to, ka izmantotajā gaisā esošo mitrumu kondensē ārpus slēgtā konteinera.3. A method according to claim 1 or 2, characterized in that the moisture in the air used is condensed outside the closed container.
LVP-96-445A 1995-04-07 1996-11-28 Method for composting organic materials, in particular refuse LV11798B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19513262A DE19513262C1 (en) 1995-04-07 1995-04-07 Process for composting organic matter, especially waste
PCT/EP1996/001532 WO1996031450A1 (en) 1995-04-07 1996-04-09 Method of composting organic materials, in particular refuse

Publications (2)

Publication Number Publication Date
LV11798A LV11798A (en) 1997-06-20
LV11798B true LV11798B (en) 1997-10-20

Family

ID=7759182

Family Applications (1)

Application Number Title Priority Date Filing Date
LVP-96-445A LV11798B (en) 1995-04-07 1996-11-28 Method for composting organic materials, in particular refuse

Country Status (16)

Country Link
EP (1) EP0764145B1 (en)
JP (1) JPH10505054A (en)
KR (1) KR970703293A (en)
CN (1) CN1149865A (en)
AT (1) ATE221866T1 (en)
BR (1) BR9606299A (en)
CA (1) CA2190244A1 (en)
CZ (1) CZ348496A3 (en)
DE (2) DE19513262C1 (en)
DK (1) DK0764145T3 (en)
ES (1) ES2181884T3 (en)
LV (1) LV11798B (en)
NO (1) NO964893L (en)
PL (1) PL317464A1 (en)
PT (1) PT764145E (en)
WO (1) WO1996031450A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19641291C1 (en) * 1996-09-11 1998-02-12 Herhof Umwelttechnik Gmbh Process for the bio-thermal treatment of waste
WO2000037393A1 (en) * 1998-12-21 2000-06-29 C.S. Associated Pty. Ltd. Animal body composting
KR200447568Y1 (en) * 2009-07-23 2010-02-05 백구엔지니어링(주) A preventing device of air escape for a drain pipe in a barnyard manure factory

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201655A (en) * 1982-04-21 1983-11-16 Rutte Recycling Bv SINGLE-STAGE METHOD FOR CONTROLLING ANAEROOB CONVERTING THE ORGANIC FRACTION OF URBAN WASTE.
SE500845C2 (en) * 1989-05-30 1994-09-19 Vbb Konsult Ab Procedure for the recovery of combustible gas, soil and a fuel fraction from waste
DE59104120D1 (en) * 1990-05-09 1995-02-16 Herhof Umwelttechnik Gmbh Process for composting waste.
DE4124880C3 (en) * 1991-07-26 2002-11-21 Herhof Umwelttechnik Gmbh Process for composting organic waste
DE4215269C3 (en) * 1992-05-09 1999-02-11 Grabbe Klaus Composting plant with a ventilation system for closed rotting plants
DE4322688C2 (en) * 1993-07-07 1995-07-27 Herhof Umwelttechnik Gmbh Process for composting organic substances, especially waste
DE4345238C2 (en) * 1993-10-08 1997-03-27 Herhof Umwelttechnik Gmbh Procedure for determining the energy generated by the composting of organic substances
US5869327A (en) * 1993-11-11 1999-02-09 Grabbe; Klaus Apparatus for the biological treatment of substances and/or mixtures of substances in closed rotting reactors

Also Published As

Publication number Publication date
CZ348496A3 (en) 1997-04-16
KR970703293A (en) 1997-07-03
CN1149865A (en) 1997-05-14
NO964893D0 (en) 1996-11-18
EP0764145B1 (en) 2002-08-07
NO964893L (en) 1996-11-18
LV11798A (en) 1997-06-20
ES2181884T3 (en) 2003-03-01
JPH10505054A (en) 1998-05-19
BR9606299A (en) 1997-11-18
DK0764145T3 (en) 2002-11-11
CA2190244A1 (en) 1996-10-10
PL317464A1 (en) 1997-04-14
DE19513262C1 (en) 1996-10-24
WO1996031450A1 (en) 1996-10-10
EP0764145A1 (en) 1997-03-26
DE59609529D1 (en) 2002-09-12
ATE221866T1 (en) 2002-08-15
PT764145E (en) 2002-12-31

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