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WO1992018611A1 - Systeme de recuperation d'air - Google Patents

Systeme de recuperation d'air Download PDF

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Publication number
WO1992018611A1
WO1992018611A1 PCT/US1992/003130 US9203130W WO9218611A1 WO 1992018611 A1 WO1992018611 A1 WO 1992018611A1 US 9203130 W US9203130 W US 9203130W WO 9218611 A1 WO9218611 A1 WO 9218611A1
Authority
WO
WIPO (PCT)
Prior art keywords
digester
air
curing
compost
drum
Prior art date
Application number
PCT/US1992/003130
Other languages
English (en)
Inventor
Larry J. Finn
Original Assignee
Bedminster Bioconversion Corporation
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 Bedminster Bioconversion Corporation filed Critical Bedminster Bioconversion Corporation
Publication of WO1992018611A1 publication Critical patent/WO1992018611A1/fr

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
    • C05F17/70—Controlling the treatment in response to process parameters
    • 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
    • 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
    • C05F17/979—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being gaseous
    • 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

Definitions

  • the present invention relates to an air recovery control system for use with apparatus for making organic fertilizer, sometimes referred to as compost, or other fermentation products, from organic waste material such as municipal solid waste, sewage sludge, and the like.
  • organic fertilizer sometimes referred to as compost, or other fermentation products
  • organic waste material such as municipal solid waste, sewage sludge, and the like.
  • Prior art systems for achieving composting of solid waste and sewage sludge typically employ one or more multi-stage digesters in which material being treated undergoes staged microbial decomposition.
  • the conventional digester is divided into two or more compartments or stages and during material processing is rotated while air is circulated through the digester at controlled rates under predetermined conditions in a flow direction counter to the material flow.
  • the climate in each stage is maintained to achieve the optimum development of the type and species of microorganism predominant in that stage.
  • Spent air is vented from each stage to the atmosphere as needed to maintain an optimum climate in each of the operating stages. Temperatures are kept below 150 degrees F (65.56 C) to insure the maximum rate of composting. Moisture usually does not require adjustment during this phase of the operation, but if the material becomes too dry for composting, the digester vessel is equipped with a water manifold which allows the addition of moisture to the mass undergoing treatment. Since this phase of the composting
  • SUBSTITUTE SHEET is conducted entirely within an enclosed vessel, the only source of odor production is the exhaust air. Typical of such prior art systems and methodology of operation are those set out and described in D.S. Patents 3,245,759 and 3,138,447, the teachings of which are hereby incorporated by reference.
  • the method and apparatus for manufacture of compost described in those patents is designed to produce aerobic decomposition of organic waste materials by maintaining within the apparatus in which the method is carried out, conditions suitable for optimum propagation of the different types of aerobic bacteria on which such decomposition depends.
  • the apparatus comprises a digester in the form of a cylindrical drum mounted for rotation on an axis which is slightly declined towards the discharge end relative to the horizontal.
  • the interior of the digester is divided into a series of compartments or chambers by a plurality of transverse partition is provided with transfer buckets which are selectively opened and which, when opened, transfer material from compartment to compartment from the higher to the lower end of the drum, the raw waste organic material being fed into the digester at the higher end and the finished being withdrawn at the lower end.
  • transfer buckets which are selectively opened and which, when opened, transfer material from compartment to compartment from the higher to the lower end of the drum, the raw waste organic material being fed into the digester at the higher end and the finished being withdrawn at the lower end.
  • SUBSTITUTE SHEET currently accounts for approximately 78 percent of municipal solid waste disposal, is in severe jeopardy. The number of landfills has decreased from 20,000 in 1978 to 6,000 in 1988 and is estimated to decrease to 2,100 by the year 2000. In addition, incineration, which accounts for approximately 11 percent of municipal solid waste disposal has come under intense public scrutiny. Public opposition has been responsible for the curtailment of a significant number of proposed incineration projects.
  • the co-composting technology to which the present invention has application embodies a fermentation reactor which is employed to accelerate the microbial conversion of solid waste and sewage sludge into a high quality compost.
  • the process has the ability to compost municipal solid waste and sewage together hence the term co-composting, thus addressing the two principle waste management problems communities will face in the next few decades.
  • the co-composting process of this invention produces no toxic by-products.
  • it is a non-grind, non-shred, in-vessel aerobic process that produces a high quality compost while simultaneously sanitizing non- ⁇ ompostable residual tailings.
  • the process results in municipal solid waste volume reductions as high as 85 percent while simultaneously providing a solution to the sewage sludge problem. This is extremely important in light
  • the air recovery and odor control system comprising this invention is meant to serve the purpose of taking advantage of the exhaust air produced by the process operations and reusing it in the further operations of the system.
  • the reuse of the process produced air is a means of limiting the amount of air exhausted into the outside atmosphere, which is of major concern to environmentalists and concerned citizens.
  • the reuse of the preconditioned air is also a benefit in that external, ambient temperature air is not required for the most important steps in the process, namely, the curing of the compost during the process to further reduce pathogens. During this critical stage, it is important that the temperature be maintained at a fairly precise level for the entire period designated by the United States Environmental Protection Agency guidelines in order to achieve the
  • the residence time in the digester is normally three days.
  • the material now compost plus nondegradables, is rough screened by a one-inch (2.54 cm) trommel. Two fractions emerge from the trommel. One is the residue which fails to pass through the screen. This material is discharged back onto the tipping floor of a typical composting facility and sent to landfill. The rough compost is then conveyed to an area in which further composting or curing is carried out. For purposes of this invention this phase of further processing of the rough compost will be referred to
  • curing area shall mean an area where organic material that has undergone the rapid initial stage of composting is further stabilized into a humus-like material. It is in this stage of the process in which the pathogens primarily undergo destruction.
  • the curing stage of the process is an important phase of the dynamic aeration system which comprises the subject invention in that it is during the approximately two-week stay of the compost in the curing area that the pathogens are destroyed.
  • the temperature of the compost must be maintained within certain parameters.
  • the compost must be kept at a point in excess of 55 degrees C, yet under approximately 65 degrees C for a period of not less than 72 hours.
  • FIGURE 1 is an isometric overview of a composting facility embodying the present invention
  • FIGURE 2 is an aerial view of the facility shown in Figure 1 with portions of the enclosure removed to show the internal construction of the plant;
  • FIGURE 3 is a flow diagram of the overall composting facility detailing the aeration and odor control system
  • FIGURE 4 is floor plan showing constructional details of the facility and its operational features
  • FIGURE 5 is a detailed showing of one form of curing channel utilized in the composting process.
  • FIGURE 6 is a transverse sectional view taken along line 6-6 of Figure 5. Detailed Description of the Invention
  • a completely enclosed composting facility comprised of three major areas, t ⁇ ie tipping building 10, a processing building 12 and an aeration building 14.
  • the tipping building floor is where solid waste is dumped and sorted. Unacceptable waste, for example, white goods, car batteries, tires, large pieces of wood, etc., is rejected and sent to a
  • the acceptable waste is then moved as by means of an end loader 16 from the tipping floor into ram pits 18 positioned at the entry of the digesters 20 from where the waste is loaded directly into the digester drum by means of a screw driven or hydraulic loading ram.
  • Sewage sludge 22 delivered to the plant is stored in a liquid sludge tank 24 from where it is pumped by liquid sludge pumps 26 directly into the digesters 20 as needed to maintain the proper carbon/nitrogen ratio essential to efficient composting.
  • the sewage sludge is added to the solid waste to bring the moisture content of the overall digester charge up to about 50 percent and to bring the carbon/nitrogen ratio to 35:1 or less.
  • the material is then processed through the digester for a period of three days.
  • the digester is typically divided into three fermentation chambers or stages by means of internal partitions. Material is discharged from the digester after approximately three days of residence time. Upon removal from the digester, the material, now compost plus nondegradables is transported by belt conveyors 28 and 30 to a trommel screen 32 where it is rough screened into two fractions.
  • SUBSTITUTE digester are sanitary because of the high temperatures encountered in the digester and will not decompose for produce leachate in the landfill.
  • the second fraction is rough compost, sometimes hereinafter referred to as organic or degradable material, which is conveyed to the curing area 34 by belts 35 and 81.
  • the first area treated in the air recovery system is the floor area in the tipping building 10.
  • Ceiling mounted vents or hoods 36 overlie the floor area and serve as an intake for effluvium emanating from this area and recover it for use in the channel area 34 via ducting 46.
  • the air circulation and recovery in the tipping building * is accomplished by means of steel duct work with intake vents 36 running from a 15,000 cfm (424.75 com) electric vent fan 42. This results in between 3 and 4 air changes per hour for the building. Even though the air recovery system is quite sufficient to handle the odors produced, the tipping floor is washed down daily and raw garbage is not allowed to remain on the floor for more than a few hours.
  • the detectable odors are not the offensive, malodorous type.
  • the prevalent odors encountered at this location are the musty, earthy type variety characteristic of aerobic composting.
  • the process functions carried out in the curing area 34 are an important feature of the dynamic aeration system comprising this invention. It is during the two-week stay of the compost in the curing channels 50, as best seen in Figures 2, 4 and 5, that pathogen destruction is achieved. To accomplish this step of the process, the temperature of the compost must be maintained within prescribed parameters. The compost must be kept at a point in excess of 55 degrees C yet under approximately 65 degrees C for a period of not less than 72 hours.
  • Air for the curing channels 50 is furnished by a series of blowers which force air into the compost deposited within the curing channels through a network of perforated pipe 51.
  • a 15,000 cfm to 18,000 cfm blower fan moves the air to the intake point of the small, 1 hp 400
  • blowers 52 which served to aerate the compost stored in the concrete curing channels 50.
  • These blowers are controlled by computer 54, Figure 4, and are activated/deactivated based on parameters pre-programmed into the computer that.operate the motor control center 56.
  • the computer is programmed to activate the blowers to deliver cooler air to and through the compost housed within the channels, to lower the rising temperatures.
  • the blowers are deactivated by the computer. This is a continuously occurring cycle, as the temperatures within the compost naturally increase when left unregulated. Monitoring of the temperatures within the individual aeration zones within each curing channel is achieved through use of thermocouples placed in the channel walls. Their output is fed to the computer 54 which, in turn, controls operation of the blowers 52.
  • a prime benefit of the air recovery system is that external, ambient air is not required to be used for the compost curing step.
  • the ambient air has a great temperature differential, the introduction of outside air into the compost pile could damage many of the beneficial microbes, while causing the blowers to have to be activated/deactivated at a much quicker and much less regular rate.
  • the ambient air may not have the correct humidity or moisture levels, resulting in further variation of the warming/cooling cycle as well as the
  • Air intakes 60 and 72 See Figure 3 ⁇ to any one or all of three locations, the final compost curing area 66, to the soil filter 74, or for reintroduction into the digesters 20 via duct means 62 as individual conditions warrant.
  • Air intake vents 72 located in the ceiling are adapted to collect effluent air and vent it to the atmosphere through the soil filter 74.
  • the soil filter is a mixed intermediate consisting of two parts compost and one part gravel.
  • the filter itself has a surface area of 0.5 square feet (.0465 square meters) per cfm (.0283 cubic meters per minute).
  • the collected air is then blown through the filter and, in transit, is filtered of the odor producing elements. At this point, the air is dispersed into the surrounding environment with no ill or disturbing effects.
  • a ceiling mounted air intake fixture 60 that, if desired, by means of valving 77, can direct exhaust air flow through the duct system 62 to combine with the makeup air for the digesters 20 fed by rotary blowers 79.
  • a floor plan of a composting facility depicting operational features of the system is shown in Figure 4. Constructional details of a preferred channel construction used for retention of rough screened compost is shown in
  • Each channel or trough is constructed of a 8 inch (20.32 cm) thick x 84 inches (213.36 cm) high x 195 feet (59.44 meters) long reinforced concrete walls 80, each having a maximum compost storage area of 6 feet (1.83 meters) deep x 9 feet (2.77 meters, 10.16 cm) 4 inches wide x 180 feet (54.86 meters) long or 10,244 cubic feet (290.30 cubic meters) of capacity. Auto-loading of these channels is accomplished by using a tripslinger conveyor belt 81.
  • each trough is divided into individual treatment zones 82, as best seen in Figures 4 and 6, along its length. Each treatment zone occupies a length of approximately 25 feet.
  • the floor of each trough, Figure 5, is comprised of a composite of 9 inches (22.86 cm) of washed rock 84 overlaid by a geotextile fabric 86 which, in turn, is overlaid by a 3 inch (7.62 cm) washed gravel bed 88.
  • the dynamic channels can conveniently be equipped with a mechanical compost turner or robot not shown.
  • the robot can be programmed to turn over the compost in each channel or trough once per processing day.
  • the passing of the turner or robot causes the compost to move towards the discharge end of the channel approximately 12 1/2 feet (3.81 meters) per turning. This will move the
  • each dynamic channel is divided into five individually controlled aerated zones 82.
  • Each of the blowers 52 which feet the individual aeration zones is rated at 370 cfm (10.49 cubic meters per minute) at 6 inches (15.24 cm) of static pressure.
  • An underfloor pipe interconnects each blower to the end orifice of the in-place figure eight perforated plumbing 90.
  • Each of the blowers in turn is preconnect to its own electrical starter which is controlled by the programmable logic controller or motor control circuit .56. This PLC is then slaved to the computer 54.
  • each aerated segment of the dynamic channel has a temperature censor located in the channel wall at a height of three feet which is connected to the programmable logic controller for temperature monitoring of the compost in that segment of the channel.
  • the operator can then manipulate the blowers and the temperature via the computer 54.
  • Each of the segments will have a high temperature set point and a low temperature set point. When the temperature reaches the high set point, a blower will come on and will stay on until the temperature fails to the lower limit. This cycle will continue indefinitely as outlined above for each segment of the channel.
  • the computer 54 is then used to record the temperatures in each segment on regular intervals and to store this data for subsequent report writing and proof of meeting the process to further reduce pathogen
  • the air is covered from the aeration * building ceiling by means of a 10,000 cfm electric fan 102 to the make up area for the small (lhp, 400 cfm) (1 hp, 11.34 cubic meters per minute) blowers which supply air through the in-slab channels.
  • the channels are covered with a perforated grating upon which the compost is piled for further storage and curing. Air is blown through the channels and into the compost to insure that no anaerobic conditions appear. Compost is then stored here for a period of time as prescribed by local regulations. Satisfying these regulations, the compost is ready for a final screening and preparations for shipment. This final aeration step in the process creates much the same effect as the external soil filter in that it filters air prior to its being released into the atmosphere. Air used in the process building for the further curing of compost as just described is derived from an intake fixture and duct that
  • SUBSTITUTE SHEET draws off a portion of the building's preconditioned air for use in this process step.
  • the final screening utilizes a dual motion screen 104 ( Figure 2) .
  • the screen preferably comprises one or more concentric decks.
  • the first or inner deck includes a screen having relatively large holes for screening out larger granular materials.
  • the second or outer deck includes a screen having relatively smaller holes for screening out fine materials.
  • the two-stage deck screening system provides efficient material separation so as to produce a superior homogeneous product.
  • the compost is stored in a finished compost storage area 106. There is adequate space in this area to store the compost for an additional two weeks.
  • the entire air recovery/odor control system plays an important part in the overall process and produces benefits that are not realized in the use of nonpreconditioned air drawn from outside the plant. Its integral role in the process results in a highly energy efficient system, a superior end product and a process having little if any malodorous air effluents and having reduced pathogens.

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  • 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)

Abstract

Système de récupération d'air et d'élimination des odeurs comprenant une zone de déchargement (10), des digesteurs rotatifs (20), une zone de traitement (12) ainsi qu'une zone d'aération (14) destinées à être utilisées dans un processus de compostage. Ledit système récupère l'air dégagé produit par les opérations du processus de compostage afin de le réutiliser dans les étapes de compostage se produisant dans les digesteurs (20) ainsi que dans la zone d'aération (14) du système avant de libérer l'air dans l'atmosphère, de manière à désodoriser l'air, à améliorer l'efficacité de fonctionnement et à augmenter la capacité de destruction des germes pathogènes.
PCT/US1992/003130 1991-04-15 1992-04-13 Systeme de recuperation d'air WO1992018611A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68520391A 1991-04-15 1991-04-15
US685,203 1991-04-15

Publications (1)

Publication Number Publication Date
WO1992018611A1 true WO1992018611A1 (fr) 1992-10-29

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0599661A1 (fr) * 1992-11-26 1994-06-01 Hiroshi Shimizu Appareil de fermentation de déchets organiques
US5545560A (en) * 1993-06-15 1996-08-13 Chang; Dao-Pin Apparatus for composting and treating waste, particularly dung
EP0691316A3 (fr) * 1994-07-05 1996-10-30 Ml Entsorgungs Und Energieanla Procédé et appareil pour la décomposition des substances organiques
EP0771775A1 (fr) * 1995-11-01 1997-05-07 Vapo Oy Méthode logistique pour installation à compost et installation à compost correspondante
WO1997022842A3 (fr) * 1995-12-18 1997-08-14 Ml Entsorgungs Und Energieanla Procede et dispositif pour le sechage de dechets organiques
EP0706504A4 (fr) * 1994-05-02 1998-07-01 Bedminster Bioconversion Corp Systeme de traitement de compost
WO1999035107A3 (fr) * 1997-12-31 1999-10-07 Groupe Conporec Inc Procede et installation de compostage sans odeurs
WO2002060837A3 (fr) * 2001-01-31 2002-09-26 Pure Lean Hogs Inc Structure de compostage
WO2007098610A1 (fr) * 2006-03-02 2007-09-07 Conporec Inc. Appareil de compostage, installation et procédé associés
FR2915909A1 (fr) * 2007-05-11 2008-11-14 Thurot Philippe Jean Louis Installation de tri-compostage de dechets pour production de compost

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597725A (en) * 1923-06-13 1926-08-31 American Beccari Corp Process and apparatus for transforming organic matter
US3245759A (en) * 1960-05-17 1966-04-12 Internat Eweson Corp Apparatus for making organic fertilizer
US3364007A (en) * 1962-11-30 1968-01-16 Garbage Service Company Inc Method of composting waste materials
US3814588A (en) * 1972-05-10 1974-06-04 E Eweson Apparatus for making organic fertilizer
US3930799A (en) * 1972-10-05 1976-01-06 Eweson Eric W Apparatus for making organic fertilizer
US4062770A (en) * 1975-09-15 1977-12-13 Gebruder Weiss K.G. Method of and apparatus for digesting organic waste and/or sewage sludge
US4326874A (en) * 1978-03-13 1982-04-27 Buerklin Werner Process and apparatus for preparing compostable material
US4374804A (en) * 1980-08-07 1983-02-22 Easter Ii James M Controlled sludge composting system
US4586659A (en) * 1981-04-06 1986-05-06 Easter Ii James M Systemitized waste product separation and total utilization
DE4000510A1 (de) * 1989-01-12 1990-07-19 Werner Buerklin Verfahren und anlage zur behandlung von abfaellen
US5071075A (en) * 1988-07-18 1991-12-10 Wiens Thomas J Solid waste disposal

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597725A (en) * 1923-06-13 1926-08-31 American Beccari Corp Process and apparatus for transforming organic matter
US3245759A (en) * 1960-05-17 1966-04-12 Internat Eweson Corp Apparatus for making organic fertilizer
US3364007A (en) * 1962-11-30 1968-01-16 Garbage Service Company Inc Method of composting waste materials
US3814588A (en) * 1972-05-10 1974-06-04 E Eweson Apparatus for making organic fertilizer
US3930799A (en) * 1972-10-05 1976-01-06 Eweson Eric W Apparatus for making organic fertilizer
US4062770A (en) * 1975-09-15 1977-12-13 Gebruder Weiss K.G. Method of and apparatus for digesting organic waste and/or sewage sludge
US4326874A (en) * 1978-03-13 1982-04-27 Buerklin Werner Process and apparatus for preparing compostable material
US4374804A (en) * 1980-08-07 1983-02-22 Easter Ii James M Controlled sludge composting system
US4586659A (en) * 1981-04-06 1986-05-06 Easter Ii James M Systemitized waste product separation and total utilization
US5071075A (en) * 1988-07-18 1991-12-10 Wiens Thomas J Solid waste disposal
DE4000510A1 (de) * 1989-01-12 1990-07-19 Werner Buerklin Verfahren und anlage zur behandlung von abfaellen

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0599661A1 (fr) * 1992-11-26 1994-06-01 Hiroshi Shimizu Appareil de fermentation de déchets organiques
US5545560A (en) * 1993-06-15 1996-08-13 Chang; Dao-Pin Apparatus for composting and treating waste, particularly dung
EP0706504A4 (fr) * 1994-05-02 1998-07-01 Bedminster Bioconversion Corp Systeme de traitement de compost
EP0691316A3 (fr) * 1994-07-05 1996-10-30 Ml Entsorgungs Und Energieanla Procédé et appareil pour la décomposition des substances organiques
EP0771775A1 (fr) * 1995-11-01 1997-05-07 Vapo Oy Méthode logistique pour installation à compost et installation à compost correspondante
US5905039A (en) * 1995-11-01 1999-05-18 Vam Vapo Wastech Ltd Oy Logistic method in a tunnel-composting plant and a corresponding tunnel composting plant
WO1997022842A3 (fr) * 1995-12-18 1997-08-14 Ml Entsorgungs Und Energieanla Procede et dispositif pour le sechage de dechets organiques
WO1999035107A3 (fr) * 1997-12-31 1999-10-07 Groupe Conporec Inc Procede et installation de compostage sans odeurs
US6337203B1 (en) 1997-12-31 2002-01-08 Groupe Conporec, Inc. Odor-free composting method and installation
WO2002060837A3 (fr) * 2001-01-31 2002-09-26 Pure Lean Hogs Inc Structure de compostage
WO2007098610A1 (fr) * 2006-03-02 2007-09-07 Conporec Inc. Appareil de compostage, installation et procédé associés
FR2915909A1 (fr) * 2007-05-11 2008-11-14 Thurot Philippe Jean Louis Installation de tri-compostage de dechets pour production de compost

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