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
  • 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
• • 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
  • C05F17/907—Small-scale devices without mechanical means for feeding or discharging material, e.g. garden compost bins
• • 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
• • 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 incubation or mesophilic phase lasts for approximately 24 hours during which the organic matter is rapidly invaded by mesophilic composting organisms including bacteria, actinomycetes and fungi. These organisms thrive at a temperature of 25°-45°C.
• the mesophilic organisms grow in this phase on the more easily assimilated substances present in the organic waste, for example: sugars, soluble protein, starch and organic acids.
• the high metabolic activity of the organisms and the exothermic decomposition processes that result, in combination with the insulating properties of the composting material, causes the temperature to rise.
• the temperature rise strongly favours thermophilic sporogenous bacteria.
• the activity of these bacteria takes the process into the thermophilic phase. During the thermophilic phase, organic matter is decomposed rapidly.
• aeration means to aerate the mass of compostable material are to be included within the composting system.
• the aeration means may provide a variable controllable proportion of recycled process air and fresh air assisting in maintenance of the compostable mass moisture at desired levels importantly preventing drying out of compost, and may provide oxygen levels within the mass of 10-18% by volume.
• the weatherproof cover may be sealed at its edge by a low cost sealing means such as sandbags, soil, a water jacket, beams rods or other means. It is important that the sealing be achieved in a manner that enables effective control over the microenvironment within the weatherproof cover. Space may be at a premium.
• the system is ideally designed to exclude climatic influences over the composting process, chiefly drying influences and excess rainfall which may base excess moisture and leachate generation or prolonged hot and dry conditions which may dry the compost to a point where microbiological activity ceases.
• the system is also advantageously flexible to suit variation in the mass of material to be treated and sealing means may be selected with this in view.
• the edge 8 of the cover is sealed against ingress of water and escape of odour by a water jacket 9 above the edge 8 of the cover preferably forming an air-tight seal for the latter purpose.
• the volume of water imposes sufficient force to maintain a seal, though other means for achieving a seal may of course be adopted.
• sufficiently heavy objects such as beams, rods, sandbags or soil may be laid in the gutter 6 to achieve the same end.
• sealing may be achieved by straps extending over the cover 7 and surface area to enable securement and sealing.
• Simple sealing means facilitate the conformance of the composting environment to varying volumes of compostable material contributing to system flexibility.
• the ARMCANZ guidelines require composting to be carried out at thermophilic temperatures (> 55°C) for at least three continuous days to produce grade 1A compost.
• the ARMCANZ grade 1A composting requirements were met throughout the windrow using the method and system of the invention, including at the windrow surface.
• thermophilic stage may be extended by including "thermophilic" amendments such as sawdust or wastewater skimmings to the compost.
• thermal such as sawdust or wastewater skimmings to the compost.
• skimmings, chaff or materials providing more energy per mole of carbon than sawdust may be preferred as an amendment though sawdust may be used.
• the lipid content of skimmings is a factor in providing a higher energy output.

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)
• Fertilizers (AREA)
• Processing Of Solid Wastes (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=3791191

Family Applications (1)

Country Status (9)

Cited By (8)

Families Citing this family (20)

Citations (7)

Family Cites Families (19)

• 1995
  • 1995-11-29 AU AUPN6869A patent/AUPN686995A0/en not_active Abandoned
• 1996
  • 1996-11-29 JP JP52001297A patent/JP2000500429A/ja not_active Ceased
  • 1996-11-29 WO PCT/AU1996/000771 patent/WO1997019901A1/en not_active Ceased
  • 1996-11-29 DE DE1996632960 patent/DE69632960T2/de not_active Expired - Lifetime
  • 1996-11-29 AU AU76857/96A patent/AU712674B2/en not_active Expired
  • 1996-11-29 DK DK96939753T patent/DK0863856T3/da active
  • 1996-11-29 ES ES96939753T patent/ES2225899T3/es not_active Expired - Lifetime
  • 1996-11-29 US US09/077,530 patent/US6399359B1/en not_active Expired - Fee Related
  • 1996-11-29 EP EP96939753A patent/EP0863856B1/en not_active Expired - Lifetime
  • 1996-11-29 CN CN96198653A patent/CN1104400C/zh not_active Expired - Fee Related

Patent Citations (7)

Non-Patent Citations (1)

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