WO2002051772A1 - Procede de compostage de la biomasse et de la boue industrielle, et produits obtenus selon ce procede - Google Patents

Procede de compostage de la biomasse et de la boue industrielle, et produits obtenus selon ce procede Download PDF

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Publication number
WO2002051772A1
WO2002051772A1 PCT/NO2001/000474 NO0100474W WO02051772A1 WO 2002051772 A1 WO2002051772 A1 WO 2002051772A1 NO 0100474 W NO0100474 W NO 0100474W WO 02051772 A1 WO02051772 A1 WO 02051772A1
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WO
WIPO (PCT)
Prior art keywords
compost
lime
formation
mass
value
Prior art date
Application number
PCT/NO2001/000474
Other languages
English (en)
Inventor
Jan Petter Hammer
Pål SMITS
Original Assignee
Lindum Ressurs Og Gjenvinning
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 Lindum Ressurs Og Gjenvinning filed Critical Lindum Ressurs Og Gjenvinning
Publication of WO2002051772A1 publication Critical patent/WO2002051772A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D3/00—Calcareous fertilisers
    • C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • 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 application concerns a method for forming compost of biomass and industrial sludge.
  • micro organisms have a characteristically optimal growth temperature, where they reproduces and grow most rapidly. Micro organisms also have a minimal growth temperature under which they become metabolically inactive. Temperature is the basic factor, which influences the reaction rate in chemical and biochemical reactions. In general the enzymatic activity of the micro organisms doubles for every 10 °C - increase in temperature, up to a limit where the enzyme becomes inactive.
  • a well-organised compost formation system is heated to 40-50 °C, on two to three days. Most of the large scale compost formation systems use three to five days to be heated to 60-70 °C. Several tests have shown that the microbial activity diminishes when the temperature exceeds 60 °C. It is natural that the heat production decreases, when easily degradable compounds become less accessible, in well isolated compost formation systems, high temperatures would nevertheless could be maintained for a longer period of time.
  • Compost formation is defined as aerobic degradation of organic material, and can be disclosed by the following reaction :
  • the compost formation process does comprise several aerobic and anaerobic processes, which go on at the same time. Shortlived lack of oxygen in compost finds place in both macro and micro pores, and this does involve temporarily production of short-chained fatty acids. These organic acids have a strong smell, but simultaneously they are easily degradable and function as a high energy source for aerobic micro organisms.
  • US Patent No. 5,252,116 describes a process for treatment of disposal sludge (sewage sludge), wherein it is used lime, fly ash, cement kiln dust and surfactants.
  • disposal sludge sewage sludge
  • This patent distinguishes, however from the present invention in several aspects. Firstly the end product, which is achieved according to this patent is a dry granulate without any biological activity. Further also the starting materials, which are treated are very different.
  • the present invention provides a solution to the above mentioned problems.
  • the process, according to the present invention involves that the compost formation process is speeded up, is relatively free of smell, is economic and reduces the corrosion problems in the plants.
  • the present invention comprises a method for compost formation of wet organic disposal and industrial sludge, which is characterised in that the mass is pre treated by hygienic treatment, comprising milling and mixing with an additive, which cause the pH-value to be brought to the range 8-14, and thereafter is added (inoculated) new micro organisms of other strains by the means of addition of the structure forming agent bark, whereby the mass is mixed and pre compost formed in a reactor plant, or is spread for tendril compost formation.
  • the additive which causes that the pH
  • the additive is lime, CaO or
  • the pH-value in the pre treatment is in the range 10-12. Preferably it is about 12.
  • Another further preferred embodiment of the invention comprises that the. addition of the oxide or the carbonate of the alkaline- or alkaline earth metal is carried out in a simple closed pre treatment plant.
  • the present invention is used a slightly acidic bark as the * structure forming agent.
  • the present invention further achieves a mass for the use in the above mentioned method, which is characterised in the following composition :
  • Another aspect of the present invention comprises a product, characterised in that it is produced by means of a method as it is defined in the patent claims. It has been known since the Roman time that lime can be used to kill bacteria. Further lime has in centuries been used in connection with burial of bodies. It would therefore be obvious to suppose that addition of lime to a compost forming mass would kill necessary bacteria and with that counteract the compost forming process. Use of lime has either not, hitherto known, existed in compost forming plants for hygienic treatment of biological waste products. In the present invention it is essential that the mass is hygienic treated or stabilised by addition of an additive, such as lime, on an early stage, so that the formation of for example acids is effectively prevented or strongly reduced.
  • an additive such as lime
  • the compost formation is rapid.
  • an industrial sludge it is for example achieved a rat degree 4 during 10 days and nights.
  • the rat degree is a designation on a method, which is used in order to judge the stability of the compost.
  • the principle of this method is to measure the temperature increase in samples, which are standardised with regard to moisture and porosity when the sample is placed in a thermos flask.
  • the short compost formation time involves that the capacity can be doubled in a plant, which uses biomass/-structure in the ratio 1.1.
  • the VOC-measurements were carried out by the use of so called Tenax tubes, these are tubes which have adsorption layers on the inside.
  • the gas to be measured can either be sucked through the tube (active measurement), with a manual pump which states exactly volume, or the gas can diffuse passively into the tube. It was chosen active measurement and the samples were analysed by NILU (Norwegian Institute for Air Research).
  • the percentage reduction in TVOC after lime addition for measurement after scrubber was 82,1%, whereas the in the measurement after the bio filter was an increase of 169%.
  • the end product showed relatively high stability (rat degree 4) after 13 and 25 days. Relative plant tolerance was good for the lime compost already after 25 days, but not for the compost without lime. It is not certain how long compost without addition of lime will have to be composted afterwards, before it fulfils the desired quality. On the basis of these results it is clear that the compost formation of sludge containing antibiotics is completely possible with the mentioned technology. The introduction of lime has a pronounced positive influence on the degradation of antibiotics and on the quality of the end product with regard to plant tolerance. These are results which are very surprising, in light of the present prior art.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Fertilizers (AREA)

Abstract

L'invention porte sur un procédé appliqué dans la formation de compost de la biomasse et de boues industrielles. Ce procédé se caractérise en ce que la masse est prétraitée par un traitement hygiénique et en ce qu'il consiste à la broyer et la mélanger à un additif qui augmente la valeur du pH du mélange, et à ajouter ensuite de nouveaux micro-organismes d'autres souches, par l'ajout d'un ou plusieurs agents formant une structure, la masse étant ensuite mélangée et un précompost formé dans un réacteur ou est étalée pour former un compost de vrilles.
PCT/NO2001/000474 2000-12-01 2001-11-28 Procede de compostage de la biomasse et de la boue industrielle, et produits obtenus selon ce procede WO2002051772A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20006143A NO20006143L (no) 2000-12-01 2000-12-01 Fremgangsmåte ved kompostering av biomasse og industrislam
NO20006143 2000-12-01

Publications (1)

Publication Number Publication Date
WO2002051772A1 true WO2002051772A1 (fr) 2002-07-04

Family

ID=19911866

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2001/000474 WO2002051772A1 (fr) 2000-12-01 2001-11-28 Procede de compostage de la biomasse et de la boue industrielle, et produits obtenus selon ce procede

Country Status (2)

Country Link
NO (1) NO20006143L (fr)
WO (1) WO2002051772A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927486A1 (de) * 1989-08-19 1991-02-21 Omya Gmbh Verfahren zur verarbeitung von fluessigmist (bzw. schwemmist bzw. guelle) zu einem biologischen duengemittel
EP0489158A1 (fr) * 1988-09-27 1992-06-10 INOUE, Satoshi Procede et appareil pour fabriquer un engrais organique
GB2276876A (en) * 1993-03-24 1994-10-12 Energy & Waste Systems Ltd Process for treatment of sewage sludge
JPH0940483A (ja) * 1995-07-24 1997-02-10 Akira Takashima 家畜糞尿から生成する土壌改良材及びその製造方法
US5630944A (en) * 1992-06-10 1997-05-20 Terblanche; Johannes S. Treatment of sewage sludge
US5685891A (en) * 1995-11-17 1997-11-11 Helsinki University Licensing, Ltd. Composting methods
JPH11343188A (ja) * 1998-05-29 1999-12-14 Nichiha Corp 堆肥の製造方法
JP2000044373A (ja) * 1998-07-28 2000-02-15 Sougo Akita 石灰を使用して、有機性廃棄物と混合撹拌した後、圧力混合撹拌機によって、臭気の少ない肥料を作り出す装置並びにその製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0489158A1 (fr) * 1988-09-27 1992-06-10 INOUE, Satoshi Procede et appareil pour fabriquer un engrais organique
DE3927486A1 (de) * 1989-08-19 1991-02-21 Omya Gmbh Verfahren zur verarbeitung von fluessigmist (bzw. schwemmist bzw. guelle) zu einem biologischen duengemittel
US5630944A (en) * 1992-06-10 1997-05-20 Terblanche; Johannes S. Treatment of sewage sludge
GB2276876A (en) * 1993-03-24 1994-10-12 Energy & Waste Systems Ltd Process for treatment of sewage sludge
JPH0940483A (ja) * 1995-07-24 1997-02-10 Akira Takashima 家畜糞尿から生成する土壌改良材及びその製造方法
US5685891A (en) * 1995-11-17 1997-11-11 Helsinki University Licensing, Ltd. Composting methods
JPH11343188A (ja) * 1998-05-29 1999-12-14 Nichiha Corp 堆肥の製造方法
JP2000044373A (ja) * 1998-07-28 2000-02-15 Sougo Akita 石灰を使用して、有機性廃棄物と混合撹拌した後、圧力混合撹拌機によって、臭気の少ない肥料を作り出す装置並びにその製造方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199716, Derwent World Patents Index; AN 1997-175543 *
PATENT ABSTRACTS OF JAPAN *

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Publication number Publication date
NO20006143L (no) 2002-06-03
NO20006143D0 (no) 2000-12-01

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