FR2893612A1 - Method for composting organic waste arranged in windrows, comprises placing the organic waste in the windrows, and covering the windrows by a layer having a mature compost and an adjuvant group of organic and inorganic material - Google Patents
Method for composting organic waste arranged in windrows, comprises placing the organic waste in the windrows, and covering the windrows by a layer having a mature compost and an adjuvant group of organic and inorganic material Download PDFInfo
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- FR2893612A1 FR2893612A1 FR0511907A FR0511907A FR2893612A1 FR 2893612 A1 FR2893612 A1 FR 2893612A1 FR 0511907 A FR0511907 A FR 0511907A FR 0511907 A FR0511907 A FR 0511907A FR 2893612 A1 FR2893612 A1 FR 2893612A1
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- 238000009264 composting Methods 0.000 title claims abstract description 33
- 239000002361 compost Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000010815 organic waste Substances 0.000 title claims abstract description 14
- 239000011368 organic material Substances 0.000 title claims abstract description 11
- 239000002671 adjuvant Substances 0.000 title claims abstract description 10
- 229910010272 inorganic material Inorganic materials 0.000 title claims abstract description 7
- 239000011147 inorganic material Substances 0.000 title claims abstract description 7
- 239000002023 wood Substances 0.000 claims abstract description 7
- 239000003415 peat Substances 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract description 5
- 239000010457 zeolite Substances 0.000 claims abstract description 5
- 230000003750 conditioning effect Effects 0.000 claims abstract description 4
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims abstract description 3
- 239000002956 ash Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 25
- 239000002699 waste material Substances 0.000 claims description 21
- 239000002893 slag Substances 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- 238000001033 granulometry Methods 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 9
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 7
- 238000000855 fermentation Methods 0.000 description 6
- 230000004151 fermentation Effects 0.000 description 6
- 239000012855 volatile organic compound Substances 0.000 description 6
- 238000009269 windrow composting Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 4
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 4
- 235000019645 odor Nutrition 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000010803 wood ash Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- -1 bark Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 235000015111 chews Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 244000062645 predators Species 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
-
- 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
-
- 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
- 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
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- Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Procédé de compostage de déchets organiques disposés en andains comprenantMethod of composting organic waste arranged in swaths comprising
une étape de recouvrement des andains. Le domaine de l'invention est celui du traitement des déchets. Plus précisément, l'invention concerne un procédé de compostage de déchets organiques tels que les déchets verts, les boues, les biodéchets, les ordures ménagères résiduelles (OMR), les effluents d'élevage... On rappelle que le compostage est un procédé biologique assurant la décomposition des constituants organiques des sous-produits et déchets, dans des conditions aérobies, en un produit organique stable riche en composés humiques : le compost On désigne par matière organique stable une matière organique ayant un potentiel de biodégradabilité faible similaire à l'humus du sol tel que le compost mûr. Le compostage débute par une phase de fermentation consistant en une phase de dégradation biologique intense. C'est une phase d'intense activité microbienne. Les réactions de dégradations de la matière organique sont exothermiques et produisent donc de la chaleur. Dans la pratique, la dégradation de la matière organique au cours du compostage émet des molécules gazeuses odorantes et/ou des molécules gazeuses contribuant au réchauffement de la planète (gaz à effet de serre) Ces émissions gazeuses peuvent être limitées par des traitements appropriés (biofiltre, tour de lavage,...) à condition de pouvoir capter tous les gaz émis au cours du compostage. Cela est envisageable dans le cas du compostage en réacteur fermé, ou en andain avec aspiration de l'air. Par contre, dans le cas du compostage en andain à ciel ouvert avec aération par insufflation, le captage des gaz n'est pas possible, et l'abattement des gaz émis lors du processus du compostage est donc difficile. Plusieurs techniques ont été proposées par l'art antérieur pour tenter de réduire la formation des molécules odorantes au cours du compostage. a windrow recovery step. The field of the invention is that of waste treatment. More specifically, the invention relates to a method of composting organic waste such as green waste, sludge, biowaste, residual household waste (OMR), livestock effluents ... It is recalled that composting is a process Biological decomposition of organic constituents of by-products and wastes, under aerobic conditions, into a stable organic product rich in humic compounds: compost A stable organic material is an organic material with a low biodegradability potential similar to Soil humus such as ripe compost. Composting begins with a fermentation phase consisting of a phase of intense biological degradation. It is a phase of intense microbial activity. Degradation reactions of organic matter are exothermic and therefore produce heat. In practice, the degradation of organic matter during composting emits odorous gas molecules and / or gaseous molecules that contribute to global warming (greenhouse gases). These gaseous emissions can be limited by appropriate treatments (biofilter , washing tower, ...) provided you can capture all the gases emitted during composting. This is possible in the case of composting in a closed reactor, or windrow with air suction. On the other hand, in the case of windrow composting with aeration by insufflation, gas capture is not possible, and the reduction of gases emitted during the composting process is therefore difficult. Several techniques have been proposed by the prior art to try to reduce the formation of odorous molecules during composting.
Il a notamment été proposé d'utiliser du compost mûr en couverture d'andains pour limiter les émissions de certaines odeurs. Toutefois, une telle technique ne permet d'éliminer qu'un spectre limité de molécules odorantes. En particulier, cette technique ne permet pas de neutraliser efficacement les molécules d'hydrogène sulfuré (H2S), sources d'odeurs particulièrement nauséabondes. L'invention a notamment pour objectif de pallier les inconvénients et/ou insuffisances de l'art antérieur. Plus précisément, l'invention a pour objectif de proposer une technique de compostage en andains qui permette d'éliminer un spectre plus large de molécules gazeuses (odorantes et/ou a effet de serre) émises lors du compostage comparée aux solutions de l'art antérieur. L'invention a pour objectif de proposer une technique de compostage en andains qui permette d'envisager une diminution de la durée de la phase de fermentation. L'invention a aussi pour objectif de fournir une telle technique qui soit simple de conception et facile à mettre en oeuvre. Ces objectifs ainsi que d'autres qui apparaîtront par la suite, sont atteints grâce à l'invention qui a pour objet un procédé de compostage de déchets organiques, du type comprenant une étape de mise en au moins un andain desdits déchets organiques, caractérisé en ce qu'il comprend au moins une étape de recouvrement dudit ou desdits andains par au moins une couche comprenant au moins deux matériaux dont un premier matériau est du compost mûr, et le deuxième matériau étant un adjuvant appartenant au groupe suivant : matériau organique distinct dudit compost mûr ; matériau inorganique. Ainsi, la combinaison de la couche de compost avec un autre produit organique et/ou inorganique permet d'éliminer un spectre plus large de molécules gazeuses émises lors du compostage. In particular, it has been proposed to use mature compost in windrow cover to limit emissions of certain odors. However, such a technique can eliminate only a limited spectrum of odor molecules. In particular, this technique does not effectively neutralize the hydrogen sulfide molecules (H2S), sources of particularly nauseating odors. The invention particularly aims to overcome the disadvantages and / or shortcomings of the prior art. More specifically, the invention aims to propose a windrow composting technique which makes it possible to eliminate a wider spectrum of gaseous molecules (odorous and / or greenhouse) emitted during composting compared to the solutions of the art. prior. The invention aims to propose a composting technique in windrows that allows to consider a decrease in the duration of the fermentation phase. The invention also aims to provide such a technique that is simple in design and easy to implement. These objectives and others which will appear later, are achieved thanks to the invention which has for object a method of composting organic waste, of the type comprising a step of placing at least one swath of said organic waste, characterized in it comprises at least one step of covering said windrow (s) with at least one layer comprising at least two materials of which a first material is mature compost, and the second material being an adjuvant belonging to the following group: organic material distinct from said mature compost; inorganic material. Thus, the combination of the compost layer with another organic and / or inorganic product makes it possible to eliminate a wider spectrum of gaseous molecules emitted during composting.
De plus, un procédé selon l'invention conduit à une homogénéisation des conditions de traitements biologiques de déchets qui induit une homogénéisation des conditions de dégradation de la matière organique et une diminution de la durée de la phase de fermentation. Ceci se traduit également par une maîtrise du procédé de compostage des déchets organiques, et d'hygiénisation du compost produit. Par ailleurs, le recours à une couche d'un mélange comprenant du compost mûr permet de : -protéger les andains contre l'attaque des prédateurs ; limiter les envols de sacs plastiques dans un andain de compost de déchets; isoler thermiquement un andain de compostage et améliorer ainsi l'abattement des germes pathogènes. Préférentiellement, ladite étape de recouvrement est réalisée de façon que ladite couche présente au moins partiellement une épaisseur comprise entre environ 10 et environ 100 cm, de préférence entre environ 25 et environ 60 cm. Selon une solution avantageuse, ladite couche comprend entre environ 2% et environ 80% dudit deuxième matériau. On note que les proportions de mélange des différents types de matériaux peut varier en fonction : des propriétés d'élimination du matériau ; - du type des déchets compostés ; - de la taille des andains ; du débit de l'aération. Avantageusement, ledit premier matériau présente une granulométrie comprise entre environ 8 mm et environ 50 mm. Préférentiellement, ledit deuxième matériau comprend l'un au moins des composants organiques et/ou inorganiques suivants : bois broyés ; écorces ; - tourbe ; cendres de bois ; zéolites ; mâchefers ; coquillages ; pouzzolane. On augmente ainsi la surface d'échange du premier matériau avec les molécules gazeuses émises par l'andain, ce qui optimise l'effet sur ces molécules. Selon une solution avantageuse, le procédé comprend une étape de conditionnement dudit deuxième matériau préalablement à ladite étape de recouvrement. On facilite de cette façon la séparation du deuxième matériau du reste de l'andain, en particulier s'agissant des matières inorganiques. Préférentiellement, le procédé comprend une étape de récupération dudit deuxième matériau de façon séparée desdits déchets après leur compostage. Dans ce cas, ladite étape de récupération est avantageusement réalisée par criblage à l'aide d'un trommel. D'autres techniques de séparation peuvent être mises en oeuvre selon d'autres mode de réalisation envisageables. In addition, a process according to the invention leads to a homogenization of the conditions of biological treatments of waste which induces a homogenization of the degradation conditions of the organic matter and a decrease in the duration of the fermentation phase. This also translates into a control of the process of composting organic waste, and hygienization of compost produced. In addition, the use of a layer of a mixture comprising mature compost makes it possible to: -protect windrows against the attack of predators; limit the flight of plastic bags in a windrow of compost waste; thermally isolating a composting swath and thus improving the reduction of pathogenic germs. Preferably, said covering step is performed so that said layer has at least partially a thickness of between about 10 and about 100 cm, preferably between about 25 and about 60 cm. According to an advantageous solution, said layer comprises between about 2% and about 80% of said second material. It is noted that the mixing proportions of the different types of materials can vary depending on: the properties of removal of the material; - the type of composted waste; - the size of the windrows; the flow of the aeration. Advantageously, said first material has a particle size of between about 8 mm and about 50 mm. Preferably, said second material comprises at least one of the following organic and / or inorganic components: milled wood; bark; - peat; ashes of wood; zeolites; slag; shells; pozzolan. This increases the exchange surface of the first material with the gas molecules emitted by the swath, which optimizes the effect on these molecules. According to an advantageous solution, the method comprises a step of conditioning said second material prior to said covering step. In this way, the separation of the second material from the remainder of the windrow is facilitated, in particular with regard to the inorganic materials. Preferably, the method comprises a step of recovering said second material separately from said waste after composting. In this case, said recovery step is advantageously performed by screening with a trommel. Other separation techniques may be implemented according to other possible embodiments.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante d'un mode de réalisation préférentiel de l'invention, donné à titre d'exemple illustratif et non limitatif, et des dessins annexés parmi lesquels : la figure 1 est une vue schématique d'un andain de compostage de déchets pendant la phase de fermentation, sans couche de recouvrement ; la figure 2 est une vue schématique d'un andain de compostage de déchets pendant la phase de fermentation, avec une couche de recouvrement selon l'invention. En référence à la figure 1, un andain 1 de déchets à composter tend à émettre, au cours de la phase de fermentation, des gaz dus notamment à : 4 des composés organiques volatiles (COV) ; - des acides gras volatiles (AGV) ; - des molécules d'hydrogène sulfuré (H2S) ; des molécules d'ammoniac (NH3). Other characteristics and advantages of the invention will emerge more clearly on reading the following description of a preferred embodiment of the invention, given by way of illustrative and nonlimiting example, and the appended drawings among which: Figure 1 is a schematic view of a windrow composting waste during the fermentation phase, without cover layer; Figure 2 is a schematic view of a windrow composting waste during the fermentation phase, with a cover layer according to the invention. With reference to FIG. 1, a swath 1 of composting waste tends to emit, during the fermentation phase, gases due in particular to: 4 volatile organic compounds (VOCs); volatile fatty acids (VFA); - hydrogen sulfide molecules (H2S); ammonia molecules (NH3).
Le principe de l'invention consiste à recouvrir les andains d'une couche d'un mélange permettant l'élimination des molécules odorantes et des gaz à effet de serre (ex : AGV, H2S, COV, NH3, CH4, ...) émis lors du compostage par neutralisation, absorption, précipitation et oxydation selon les propriétés des matériaux utilisés. The principle of the invention consists in covering the windrows with a layer of a mixture allowing the elimination of odor molecules and greenhouse gases (eg AGV, H2S, VOC, NH3, CH4, ...) emitted during composting by neutralization, absorption, precipitation and oxidation according to the properties of the materials used.
Ceci est illustré par la figure 2 qui montre un andain 1 recouvert d'une couche 2 comprenant, un mélange de deux matériaux : une matière organique stabilisée (ou compost mûr) criblée finement, tel que du compost de déchets verts, du compost de boues, du compost de biodéchets, du compost d'OMR, et d'autres types de composts ; un deuxième matériau organique (différent du compost mûr) tel que du bois broyé, des écorces, de la tourbe, des cendres de bois... ou inorganique, naturel ou synthétique, tels que des sous-produits de l'incinération de déchets non toxiques, des mâchefers, des zéolites, de la pouzzolane, des coquillages, voire un mélange de plusieurs de ces matériaux. Le compost mûr présente les caractéristiques suivantes : - stabilité : Rottegrad > IV ; granulométrie/maille de criblage : 8-50 mm L'épaisseur de la couche 2 varie en fonction de la taille de l'andain, en 25 étant optimale à 30 cm. Exemple : Selon un mode de réalisation particulier, on ajoute une couche de compost mûr criblé finement mélangée avec des mâchefers sur un andain de compostage de déchets avec aération forcée par insufflation. Le compost stabilisé permet de piéger le NH3 (ammoniac) et de le transformer 30 en acide nitrique. La combinaison du compost avec 10 à 20 % de mâchefers (pourcentage variable selon la nature des mâchefers) permet en plus d'absorber les H2S (hydrogène sulfuré) et les COV (composés organiques volatiles) et de neutraliser les AGV (acides gras volatiles). Le pourcentage de mâchefers (10-20 % = ratio de mélange optimal) est calculé pour un andain de compostage de boues (2,5 m x 6 m x 30 m), couvert par une couche de compost + mâchefers de 30 cm d'épaisseur. Plus généralement, la couche 2 peut comprendre un mélange des produits listés dans le tableau ci-après, celui-ci indiquant pour chacun le procédé d'abattement des gaz émis et, en dernière ligne, le type de gaz éliminé. Propriétés Adsorbant Base Précipitation Destruction Types avec des métaux biologique des Produits um Compost x x a Cendres de bois x x Charbon actif x Tourbe x x Ecorce x x Zéolites x x x - Mâchefers x x x 0 Coquillage x Pouzzolane x Type de gaz éliminé COV AGV H2S NH3 Ethyle et H2S CH4 Méthyle Mercaptan Préférentiellement, la couche 2 comprend entre 2 % et 80 % du deuxième matériau. Lorsque le second matériau utilisé est d'origine inorganique, le procédé selon l'invention prévoit de le séparer du compost. Le procédé utilisé pour ce faire est un criblage soit par trommel soit par autre système de séparation.15 This is illustrated in Figure 2 which shows a windrow 1 covered with a layer 2 comprising a mixture of two materials: a stabilized organic matter (or compost mature) finely screened, such as green waste compost, compost sludge , biowaste compost, OMR compost, and other types of compost; a second organic material (different from ripe compost) such as crushed wood, bark, peat, wood ash ... or inorganic, natural or synthetic, such as by-products of the incineration of non-organic waste toxic substances, slags, zeolites, pozzolana, shellfish, or even a mixture of several of these materials. Mature compost has the following characteristics: - stability: Rottegrad> IV; granulometry / screening mesh: 8-50 mm The thickness of layer 2 varies according to the size of the windrow, being optimal at 30 cm. Example: According to a particular embodiment, a layer of ripe compost screened finely mixed with slag on a windrow composting waste with forced aeration by insufflation. Stabilized compost is used to trap NH3 (ammonia) and convert it to nitric acid. The combination of the compost with 10 to 20% of bottom ash (variable percentage according to the nature of the slag) allows in addition to absorb the H2S (hydrogen sulfide) and the VOC (volatile organic compounds) and to neutralize the AGV (volatile fatty acids) . The percentage of slag (10-20% = optimal mixing ratio) is calculated for a windrow composting sludge (2.5m x 6m x 30m), covered by a layer of compost + slag 30 cm thick. More generally, layer 2 may comprise a mixture of the products listed in the table below, which indicates for each the method of abatement of the gases emitted and, in the last line, the type of gas removed. Properties Adsorbent Base Precipitation Destruction Types with biological metals Products um Compost xxa Wood ash xx Activated carbon x Peat xx Bark xx Zeolites xxx - Chews xxx 0 Shell x Pozzolan x Type of gas removed VOC AGV H2S NH3 Ethyl and H2S CH4 Methyl Mercaptan Preferentially, the layer 2 comprises between 2% and 80% of the second material. When the second material used is of inorganic origin, the method according to the invention provides for separating it from the compost. The method used for this purpose is a screening either by trommel or by another separation system.
Claims (9)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0511907A FR2893612B1 (en) | 2005-11-24 | 2005-11-24 | METHOD FOR COMPOSTING ORGANIC WASTE DISPOSALS IN ANDAINS COMPRISING A STEP FOR RECOVERING ANDAINS |
| PCT/EP2006/068774 WO2007060183A2 (en) | 2005-11-24 | 2006-11-22 | Method for composting organic waste arranged in windrows including a step of covering the windrows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0511907A FR2893612B1 (en) | 2005-11-24 | 2005-11-24 | METHOD FOR COMPOSTING ORGANIC WASTE DISPOSALS IN ANDAINS COMPRISING A STEP FOR RECOVERING ANDAINS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2893612A1 true FR2893612A1 (en) | 2007-05-25 |
| FR2893612B1 FR2893612B1 (en) | 2008-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0511907A Active FR2893612B1 (en) | 2005-11-24 | 2005-11-24 | METHOD FOR COMPOSTING ORGANIC WASTE DISPOSALS IN ANDAINS COMPRISING A STEP FOR RECOVERING ANDAINS |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2893612B1 (en) |
| WO (1) | WO2007060183A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011152997A1 (en) * | 2010-06-01 | 2011-12-08 | Harvest Power, Inc. | Unturned covered aerated pile composting system and method |
| EP2647614A1 (en) * | 2012-04-05 | 2013-10-09 | Marcel Léon Mezy | Method for preparing activated plant complexes and plant/organic matter complexes that are doped or overdoped, carbonated, and the uses thereof in particular in anaerobic digestion or biogas production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29811063U1 (en) * | 1998-06-23 | 1998-10-08 | A & S Haecksel Und Kompostieru | Biofilter for landfill site |
| AU701210B1 (en) * | 1998-02-02 | 1999-01-21 | Faber Recycling Gmbh | Mechanical-biological treatment of residual waste |
| US20020088750A1 (en) * | 2000-11-28 | 2002-07-11 | Karl-Wilhelm Faber | Rotting assembly with adsorbent sheet |
| DE10148524A1 (en) * | 2000-10-06 | 2002-08-01 | Georg Stefan Husz | Preventing undesirable emissions from a compost heap comprises covering the heap with a layer of porous material |
-
2005
- 2005-11-24 FR FR0511907A patent/FR2893612B1/en active Active
-
2006
- 2006-11-22 WO PCT/EP2006/068774 patent/WO2007060183A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU701210B1 (en) * | 1998-02-02 | 1999-01-21 | Faber Recycling Gmbh | Mechanical-biological treatment of residual waste |
| DE29811063U1 (en) * | 1998-06-23 | 1998-10-08 | A & S Haecksel Und Kompostieru | Biofilter for landfill site |
| DE10148524A1 (en) * | 2000-10-06 | 2002-08-01 | Georg Stefan Husz | Preventing undesirable emissions from a compost heap comprises covering the heap with a layer of porous material |
| US20020088750A1 (en) * | 2000-11-28 | 2002-07-11 | Karl-Wilhelm Faber | Rotting assembly with adsorbent sheet |
Non-Patent Citations (1)
| Title |
|---|
| LUO ET AL: "The use of pine bark and natural zeolite as biofilter media to remove animal rendering process odours", BIORESOURCE TECHNOLOGY, ELSEVIER, GB, vol. 97, no. 13, 24 August 2005 (2005-08-24), pages 1461 - 1469, XP005456166, ISSN: 0960-8524 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011152997A1 (en) * | 2010-06-01 | 2011-12-08 | Harvest Power, Inc. | Unturned covered aerated pile composting system and method |
| EP2647614A1 (en) * | 2012-04-05 | 2013-10-09 | Marcel Léon Mezy | Method for preparing activated plant complexes and plant/organic matter complexes that are doped or overdoped, carbonated, and the uses thereof in particular in anaerobic digestion or biogas production |
| WO2013150355A1 (en) * | 2012-04-05 | 2013-10-10 | Mezy Marcel Leon | Process for preparing activated plant complexes and plant/organic matter complexes that are doped or overdoped, and carbonated, and the applications thereof in particular in methanization or manufacture of biogas |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007060183A8 (en) | 2008-03-20 |
| WO2007060183A2 (en) | 2007-05-31 |
| FR2893612B1 (en) | 2008-05-09 |
| WO2007060183A3 (en) | 2007-08-16 |
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