EP1416241A2 - Apparatus for drying sludges - Google Patents

Apparatus for drying sludges Download PDF

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Publication number
EP1416241A2
EP1416241A2 EP03024812A EP03024812A EP1416241A2 EP 1416241 A2 EP1416241 A2 EP 1416241A2 EP 03024812 A EP03024812 A EP 03024812A EP 03024812 A EP03024812 A EP 03024812A EP 1416241 A2 EP1416241 A2 EP 1416241A2
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EP
European Patent Office
Prior art keywords
building
sludge
floor
water
drying
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Withdrawn
Application number
EP03024812A
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German (de)
French (fr)
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EP1416241A3 (en
Inventor
Siegbert Bullermann
Josef Abeling
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PAL-Bullermann GmbH
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PAL-Bullermann GmbH
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Publication date
Application filed by PAL-Bullermann GmbH filed Critical PAL-Bullermann GmbH
Publication of EP1416241A2 publication Critical patent/EP1416241A2/en
Publication of EP1416241A3 publication Critical patent/EP1416241A3/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/08—Parts thereof
    • F26B25/10—Floors, roofs, or bottoms; False bottoms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

Definitions

  • the invention relates to a device and a method for drying Sludges.
  • These sludges can also be which may have been contaminated (e.g. manure, manure) or which are also in the liquid components contain other solid components (e.g. straw manure).
  • the object of the invention is to provide a sludge drying, which avoids previous disadvantages and a sufficiently effective drying performance provides.
  • the object of the method for drying sludge according to the invention is with the features of claim 1 or with the features of Sludge dryer solved according to claim 2.
  • a building is a central component of the evaporator.
  • the building forms a floor heating as well as a cooling mechanism is installed, the central role.
  • the floor heating turns the water in the sludge to evaporate brought and by means of the cooling mechanism ', which is below the building roof is formed, the escaped water vapor is condensed again and the condensed water is drained off.
  • the dry remains Sludge solids that are collected by wheel loaders or similar equipment and can be processed further.
  • the system according to the invention starts from a building with relatively large dimensions (e.g. 60 x 45 m).
  • a building with relatively large dimensions (e.g. 60 x 45 m).
  • Any design can be used that has an adequate roof pitch provides.
  • a self-supporting building construction is very advantageous.
  • the floor of the building is heated with a floor heating so that the concrete floor is at a temperature of at least 60 °, preferably 80 ° can be heated. This is necessary so much of the germs contained in the mud are killed can. Adequate insulation is underneath the building floor slab provided.
  • the base plate is all-round with an upstand, preferably concrete upstand, provided so that a floor pan forms.
  • This backsplash serves as a ram protection when removing the remaining solid and because of the high inertial mass as an additional temperature buffer for the Building.
  • the trusses and a water channel are on the concrete upstand attached.
  • the building is provided with a gate on a gable for easy access with a wheel loader or similar. This is on the part of Tores lowered the upstand and for better passability inside provided with a ramp.
  • the roof of the building is sloping, for example by about 22 °, and with plates, preferably fiber cement or sheet metal, covered.
  • the side walls of the building are preferred with panels all around Sheet metal plates, closed. As insulation for the side walls is one Layer of spray foam applied to ceiling and side surfaces.
  • the ceiling of the building can optionally be cleaned better with aluminum trapezoidal sheets for better cleaning to be disguised.
  • the side walls optionally also clad with PVC profile boards.
  • the film web is preferably permeable to water vapor, but impermeable to water drops.
  • the foil sheet serves as a drip protection and additional water drain for the condensate falling from the cooling pipes.
  • the ceiling remains free, so that the water vapor there can reach the cooling loops freely.
  • Water, caught by a film, can also flow from the water channels to be caught.
  • the sludge to be dried is pumped into the building, so that preferably a uniform, z. B. 5 cm thick Spreads mud layer on the entire building floor.
  • the building can be closed with a Drive on a wheel loader or similar and remove the remaining solids become.
  • sludge almost forms germ-free water and solids, both of which are easily treated further can.
  • sludge As far as sludge is mentioned in the present application, so are here in particular meant sludges that are used in agricultural Production arise and the u. U. are germinated or in the liquid constituents other solid constituents, such as. B. straw manure, plant fibers etc. included.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Sludge is deposited on a floor inside a building, which is then heated to at least 60degreesC using a heating system incorporated into or beneath the floor. The building has a pitched roof, beneath which is a device for removing condensation from the atmosphere. This condensation is collected and removed.

Description

Die Erfindung betrifft eine Einrichtung und ein Verfahren zum Trocknen von Schlämmen. Bei diesen Schlämmen kann es sich auch um solche handeln, welche unter Umständen verkeimt sind (z. B. Mist, Gülle) oder die auch in den flüssigen Bestandteilen weitere feste Bestandteile enthalten (z. B. Strohmist).The invention relates to a device and a method for drying Sludges. These sludges can also be which may have been contaminated (e.g. manure, manure) or which are also in the liquid components contain other solid components (e.g. straw manure).

Als Stand der Technik sei allgemein hingewiesen auf DE 24 06 213 A1 sowie JP 2002062050 A.As prior art, general reference is made to DE 24 06 213 A1 and JP 2002062050 A.

Es sind zwar bereits Verfahren und Vorrichtungen zum Schlammtrocknen bekannt, wenn jedoch große Mengen von Schlamm getrocknet werden sollen, geschieht dies regelmäßig in freier Luft, wo die Sonneneinstrahlung den Schlamm austrocknet und dieser dann der weiteren Verarbeitung zugeführt werden kann.Methods and devices for drying sludge are already known, however, if large amounts of sludge are to be dried, this happens regularly in the open air, where the sun's rays Dries out sludge and then passes it on for further processing can be.

Eine solche Freilufttrocknung hat jedoch dann, wenn der Schlamm verkeimt ist, hochgradige Probleme. Einerseits können die Keime in die Umwelt entweichen und andererseits ist ein solches Trocknen von Schlämmen, wenn es sich um fäkalienhaltige Schlämme aus der Landwirtschaft handelt, mit sehr großen Geruchsbelästigungen verbunden.However, such outdoor drying occurs when the sludge becomes contaminated is high-level problems. On the one hand, the germs can escape into the environment and on the other hand, such drying of sludge if it is is agricultural sludge containing faeces, with very great odor nuisance.

Es sind zwar schon bereits sehr leistungsintensive Verdampfer bekannt, mit welchen größere Mengen von Schlamm bei Temperaturen weit oberhalb von 100° getrocknet werden können, diese Anlagen sind jedoch oftmals sehr teuer und nicht selten störungsanfällig.There are already very powerful evaporators known, with what larger amounts of sludge at temperatures well above Can be dried 100 °, but these systems are often very expensive and often prone to malfunction.

Aufgabe der Erfindung ist es, eine Schlammtrocknung vorzusehen, welche die bisherigen Nachteile vermeidet und eine ausreichend effektive Trocknungsleistung bereitstellt.The object of the invention is to provide a sludge drying, which avoids previous disadvantages and a sufficiently effective drying performance provides.

Die Aufgabe des erfindungsgemäßen Verfahrens zum Trocknen von Schlämmen wird mit den Merkmalen des Anspruchs 1 bzw. mit den Merkmalen des Schlammtrockners nach Anspruch 2 gelöst.The object of the method for drying sludge according to the invention is with the features of claim 1 or with the features of Sludge dryer solved according to claim 2.

Mit der Erfindung ist ein einfaches und wirkungsvolles System zur Verdampfung von Wasser aus Schlämmen mit gleichzeitiger Abtötung der meisten Keime beschrieben. Dabei ist ein Gebäude zentraler Bestandteil des Verdampfers.With the invention is a simple and effective system for evaporation of water from sludges, killing most Germs described. A building is a central component of the evaporator.

Bei dem erfindungsgemäßen System bildet das Gebäude, in das eine Bodenheizung sowie ein Kühlmechanismus eingebaut ist, die zentrale Rolle. Mittels der Bodenheizung wird einerseits das Wasser im Schlamm zum Verdampfen gebracht und mittels des Kühlmechanismus', welcher unterhalb des Gebäudedaches ausgebildet ist, wird der entwichene Wasserdampf wieder kondensiert und das Kondenswasser wird abgeführt. Zurück bleibt der trockene Schlammfeststoff, der per Radlader oder einem ähnlichen Gerät aufgesammelt und weiterverarbeitet werden kann.In the system according to the invention, the building forms a floor heating as well as a cooling mechanism is installed, the central role. through The floor heating turns the water in the sludge to evaporate brought and by means of the cooling mechanism ', which is below the building roof is formed, the escaped water vapor is condensed again and the condensed water is drained off. The dry remains Sludge solids that are collected by wheel loaders or similar equipment and can be processed further.

Wie in der Figur gezeigt, geht das erfindungsgemäße System von einem Gebäude mit relativ großen Abmaßen (z. B. 60 x 45 m) aus. Für das Gebäude kann jede Bauweise verwendet werden, die eine ausreichende Dachschräge zur Verfügung stellt. Eine freitragende Gebäudekonstruktion ist sehr vorteilhaft. Der Boden des Gebäudes wird mit den Heizschleifen einer Fußbodenheizung so versehen, dass der Betonboden auf eine Temperatur von wenigstens 60°, vorzugsweise 80° erwärmt werden kann. Dies ist erforderlich, damit ein Großteil der Keime, die in dem Schlamm enthalten sind, abgetötet werden können. Unterhalb der Gebäudebodenplatte ist eine ausreichende Isolierung vorzusehen.As shown in the figure, the system according to the invention starts from a building with relatively large dimensions (e.g. 60 x 45 m). For the building Any design can be used that has an adequate roof pitch provides. A self-supporting building construction is very advantageous. The floor of the building is heated with a floor heating so that the concrete floor is at a temperature of at least 60 °, preferably 80 ° can be heated. This is necessary so much of the germs contained in the mud are killed can. Adequate insulation is underneath the building floor slab provided.

Die Bodenplatte ist umlaufend mit einer Aufkantung, bevorzugt Beton-Aufkantung, versehen, so dass sich eine Bodenwanne bildet. Diese Aufkantung dient als Rammschutz beim Entnehmen des verbleibendenden Feststoffs und wegen der hohen trägen Masse als zusätzlicher Temperaturpuffer für das Gebäude.The base plate is all-round with an upstand, preferably concrete upstand, provided so that a floor pan forms. This backsplash serves as a ram protection when removing the remaining solid and because of the high inertial mass as an additional temperature buffer for the Building.

Auf der Betonaufkantung sind die Gebäudebinder sowie eine Wasserrinne befestigt.The trusses and a water channel are on the concrete upstand attached.

Das Gebäude ist an einem Giebel mit einem Tor versehen, um das Befahren mit einem Radlader oder Ähnlichem zu ermöglichen. Dazu ist auf Seiten des Tores die Aufkantung abgesenkt und zur besseren Befahrbarkeit im Inneren mit einer Rampe versehen. Das Dach des Gebäudes ist geneigt, beispielsweise um etwa 22°, und mit Platten, bevorzugt Faserzement- oder Blechplatten, bedeckt. Die Seitenwände des Gebäudes werden umlaufend mit Platten, bevorzugt Blechplatten, verschlossen. Als Isolierung für die Seitenwände ist eine Schicht aus Sprühschaum auf Decken- und Seitenflächen aufgetragen.The building is provided with a gate on a gable for easy access with a wheel loader or similar. This is on the part of Tores lowered the upstand and for better passability inside provided with a ramp. The roof of the building is sloping, for example by about 22 °, and with plates, preferably fiber cement or sheet metal, covered. The side walls of the building are preferred with panels all around Sheet metal plates, closed. As insulation for the side walls is one Layer of spray foam applied to ceiling and side surfaces.

Die Gebäudedecke kann wahlweise zur besseren Reinigung besser mit Aluminium-Trapezblechen verkleidet werden. Ebenso können die Seitenwände wahlweise auch mit PVC-Profilbrettern verkleidet sein.The ceiling of the building can optionally be cleaned better with aluminum trapezoidal sheets for better cleaning to be disguised. Likewise, the side walls optionally also clad with PVC profile boards.

Innerhalb des Gebäudes sind unterhalb der Decke Rohre, bevorzugt Kunststoffrohre, als Kühlschleifen verlegt. Durch diese Rohre wird permanent kaltes Wasser (oder ein anderes Kühlmittel gepumpt), so dass sich an den Rohraußenseiten Kondensat aus dem aufsteigenden Wasserdampf bildet. Das Kondensat läuft aufgrund der Dachschräge an den Rohren zu den Gebäudeseitenwänden ab und fällt dort in eine Wasserrinne. Die Wasserrinne bzw. die Wasserrinnen sind so angebracht, dass das Wasser zum Giebel läuft und von dort in einen Sammelbehälter zur weiteren Verwendung gelangt. Inside the building there are pipes, preferably plastic pipes, below the ceiling laid as cooling loops. These pipes keep the cold Water (or other coolant pumped) so that it is on the outside of the pipe Forms condensate from the rising water vapor. The condensate runs to the side walls of the building due to the sloping roof and falls into a gully there. The gully or the Gullies are installed so that the water runs to and from the gable there in a collection container for further use.

Unterhalb der Rohre kann auch parallel zur Decke mit einigem Abstand zu den Rohren bzw. der Decke eine Folienbahn gespannt werden. Die Folienbahn ist bevorzugt wasserdampfdurchlässig, für Wassertropfen allerdings undurchlässig. Die Folienbahn dient als Tropfschutz und zusätzlicher Wasserableiter für das Kondensat, welches von den Kühlrohren herabfällt.Below the pipes can also be parallel to the ceiling with some distance a film sheet is stretched over the pipes or the ceiling. The film web is preferably permeable to water vapor, but impermeable to water drops. The foil sheet serves as a drip protection and additional water drain for the condensate falling from the cooling pipes.

Im Firstbereich selbst bleibt die Decke frei, so dass der Wasserdampf dort ungehindert nach oben zu den Kühlschleifen gelangen kann.In the ridge area itself, the ceiling remains free, so that the water vapor there can reach the cooling loops freely.

Wasser, von einer Folienbahn aufgefangen, kann ebenfalls von den Wasserrinnen aufgefangen werden.Water, caught by a film, can also flow from the water channels to be caught.

Vor der Trocknung wird der zu trocknende Schlamm in das Gebäude gepumpt, so dass sich bevorzugt eine gleichmäßige, z. B. 5 cm starke Schlammschicht auf dem gesamten Gebäudeboden ausbreitet.Before drying, the sludge to be dried is pumped into the building, so that preferably a uniform, z. B. 5 cm thick Spreads mud layer on the entire building floor.

Danach wird das Gebäude geschlossen und die Fußbodenheizung, als auch die Wasserkühlung in Betrieb genommen.After that, the building is closed and the underfloor heating, as well water cooling started up.

Wenn das Wasser weitestgehend verdampft ist, bevorzugt vollständig verdampft ist, wird zunächst die Heizung und später die Kühlung abgestellt. Nach einer kurzen Lüftungsphase bei geöffnetem Tor kann das Gebäude mit einem Radlader oder Ähnlichem befahren und der verbleibende Feststoff entnommen werden.If the water has largely evaporated, preferably completely evaporated the heating and then the cooling is switched off first. To In a short ventilation phase with the gate open, the building can be closed with a Drive on a wheel loader or similar and remove the remaining solids become.

Bei dem erfindungsgemäßen Verfahren entstehen aus dem Schlamm nahezu keimfreies Wasser und Feststoffe, welche beide leicht weiter behandelt werden können.In the method according to the invention, sludge almost forms germ-free water and solids, both of which are easily treated further can.

Es ist auch möglich, einen Heizkreislauf für die Fußbodenheizung und den Kühlkreislauf für die Kühlrohre über ein Wärmerückgewinnungssystem miteinander zu kombinieren.It is also possible to have a heating circuit for the underfloor heating and the Cooling circuit for the cooling pipes with each other via a heat recovery system to combine.

Soweit in der vorliegenden Anmeldung von Schlämmen die Rede ist, so sind hierbei insbesondere solche Schlämme gemeint, die in der landwirtschaftlichen Produktion entstehen und die u. U. verkeimt sind oder die auch in den flüssigen Bestandteilen weitere feste Bestandteile, wie z. B. Strohmist, Pflanzenfasern etc. enthalten.As far as sludge is mentioned in the present application, so are here in particular meant sludges that are used in agricultural Production arise and the u. U. are germinated or in the liquid constituents other solid constituents, such as. B. straw manure, plant fibers etc. included.

Claims (2)

Verfahren zum Trocknen von Schlamm mittels Verdampfung von Wasser aus dem Schlamm bei gleichzeitiger Abtötung von in dem Schlamm enthaltenen Keimen, wobei der Schlamm zunächst in einem Gebäude auf einem Boden ausgebracht wird, wobei im oder unterhalb des Bodens eine Heizung installiert ist, mittels der der Boden auf eine Temperatur von wenigstens 60° vorzugsweise 80° oder mehr erwärmt wird, wobei das Gebäude ein geneigtes Gebäudedach aufweist, wobei unterhalb des Gebäudedachs eine Vorrichtung ausgebildet ist, welche aus dem Schlamm entweichenden Wasserdampf kondensiert und wobei kondensiertes Wasser aufgefangen und abgeführt wird.Process for drying sludge by evaporation of water from the sludge while killing those contained in the sludge Germinating, the mud initially in a building on a Soil is spread, heating in or below the soil is installed by means of which the floor to a temperature of at least 60 ° preferably heated to 80 ° or more, the building being inclined Has building roof, a device below the building roof is formed, which condenses water vapor escaping from the sludge and wherein condensed water is collected and discharged. Vorrichtung zum Trocknen von Schlämmen,
dadurch gekennzeichnet, dass die Vorrichtung aus einem Gebäude besteht mit einem Gebäudeboden, Gebäudeseitenflächen und einem geneigten Gebäudedach, wobei die Gebäudekonstruktion bevorzugt freitragend ausgebildet ist und innerhalb oder unterhalb des Gebäudebodens eine Heizungseinrichtung ausgebildet ist, mittels der der Boden auf eine Temperatur von wenigstens 60°, bevorzugt 80° erwärmbar ist und dass unterhalb des Gebäudedachs eine Kondensateinrichtung ausgebildet ist, welche den dem Schlamm entweichenden Wasserdampf kondensiert und wobei das von der Kondensateinrichtung ablaufende oder abtropfende Kondensat aufgefangen und aus dem Gebäude abgeführt wird.Device for drying sludge,
characterized in that the device consists of a building with a building floor, building side surfaces and an inclined building roof, the building construction preferably being self-supporting and a heating device being formed inside or below the building floor, by means of which the floor is heated to a temperature of at least 60 °, can preferably be heated to 80 ° and that a condensate device is formed below the building roof, which condenses the water vapor escaping from the sludge, and the condensate draining or dripping from the condensate device is collected and discharged from the building.
EP03024812A 2002-10-30 2003-10-30 Apparatus for drying sludges Withdrawn EP1416241A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10250770 2002-10-30
DE2002150770 DE10250770A1 (en) 2002-10-30 2002-10-30 Device for drying sludge

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EP1416241A2 true EP1416241A2 (en) 2004-05-06
EP1416241A3 EP1416241A3 (en) 2006-07-12

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1564515A2 (en) * 2004-02-17 2005-08-17 Vapo Oy Method for drying wet waste materials
FR2913761A1 (en) * 2007-03-13 2008-09-19 Degremont Sa Device for drying thick products containing organic matter such as sludge from urban or industrial wastewater purification stations, comprises an enclosure defined by bottom wall, side walls and roof, a ventilator, and a dehumidifier
ITTO20090756A1 (en) * 2009-10-05 2011-04-06 Entsorga Italia S R L BIOFILTER UNIT FOR FILLING BIOGAS FOR LANDFILL AND / OR BIOAEROSOLS, AND PLANT AND PROCESS FOR FILLING BIOGAS FOR DISCHARGE AND / OR BIOAEROSOLS BY AT LEAST A BIOFILTER UNIT.
CN105481224A (en) * 2016-01-21 2016-04-13 盐城琛丹低碳技术研究院有限公司 Air source sludge drying method
CN114538740A (en) * 2022-03-02 2022-05-27 上海威派格智慧水务股份有限公司 Carbon-reduction sludge drying system
CN114775707A (en) * 2022-06-01 2022-07-22 贵州恒义达建筑工程有限公司 Inside silt cleaning cart in tunnel

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DE102009001024A1 (en) 2009-02-19 2010-08-26 Huber Se Method for drying sludge within a drying chamber, comprises circulating drying air in the drying chamber, where the drying air is brought in contact with the sludge and the circulation of the drying gas is regulated by a control

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JP2002062050A (en) 2000-08-22 2002-02-28 Mikio Kinoshita Drying apparatus and drying method

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DE2406213A1 (en) 1974-02-09 1975-11-27 Heinrich Skowronek Sewage sludge drying system - using heating elements in tank and moving carriage with bars to breakup drying sludge
JP2002062050A (en) 2000-08-22 2002-02-28 Mikio Kinoshita Drying apparatus and drying method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1564515A2 (en) * 2004-02-17 2005-08-17 Vapo Oy Method for drying wet waste materials
EP1564515A3 (en) * 2004-02-17 2011-04-27 Vapo Oy Method for drying wet waste materials
FR2913761A1 (en) * 2007-03-13 2008-09-19 Degremont Sa Device for drying thick products containing organic matter such as sludge from urban or industrial wastewater purification stations, comprises an enclosure defined by bottom wall, side walls and roof, a ventilator, and a dehumidifier
ITTO20090756A1 (en) * 2009-10-05 2011-04-06 Entsorga Italia S R L BIOFILTER UNIT FOR FILLING BIOGAS FOR LANDFILL AND / OR BIOAEROSOLS, AND PLANT AND PROCESS FOR FILLING BIOGAS FOR DISCHARGE AND / OR BIOAEROSOLS BY AT LEAST A BIOFILTER UNIT.
WO2011042846A1 (en) * 2009-10-05 2011-04-14 Co2Balance Italia S.R.L. A process for removing methane from landfill biogas streams, and relevant biofiltering unit and plant
CN105481224A (en) * 2016-01-21 2016-04-13 盐城琛丹低碳技术研究院有限公司 Air source sludge drying method
CN114538740A (en) * 2022-03-02 2022-05-27 上海威派格智慧水务股份有限公司 Carbon-reduction sludge drying system
CN114775707A (en) * 2022-06-01 2022-07-22 贵州恒义达建筑工程有限公司 Inside silt cleaning cart in tunnel

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