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WO1999054268A1 - Procede et dispositif d'elimination des dechets organiques dans l'eau, les effluents et les boues - Google Patents

Procede et dispositif d'elimination des dechets organiques dans l'eau, les effluents et les boues Download PDF

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Publication number
WO1999054268A1
WO1999054268A1 PCT/US1999/008725 US9908725W WO9954268A1 WO 1999054268 A1 WO1999054268 A1 WO 1999054268A1 US 9908725 W US9908725 W US 9908725W WO 9954268 A1 WO9954268 A1 WO 9954268A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
sludge
straw
processed straw
waste
Prior art date
Application number
PCT/US1999/008725
Other languages
English (en)
Other versions
WO1999054268A8 (fr
Inventor
Wolfgang JÖCHLE
Scott Charles
Thilo Boensch
Original Assignee
Global United, Inc.
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 Global United, Inc. filed Critical Global United, Inc.
Priority to US09/673,717 priority Critical patent/US6699389B1/en
Priority to PCT/US1999/008725 priority patent/WO1999054268A1/fr
Publication of WO1999054268A1 publication Critical patent/WO1999054268A1/fr
Publication of WO1999054268A8 publication Critical patent/WO1999054268A8/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
    • 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
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/20—Sludge processing

Definitions

  • the present invention is directed to methods and devices for using processed straw to remove organic waste (ammonium, nitrites, nitrates, and hydrogen sulfide), from water, effluent and sludge.
  • organic waste ammonium, nitrites, nitrates, and hydrogen sulfide
  • Organic waste in water is undesirable and must be removed before the water can be drained into waterways. Increased nutrients are known to harm the ecosystem into which the contaminated waters flow. Furthermore, organic waste, particularly nitrogenous waste, can accumulate in sources of water used in drinking or in agricultural applications as well as in closed aquatic systems, such as aquaria and closed fish and aquaculture systems.
  • nitrogenous waste (ammonia, nitrites and nitrates) result from the metabolic process of creatures living in a given body of water and from decay of organic matter in the water.
  • a great deal of organic waste can accumulate in a confined body of water such as an aquarium or fishery, due to the unnatural overcrowding of animal life in these settings. Accumulation of organic waste is harmful to animal and plant life within these closed aquatic environments. While ammonia and nitrite accumulation can be particularly devastating, resulting in the rapid demise of the inhabitants of the aquarium or fishery, accumulation of nitrates is also harmful to these inhabitants. Removal of nitrogenous waste from water, including nitrates, is therefore desirable.
  • Contaminated water is generally treated similarly to convert nitrogenous waste to nitrates.
  • Water or sludge containing nitrogenous matter is contacted with a substrate having certain microorganism deposited thereon, where it is aerobically converted to ammonia, nitrite, and later to nitrate.
  • the substrate is often contained within a trickle filter.
  • the microorganisms are of the types best adapted to the nutritional and physical conditions of the treatment system and include certain aerobic chemoheterotrophic bacteria and fungi which often arise by selection from the microorganisms initially present in the waste.
  • nitrification For instance, degradation of organic waste and/ or animal metabolism often results in production of ammonia, which is aerobically converted to nitrite and then to nitrate by Nitrosomonas and Nitrobacter species, respectively.
  • the process of conversion of ammonia to nitrate is known as nitrification.
  • nitrates after decay and treatment of organic matter in water can be achieved in a number of ways.
  • waste water treatment the nitrate-containing water either can be discharged, or further treated to remove nitrates, often by assimilation into plant matter.
  • nitrates can be removed by a number of methods. The simplest method for reducing nitrates is through water changes or by assimilation into plant matter. Assimilated ammonia, nitrites and nitrates, as well as phosphates and other contaminants are removed from the enclosed aquatic system by continuous harvesting of the plant matter. Growth of and harvesting of plant matter is often effective, provided the plants and/ or algae can be efficiently grown.
  • nitrates can often be effectively controlled.
  • achieving very low levels of nitrates through this method is often difficult or impossible to achieve, especially when fish are kept in the aquatic system.
  • Sewage sludge is a by-product created in sewage plants during waste water treatment.
  • a similar sludge results from agricultural waste or animal waste and effluent produced by the animal industry (cattle, especially dairy cattle, pigs, horses, intensively housed sheep and goats, poultry, and aquaculture).Treated, rotted, and partially solidified effluent and sludge is mostly spread on agricultural fields as a fertilizer and growth substrate.
  • the benefits for the agricultural industry are that the nutrients in the effluent/ sludge provide various nitrogen compounds, phosphate and potassium salts, which are important for plant growth.
  • Favorable times for the application of sewage sludge are between Fall and Spring since most fields are easily accessible at this time, prior to cropping.
  • Nitrogen in sewage sludge consists mostly of ammonium-nitrogen (NH4- N).
  • Ammonium-nitrogen is a common compound found in anaerobically rotted sludge. After sludge application, ammonium-nitrogen is converted into nitrate-nitrogen (NO3) within only a few days, making it water soluble and, thus, available to the groundwater. Drinking water has strict limits for both nitrate and ammonium.
  • a water filtering apparatus including a porous media container having an inner chamber and suitable configured so that water can pass through the chamber, and processed straw retaining within and suitably configured within the chamber such that when water passes through the chamber, it also passes through the straw.
  • a method for removing organic material from water including filtering water through a filtering apparatus which includes a porous media container having an inner chamber which is suitable configured so that water can pass through the chamber, and processed straw retained within and suitably within the chamber such that when water passes through the chamber, it also passes through the straw.
  • a method for enhancing the composting of organic matter including the steps of adding processed straw to a compost mixture and digesting said mixture.
  • Fig. 1 is a manufacturing flow chart of the method for production of processed straw according to the present invention
  • Fig 2 is a partially broken-away perspective view of a filter bag according to a first embodiment of the present invention
  • Fig 3 is a partially broken-away perspective view of a filter pouch according to a second embodiment of the present invention
  • Fig 4 is a partially broken-away perspective view of a canister filter according to the third embodiment of the present invention
  • Fig 5 is a schematic diagram of a sewage sludge treatment system according to the present invention.
  • Processed straw is effective for removal of organic waste, especially nitrogenous waste, from water for improving compost based fertilizers.
  • Processed straw is prepared in a number of fashions.
  • One method for manufacturing processed straw is the method of United States Patent No. 4,924,808, wherein straw is dried to a moisture content of between 8% to 14% by weight, chopped, compacted into briquettes and, the, crushed into granules.
  • Fig 1 shows an alternative method for preparing processed straw.
  • Straw is dried to a moisture content of 8% to 14% and is then shredded and milled.
  • the shredded and milled straw is screened for size.
  • the larger sized fraction is useful in water filters.
  • the fine straw particles which pass through the screen may be used or further processed for other purposes, such as for cat litter, according to United States Patent No. 4,924,808.
  • the minimum size of the retained processed straw is determined with regard to the ultimate use of the processed straw. For instance, in a water filter, the chosen size of the particles of processed straw depends upon a number of factors, such as, the choice of the media container and filtration device in which the straw is retained.
  • Choice of particle size may further be determined by optimally balancing the surface area of the processed straw particles, the desired flow rates through the media container within the filter and/ or desired rate of removal of waste. A higher surface area of the processed straw would result in a slower water flow rate, but would increase the waste-removal rate of the straw. If a filter system is used which forces pressurized water through a filter element, smaller particle sizes can be used. In any case, the processed straw particles should be larger than the openings/ pores of the container in which the straw is retained.
  • shredded and milled straw, weather screened or unscreened is further processed by compressing the processed straw into pellets and either milling or crumbling the pellets.
  • This processed straw can be either packaged for use or screened for size, once again, according to the ultimate use of the processed straw.
  • nitrogenous waste (ammonium, nitrite and nitrates) is present either in solution, as gas, or as solids.
  • Filtering water through processed straw prevents the undesirable and/ or dangerous build-up of nitrogen compounds in bodies of water, whether stagnant (ponds, lagoons, lakes without exit, fish tanks), flowing (river or raceways - either natural or artificial - or closed fish production systems with moving waters), and in moving waters in coastal and ocean rim areas (estuaries, lagoons, bays, inlets and fjords).
  • Build-up of waste materials in these bodies can be a result of natural processes or from pollution.
  • Filtration with processed straw also decreases the concentration of odors from nitrogenous compounds.
  • Nitrogen binding by processed straw is, therefore, for the purpose of, removal of nitrogen compounds from water, prevention of nitrogen compounds from entering drinking water, inhibition, prevention or reduction of undesirable algae growth, production of improved fertilizer from human and animal waste, and from food processing waste, and decreasing the concentration of odors from nitrogenous compounds.
  • Processed straw can be used successfully to reduce nitrate levels in water over a period of days through a process not yet fully understood, but is effective in the prevention of unwanted and undesirable growth of algae.
  • Pouches containing 5 g of processed straw were used.
  • 5 pouches were added to 1000 L of salt-water in a glass container (aquarium).
  • the nitrate concentration went from 125 ppm to ⁇ 100 ppm in 48 hours ⁇ 50 ppm in 50 hours ⁇ 25 ppm in 96 hours and ⁇ 10 ppm in 120 hours.
  • Example 2
  • a 180 L fresh-water aquarium was treated with a pouch containing 6 g of processed straw, reducing nitrate levels from 40 ppm to 0 ppm within 3 days.
  • the amount of straw is 0.002% to 1.25% by weight of the total volume of water to be filtered in a closed system, such as, in an aquarium or closed aquaculture facility.
  • the total volume of water to be filtered is equal to the volume of water contained in the closed aquatic system, including, but not limited to, water in sumps, filters, protein skimmers and tubes or pipes.
  • the type of filtering device or apparatus in which the processed straw is used is a matter of choice.
  • the filtering apparatus includes a porous media container having an inner chamber and configured to allow passage of water through the chamber.
  • Processed straw is retained within the chamber and is suitable configured therein so that water which passes through the chamber also passes through the processed straw.
  • suitable media containers include, without limitation, pouches, including fabric or mesh pouches and plastic cages or boxes.
  • Processed straw can be used in canister filters, hang-on filters, in sumps or placed directly into the body of water to be filtered.
  • Fig 2 is a cut-away elevational view of a first embodiment of the present invention.
  • a typical commercially available mesh filter bag 100 is packed with processed straw 120.
  • the filter bag 100 may be inserted directly into a body of water to be treated, or it can be inserted into a suitable filter apparatus, including, without limitation, canister filters, hang-on-tank filters, sumps and sump filters or in-line with a water pump.
  • a suitable filter apparatus including, without limitation, canister filters, hang-on-tank filters, sumps and sump filters or in-line with a water pump.
  • Like numbers in Figs. 3 and 4 refer to like elements in Fig,2.
  • Fig. 3 is a cut-away perspective view of a second embodiment of the present invention.
  • a filter pouch 200 is provided.
  • the filter pouch 200 is formed from a mesh pocket 210 and has a seal 215 in this embodiment. Processed straw is retained within the mesh pocket 210.
  • the filter pouch 200 can be suitably sized and shaped to fit commercially available filters and filter chambers.
  • the seal 215 is optional, depending upon the configuration of the filter pouch 200 and the material used from the mesh pocket 210.
  • Fig. 4 is a cut-away elevational view of a third embodiment of the present invention.
  • a canister filter 300 is provided.
  • the canister filter 300 includes a housing 310, a water inlet 312 and a water outlet 314.
  • the housing 310 is suitably configured to allow water which is siphoned, pumped or otherwise taken from a body of water (not shown) to pass from the inlet 312, through any media 316 within the canister filter 300 and to the outlet 314 for return to the body of water.
  • the media 316 includes processed straw 320.
  • the filter bag 100, the filter pouch 200 and the canister filter 300 are, without limitation, separate, but equivalent, embodiments of the media container of the present invention.
  • Fig. 5 shows a flow diagram of a typical integrated sewage sludge treatment system and illustrates a method for processing sludge, utilizing the methods of the present invention with regard to processing sludge to produce a fertilizer.
  • the sludge treatment system 400 includes a sludge inlet 410; a collection tank 420 in which sludge is collected and a rotting tower 430 in which the sludge is anaerobically fermented or digested in the presence of processed straw.
  • Anaerobically digested sludge is sent from the rotting tower 430 to mixing tanks 440 wherein the water content of the rotted sludge is reduced to about 70% for better incineration and/or composting. Drying the rotted sludge decreases operating expenses in a sludge treatment system. Water is further removed trough press systems such as a belt filter, screw press, frame press etc. 450 and the dried, rotted sludge is either incinerated in an incinerator 460, producing further energy and/or composted in a composter 470 with processed straw, for use as fertilizer. Water extracted in this system and according to this method can be filtered through processed straw according to the present invention to remove waste therein.
  • Effluent/ sewage sludge is a by-product created in sewage plants during waste water treatment. Sludge also results from agricultural waste or animal waste produced in the animal industry (cattle, especially dairy cattle, pigs, horses, intensively housed sheep and goats, poultry, and aquaculture).
  • waste of plants human and/or animal origin encompasses, without limitation, waste of plants human and/or animal origin, and the by-products from the food processing industry, such as dairy facilities, cheese factories, rendering plants, abattoirs, facilities for the canning and processing of fruit and vegetables, farms and the like.
  • This invention describes the beneficial effects realized from the addition of processed straw to sludge, when followed by a brief anaerobic rotting or aerobic composting method. Namely, addition of processed straw reduces the content of elutable nitrogen compounds, thus preventing loss of nutrients, as well as groundwater contamination.
  • processed straw is added to wet effluent/ sludge.
  • the mixture of sludge and processed straw is 0.1% to 10% by weight, processed straw.
  • the sludge mixture is composted, or rotted, resulting in a superior fertilizer with reduced quantities of elutable nitrogen compounds. Any form of processed straw may be used.
  • the nitrogen compounds in sludge prepared according to the present invention are contained in microbial protein, continuous degradation allows for a slow and gradual release of the nutrients after the processed sludge is applied as fertilizer to the land. Depending on soil temperature and soil moisture level, the microorganisms die off over several weeks and the organically bound nitrogen therein is again mineralized, making these nutrients available during times of increased plant growth.
  • pure sludge was found to contain 56 mg per liter of soluble, extractable nitrogen in the form of ammonium-nitrogen.
  • the mixture of sludge and processed straw, prior to composting contained 73 mg/l of ammonium-nitrogen. After 14 days of processing, the sludge and straw mixture showed a content of only 3 mg/l of extractable ammonium-nitrogen. None of the three samples studied showed any nitrate concentrations.
  • adding processed straw reduced the soluble nitrogen (washout nitrogen) from 73.8 mg/l to 3 mg/l, a reduction of 96%. It is important to note that the nitrogen had not been lost through the process but rather had been absorbed into the biomass of the microorganisms of the processed straw, protecting it from elution.
  • Example 2 In a second study, a laboratory scale procedure was utilized for the analysis. Each unit was comprised of a 5 L glass sealed vessel containing approximately 2 L swine manure with a dry solid contend of 2%. All analytical procedures were in accordance to EPA and ASTM methods. A 0.5% addition of processed straw has shown to decrease ammonia volatilization from the slurry by approximately 20% for up to 1 day post addition. Atmospheric hydrogen sulfide release, was also shown to be inhibited.
  • Example 3
  • a simple, inexpensive and safe method and apparatus for removing nitrogenous compounds from water is described herein.
  • Processed straw is inexpensive and easy to use and is shown effectively to remove nitrogenous waste compounds from water under safe aerobic conditions.
  • a fertilizer and a method for production thereof from sludge is provided resulting in a fertilizer which is rapidly produced from sludge and having sustained nitrogen release capabilities.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Fertilizers (AREA)
  • Treatment Of Sludge (AREA)

Abstract

L'invention concerne un procédé permettant de supprimer des contenants contenus dans l'eau et consistant à filtrer l'eau au travers d'un dispositif de filtrage comprenant un récipient pour milieux poreux dont la chambre intérieure est configurée de manière que l'eau puisse traverser la chambre et la paille traitée contenue dans ladite chambre. Ainsi, en traversant la chambre, l'eau passe également au travers de la paille. L'invention concerne également un procédé permettant d'améliorer le compostage (470) des matières organiques, notamment des boues, lequel procédé consiste à ajouter de la paille traitée à un mélange de compost, puis à laisser fermenter ledit mélange.
PCT/US1999/008725 1999-04-20 1999-04-20 Procede et dispositif d'elimination des dechets organiques dans l'eau, les effluents et les boues WO1999054268A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US09/673,717 US6699389B1 (en) 1999-04-20 1999-04-20 Method and apparatus for removing organic waste from water
PCT/US1999/008725 WO1999054268A1 (fr) 1999-04-20 1999-04-20 Procede et dispositif d'elimination des dechets organiques dans l'eau, les effluents et les boues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1999/008725 WO1999054268A1 (fr) 1999-04-20 1999-04-20 Procede et dispositif d'elimination des dechets organiques dans l'eau, les effluents et les boues

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WO1999054268A1 true WO1999054268A1 (fr) 1999-10-28
WO1999054268A8 WO1999054268A8 (fr) 2001-03-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2819425A1 (fr) * 2001-01-12 2002-07-19 Guyomarc H Nutrition Animale Procede de filtration d'un effluent a travers un substrat cellulosique de type paille
FR2898888A1 (fr) * 2006-03-22 2007-09-28 Vidanges 56 Entpr Unipersonnel Procede et station de traitement de matieres de vidange
WO2021217094A1 (fr) * 2020-04-24 2021-10-28 Nuorganics LLC Système et procédé de récupération de nutriments à partir de déchets liquides à haute teneur en azote

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FR2522642A1 (fr) * 1982-03-03 1983-09-09 Flechais Roland Procede d'elimination par compostage d'eaux residuaires chargees en azote notamment des eaux de lavage des laines et installation pour sa mise en oeuvre
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WO1990003352A1 (fr) * 1988-09-26 1990-04-05 Dyckerhoff & Widmann Aktiengesellschaft Procede de compostage de dechets liquides
DE3934122A1 (de) * 1989-10-12 1991-04-18 Otto Nockemann Verfahren zur aeroben verrottung hochbelasteter abwaesser
EP0542162A1 (fr) * 1991-11-15 1993-05-19 Günther Schwarzmann Procédé pour l'élimination d'eau usée
EP0602321A1 (fr) * 1992-12-16 1994-06-22 Krupp MaK Maschinenbau GmbH Dispositif de refroidissement de l'anneau de feu respectivement de la tête de la chemise du cylindre
DE19737691A1 (de) * 1996-10-30 1998-05-07 Joachim Boettcher Anlage zur Reinigung von Abwässern ohne Entstehung von Klärschlamm

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Publication number Priority date Publication date Assignee Title
JPS58130184A (ja) * 1982-01-25 1983-08-03 信越エンジニアリング株式会社 含水有機質廃棄物の堆肥化方法
FR2522642A1 (fr) * 1982-03-03 1983-09-09 Flechais Roland Procede d'elimination par compostage d'eaux residuaires chargees en azote notamment des eaux de lavage des laines et installation pour sa mise en oeuvre
US4576717A (en) * 1983-08-02 1986-03-18 Bureau De Recherches Geologiques Et Minieres Process for denitrifying subterreanean waters to make them potable
US4676907A (en) * 1984-02-02 1987-06-30 Harrison George C Biological filtration process
WO1990003352A1 (fr) * 1988-09-26 1990-04-05 Dyckerhoff & Widmann Aktiengesellschaft Procede de compostage de dechets liquides
DE3934122A1 (de) * 1989-10-12 1991-04-18 Otto Nockemann Verfahren zur aeroben verrottung hochbelasteter abwaesser
EP0542162A1 (fr) * 1991-11-15 1993-05-19 Günther Schwarzmann Procédé pour l'élimination d'eau usée
EP0602321A1 (fr) * 1992-12-16 1994-06-22 Krupp MaK Maschinenbau GmbH Dispositif de refroidissement de l'anneau de feu respectivement de la tête de la chemise du cylindre
DE19737691A1 (de) * 1996-10-30 1998-05-07 Joachim Boettcher Anlage zur Reinigung von Abwässern ohne Entstehung von Klärschlamm

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2819425A1 (fr) * 2001-01-12 2002-07-19 Guyomarc H Nutrition Animale Procede de filtration d'un effluent a travers un substrat cellulosique de type paille
FR2898888A1 (fr) * 2006-03-22 2007-09-28 Vidanges 56 Entpr Unipersonnel Procede et station de traitement de matieres de vidange
WO2021217094A1 (fr) * 2020-04-24 2021-10-28 Nuorganics LLC Système et procédé de récupération de nutriments à partir de déchets liquides à haute teneur en azote
US11858839B2 (en) 2020-04-24 2024-01-02 Gabriel Howard GIRALDO-WINGLER System and method for recovering nutrients from a high nitrogenous liquid waste
US12129194B2 (en) 2020-04-24 2024-10-29 Nuorganics LLC System and method for recovering nutrients from a high nitrogenous liquid waste
US12209042B2 (en) 2020-04-24 2025-01-28 Nuorganics LLC System and method for recovering nutrients from a high nitrogenous liquid waste

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