EP2961695A1 - Procédé et dispositif de traitement de lisier agricole - Google Patents

Procédé et dispositif de traitement de lisier agricole

Info

Publication number
EP2961695A1
EP2961695A1 EP14710802.1A EP14710802A EP2961695A1 EP 2961695 A1 EP2961695 A1 EP 2961695A1 EP 14710802 A EP14710802 A EP 14710802A EP 2961695 A1 EP2961695 A1 EP 2961695A1
Authority
EP
European Patent Office
Prior art keywords
manure
phase
precipitation
precipitant
thin
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP14710802.1A
Other languages
German (de)
English (en)
Inventor
Hermann Josef Wilhelm
Hanspeter MAAS
Uwe Wilms
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agriv Raiffeisen Eg
Original Assignee
Agriv Raiffeisen Eg
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
Priority claimed from DE102013003606.2A external-priority patent/DE102013003606B4/de
Priority claimed from DE102013007829.6A external-priority patent/DE102013007829B4/de
Priority claimed from DE102013012976.1A external-priority patent/DE102013012976B4/de
Priority claimed from DE102013017531.3A external-priority patent/DE102013017531B4/de
Application filed by Agriv Raiffeisen Eg filed Critical Agriv Raiffeisen Eg
Publication of EP2961695A1 publication Critical patent/EP2961695A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
    • 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
    • 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
    • C05F3/06—Apparatus for the manufacture
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
    • 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
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/05—Conductivity or salinity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/11—Turbidity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/14—NH3-N
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/15—N03-N
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/19—SO4-S
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/22—O2
    • C02F2209/225—O2 in the gas phase
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/04—Surfactants, used as part of a formulation or alone
    • 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
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the invention relates to a method and a device for the treatment of agricultural manure, according to the preamble of claims 1 and 25, 33, 34, 40.
  • agricultural manure is not just the feces, such as manure and manure
  • Livestock farming recorded, but it also includes the digestate from biogas plants and, if necessary, sewage sludge from the farm's own wastewater treatment plants with; but also silage waters, or surface water in agricultural farms.
  • Such a device is known from EP 0 052 722 B1 for separating manure or sewage sludge into a solid and a liquid phase. The revealed there
  • Arrangement shows a large container, which is provided near the bottom with a flat filter, through which the water after filtration in a kind of clear water cellar
  • the invention is therefore based on the object to significantly increase the separation of thick phase and thin phase or clear phase in vorseparierter and not vorseparierter manure and to enable the effect of a year-round disposal by application of the thin phase of liquid manure and utilization of the thick phase.
  • the core of the process according to the invention is that water is additionally used as a separating agent, such that the suspended in the reaction of the precipitating agent with the manure floating on the separating agent water and / or sink water in the separating agent, and so separated thick phase of a clear phase zones can be separated. It is important here, in resulting several
  • the process according to the invention may be designed such that in the settling or separating vessel the precipitating agent is mixed with the separating agent before the manure of the abovementioned types is then supplied, or the sequence for the Mixing of liquid manure, water and precipitant can be permuted accordingly, as will be explained below.
  • precipitant and separating agent are to be distinguished from one another.
  • the precipitant is a chemical substance which contains, among other things, metal salts such as iron chloride.
  • the separating agent used in the case of the invention is water.
  • the precipitant is thus as chemical
  • the added separating agent leads to the fact that a liquid is supplied with a constant density, in which then the flocs formed by precipitation either float up or fall down.
  • the separation agent thus performs a physical separation
  • Manure which is treated by the method according to the invention, is preferably pre-separated slurry, in which already the solid constituents have already been separated by a mechanical pre-separation. The manure is then so-called pre-separated manure. The at this
  • Preseparation removed solids are attributed to a first thick phase.
  • pre-separated manure can still be viscous nature and is usually also, and has one
  • Dry matter content (TS content) of about 10%.
  • the added precipitant leads to a precipitation of dissolved or dispersed substances in flakes.
  • a separating agent namely water is mixed in as a separating agent. Now it is much more effective to separate the flocculation caused by precipitation.
  • mixing ratios are set in which a part of water is mixed with a part of pre-separated slurry, i. 1: 1.
  • this can be more or less.
  • the flake phase separated after the precipitation, or second thick phase can also be added to the first thick phase already taken in the pre-separation during further recycling, ie fed to the same final recycling, for example recycling in biogas plants or compost.
  • This slurry treatment can be run in batch batches, and a large number of separation applications can be run serially, and thus large quantities of manure can be treated.
  • the precipitation and separation reaction is carried out in a precipitation vessel. That in other words, that the precipitation reaction is carried out in a separate container to the manure cell to perform the reaction optimally and with adjustable and reproducible amounts of precipitant can.
  • first variant in a first step, water is first introduced into the precipitation vessel in which the precipitant is mixed or mixed and fed in a second step only the manure in the water / precipitant mixture becomes.
  • Water / precipitant mixture is initiated.
  • the liquid manure is below the level of liquid forming in the precipitation container
  • Precipitant in the precipitation tank is applied to the amount of water fed into the precipitation tank in each batch.
  • the precipitation reaction takes place immediately and visibly quickly, because the precipitant is immediately effective in the environment of the existing separation agent, and the water as a separating agent, the resulting flocculation immediately deposits by specific gravity in a floating and a sinking phase. The rest of the water contained in the liquid manure together with the separating agent water forms the clear phase.
  • Embodiment is that in a first step, the liquid manure is fed to the precipitation vessel via a pipe, in which precipitant of the supplied manure is already injected in parallel in the pipe, and
  • the separating agent is added to water.
  • This variant is for slurry with higher water content and lower
  • Separating agent water is mixed in a precipitating tank, and the slurry / separating agent mixture is circulated by means of a pump within the precipitation vessel, and during the pumping the precipitant is injected into this pumped Stoffström with.
  • the pumping causes, together with the injection that the
  • the gas and foam formation in the reaction is associated with an increase in volume.
  • Separating agent is recycled for the subsequent separation process.
  • the first fact is that water is used as a release agent in accordance with the invention.
  • the second fact is that the thus separated thin or clear phase is actually separated from the thick phase effectively enough that the clear zone as such is recycled for the subsequent process and is even again suitable as a water-separating agent.
  • Mixture is driven by a pump.
  • Process step is that separate agitators for Acceleration of a precipitation can be completely eliminated. Important is the positioning of such a pump exactly at this point of the process and the device.
  • the pump is a suction-pressure pump whose
  • Pressure side facing the inlet opening in the settling or separation tank is directed or directly into this opens or indirectly.
  • the method according to the invention specifies that the manure is mixed with precipitant as well as with separating agent before being introduced into the settling or separating tank.
  • manure is mixed before being introduced into the settling or separation vessel with precipitant, and the settling or
  • Separation container is filled with the separating agent or is filled simultaneously to the slurry-precipitant mixture introduction into the settling or separation vessel.
  • an advantageous embodiment in which the precipitation process takes place in two stages, such that initially a first Dosageilmenge of the precipitating agent in one of the procedural embodiments specified in the preceding claims in the settling tank or in the manure or in the manure / Water mixture is introduced or injected, and that afterwards in a second step, a second Dosageilmenge of the precipitating agent in one of the procedural embodiments specified in the preceding claims in the settling tank or in the manure or in the manure / Water mixture is introduced or injected, and that afterwards in a second step, a second Dosageilmenge of the precipitating agent in one of the procedural embodiments specified in the preceding claims in the settling tank or in the manure or in the manure / Water mixture is introduced or injected, and that afterwards in a second step, a second Dosageilmenge of the precipitating agent in one of the procedural embodiments specified in the preceding claims in the settling tank or in the manure or in the manure / Water mixture is introduced or
  • Precipitant is added and a first precipitation is achieved. By adding the remaining 10% of the
  • Precipitant for example, five to ten minutes later, then a significant reduction of the turbidity of the clear phase is achieved.
  • Treatment is in particular treatable.
  • the essence of the invention is to on the outer inlet side of the precipitation container a pump for
  • a further device is provided by providing a centrifuge with a rotating swirling element located at the bottom of the bottom, and this centrifuge is either integrated in the precipitating vessel, i.e. the precipitating vessel, or at the thin phase, i.e. at the same time.
  • Klarzonenablauf the precipitation container for post-treatment is connected to optimally mix the precipitant and / or the separating agent by rotation of the filled manure with the liquid manure, and / or effectively separate the precipitated flakes floating or sinking from the clear phase.
  • the pump is a suction / pressure pump, in which the negative pressure side, a pipe section is arranged with a T-tube, to which a connection for the
  • quantity or dosing regulators are provided at the injection openings, for the supply of the precipitant and / or the
  • the precipitation vessel is provided with a height-adjustable, sealed sliding gate, in which a removal opening for the separated thin or clear phase or thick phase or flake phase is arranged, so that through
  • Injection openings via a control device is controllable, and that in the precipitation container and / or in the
  • Pipe section with the pump, a conductivity sensor and / or a pH sensor, and / or an optical sensor-detector measuring path for measuring the turbidity, and / or a density sensor is or are provided, and that via said sensor values together with a automatically sensory recorded TS content of manure or of manure / water mixture the dosage or
  • volume control for the precipitant injection and / or the Trennungsschinjetechnisch is controllable. This results, so to speak, a suction pressure pump with an anaerobic mechanical swirling during the pumping operation through the pump funded manure. This accelerates the precipitation process in the case when before or when the manure enters the pump
  • Falling agent is injected into it.
  • Core of procedural further embodiment of the invention is that in a precipitation or separation vessel after or during precipitation gas or air is blown on the bottom side, such that the precipitated flakes components and other particulate matter by the bottom blown gas or the bottom blown air after be driven up and float in a foam carpet.
  • the aim of the additional measure proposed here is that the flooding and floating of flakes and suspended matter is accelerated so much time that the separation in thick phase and clear zone (thin phase) takes place within a very short time to the precipitation and
  • peeled thin phase is again subjected to a precipitation, and that the same treatment steps as in
  • Foam carpet may optionally be added wetting agents in the form of surfactants. With regard to a device, this is achieved in that the precipitation container bottom side, with air or gas pressurized
  • the bottom nozzles of the precipitation container are introduced for the gas or air introduction in a flat surface compactor, such that the bottom openings are arranged distributed over the entire surface of the surface compactor.
  • Core of the process according to the invention in the further embodiment of the invention is that the precipitating agent iron salts in the form of iron chloride in the form of solutions of iron-II-chloride, or ferric chloride, or ferric sulfate or ferrous chloride , or ferric chloride sulfate
  • Separating agent is supplied to the wastewater.
  • the wastewater from the purification plant is collected in a collection and pumped from there into a precipitation tank, and that on this pumping or conveying line then said precipitant via a metering device in an adjustable mixing ratio to be precipitated Wastewater is injected into the pump or flow.
  • the floating, the thick and flake phase comprehensive foam carpet is tillskimmt or skimmed off, and the remaining thin or clear phase
  • biological flocculants are added, namely dissolved chitin, and / or zeolites as powder, and / or bentonites as powder.
  • the essence of the invention is that when used in the wastewater of cleaning systems of
  • Collectible is collectable from where it is in one
  • Embodiment is specified that the precipitation container bottom side, with air or gas under pressure
  • the thin or clear phase which can be withdrawn from the precipitation container after precipitation can be pumped into another container or a tank in which oxygen or air can be injected at the bottom via nozzles in such a way that bound nitrogen still contained oxidizes and is expelled from the thin or clear zone.
  • a gas volume in which oxygen or air can be injected at the bottom via nozzles in such a way that bound nitrogen still contained oxidizes and is expelled from the thin or clear zone.
  • Nitrogen oxide sensor is arranged so that the
  • a nitrogen-oxide sensor or an oxygen sensor is arranged, so that the oxygen - or Beereinsprudelung on a Controlled with the nitrogen oxide sensor value or the oxygen sensor value control is regulated or limited in quantity.
  • Oxygen demand, BOD biological oxygen demand
  • Oxygen introduction is quantitatively rule or limited.
  • the ground-level introduction of oxygen or air takes place via a tube with sieve arranged close to the ground, or by a tube with perforation pipe arranged close to the ground. This takes place in such a way that via the nitrogen oxide sensor during the vortexing process a saturation of emerging from the thin or clear phase
  • Nitric oxide is detected, and at the latest
  • the thin or clear phase as nutrient water for crop or arable land must contain a defined residual content of nitrogen or nitrogen compounds contained therein.
  • This device can also be calibrated so that defined ranges can be set in the saturation curve for defined remaining amounts of nitrogen compounds in the thin or clear phase. That it is only bubbled until the nitrogen value is one
  • the wastewater in purification plants or the above-mentioned production plants is collected in a collecting tank and pumped from there into a precipitation tank. On this pump or conveyor line is then the
  • Wastewater quantity injected into the pump or flow This has the advantage that it already during the injection of a perfect mixture of the precipitant with the
  • Wastewater gives, and the precipitation already begins there after the injection site.
  • Residual content of nitrogen compounds can be adjusted.
  • Settling tank is mixed with a precipitating agent, and that at least the deducted from the settling tank thin phase and the accumulating during the precipitation process atmospheric nitrogen or gaseous
  • Nitrogen compounds of a closed aquatic plant culture facility are passed with stacked culture vats in which culture vats are planted with cultures of Azolla and / or hanging cultures of Tillandsia.
  • nitrous oxide In particular with iron chlorides, for example, atmospheric nitrogen or gaseous nitrogen compounds such as nitrous oxide are produced.
  • the latter can, for example, also outgas from a field area sprayed directly with liquid manure.
  • nitrous oxide is a long-lived climate gas.
  • the effect used in the invention is that the Azolla performs a nitrogen sorption from the gas phase via a symbiosis with bacteria. ie they can extract nitrogen or nitrogen compounds directly from the air, almost completely replacing a nitrate fertilizer.
  • Nitrogen compounds are released more, even if the exhaust air from the settling tank is passed to these plant cultures.
  • a thick and thin phase separation is carried out.
  • Nitrogen compounds are then fed to the closed aquatic plant culture facility in which at least in part Azolla is cultured.
  • Azolla cultures extract the nitrogen from the ambient air enriched with nitrogen and gaseous nitrogen compounds and metabolize it in a targeted manner.
  • This step leads again to a highly valuable biomass production for subsequent composting.
  • Nitrogen compounds are subsequently biogenic again metabolized and used for a high quality fertilizer.
  • the dewatered thick phase is also introduced into the composter, which leads to a total of rapid composting.
  • the process according to the invention is quite simple to implement and to operate in a substantially sustainable manner.
  • the Azolla is of the genus Azolla caroliniana Willd.
  • the new variety is of the genus Azolla caroliniana Willd.
  • Trough stack are created. These can be in
  • Lich weak zones for example, be cultivated in the lower troughs in the stack because duckweighs still have a higher Weak suitability.
  • Duckweeds are also good nitrate metabolizers, so that, for example, the introduced thin phase in the water lentil cultures
  • the Azolla and duckweed cultivated areas regularly at least a portion of their Cultivated area crop is harvested, and the harvested biomass is composted together with the separated from the manure thick phase in a composter. This is always the case when more amount of harvesting is required than is needed on a new filter substrate in the pass-through filters.
  • Culture stocking is harvested, and the harvested biomass is dried and used in a passage filter as a filter substrate.
  • the culture water is routed serially from trough to trough or trough group to trough group, so that at least almost at the end of the serial transmission
  • purified water is divertable. To create a closed thermal concept for the entire process, it is envisaged that the
  • Plant culture facility is integrated or are.
  • Heat concept in which, for example, the heat produced during composting is immediately available in the plant culture plant for the purpose of increasing and thus facilitating substance replacement stands .
  • the essence of the invention is that when initiated with a precipitant, running in a settling tank
  • Culture troughs with cultures of Azolla and duckweed and / or cultures of Tillandsien are created, and that at least a subset of the regularly harvestable biomass is dried fed to at least one pass filter element as a filter substrate.
  • Passing filter elements is provided as Filterlement for filtering the separated thin phase of the manure is or are.
  • the method and the device or the system can also be operated such that the pass-through filter element or the pass-through filter elements are provided as filter elements for the filtration of municipal wastewater or industrial wastewater.
  • the filter substrate from the said harvested and dried aquatic plants by the regular harvesting of the aquatic crops regularly is exchangeable, and the spent filter substrate is fed to a pyrolysis.
  • FIG. 5 depiction from above in precipitation containers according to FIG.
  • FIG. 7 process illustration
  • FIG. 8 process illustration in overview
  • FIG. 1 shows a clear representation of the individual components of the invention
  • Piping 2 fed in which a pump PI is arranged to convey the manure.
  • a pump PI On the pipe section 2 various connection flanges are provided, which are provided with valves.
  • valve V3 When the valve V3 is opened, manure is conveyed from the reservoir 10 via the pipe section 2 and the pump PI into the precipitation vessel 1.
  • the slurry pumped through the pipe section can immediately be added with the separating agent, wherein the separating agent is preferably entrained here by the slurry flow.
  • dosing or quantity measuring means may be provided which the slurry flow on the one hand and the amount of separating agent supplied in the correct ratio to each other can dose.
  • a valve V4 is provided, on what then precipitant immediately in the
  • Slurry flow can be injected with.
  • dosing and metering may be provided to add the desired amount of precipitant to the appropriate slurry quantity.
  • Controllers are controlled so that the
  • Separating agent, and the amount of precipitant can be mixed in the correct ratio to each other.
  • the mixture of the separating agent 11 and the precipitating agent 12 with the slurry takes place already in the pumped tube. That It needs to take place within the precipitation tank 1 no mechanical mixing more. The precipitation reaction then takes place in the precipitation vessel.
  • valve VI suction and pumping the already precipitated manure or a certain process variants of not yet precipitated manure.
  • the valve VI is opened and it is the liquid manure for example pumped back from the precipitation tank 1 via the pump PI back and introduced into the precipitation tank again.
  • the valves V2 and V4 then precipitating agent 12 and separating agent 11th
  • the precipitation process can also be carried out in the recirculation process. What is important here is that one and the same device leads to a multiplicity of possible methods.
  • the thick phase that is, the thick layer that floats on top or settles down, is then taken down or above.
  • the thick phase thus removed is already in a first compression due to the precipitation process. From there, the thick phase or floating layer is then fed to a filter or centrifuge device. This is pumped there via the pump P2.
  • the separation filter 2 may consist of a stand-alone filter in which the
  • Thick phase is further dehydrated, or it may be a centrifuge, as shown in Figure 4.
  • Thick phase 15 has an even higher degree of compaction.
  • FIG. 2 shows a precipitation container as already shown in FIG. 1, in which a fixed lower removal opening is provided, and one in height on one
  • Discharge opening 13 About the sealed sliding gate 4th you can subtract at any height thin phase (clear zone) or thick phase. The thick phase can also be taken off at the top.
  • FIG. 3 shows the stand filter 20, with which the precipitated manure again between clear phase or thin phase on the one hand and thick phase. On the other hand, flakes are separated.
  • This filter is preferably round, so rotationally symmetrical to the middle shown
  • Sieve material for example made of plastic or metal
  • This filter 2 is then filled with precipitated slurry, initially a lower flap 22 is closed.
  • the first water is already running out as a clear zone, and can run out through the trigger 24.
  • the lower flap 22 is opened, the precipitated manure slides down and is on the way down more and more drained, and thus also compressed, then falls down as
  • At the level of the prints 24 is a kind of siphon formed by a metal sheet 21, which is impermeable to water, so that no separated water in the thick phase
  • FIG. 1 A particularly advantageous embodiment is indicated schematically in FIG. There, a centrifuge 20 is shown, which may be connected at the outlet of the precipitation vessel according to Figure 1, and then separates the precipitated manure even more effectively between flakes and Klarzone.
  • centrifuge 1 is used as a separate centrifuge as in Figure 1 to separate the precipitated slurry even more clearly between Klarzone and flakes, or this centrifuge is already in one
  • Liquid are set in rotation and so centrifugal forces are generated, the flakes of the
  • Rotation produces a meniscus 31 through the rotaion.
  • the swirling element 30 may be a kind of stirrer with a fixed drive shaft, or the swirling element consists of a magnetizable material which is set in rotation by means of a rotating magnetic field generated at the bottom.
  • the effective centrifugal force on the manure can be varied by means of a controllable speed and thus the separation process can be controlled.
  • the resulting clear phase which can be stripped off in the abovementioned process variants can then be used as culture water in plant plants, i. from being used in greenhouses.
  • gas or air is also injected on the bottom side via a bubbler with nozzles 100, specifically at the latest immediately after the introduction of the precipitant or the
  • the forming flakes become strong
  • the mode of operation is that in the precipitation tank and in the other container, in which already after the
  • Precipitation withdrawn clear phase is filled, oxygen or air is blown near the ground, for the oxidation and the gas of the remaining remaining nitrogen compounds.
  • FIG. 6 shows the precipitation vessel 1 used in this embodiment example.
  • the manure is filled in and introduced with precipitant and separating agent, i.e. water or recycled thin or clear phase, and the precipitant and separating agent, i.e. water or recycled thin or clear phase, and the precipitant and separating agent.
  • the thin or clear phase still contains traces of remaining nitrogen compounds, ammonium, etc.
  • the clarified zone in order to be able to further reduce these, in order to be able to apply the clarified zone as nutrient or irrigation water on cultivated or arable land, it can vary depending on the manure and depending on the type of precipitation if necessary, the content of
  • oxygen or air may be blown from a reservoir.
  • This gas then bubbles through the thin or clear phase and oxidizes the nitrogen compounds which emerge in gaseous form into the gas space 111 above the fill level.
  • a sensor is placed in the gas space 110, which is the incoming there nitric oxide compounds such as nitrous oxide, or non-chemically bonded oxygen measures. The gas sensor detects the concentration of the said gas component which there against a
  • Saturation value or a pre-calibrated sensor value moves.
  • This sensor value is read in a control device 115 and correspondingly a manipulated variable for the oxygen or Heileinsprudelung, eg by
  • Oxygen demand, BOD biological oxygen demand
  • the sensor value of which is taken into account in the control so that the introduction of air or oxygen is quantitatively regulable or limitable.
  • FIG. 7 shows an overview of the process steps according to the invention. Agricultural manure in the broad sense, so by definition, not only manure from the
  • Manure 201 Livestock, but also fermentation residues from biogas plants, and if necessary, wastewater from animal slaughter, as well as silage and surface water from farms are referred to herein as manure 201, which is collected a settling tank 202 is fed via a line 203.
  • Injection 205 injected into the line 203, so that the precipitating agent quasi automatically homogeneously mixed into the incoming manure metered.
  • the effect is used that by this line by hydrostatic pressure or by pumping or suction thereby moving slurry at the injection site generates a negative pressure, which injected the
  • the so-called thick phase usually settles down and the clear zone or thin phase is above it.
  • the liquid Klarzone - or thin phase also contains mineral substances, which are particularly contributed by the contribution of digestate from biogas plants. This is fed into a culture water mixer 209 and then into an aquatic plant culture plant 210 of the type described above the culture wells.
  • the settling tank 202, as well as the drainage lines for the thin phase 206 and the culture water mixer 209 and the aquatic plant culture plant 210 are such
  • Nitrogen compounds which are formed in the precipitation, are transferred to the Pf lanzenkulturstrom 210 with. There are either all culture tubs populated with Azolla, or at least part of the tubs.
  • ammonium depleted thin phase becomes the Azolla cultures together with the entrained gaseous
  • the Azolla is capable of gaseous
  • the material flows continue in the way by further draining the withdrawn from the settling thick phase, for example, in a centrifuge 207 or a sieve, and thereby again drained thin phase 208 or Klarzone also the Culture water mixer 209 feeds, and the dewatered thick phase 212 then, for example, in the composting 213 are.
  • the Azolla harvest 211 which can be removed regularly in the aquatic culture plant 210, can likewise be added to the composting device 213, in particular so that the compost can be supplied with the necessary nitrogen again.
  • Plant culture device degas that with a
  • Tillandsien can be cultivated in the Rooerkultureinrchtung completely without
  • Figure 8 shows an embodiment in which also manure or other wastewater a
  • Drip dispenser 222 can be fed, which feeds the wastewater or slurry through-channel filter elements 223, which are filled with dried and ground Azolla as a filter substrate.
  • Azolla flour has a great absorption
  • the filtered filtered water is then supplied to the closed aquatic plant culture plant 210.
  • the harvested quantity 211 removed from this is not fed to composting but is dried and thus forms again regrowing new filter substrate, which is regularly exchanged for the used filter substrate in the pass-through filters 223.
  • the removed used filter substrate can be fed back to various uses.
  • this is a pyrolysis 225 with Generation of pyrolysis gas 231 as an energy source, as well as a way, for example, the heavy metal separation.
  • pre-purified water can be withdrawn at the end when the culture water is passed through in series.
  • Nitrogen sensor / Ammonium sensor (liquid phase) 119 Potassium sensor (liquid phase) 120 sulfur or H2S sensor (liquid phase)

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  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
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Abstract

L'invention concerne un procédé de traitement de lisier agricole, le lisier étant traité par des agents précipitants dans un procédé de décantation et/ou de séparation, et séparé en une phase épaisse et en une phase fluide ou phase claire, conformément au préambule de la revendication 1. L'invention vise à obtenir une nette augmentation de la séparation en phase épaisse et en phase fluide ou phase claire pour un lisier pré-séparé et non pré-séparé, et à permettre un effet d'évacuation pérenne par la production de la phase fluide du lisier et par la valorisation de la phase épaisse. A cet effet, on utilise en plus de l'eau comme agent de séparation de telle façon que les matières en suspension se déposant lors de la réaction des agents précipitants avec le lisier, flottent à la surface de l'agent de séparation eau et/ou se précipitent dans l'agent de séparation eau, et une phase épaisse ainsi séparée peut être évacuée à part d'une phase claire par zones.
EP14710802.1A 2013-03-01 2014-02-27 Procédé et dispositif de traitement de lisier agricole Withdrawn EP2961695A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102013003606.2A DE102013003606B4 (de) 2013-03-01 2013-03-01 Verfahren zur Entsorgung von Gülle
DE102013007829.6A DE102013007829B4 (de) 2013-04-27 2013-04-27 Verfahren und Einrichtung zur Behandlung von landwirtschaftlicher Gülle
DE102013012976.1A DE102013012976B4 (de) 2013-08-03 2013-08-03 Verfahren und Einrichtung zur Behandlung von landwirtschaftlicher Gülle
DE102013017531.3A DE102013017531B4 (de) 2013-10-22 2013-10-22 Verfahren und Einrichtung zur Behandlung von landwirtschaftlicher Gülle
PCT/EP2014/000518 WO2014131521A1 (fr) 2013-03-01 2014-02-27 Procédé et dispositif de traitement de lisier agricole

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DE102014005065B4 (de) * 2014-04-05 2017-01-05 Agri V Raiffeisen eG Verfahren zur Behandlung von landwirtschaftlicher Gülle
CN104671459B (zh) * 2015-01-26 2016-05-04 常州大学 一种处理河道污染物的生物滤床
JP6378342B2 (ja) * 2015-05-27 2018-08-22 三菱ケミカル株式会社 有機性廃水の処理方法
DE102015007307A1 (de) * 2015-06-11 2016-12-15 Maria Rogmans Verfahren zur Herstellung eines Dünge- oder Mikronährstoffes, sowie Dünge- oder Mikronährstoff, sowie eine damit versetzte Kultur- oder Pflanzerde
DE102016100077A1 (de) * 2016-01-04 2017-07-06 Josef Kotte Landtechnik Gmbh & Co. Kg Vorrichtung zur Separation von Stoffgemischen in mehrere Phasen
CN106746404A (zh) * 2016-12-26 2017-05-31 广东象博生态科技有限公司 一种污粪处理方法
CN108483838A (zh) * 2018-04-25 2018-09-04 哈尔滨共阳科技咨询有限公司 化粪池非降解残留物分选方法
FR3086940B1 (fr) * 2018-10-08 2020-09-25 Bee And Co Procede de traitement in situ de dechets biodegradables par methanisation et unite de traitement pour la mise en oeuvre dudit procede
CN109293421A (zh) * 2018-12-10 2019-02-01 黑龙江省农业科学院土壤肥料与环境资源研究所 一种片状有机肥及其制备方法和应用
CN110294584B (zh) * 2019-07-23 2024-02-02 中交上海航道勘察设计研究院有限公司 一种淤泥异位利用自重固结加固的装置及方法
CN110550727A (zh) * 2019-09-04 2019-12-10 湖南宇山玉月农业科技有限公司 一种处理畜禽废水的生物填料
CN110550726A (zh) * 2019-09-04 2019-12-10 湖南宇山玉月农业科技有限公司 一种处理畜禽废水的生物填料
CN110550724A (zh) * 2019-09-04 2019-12-10 湖南宇山玉月农业科技有限公司 一种处理畜禽废水的生物填料
CN110577336B (zh) * 2019-09-29 2022-04-22 重庆工商大学 一种水产养殖尾水强化絮凝的无害化处理方法
CN111943401A (zh) * 2020-08-25 2020-11-17 长春工程学院 一种用于景观园林的污水过滤回收装置
CN112079439B (zh) * 2020-09-11 2021-08-20 同济大学 一种旋流回收hpb中硅藻土颗粒的方法
CN112913698B (zh) * 2021-02-05 2022-08-30 江西正合生态农业有限公司 一种生猪养殖粪污全量化收储运的方法
CN113880396A (zh) * 2021-11-16 2022-01-04 盐城师范学院 一种稀粪便的处理方法

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