DE102010002339A1 - Wastewater treatment plant comprises two biological purification units, from which aerobic purification step is carried out, at least one purification unit for carrying out wet-oxidation followed by additional biological purification unit - Google Patents
Wastewater treatment plant comprises two biological purification units, from which aerobic purification step is carried out, at least one purification unit for carrying out wet-oxidation followed by additional biological purification unit Download PDFInfo
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- 238000000746 purification Methods 0.000 title claims abstract description 61
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 22
- 238000009279 wet oxidation reaction Methods 0.000 title claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 18
- 238000007254 oxidation reaction Methods 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 11
- 239000002028 Biomass Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000000123 paper Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 23
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- 238000009300 dissolved air flotation Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 150000001722 carbon compounds Chemical class 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002503 metabolic effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
-
- 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
- C02F3/02—Aerobic processes
- C02F3/06—Aerobic processes using submerged filters
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Die Erfindung betrifft eine Abwasserreinigungsanlage mit wenigstens zwei biologischen Reinigungsstufen, von denen zumindest eine Reinigungsstufe aerob ausgeführt ist.The invention relates to a wastewater treatment plant with at least two biological purification stages, of which at least one purification stage is aerobic.
Zur Reinigung der Abwässer kommen mechanische, biologische und chemische Verfahren, insbesondere auch in Kombination zum Einsatz.For the purification of the effluents, mechanical, biological and chemical processes are used, in particular also in combination.
In anaeroben Reinigungsstufen werden durch Mikroorganismen organische Stoffe des Abwassers vorwiegend in Methan und Kohlenstoffdioxid umgesetzt. Hierzu wurden verschiedene Verfahren wie UASB- oder IC-Reaktoren entwickelt.In anaerobic purification stages, organic substances in the wastewater are predominantly converted into methane and carbon dioxide by microorganisms. Various methods such as UASB or IC reactors have been developed for this purpose.
In aeroben biologischen Reinigungsstufen werden durch Mikroorganismen die abbaubaren organischen Stoffe und teilweise auch die anorganischen Stoffe des Abwassers oxidiert, wobei Luft (Sauerstoff) in das Abwasser gepumpt wird. Hierzu wurden verschiedene Verfahren, wie das Belebtschlammverfahren, das Tropfkörperverfahren, das Tauchkörperverfahren, das Festbettreaktorverfahren u. a. entwickelt.In aerobic biological treatment stages microorganisms oxidize the degradable organic substances and partly also the inorganic substances of the wastewater, whereby air (oxygen) is pumped into the wastewater. For this purpose, various methods, such as the activated sludge process, the trickling filter method, the submersible method, the fixed bed reactor method u. a. developed.
Dabei verbleibt nach dieser biologischen, aeroben Reinigungsstufe ein biologisch inerter CSB (chemischer Sauerstoffbedarf), der nur durch aufwendige Verfahren, wie den Fenton-Prozess oder eine Membranfiltration reduziert werden kann.In this case remains after this biological, aerobic purification stage, a biologically inert COD (chemical oxygen demand), which can only be reduced by complicated procedures, such as the Fenton process or membrane filtration.
Die Aufgabe der Erfindung ist es daher, den Rest-CSB nach einer aeroben Reinigungsstufe möglichst effizient zu vermindern.The object of the invention is therefore to reduce the residual COD after an aerobic purification stage as efficiently as possible.
Erfindungsgemäß wurde die Aufgabe dadurch gelöst, dass auf die aerobe Reinigungsstufe wenigstens eine Reinigungsstufe mit Nassoxydation und auf diese mindestens eine weitere biologische Reinigungsstufe folgt. Als Nassoxydation wird hier die chemische Oxydation von organischen und/oder anorganischen Verbindungen in einer flüssigen Phase verstanden. Dabei kann die Nassoxydation durch die Einleitung von Ozon oder Sauerstoff (bei hohem Druck und hoher Temperatur) herbeigeführt werden. Wesentlich effizienter und mit geringerem Aufwand verbunden ist es allerdings, wenn die Nassoxydations-Reinigungsstufe elektrochemisch und/oder UV-gestützt ausgebildet ist. Bei der elektrochemischen Nassoxydation werden Radikale oder starke Oxydationsmittel (Ozon, OH-Radikale, O-Radikale) durch die Zerlegung von Wasser auf elektrolytischem Wege hergestellt. Durch das Anlegen einer Gleichspannung wird das Wasser zerlegt, wobei an der Anode OH-Radikale und ab einer bestimmten Spannung Ozon und an der Katode Wasserstoff erzeugt werden.According to the invention, this object is achieved in that the aerobic purification stage is followed by at least one purification stage with wet oxidation and at least one further biological purification stage. Wet oxidation is understood here to mean the chemical oxidation of organic and / or inorganic compounds in a liquid phase. In this case, the wet oxidation by the introduction of ozone or oxygen (at high pressure and high temperature) can be brought about. However, it is considerably more efficient and less costly if the wet-oxidation purification stage is designed to be electrochemically and / or UV-supported. In electrochemical wet oxidation, radicals or strong oxidants (ozone, OH radicals, O radicals) are prepared by the decomposition of water by electrolytic means. By applying a DC voltage, the water is decomposed, producing at the anode OH radicals and above a certain voltage ozone and at the cathode hydrogen.
Hierzu sollten inerte Elektroden, vorzugsweise sogenannte Diamantelektroden zum Einsatz gelangen.For this purpose, inert electrodes, preferably so-called diamond electrodes should be used.
Bei der UV-gestützten Nassoxydation werden die Radikale oder Oxydationsmittel durch die Bestrahlung des Abwassers mit UV-Strahlung erzeugt. Dabei sollte die Wellenlänge dieser Strahlung zwischen 50 und 400 nm, vorzugsweise zwischen 100 und 200 nm und insbesondere zwischen 175 und 195 nm liegen.In UV-based wet oxidation, the radicals or oxidants are generated by the irradiation of the waste water with UV radiation. The wavelength of this radiation should be between 50 and 400 nm, preferably between 100 and 200 nm and in particular between 175 and 195 nm.
Zur Intensivierung der CSB-Verringerung kann es von Vorteil sein, wenn die elektrochemische und die UV-gestützte Nassoxydation in Kombination zum Einsatz gelangen.To intensify the COD reduction, it may be advantageous to use the electrochemical and the UV-supported wet oxidation in combination.
Im Ergebnis werden durch diese Nassoxydation insbesondere kolloidal gelöste Störstoffe im Abwasser zumindest teilweise oxydiert und langkettige sowie biologisch inerte Moleküle aufgebrochen. Die aufgebrochenen und/oder teilweise oxidierten Moleküle können dann in der nachfolgenden biologischen Reinigungsstufe abgebaut werden.As a result, in particular colloidally dissolved impurities in the wastewater are at least partially oxidized by this wet oxydation and long-chain and biologically inert molecules are broken up. The broken and / or partially oxidized molecules can then be degraded in the subsequent biological purification stage.
Hierzu kann es vorteilhaft sein, wenn die der Nassoxydations-Reinigungsstufe folgende biologische Reinigungsstufe aerob ausgebildet ist. Dabei kann die folgende, biologische Reinigungsstufe mit Vorteil nach dem Belebtschlammverfahren arbeiten oder als Biofiltration ausgebildet sein.It may be advantageous for this purpose if the biological purification stage following the wet oxydation purification stage is aerobic. In this case, the following biological purification stage can advantageously operate according to the activated sludge process or be designed as biofiltration.
Beim Belebtschlammverfahren wird das Abwasser durch die Stoffwechsel-Aktivität von aeroben, schwebenden chemoorganoheterotrophen Mikroorganismen, dem sogenannten Belebtschlamm, weitestgehend von organischen, abbaubaren (beispielsweise durch Atmung oder Adsorption am Belebtschlamm) Verunreinigungen befreit. Das Verfahren kann nach der Filterung der Grobanteile einsetzen, die entwässert, separiert und verbrannt werden.In the activated sludge process, the wastewater is freed by the metabolic activity of aerobic, floating chemoorganoheterotrophic microorganisms, the so-called activated sludge, as much as possible of organic, degradable (for example by respiration or adsorption on activated sludge) impurities. The process can use after filtering the coarse fractions, which are dewatered, separated and burned.
Anlagen nach dem Belebtschlammverfahren können sowohl kontinuierlich, d. h. im Durchlaufbetrieb, als auch diskontinuierlich betrieben werden.Systems according to the activated sludge process can both continuously, d. H. in continuous operation, as well as discontinuously operated.
Beim Durchlaufbetrieb folgt auf ein Belebungsbecken zur Belüftung des Gemisches aus Abwasser und Belebtschlamm ein Nachklärbecken zur Schlammabtrennung. Der Belebtschlamm wird im Nachklärbecken oder Absetzbecken vom gereinigten Abwasser durch Sedimentation getrennt, durch sein Eigengewicht eingedickt, am Beckenboden abgezogen und wenigstens teilweise als sogenannter Rücklaufschlamm in das Belebungsbecken zurückgefördert. Das gereinigte und vom Belebtschlamm weitgehend befreite Abwasser verlässt das Nachklärbecken meist oben über ein Überlaufwehr. Dabei können auch mehrere biologische Stufen hintereinander geschaltet werden.In continuous operation, an after-settling tank for sludge separation follows on to an aeration tank for aeration of the mixture of wastewater and activated sludge. The activated sludge is separated from the treated wastewater by sedimentation in the secondary clarifier or sedimentation tank, thickened by its own weight, withdrawn from the tank bottom and at least partially conveyed back into the activated sludge tank as so-called return sludge. The purified wastewater, which is largely freed from activated sludge, usually leaves the secondary clarifier above an overflow weir. In this case, several biological stages can be connected in series.
Im Biofilter werden durch Stoffwechselaktivität von festsitzenden Mikroorganismen Schad- und Geruchsstoffe zu nicht toxischen, geruchsneutralen und überwiegend niedermolekularen Substanzen, wie Kohlendioxid und Wasser abgebaut. Hierzu besteht das Filtermaterial beispielsweise aus Sand, Torf, Kokosfaser, Wurzelholzfaser o. ä.. Im Filtermaterial werden die abzubauenden Schadstoffe absorbiert. Immobile Mikroorganismen auf und in dem Filtermaterial bauen die Schadstoffe ab und bilden neue Biomasse. Zur Entfernung des Überschussschlammes werden Biofilter meist regelmäßig rückgespült. Dabei ist es von Vorteil, wenn die beim Biofilter anfallende Biomasse wenigstens teilweise in die vor der Nassoxydations-Reinigungsstufe angeordnete aerobe Reinigungsstufe zurückgeführt wird. Biofilter können aerob oder anaerob ausgeführt sein. In the biofilter, harmful substances and odorous substances are degraded to non-toxic, odor-neutral and predominantly low-molecular substances such as carbon dioxide and water by metabolic activity of stuck microorganisms. For this purpose, the filter material consists for example of sand, peat, coconut fiber, root wood fiber o. Ä .. In the filter material to be degraded pollutants are absorbed. Immune microorganisms on and in the filter material degrade the pollutants and form new biomass. To remove the excess sludge biofilters are usually backwashed regularly. It is advantageous if the biomass resulting from the biofilter is at least partially recycled to the aerobic purification stage arranged upstream of the wet-oxidation purification stage. Biofilters may be aerobic or anaerobic.
Es kann allerdings allein zur Vermeidung von Geruchsemissionen vorteilhaft sein, wenn die der Nassoxydations-Reinigungsstufe folgende biologische Reinigungsstufe anaerob ausgebildet ist.However, it may be advantageous to avoid odor emissions alone if the biological purification stage following the wet oxydation purification stage is anaerobic.
Außerdem kann es zur Intensivierung der Reinigung von Vorteil sein, wenn zwischen der aeroben Reinigungsstufe und der Nassoxydations-Reinigungsstufe eine DAF-Reinigungsstufe angeordnet ist.In addition, it can be advantageous to intensify the cleaning if a DAF cleaning stage is arranged between the aerobic purification stage and the wet oxidation purification stage.
DAF (Dissolved air flotation) bezeichnet ein Reinigungsverfahren, bei dem Luft unter Druck in das Abwasser eingeleitet wird. Im Flotationsbecken kommt es durch die Druckentspannung zur Bildung von Luftblasen, welche die Störstoffe binden und nach oben führen, wo sie als Flotat entfernt werden.DAF (Dissolved Air Flotation) refers to a purification process in which air is introduced under pressure into the wastewater. In the flotation basin, the release of pressure leads to the formation of air bubbles, which bind the contaminants and lead them upwards, where they are removed as flotate.
Falls das Abwasser aus einem Produktionsprozess stammt, ist es von Vorteil, wenn das Abwasser nach der Abwasserreinigungsanlage zumindest teilweise vorzugsweise gänzlich in den Produktionsprozess zurückgeführt wird.If the wastewater comes from a production process, it is advantageous if the wastewater after the wastewater treatment plant is at least partially preferably completely returned to the production process.
Wegen der hohen CSB-Belastung eignet sich der Einsatz der Abwasserreinigungsanlage vor allem für Abwasser, welches aus einer Anlage zur Herstellung oder Aufbereitung von Fasern für die Papier- oder Kartonherstellung oder aus einer Maschine zur Herstellung und/oder Veredlung einer Papier-, Karton- oder einer anderen Faserstoffbahn kommt.Because of the high COD load, the use of wastewater treatment plant is particularly suitable for wastewater, which consists of a plant for the production or processing of fibers for paper or board production or from a machine for producing and / or finishing a paper, cardboard or another fibrous web comes.
Dabei ist es besonders vorteilhaft, wenn das mit der Abwasserreinigungsanlage gereinigte Abwasser zur Versorgung von Spritzrohren, Sprühdüsen o. ä. oder bei der Chemikalienaufbereitung eingesetzt wird.It is particularly advantageous if the treated with the wastewater treatment plant wastewater for supplying spray pipes, spray nozzles o. Ä., Or used in the treatment of chemicals.
Nachfolgend soll die Erfindung an mehreren Ausführungsbeispielen näher erläutert werden. In der beigefügten Zeichnung zeigt:The invention will be explained in more detail below with reference to several exemplary embodiments. In the attached drawing shows:
Die erste biologische Reinigungsstufe
Im nachfolgenden Nachklärbecken
Nach dieser aeroben Reinigungsstufe
Nach dieser Nassoxydations-Reinigungsstufe
In der Nassoxydations-Reinigungsstufe
Dabei können der ersten biologischen Reinigungsstufe
Im Unterschied hierzu wird das Abwasser
Die beiden Nassoxydations-Reinigungsstufen
Nach der Nassoxydations-Reinigungsstufe
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010002339A DE102010002339A1 (en) | 2010-02-25 | 2010-02-25 | Wastewater treatment plant comprises two biological purification units, from which aerobic purification step is carried out, at least one purification unit for carrying out wet-oxidation followed by additional biological purification unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010002339A DE102010002339A1 (en) | 2010-02-25 | 2010-02-25 | Wastewater treatment plant comprises two biological purification units, from which aerobic purification step is carried out, at least one purification unit for carrying out wet-oxidation followed by additional biological purification unit |
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| DE102010002339A1 true DE102010002339A1 (en) | 2011-08-25 |
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| DE102010002339A Withdrawn DE102010002339A1 (en) | 2010-02-25 | 2010-02-25 | Wastewater treatment plant comprises two biological purification units, from which aerobic purification step is carried out, at least one purification unit for carrying out wet-oxidation followed by additional biological purification unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014104314B4 (en) * | 2014-03-27 | 2017-08-17 | Pro-Entec Umweltschutz Gmbh | Process for treating landfill leachate and landfill leachate treatment plant |
| DE102018124744A1 (en) * | 2018-10-08 | 2020-04-09 | Niersberger Wohn- und Anlagenbau GmbH & Co. KG | Method for operating a pressure water filter and system with a pressure water filter |
-
2010
- 2010-02-25 DE DE102010002339A patent/DE102010002339A1/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014104314B4 (en) * | 2014-03-27 | 2017-08-17 | Pro-Entec Umweltschutz Gmbh | Process for treating landfill leachate and landfill leachate treatment plant |
| DE102018124744A1 (en) * | 2018-10-08 | 2020-04-09 | Niersberger Wohn- und Anlagenbau GmbH & Co. KG | Method for operating a pressure water filter and system with a pressure water filter |
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