DE3000705C2 - Process for maintaining the biological activity and adapting the biocenosis of a biological waste air wet cleaning system during downtimes - Google Patents
Process for maintaining the biological activity and adapting the biocenosis of a biological waste air wet cleaning system during downtimesInfo
- Publication number
- DE3000705C2 DE3000705C2 DE3000705A DE3000705A DE3000705C2 DE 3000705 C2 DE3000705 C2 DE 3000705C2 DE 3000705 A DE3000705 A DE 3000705A DE 3000705 A DE3000705 A DE 3000705A DE 3000705 C2 DE3000705 C2 DE 3000705C2
- Authority
- DE
- Germany
- Prior art keywords
- biocenosis
- biological
- adapting
- cleaning system
- maintaining
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims description 7
- 230000004071 biological effect Effects 0.000 title claims description 3
- 239000010796 biological waste Substances 0.000 title claims description 3
- 238000004140 cleaning Methods 0.000 title description 5
- 239000007788 liquid Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 11
- 235000015097 nutrients Nutrition 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 235000013305 food Nutrition 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000004887 air purification Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological 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
- C02F3/02—Aerobic processes
- C02F3/04—Aerobic processes using trickle filters
-
- 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
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Treating Waste Gases (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Biological Treatment Of Waste Water (AREA)
Description
Die Reinigung von Abluft durch Auswaschen mit Wasser z. B. in Riesel- oder Sprüh türmen und Abbau der aufgenommenen Schadstoffe durch biologische Oxidation ist allgemein bekannt und kommt vielfach zur Anwendung. Die gelösten oder kolloidalen organischen Verbindungen und teilweise auch anorganische Verbindungen werden von auf den Rieselkörpern oder im Abwasser befindlichen Mikroorganismen (Bakterien, Pilzen, Protozoen) als Nahrungsquelle benutzt und oxidiert (vgL DE-OS 26 56 689, 2547 675, 20 20 207, US-PS2200581,FR-OS21 75 929.NL-OS71 02 133).The purification of exhaust air by washing with water z. B. towers in trickle or spray and dismantling the absorbed pollutants through biological oxidation is well known and often comes to Use. The dissolved or colloidal organic compounds and partly also inorganic compounds are found on the trickle bodies or in the wastewater (bacteria, Fungi, protozoa) used as a food source and oxidized (see DE-OS 26 56 689, 2547 675, 20 20 207, US-PS2200581, FR-OS21 75 929.NL-OS71 02 133).
Es ist bekannt, daß sich die Mikroorganismenpopulation (Biozönose) in einer derartigen Reinigungsanlage dem Nahrungsangebot anpaßt, so daß nach einer gewissen Adaptationszeit auch schwierig abzubauende Verbindungen mit gutem Erfolg abgebaut werden können.It is known that the microorganism population (Biocenosis) in such a cleaning system adjusts the food supply, so that after a With a certain adaptation time, even connections that are difficult to break down can be broken down with good success can.
Während der Stillstandszeiten der Reinigungsanlage, beispielsweise in der Nacht oder am Wochenende, muß die Biozönose durch Nahrungs- und Sauerstoffzufuhr künstlich am Leben gehalten werden. Es ist. dabei günstig, wenn die Nährlösung auch solche Stoffe enthält, die während der Betriebszeiten der Anlage abgebaut werden sollen, um etwaige Deadaptationserscheinungen der Biozönose, die zu einer Minderung der biologischen Abbauleistung führen, zu vermeiden (s. z.B. DE-OS 26 56 689, Seite 15; DE-OS 20 20 207, Seite 4). Die Herstellung solcher Nährlösungen ist jedoch schwierig, da einmal die Abluftzusammensetzung nach Art und Konzentration oftmals unbekannt ist und zum anderen ständigen Schwankungen unterworfen ist, die durch kleinere oder größere Produktionsumstellungen entstehen. Die Nährlösung müßte daher im allgemeinen ebenfalls eine ständig wechselnde Zusammensetzung haben, was sich in der Praxis als undurchführbar erweistDuring the downtime of the cleaning system, for example at night or on the weekend, must the biocenosis can be artificially kept alive through the supply of food and oxygen. It is. included favorable if the nutrient solution also contains substances that are broken down during the operating hours of the system should be to avoid any deadaptation symptoms of the biocenosis that lead to a reduction in the lead to biological degradation performance (see e.g. DE-OS 26 56 689, page 15; DE-OS 20 20 207, Page 4). However, the production of such nutrient solutions is difficult because of the composition of the exhaust air is often unknown in terms of type and concentration and, on the other hand, is subject to constant fluctuations is caused by smaller or larger production changes develop. The nutrient solution should therefore generally also have a constantly changing composition have what turns out to be impracticable in practice
Es besteht daher die Aufgabe, die biologische Aktivität und die Adaptation der Biozönose der Waschflüssigkeit während der Stillstandszeiten der Abluftreinigungsanlage durch Zufuhr einer Nährlösung aufrechtzuerhalten, die in ihrer Zusammensetzung stets dem aktuellen Stand der Abgaszusammensetzung entsprichtThere is therefore the task of the biological activity and the adaptation of the biocenosis of the Washing liquid during downtimes of the exhaust air purification system by supplying a nutrient solution to maintain the composition always the current status of the exhaust gas composition is equivalent to
Diese Aufgabe wird durch das im Patentanspruch 1 beschriebene Verfahren gelöst Die Ansprüche 2 und 3 nennen Ausgestaltungen des Verfahrens nach Anspruch 1.This object is achieved by the method described in claim 1. Claims 2 and 3 name embodiments of the method according to claim 1.
Der biologischen Abluftnaßreinigungsanlage wird eine Vorwäsche mit Wasser vorgeschaltet. In dem Waschwasser der Vorwaschstufe lösen sich die gas- undThe biological waste air wet cleaning system is preceded by a pre-wash with water. By doing Wash water of the prewash stage, the gas and
ίο dampfförmigen Abluftinhaltsstoffe bis zur Sättigung. Dies wird abhängig von den Abluftinhaltsstoffen und deren Konzentration unterschiedlich schnell erreicht Im Normalfall vergehen jedoch nur wenige Stunden. Die Vorwäsche erfolgt in an sich bekannter Weise, z. B.ίο vaporous exhaust air constituents up to saturation. This is achieved at different speeds depending on the substances in the exhaust air and their concentration However, it usually only takes a few hours. The pre-wash is carried out in a manner known per se, for. B.
durch Durchleiten der Gase durch einen Sprüh- oder Rieselturm, in dem die Vorwaschflüssigkeii umgepumpt wird oder durch Durchperlen der Gase durch die Vorwaschflüssigkeit Die Vorwäsche kann in einem gesonderten Anlagenteil oder auch integ. iert im Absorber der biologischen Stufe stattfinden. Die Menge an Vorwaschflüssigkeit wird zweckmäßig so bemessen, daß die in ihr gelöste Menge an Abluftinhaltsstoffen zur Ernährung der Biozönose während der Stillstandszeiten ausreicht Es ist jedoch auch möglich, der Biozönose weitere an sich bekannte Nährstoffe wie Zucker, Milchpulver, Phosphate usw, vorteilhaft zusammen mit der Vorwaschflüssigkeit zuzusetzen. Die Abluftinhaltsstoffe stellen in diesem Fall dann nicht mehr die alleinige Nährstoffquelle dar, sondern dienen nur noch dazu, etwaige Deadaptationserscheinungen der Biozönose zurückzudrängen. In diesem Falle kann die Menge anby passing the gases through a spray or trickle tower in which the prewash liquid is pumped around or by bubbling the gases through the prewash liquid. The prewash can be carried out in one separate system part or also integ. iert take place in the absorber of the biological stage. The amount of prewashing liquid is expediently dimensioned so that the amount of substances contained in the exhaust air dissolved in it Nutrition of the biocenosis during the downtimes is sufficient, however, it is also possible for the biocenosis other nutrients known per se such as sugar, milk powder, phosphates, etc., advantageously together with add to the prewash liquid. In this case, the substances contained in the exhaust air are no longer the only ones Source of nutrients, but only serve to prevent possible deadaptation phenomena of the biocenosis push back. In this case, the amount of
gehalten werden.being held.
dampfförmigen Inhaltsstoffen auch Staub enthält, findet in der Vorwaschstufe eine Entstaubung statt Es kann
daher auf die vielfach erforderliche F.ntstaubungsstufe vor Eintritt in die Abluftreinigungsanlage verzichtet
werden. Durch die Vorwaschslufe wird die in die Abluftreinigungsanlage eintretende Abluft gleichzeitig
mit Wasserdampf gesättigt Das Ausfallen von Kalk sowie die Aufsalzung des Waschwassers kann somit von
der biologischen Reinigungsstufe ferngehalten werden. Bei hohen Staubgehalten in der Abluft kann eine
mechanische, ggf. auch chemische Vorklärung (Absetzen, Rockung) des Vorwaschwassers aus der Vorwaschstufe
vor der Verwendung als Nährlösung erforderlich werden. Falls in der Vorwaschstufe größere Mengen
Waschflüssigkeit anfallen, als während der Stillstandsso zeiten der Hauptwaschstufc abgebaut werden können,
kann der Oberschuß an Vorwaschflüssigkeit selbstverständlich auch während des Betriebes der Hauptwaschstufe
dieser zugeleitet und dort abgebaut werden.
Stark schwankende Gehalte der Abluft an Schadstoffen während des Betriebes werden durch De- und
Absorptionsvorgänge in der Vorwaschstufe weitgehend ausgeglichen, wodurch Belastungsspitzen für das biologische
System abgefangen werden können. Dadurch wird eine gleichmäßigere Belastung der biologischencontains vaporous ingredients and dust, dedusting takes place in the pre-washing stage. The often required dedusting stage before entering the exhaust air cleaning system can therefore be dispensed with. The pre-wash cycle saturates the exhaust air entering the exhaust air purification system with water vapor. The precipitation of lime and the salt build-up in the wash water can thus be kept away from the biological purification stage. In the case of high dust contents in the exhaust air, mechanical, possibly also chemical pre-clarification (settling, rocking) of the pre-wash water from the pre-wash stage may be necessary before it can be used as a nutrient solution. If larger amounts of washing liquid occur in the pre-washing stage than can be reduced during the standstill times of the main washing stage, the excess of pre-washing liquid can of course also be fed to the main washing stage during operation and broken down there.
Strongly fluctuating levels of pollutants in the exhaust air during operation are largely compensated for by de- and absorption processes in the pre-washing stage, which means that load peaks for the biological system can be absorbed. This creates a more even load on the biological
eo Stufe mit einem verbesserten Wirkungsgrad erzielt.eo stage achieved with an improved efficiency.
Claims (3)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3000705A DE3000705C2 (en) | 1980-01-10 | 1980-01-10 | Process for maintaining the biological activity and adapting the biocenosis of a biological waste air wet cleaning system during downtimes |
| BE0/203325A BE886868A (en) | 1980-01-10 | 1980-12-24 | PROCESS FOR MAINTAINING BIOLOGICAL ACTIVITY AND ADAPTING BIOCENOSIS OF A BIOLOGICAL INSTALLATION TO SHUTDOWN |
| GB8100145A GB2067092B (en) | 1980-01-10 | 1981-01-05 | Process for maintaining the biological activity and adaptation of the biocoenosis of a biological waste-air wet-purification unit |
| NL8100031A NL8100031A (en) | 1980-01-10 | 1981-01-07 | METHOD FOR MAINTAINING THE BIOLOGICAL ACTIVITY AND ADJUSTING THE POPULATION OF THE MICROORGANISMS OF A BIOLOGICAL TREATMENT PLANT. |
| FR8100207A FR2473548B1 (en) | 1980-01-10 | 1981-01-08 | PROCESS FOR MAINTAINING BIOLOGICAL ACTIVITY AND ADAPTATION OF BIOCENOSIS IN A WET AND BIOLOGICAL AIR CLEANING PLANT DURING PERIODS OF SHUTDOWN OF OPERATION |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3000705A DE3000705C2 (en) | 1980-01-10 | 1980-01-10 | Process for maintaining the biological activity and adapting the biocenosis of a biological waste air wet cleaning system during downtimes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3000705A1 DE3000705A1 (en) | 1981-07-16 |
| DE3000705C2 true DE3000705C2 (en) | 1982-07-22 |
Family
ID=6091797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3000705A Expired DE3000705C2 (en) | 1980-01-10 | 1980-01-10 | Process for maintaining the biological activity and adapting the biocenosis of a biological waste air wet cleaning system during downtimes |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE886868A (en) |
| DE (1) | DE3000705C2 (en) |
| FR (1) | FR2473548B1 (en) |
| GB (1) | GB2067092B (en) |
| NL (1) | NL8100031A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3784480D1 (en) * | 1986-12-05 | 1993-04-08 | Ciba Geigy Ag | EXHAUST AIR PURIFICATION PROCEDURE. |
| CH674715A5 (en) * | 1988-04-07 | 1990-07-13 | Ciba Geigy Ag | |
| DE4009109A1 (en) * | 1990-03-21 | 1991-09-26 | Fraunhofer Ges Forschung | METHOD FOR THE MICROBIOLOGICAL CLEANING OF EXHAUST AIR FLOWS CONTAMINATED WITH HALOGENATED ETHENES AND / OR WITH HALOGENATED BUTADIENES |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2200581A (en) * | 1934-12-24 | 1940-05-14 | Pruss Max | Purification of gases by biological means |
| DE2020207B2 (en) * | 1970-04-25 | 1976-07-08 | Wieferig, Theodor, Dipl.-Ing., 2848 Vechta | METHOD AND DEVICE FOR CLEANING ROOM EXHAUST AIR, PREFERABLY STABILITY EXHAUST |
| DE2547675B2 (en) * | 1975-10-24 | 1978-06-01 | Daimler-Benz Ag, 7000 Stuttgart | Process for the wet cleaning of polluted exhaust air |
| DE2656689C2 (en) * | 1976-12-15 | 1982-11-04 | Daimler-Benz Ag, 7000 Stuttgart | Process for the wet cleaning of exhaust air containing organic carbon compounds with biological liquid regeneration |
-
1980
- 1980-01-10 DE DE3000705A patent/DE3000705C2/en not_active Expired
- 1980-12-24 BE BE0/203325A patent/BE886868A/en not_active IP Right Cessation
-
1981
- 1981-01-05 GB GB8100145A patent/GB2067092B/en not_active Expired
- 1981-01-07 NL NL8100031A patent/NL8100031A/en not_active Application Discontinuation
- 1981-01-08 FR FR8100207A patent/FR2473548B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2067092B (en) | 1983-06-02 |
| GB2067092A (en) | 1981-07-22 |
| FR2473548B1 (en) | 1985-07-12 |
| FR2473548A1 (en) | 1981-07-17 |
| BE886868A (en) | 1981-04-16 |
| NL8100031A (en) | 1981-08-03 |
| DE3000705A1 (en) | 1981-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8125 | Change of the main classification | ||
| D2 | Grant after examination | ||
| 8320 | Willingness to grant licences declared (paragraph 23) | ||
| 8330 | Complete disclaimer |