EP1991343A1 - Hochdruckreaktor zur aufbereitung von schlämmen und verfahren zum betreiben des hochdruckreaktors - Google Patents
Hochdruckreaktor zur aufbereitung von schlämmen und verfahren zum betreiben des hochdruckreaktorsInfo
- Publication number
- EP1991343A1 EP1991343A1 EP07711528A EP07711528A EP1991343A1 EP 1991343 A1 EP1991343 A1 EP 1991343A1 EP 07711528 A EP07711528 A EP 07711528A EP 07711528 A EP07711528 A EP 07711528A EP 1991343 A1 EP1991343 A1 EP 1991343A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure reactor
- reactor
- pressure
- sludge
- gas
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims description 22
- 238000010626 work up procedure Methods 0.000 title abstract 2
- 239000010802 sludge Substances 0.000 claims abstract description 40
- 239000002028 Biomass Substances 0.000 claims abstract description 11
- 238000011282 treatment Methods 0.000 claims description 14
- 230000002040 relaxant effect Effects 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 28
- 239000010801 sewage sludge Substances 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
- C02F11/08—Wet air oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
- B01F23/2322—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles using columns, e.g. multi-staged columns
-
- 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
- C02F2209/42—Liquid level
-
- 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
- C02F2301/06—Pressure conditions
- C02F2301/063—Underpressure, vacuum
-
- 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
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Definitions
- the invention relates to a high-pressure reactor for the treatment of biomass-containing sludges with a sludge inlet and a sludge outlet and a supply for pressurized gas, and a method for operating the high-pressure reactor.
- biomass-containing sludge e.g. Sewage sludge or sludge
- various methods for so-called disintegration of sludges have already been proposed, e.g. the sewage sludge or sludge is crushed by the action of external physical, chemical or biological forces. The action of the forces leads to sludge digestion with the aim of better drainability.
- the degree of crushing of the sludge depends, inter alia. on the method used, the energy used and the properties of the sludge. At low energy inputs, only a flocculation destruction takes place predominantly, with high energy inputs a flocculation and a disruption of the microorganisms.
- Microorganisms are broken up in the mud. Also known is the use of ultrasonic homogenizers, high-pressure homogenizers, high-performance pulse technology, lysate centrifuge technology and impact blasting. Common to all these methods is the objective of releasing cell ingredients through the action of forces to further stabilize or mineralize the sludge. A fight against foam problems should be achieved with these methods. Concrete applications are the improvement of anaerobic stabilization, the provision of internal carbon sources for the Denitrification and the improved settleability of sludges, in particular swelling sludge. Sewage sludge disintegration is a step in the process that has so far been used only sporadically on municipal wastewater treatment plants.
- the sludges are usually exposed to temperatures of over 100 degrees Celsius, whereby the cell walls of the microorganisms are destroyed.
- Chemical processes e.g. Wet oxidation, ozone treatment,
- the non-prepublished DE 102 004 042 773.9 relates to a method for the treatment of biomass-containing sludges, in which the sludge is introduced into a high-pressure reaction vessel, which is acted upon by a gas or gas mixture.
- a high pressure is maintained that the gas or gas mixture diffuses into the biomass.
- the gas concentration in the aqueous phase drops, so that a gas overpressure arises in the biomass, which leads to a digestion of the biomass.
- the cell membranes are bursted by cells contained in the biomass so that the cell contents are released.
- the drainability of the sludge is significantly improved.
- the present invention has the object, a high-pressure reactor of the type mentioned in such a way that at low investment cost, an economic disintegration of the sludge is achieved.
- the high-pressure reactor as a vertically oriented, elongated reactor with a diameter of 0.2 to 2 m and a height of 2 to 10 m is formed, wherein the sludge inlet and the sludge outlet are each arranged at a longitudinal end of the reactor and the supply of the pressurized gas in the lower region of the reactor is mounted.
- the high pressure reactor has a height to diameter ratio of 5 to 50.
- its volume is suitably 0.1 to 5 m 3
- the feed for the pressurized gas is in accordance with a particularly preferred embodiment of the invention with a multi-nozzle gas inlet device in the lower region of the high pressure reactor in combination.
- the nozzles are advantageously distributed over the cross section of the high pressure reactor.
- the high-pressure reactor Due to the high and slim design of the high-pressure reactor results in a longer rise height of the gas bubbles, so that the overall gas utilization is improved. Due to the small reactor cross-section, moreover, a uniform gas enrichment of the sludge volume is achieved. The high-pressure reactor therefore comes with smaller wall thickness, whereby the container costs can be significantly reduced.
- the high-pressure reactor is preferably designed for an operating pressure of 10 to 100 bar. At these pressures, extensive disintegration of the sludge can be achieved.
- At least two high-pressure reactors are connected in parallel.
- Another variant provides that at least two high-pressure reactors are connected in series.
- the invention further relates to a method for operating a high-pressure reactor for the treatment of biomass-containing sludges.
- the stated object is achieved in that the high-pressure reactor is filled in a cyclical sequence with sludge and emptied and the sludge located in the high-pressure reactor by introducing at least once per cycle the pressurized gas and then releasing the high pressure reactor is subjected to a pressure change.
- the gas oxygen, nitrogen, carbon dioxide, compressed air or mixtures of these gases can be used.
- the gas entry can be continuous or pulsed via special gas inlet devices with multiple nozzles.
- the entire reactor volume of a high-pressure reactor is filled and emptied.
- Up to three high-pressure reactors can be filled and emptied one after the other in parallel operation for quasi-continuous sludge treatment.
- a two-stage mode of operation is provided, wherein in a high-pressure reactor half the reactor volume is filled and emptied. With two connected in series
- High pressure reactors can be filled and emptied the entire reactor volume.
- an operating pressure of the high-pressure reactor of 10 to 100 bar is preferably set per cycle.
- a pulsed gas entry via special nozzles during the entire residence time of the sludge in the high pressure reactor causes an improved distribution of the gas in the sludge and thereby a higher gas utilization, whereby the economy of the disintegration process can be increased overall.
- Figure 1 shows a single-stage operation with a high pressure reactor
- FIG. 2 shows a single-stage operation with three high-pressure reactors
- FIG. 3 shows a two-stage operation with half the reactor volume
- Figure 4 shows a two-stage operation with two high-pressure reactors in series
- FIG. 1 shows a high-pressure reactor 1 in a tall and slim design.
- a feed line 2 for sewage sludge is attached.
- a level measurement 3 in the upper region of the high-pressure reactor 1 measures the fill level in the high-pressure reactor 1.
- a vent line 4 is arranged in the top region of the high-pressure reactor 1.
- the gas supply line 5 is connected to a gas, not shown in the figure Control unit in conjunction.
- the gas supply line 5 ends at a gas nozzle 6.
- the gas entry increases the pressure in the high-pressure reactor. Via a contact gauge 8, the pressure in the high pressure reactor is measured. At the lower end of the high-pressure reactor 1, a drain line 7 leads away from the high-pressure reactor 1 for the disintegrated sewage sludge.
- FIG. 2 shows a parallel connection of similar high-pressure reactors 1. The same parts of the installation are designated by the same reference numerals as in FIG. 1.
- FIG. 3 relates to a two-stage treatment of the sewage sludge in a single high-pressure reactor 1.
- the structure of the high-pressure reactor 1 corresponds to the high-pressure reactor shown in FIG. In the two-stage operation of this high-pressure reactor 1, half the reactor volume is filled with sewage sludge per cycle and emptied.
- the upper half 9 of the high-pressure reactor 1 is provided as a filling volume, while the lower half 10 represents the volume for the second treatment.
- FIG. 4 shows a two-stage operation with two high-pressure reactors connected in series. The two high-pressure reactors, which are constructed in the same way, are connected to one another via the sewage sludge discharge line 7 of the high-pressure reactor 1 shown on the left.
- the sewage sludge discharge line 7 opens into the lower region of the high-pressure reactor 1 shown on the right. In this way, the sewage sludge already pretreated in the high-pressure reactor 1 shown on the left can be aftertreated in the high-pressure reactor 1 shown on the right.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07711528A EP1991343A1 (de) | 2006-03-03 | 2007-02-13 | Hochdruckreaktor zur aufbereitung von schlämmen und verfahren zum betreiben des hochdruckreaktors |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006009880A DE102006009880A1 (de) | 2006-03-03 | 2006-03-03 | Hochdruckreaktor zur Aufbereitung von Schlämmen und Verfahren zum Betreiben des Hochdruckreaktors |
| EP06015699A EP1832334A1 (de) | 2006-03-03 | 2006-07-27 | Hochdruckreaktor zur Aufbereitung von Schlämmen und Verfahren zum Betreiben des Hochdruckreaktors |
| PCT/EP2007/001252 WO2007101521A1 (de) | 2006-03-03 | 2007-02-13 | Hochdruckreaktor zur aufbereitung von schlämmen und verfahren zum betreiben des hochdruckreaktors |
| EP07711528A EP1991343A1 (de) | 2006-03-03 | 2007-02-13 | Hochdruckreaktor zur aufbereitung von schlämmen und verfahren zum betreiben des hochdruckreaktors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1991343A1 true EP1991343A1 (de) | 2008-11-19 |
Family
ID=37022872
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06015699A Withdrawn EP1832334A1 (de) | 2006-03-03 | 2006-07-27 | Hochdruckreaktor zur Aufbereitung von Schlämmen und Verfahren zum Betreiben des Hochdruckreaktors |
| EP07711528A Ceased EP1991343A1 (de) | 2006-03-03 | 2007-02-13 | Hochdruckreaktor zur aufbereitung von schlämmen und verfahren zum betreiben des hochdruckreaktors |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06015699A Withdrawn EP1832334A1 (de) | 2006-03-03 | 2006-07-27 | Hochdruckreaktor zur Aufbereitung von Schlämmen und Verfahren zum Betreiben des Hochdruckreaktors |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP1832334A1 (de) |
| DE (1) | DE102006009880A1 (de) |
| WO (1) | WO2007101521A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH662338A5 (de) * | 1984-12-07 | 1987-09-30 | Biowatt Ag | Verfahren zur reduktion der anaeroben abbauzeit in einem dynamischen anaerobfilter. |
| US5057284A (en) * | 1986-02-07 | 1991-10-15 | Envirotech | Bioslurry reactor for treatment of slurries containing minerals, soils and sludges |
| JPS63171626A (ja) * | 1986-05-12 | 1988-07-15 | Mitsubishi Heavy Ind Ltd | スラリ−溶液の処理装置 |
| US5306637A (en) * | 1991-08-22 | 1994-04-26 | Lin Ho Mu | Method for recovery of intracellular material by disruption of microbial cells with carbon dioxide under pressure |
| DE19715819C1 (de) * | 1997-04-16 | 1998-02-12 | Invent Gmbh | Verfahren zum Aufschluß von gasförmiger Stoffwechselprodukte erzeugenden Mikroorganismen |
| FR2818160B1 (fr) * | 2000-12-20 | 2003-03-07 | Air Liquide | Procede d'oxydation de type oxydation par voie humide ou ozonation |
| FR2820735B1 (fr) * | 2001-02-14 | 2004-05-14 | Vivendi Water Systems | Procede et installation pour l'hydrolyse thermique des boues |
| KR100432321B1 (ko) * | 2002-08-13 | 2004-05-20 | 엔바이로텍 주식회사 | 슬러지 분해가용화 방법을 이용한 슬러지 무배출하수고도처리방법 |
| DE102004058462A1 (de) * | 2004-09-03 | 2006-03-09 | Linde Ag | Verfahren zur Desintegration von Schlämmen |
-
2006
- 2006-03-03 DE DE102006009880A patent/DE102006009880A1/de not_active Withdrawn
- 2006-07-27 EP EP06015699A patent/EP1832334A1/de not_active Withdrawn
-
2007
- 2007-02-13 EP EP07711528A patent/EP1991343A1/de not_active Ceased
- 2007-02-13 WO PCT/EP2007/001252 patent/WO2007101521A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007101521A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006009880A1 (de) | 2007-09-06 |
| EP1832334A1 (de) | 2007-09-12 |
| WO2007101521A1 (de) | 2007-09-13 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
Effective date: 20080821 |
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| 17Q | First examination report despatched |
Effective date: 20090122 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LINDE AG |
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| REG | Reference to a national code |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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Effective date: 20110212 |