DE102011006615A1 - Plant for treating fluid with activated carbon comprises a device for introducing activated carbon in fluid, an activated carbon application area exhibiting cleaning effect and a cleaning device for separating activated carbon from fluid - Google Patents

Abstract

Plant for treating fluid with activated carbon, comprises: a device for the introduction of the activated carbon (29) in fluid (33); an activated carbon application area, in which the activated carbon introduced in the fluid, can exhibit a cleaning effect by adsorption and/or absorption of pollutants from the fluid; and a cleaning device (34) for separating activated carbon from the fluid including the pollutant removed from the fluid. The cleaning device has a separating device (36) for the activated carbon carried in the liquid, which is subjected over an inlet aperture with the liquid. Plant for treating fluid with activated carbon, comprises: a device for the introduction of the activated carbon (29) in fluid (33); an activated carbon application area, in which the activated carbon introduced in the fluid, can exhibit a cleaning effect by adsorption and/or absorption of pollutants from the fluid; and a cleaning device (34) for separating activated carbon from the fluid including the pollutant removed from the fluid. The cleaning device has a separating device (36) for the activated carbon carried in the liquid, which is subjected over an inlet aperture with the liquid, where through an underflow aperture (42), liquid is removable with an increased concentration of activated carbon particles in relation to the state of the inlet aperture and at an overflow aperture, liquid is removable with a reduced concentration of activated carbon particles in relation to the state of the inlet aperture.

Description

The invention relates to a plant for the treatment of fluid with activated carbon, with a device for the introduction of activated carbon in liquid, with an activated carbon application area in which the introduced into the liquid activated carbon in the fluid to be treated a cleaning effect by adsorption and / or Absorption of pollutants from the fluid can develop, and with a cleaning device for separating activated carbon from the liquid including the pollutants extracted from the fluid.

Systems for the treatment of fluid with activated carbon are used in particular in sewage treatment plants. In such plants the effluent organic odors and flavorings, pharmaceutical residues, pesticides and chlorinated hydrocarbons or pathogenic components such as bacteria, viruses and protozoa can be withdrawn. There, activated carbon in the form of powdered activated carbon is added to the wastewater. The activated carbon offset wastewater is then passed into a contact basin. In the contact basin, the powdered activated carbon extracts pollutants from the wastewater by adsorption. Subsequently, the activated carbon enriched with contaminants is separated from the purified wastewater. For this purpose, it is known by the addition of flocculants such as. As aluminum sulfate, ferrous chloride or polyelectrolyte flare the activated carbon in the purified wastewater. In a filter stage, this flocculated activated carbon is then separated.

Because the flocculant clogs the still free pores of the activated carbon, the activated carbon separated via the filter stage has no cleaning property, even if the absorption capacity of the activated carbon for pollutants from the wastewater in the contact basin was only partially exhausted. In the known conventional systems therefore relatively much activated carbon is consumed in terms of the amounts of pollutants that are withdrawn from the wastewater. Activated carbon for cleaning wastewater is expensive to buy. In addition, contaminated activated carbon due to the daren adsorbed pollutants u. U. also be disposed of costly.

The object of the invention is to provide a system for treating a fluid with activated carbon, in which the fluid can be withdrawn with low levels of activated carbon large amounts of pollutants.

This object is achieved by a plant of the type mentioned, in which the cleaning device includes a separator for the entrained in the liquid activated carbon, which is acted upon via an inlet opening with the liquid, which is discharged through an underflow opening liquid, with respect to the state at the inlet opening increased concentration of activated carbon particles, and wherein at an overflow liquid with a reduced compared to the state at the inlet opening concentration of activated carbon particles can be discharged.

The concentration of the activated carbon particles in the liquid is understood to be the mass of the activated carbon particles per unit volume of the liquid.

By reintroducing the activated carbon particles in the liquid discharged through the underflow opening, which are withdrawn from the liquid guided through the overflow opening, to the activated carbon application area to purify fluid therein, it is possible to make most use of the adsorbability of activated carbon for pollutants.

For separating the liquid with the activated carbon entrained therein, the separator preferably includes at least one cyclone having a cyclone body surrounding a longitudinally tapered cavity and having a tangential inflow of liquid from the conduit system in the cavity forms an outer vortex, which merges due to the taper of the cavity in an inner vortex, which exits through an opening formed on the housing overflow from the cavity.

The invention is based on the idea that with a cyclone, a large proportion of the activated carbon particles can be separated in the liquid with a small amount of liquid. One idea of the invention is therefore to reintroduce the separated activated carbon particles with a small amount of liquid into the cleaning process for the fluid, so that the not yet completely exhausted cleaning capacity of these activated carbon particles can still be utilized.

It is advantageous if the inlet opens into a cylindrical portion of the cyclone housing and the overflow comprises a projecting into the cylindrical portion of the cyclone housing immersion tube, wherein the cylindrical portion of the cyclone housing, a housing portion connects with a conically tapered inner cross-section which adjoins an underflow opening extends.

The inventors have found in experiments that in a comparison with filters having a characteristic gap size, separated at the same throughput of fluid medium per unit time and the same differential pressure (ie pressure loss) with a separator according to the invention activated carbon particles and also dirt particles can be whose grain size is smaller than the characteristic gap of the filter.

It has been found that the pressure loss for the fluid passed through the separator can be minimized by the inlet having a wall portion aligned with an inner wall of a lid portion of the cylindrical portion of the cyclone body. It is advantageous in particular if the inlet is formed with a inlet opening a and an inlet width b having rectangular opening cross-section. Here, the following values for the ratio a / b of the inlet height a and the inlet width b are advantageous: 1 ≦ a / b ≦ 1.3. It is also advantageous if the immersion depth h _{t of} the dip tube into the cyclone housing exceeds the inlet height a. The ratio of the height h _{z of} the cylindrical section of the cyclone housing and the height h _{k of} the housing section with a conically tapering internal cross section is favorably valid for the ratio h _{z of} the cylindrical section: 1.5 ≦ h _z / h _k ≦ 2.5. The opening angle ε of the housing section with the conically tapering internal cross section in the range 2 ° ≤ ε ≤ 6 ° has proved to be particularly advantageous for the flow behavior of water.

In order to filter out the activated carbon which contains the liquid flowing through the separating device, it is favorable to provide a filter stage in the cleaning device. This filter level can z. B. include a sand filter and / or have a band filter.

The activated carbon application area, the liquid z. B. from a mixing basin and / or an aeration tank. It is advantageous if the separation device for the return of liquid with activated carbon particles is connected to the mixing tank and / or the aeration tank. Conveniently, a circulation pump is arranged with a discharge port in the line system, which is connected to the inlet openings of the separation device. The activated carbon application area can, for. B. include a balancing and contact basin. In particular, the activated carbon application region may have a device for supplying oxidizing air.

The activated carbon application area can, for. B. also contain a trickle device for applying flue gas with liquid is introduced into the activated carbon.

In that the separator includes a plurality of cyclones with a cyclone body surrounding a longitudinally tapered cavity and having a tangential inflow of fluid from the conduit system forming a primary vortex in the cavity due to the tapering of the cavity in a secondary vortex passes, which exits through an opening formed on the housing overflow from the cavity, it is possible to enforce the separator with very large liquid flows. The inventive system can, for. B. in a sewage treatment plant, in a cleaning device for flue gas or in a cleaning device for the exhaust air from a paint shop.

In the following the invention will be explained in more detail with reference to the embodiments schematically illustrated in the drawing.

Show it

1 a sewage treatment plant with a plant for the treatment of dirty water fluid with activated carbon;

2 an enlarged view of the plant for the treatment of dirty water fluid in the sewage treatment plant with a cleaning device for the separation of activated carbon, which contains a plurality of cyclones;

3 the statistical distribution of the particle size of activated carbon used in the sewage treatment plant;

4 the separation curve of a cyclone in the cleaning device;

5 a side view of a cyclone in the separator;

6 a cross section of the cyclone;

7 a longitudinal section of the cyclone;

8th . 9 such as 10 further sewage treatment plants with a plant for the treatment of dirty water fluid with activated carbon; and

11 a cleaning device for flue gas with a system for treating flue gas fluid with activated carbon.

The 1 shows a sewage treatment plant 10 for cleaning wastewater. The wastewater is de sewage treatment plant 10 over a canal 12 fed. The sewage treatment plant 10 has a mechanical pre-cleaning stage 14 , In the pre-cleaning stage 14 The wastewater is passed through a rake or sieve drum to remove coarse contaminants such as rocks, leaves or dead animals from the sewage. The pre-cleaning stage 14 includes a sand trap. This sand trap contains a basin in which coarser sedimentable impurities such. As sand, glass splinters or food and vegetable remains are separated from the wastewater by settling. In the pre-cleaning stage 14 The wastewater is then passed through a primary clarifier. The Pre-treatment tank is designed so that it is penetrated by the wastewater only very slowly. In order to ensure that substances that are not dissolved in the wastewater sink to the bottom of the primary sedimentation tank or slowly rise. The substances deposited and floated in the pretreatment basin in this way are in the pre-purification stage 14 away. These substances are pumped into a digester. There, these substances are stored under exclusion of air, so that they decompose and convert.

In the sewage treatment plant 10 is there a facility 11 for treating fluid in the form of wastewater (dirty water) with activated carbon. The attachment 11 For the separation of the wastewater supplied activated carbon, there are in the system 11 a cleaning device 34 , The attachment 11 contains an activated sludge tank 16 , The aeration tank 16 is with the pre-cleaning stage 14 connected. The aeration tank 16 The wastewater is removed from the pre-purification stage 14 fed. In the aeration tank 16 the wastewater is mixed with air. As a result, a biotic oxidative degradation of the wastewater content of the fresh wastewater is achieved. The carbon compounds in the wastewater are largely degraded by aerobic, ie oxygen-consuming bacteria and other microorganisms to carbon dioxide. Some of these substances are also converted by the bacteria or microorganisms to biomass.

From the aeration tank 16 the wastewater is passed through an intermediate clarifier 18 with a screw pumping station 20 in an aeration tank 22 promoted. In the aeration tank 22 the wastewater is again mixed with air. The aeration tank 22 serves to split off the nitrogen from organic compounds in the wastewater in the form of ammonia by means of bacteria. In the aeration tank 22 reacts the resulting ammonia with the oxygen of the supplied air to nitrate (nitrification).

From the aeration tank 22 the sewage is in the sewage treatment plant 10 in a secondary clarifier 24 directed. The secondary clarifier 24 forms with the aeration tank 22 a process unit. In the secondary clarifier 24 the activated sludge is separated by settling from the wastewater. From the secondary clarifier 24 Part of the sludge accumulating there is passed through a thick matter line 25 in the aeration tank 16 returned (return sludge). This measure serves to control the concentration of microorganisms in the aeration tank 16 sufficiently high. Otherwise, there is a risk that the degradation in the aeration tank 16 is too low.

Most of this with the growth of biomass in the aeration tank 22 accumulating sludge is from the secondary settling tank 24 via a thick matter line 27 for further treatment in a pre-thickener 26 dissipated.

One goal is that the activated sludge has good settling properties. If this is not the case, for example because so-called bulking sludge is formed as a result of the mass growth of filamentary microorganisms, the activated sludge can no longer be readily separated from the wastewater. The formation of bulking sludge can be achieved by connecting small, not or only slightly ventilated additional basins in front of the aeration tank 22 avoid.

In the sewage treatment plant 10 the sewage is removed from the secondary clarifier 24 in a mixing basin 28 directed. In the mixing basin 28 the wastewater is treated with so-called powdered activated carbon. The powdered activated carbon becomes the wastewater in the mixing basin 28 with a metering device 30 fed. The metering device 30 is a measuring device 31 assigned. With the measuring device 31 can the flow of sewage from the secondary settling tank 24 in the mixing basin 28 be monitored. By means of the metering device 31 About 10 to 200 mg of powdered activated carbon per liter of wastewater are fed to the wastewater.

It will be in the sewage treatment plant 10 the mixed with powdered activated carbon wastewater in a balancing and contact basin 32 emotional. The balancing and contact basin 32 is an activated carbon application area. The balancing and contact basin 32 has an indoor and outdoor area. About a culvert, the wastewater from the mixing basin 28 in the interior of the contact pool 32 directed. From there it enters the outer area of the contact basin. The balancing and contact basin 32 has a circulation device. By means of the circulation device, the waste water is circulated there between the inner and the outer region in such a way that in the compensation and contact basin 32 a defined volume of waste water lingers for about 20 to 60 minutes. This ensures that the trace substances contained in the wastewater are deposited on the activated carbon and adsorbed on the activated carbon particles.

The sewage treatment plant contains the activated carbon from wastewater contaminated with pollutants 10 a cleaning device 34 , In the cleaning device 34 is there a separator 36 , The separator 36 includes several cyclones.

The separator 36 has an inlet opening 38 , Through this inlet opening 38 becomes the separator 36 Wastewater is fed to the Contains activated charcoal particles. The separator 36 has an overflow opening 40 , Through this overflow opening 40 gives the separator 36 Wastewater from which such activated carbon particles are separated, which have a characteristic amount a _Max exceeding grain size G. The sewage coming out of the overflow opening 40 leaking, contains about 10% to 30% of the activated carbon particles in a volume of water that the separator 36 is supplied.

The separator 36 has an underflow opening 42 , Through the underflow opening 42 is that wastewater from the separator 36 dissipated, which is the separator 36 not through the overflow opening 38 leaves. The underflow opening 42 the separator 36 is over a line 44 . 46 with the mixing basin 28 and the aeration tank 16 connected. About the line 44 . 46 becomes the mixing basin 28 and the aeration tank 16 Wastewater fed to about 70% to 90% of the activated carbon particles of one of the separation device 36 contains supplied water volume.

The overflow opening 38 is about a pumping station 47 with a sand filter system 48 connected. In the sand filter system 48 the activated carbon particles are in the over the pumping station 47 supplied wastewater separated. The filtered wastewater from the sand filter plant 48 becomes a clear phase buffer 49 directed. The clear phase buffer 49 represents over a channel 51 that in the sewage treatment plant 10 cleaned wastewater ready.

The 2 is an enlarged view of the plant 11 for treating dirty water fluid in the sewage treatment plant 10 with a cleaning device for the separation of activated carbon. In the mixing basin 28 we sewage 33 activated carbon 29 from the metering device 30 fed. About the equalization and contact basin 32 Will that be with the activated carbon 29 treated wastewater of the cleaning device 34 fed. The cleaning device 34 contains a pump 62 , The pump 62 moves the sewage 33 into the separator 36 ,

The separator 36 in the cleaning device 34 contains several cyclones 50 , A cyclone 50 preferably comprises a cyclone housing 52 which is at least partially made of an abrasion-resistant plastic material (in particular of a thermoplastic elastomer, in particular a styrene block copolymer or a thermoplastic polyurethane). In a modified embodiment, the cyclone housing includes 52 at least one section made of a stainless steel. The cyclone housing 52 surrounds a tapered cavity 54 that is in a longitudinal direction 56 extends. The cyclone housing 52 has a feed 58 , The feed 58 opens with an opening 60 in the cavity 54 ,

With the pump 62 in the cleaning device 34 becomes the sewage 33 in the pipe 64 according to the flow direction 66 in the cavity 54 flowed in tangentially. In the cavity 54 this creates an external vortex 67 due to the rejuvenation of the cavity 54 in an interior vortex 68 passes. The inner vertebra 68 passes through a on the housing 52 trained overflow 70 from the cavity 54 out. In the cyclone housing 52 there is an underflow opening 72 , The cyclones 50 are in a container 73 the separator 36 arranged. The container 73 is made of stainless steel. He has a funnel-shaped bottom compartment 74 , a middle compartment 76 and a ceiling compartment 78 on. The underflow opening 72 of every cyclone 50 flows into the floor compartment 74 , The overflow 70 of each cyclone housing 52 has one in the ceiling compartment 78 lying opening 79 ,

The ceiling compartment 78 of the container 72 is via a shut-off valve 80 with the sand filter system 46 connected. The bottom part 74 , the middle part 76 and the ceiling compartment 78 are with layer of ceramic particles 82 coated. This causes the container 72 can not corrode. In addition, this coating ensures 82 in that the container wall is protected against abrasion by dirt particles in the waste water. It should be noted that a chemical resistance and protection of the wall of the container 88 before abrasion can also be achieved by nickel plating or plasma coating.

In every cyclone 50 the cleaning device become the activated carbon particles 90 . 92 separated according to their particle size G. Activated carbon particles 90 with large grain diameter are in a cyclone 50 under the influence of centrifugal force in the external vortex 94 carried outside and with the sewage 35 through the tapered cavity 54 in the cyclone housing 52 to the underflow opening 42 emotional. Activated carbon particles 90 with a small grain diameter are in the cyclone 50 with the inner vertebra 96 added. You get to the wastewater 37 to the overflow of a cyclone 50 ,

The 3 shows with the curve 302 the statistical distribution of the particle size of activated carbon used in the sewage treatment plant. With the curve 304 is shown the integral particle size distribution, ie the proportion of activated carbon particles of a certain size.

und mit der Kurve 402 die Durchlässigkeit

wobei ρ_Z(G) die Schmutzpartikel-Konzentrationsdichte für Aktivkohlepartikel 90, 92 mit einer Korngröße G an dem Zulauf 44 eines Zyklons 50 in der Trennvorrichtung 58 ist. ρ_U(G) bzw. ρ_UE(G) ist die Aktivkohlepartikel-Konzentrationsdichte für Aktivkohlepartikel 86, 87 mit einer Korngröße G an der Unterlauföffnung 72 bzw. der Überlauföffnung 70 eines Zyklons 50. Mittels der Zyklone 50 in der Trennvorrichtung 36 werden die in dem Abwasser mitgeführten Aktivkohlepartikel 90, 92 in Abhängigkeit ihres Korndurchmessers G separiert. Die Trennkorngröße a_K der Zyklone 50 beträgt etwa 15 μm. Dies bewirkt, dass die Konzentration der Aktivkohle in dem Abwasser 35 an der Unterlauföffnung 42 erhöht ist. Demgegenüber ist die Konzentration der Aktivkohle in dem Abwasser 37 verringert, das durch die Überlauföffnung 40 der Trennvorrichtung 36 geführt ist.The 4 shows with the curve 400 the separation efficiency

and with the curve 402 the permeability

where ρ _Z (G) is the particulate matter concentration density for activated carbon particles 90 . 92 with a grain size G at the inlet 44 a cyclone 50 in the separator 58 is. ρ _U (G) or ρ _UE (G) is the activated carbon particle concentration density for activated carbon particles 86 . 87 with a grain size G at the underflow opening 72 or the overflow opening 70 a cyclone 50 , By means of cyclones 50 in the separator 36 are the entrained in the wastewater activated carbon particles 90 . 92 separated depending on their grain diameter G. The separation grain size a _{K of} the cyclones 50 is about 15 microns. This causes the concentration of activated carbon in the wastewater 35 at the underflow opening 42 is increased. In contrast, the concentration of the activated carbon in the wastewater 37 this is reduced by the overflow opening 40 the separator 36 is guided.

Activated carbon particles whose particle size G exceeds the amount a _max do not reach the sand filter system 48 , The sewage leading to the sand filter plant 48 thus contains only activated carbon particles, which have a relatively small grain diameter. In the sewage that flows through the underflow opening 42 the separator 36 is guided, there are essentially only activated carbon particles 90 whose grain size G is greater than the grain size a _max . The sewage at the underflow opening 42 the separator 36 thus contains only relatively few activated carbon particles with a small particle size. The sand filter system 48 has a filter bed 51 with sand 53 as a filter medium.

The 5 is a side view of a cyclone 50 in the separator 36 , The 6 shows a cross section of the cyclone 50 along the line VI-VI 5 , In the 7 is a schematic section of a cyclone 50 in the separator 36 out 1 displayed. The feed 58 in the cyclone 50 opens into a cylindrical section 452 of the cyclone housing 52 , The overflow 70 includes one in the cylindrical section 452 of the cyclone housing 52 protruding dip tube 454 , To the cylindrical section 452 of the cyclone housing 52 closes a housing section 454 with a conically tapered inner cross section. The housing section 454 extends to the underflow opening 72 ,

The feed 58 in the cyclone 50 has one with the inner wall of the lid part 456 of the cylindrical section 452 of the cyclone housing 52 aligned wall section 458 , Here is the feed 58 formed with a an inlet height a and a feed width b having rectangular opening cross-section. The ratio a / b of the inlet height a and the inlet width b is in the cyclone 34 : 1 ≤ a / b ≤ 1.3. The immersion depth h _{t of} the dip tube 454 in the cyclone housing exceeds the inlet height a of the inlet 58 , For the ratio of the height h _{z of} the cylindrical section 452 of the cyclone housing 52 and the height h _{k of} the housing section with a conically tapered inner cross section is: 1.5 ≦ h _z / h _k ≦ 2.5. For the opening angle ε of the housing section with the conically tapered inner cross-section, the following applies: 2 ° ≤ ε ≤ 6 °.

The 8th shows a second sewage treatment plant 510 for cleaning wastewater. As far as the modules of the sewage treatment plant 510 the assemblies of the sewage treatment plant 10 from the 1 These are in the 8th with around the number 500 increased reference numbers indicated. In the plant 511 of the sewage treatment plant 510 for the treatment of waste water is the underflow opening 542 the separator 536 over a line 544 with the aeration tank 516 connected. About the line 544 can be treated with activated carbon particles wastewater in the aeration tank 516 to be led back. The cleaning device 534 for the separation of activated carbon particles loaded with pollutants from the wastewater contains in addition to the separator 536 An institution 564 for the treatment of waste water with activated carbon flocculant in the form of ferric chloride and / or aluminum sulfate. Besides, there is in the cleaning device 534 An institution 566 , with which the wastewater in the sand filter plant 548 Polyelectrolyte can be added.

The 9 shows a third sewage treatment plant 610 for cleaning wastewater. As far as the modules of the sewage treatment plant 610 the assemblies of the sewage treatment plant 10 from the 1 These are in the 9 with around the number 600 increased reference numbers indicated. In the plant 611 of the sewage treatment plant 610 for the treatment of waste water is the underflow opening 642 the separator 636 over a line 644 with the mixing basin 632 connected. About the line 644 Can be treated with activated carbon particles wastewater in the mixing tank 634 to be led back.

The 10 shows a fourth purification plant 710 for cleaning wastewater. As far as the modules of the sewage treatment plant 710 the assemblies of the sewage treatment plant 10 from the 1 These are in the 8th with around the number 700 increased reference numbers indicated. In the plant 711 of the sewage treatment plant 710 for treating wastewater is between the secondary clarifier 724 and the mixing basin 728 a separator 725 arranged containing one or more cyclones for the separation of dirt particles from the wastewater. These cyclones have one above with reference to the 5 . 6 and 7 described structure. By means of the cyclones in the separator 725 the sewage is removed from the secondary clarifier 725 supplied wastewater separated into a first wastewater phase, in the the pollutant concentration is increased, and in a second wastewater phase, in which the concentration of dirt particles is reduced. In the plant 710 becomes the first wastewater phase through a thick matter line 727 from the separator 725 in the aeration tank 716 recycled. The second wastewater phase from the separator 725 will be in the mixing basin 728 directed.

The 11 shows a device 810 for cleaning flue gas 824 , The device 810 contains a plant 811 for treating fluid in the form of flue gas 824 with activated carbon 829 that with aqueous medium 833 is offset.

In the plant 811 there is a mixing basin 828 , The attachment 810 has a facility 830 for supplying activated carbon particles 829 in the mixing basin 828 with a metering device. In the mixing basin 828 The activated carbon particles can be mixed with water as an aqueous medium 833 be mixed for the trickle plant. The aqueous medium for the Rieselanlage is with a pump 804 through a pipe 802 from the mixing basin 828 into a treatment boiler 805 emotional. In the treatment kettle 805 is added to the aqueous medium with atmospheric oxygen, with a blower 808 over a line 806 is supplied.

The device 810 has a feed channel 820 for the flue gas. By means of a blower 822 becomes the flue gas 824 through the feed channel 820 into an activated carbon application area 826 directed. In the activated carbon application area 826 is a trickle plant 818 arranged. The trickle plant 818 has wires 864 for the activated carbon mixed with aqueous medium 833 , In the activated carbon application area 826 can the flue gas 824 over in the wires 864 arranged sprinklers 826 with aqueous medium 833 from the mixing basin 828 be charged.

In the activated carbon application area 826 can the flue gas 824 Pollutants are removed due to adsorption in the activated carbon particles, resulting in the from the sprinklers 826 flowing aqueous medium 833 are located. The purified of pollutants flue gas is in the device 811 from the activated carbon application area 826 by a cooling device 852 guided. That in the cooler 852 moisture-free flue gas is then passed through a duct 854 over a fireplace 856 at an exit opening 858 released.

To the aqueous medium 833 in the plant 811 Extracting activated carbon particles containing pollutants is to the treatment vessel 805 a cleaning device 834 with wires 812 . 814 connected. The cleaning device 834 contains a separator 836 with a feed opening 838 , an overflow opening 840 and an underflow opening 842 , In the separator 836 can activated carbon particles from supplied aqueous medium 810 be separated. This is done by means of a line 814 arranged pump 816 the aqueous medium 833 through the separator 836 and the treatment kettle 805 circulated. The separator 836 contains several cyclones. It has the above-described construction of the separation device 36 out 2 ,

By means of the cyclones in the separator 836 become the in the aqueous medium 810 entrained activated carbon particles 890 . 892 separated depending on their grain diameter G. The separation particle size a _{K of} the cyclones is about 15 μm.

Activated carbon particles whose grain size G exceeds the amount a _Max are passed through the overflow opening 840 the separator 836 into the processing bunker 805 directed. That at the underflow opening 842 the separator 836 provided aqueous medium 810 On the other hand, it will have a filter system 848 guided. Here contains the aqueous medium 810 Activated carbon particles whose grain size G is greater than the grain size a _Max . These activated carbon particles are with the filter system 848 from the aqueous medium 810 removed and into a silo 849 promoted, in which the contaminated with activated carbon particles can be stored until disposal.

In summary, the following preferred features in particular should be noted: An attachment 11 . 511 . 811 for treating fluid 33 . 824 with activated carbon 29 . 829 contains a device 30 . 530 . 830 for the introduction of activated carbon 29 . 829 in liquid 33 . 833 , in the plant 11 . 511 . 811 is there an activated carbon application area 32 . 532 . 832 in which the in the liquid 33 . 533 . 826 introduced activated carbon 29 . 829 in the fluid to be treated a cleaning effect by adsorption and / or absorption of pollutants from the fluid 33 . 824 can unfold. The attachment 11 . 511 . 811 includes a cleaning device 34 . 534 . 834 for the separation of activated carbon 29 . 829 with the fluid 33 . 824 extracted pollutants from the liquid 33 . 833 , The cleaning device 34 . 534 . 834 contains one via an inlet opening 38 . 538 . 838 with liquid 33 . 833 applied separation device 36 . 536 . 836 for in the liquid 33 . 833 entrained activated carbon 29 . 829 , The separator 36 . 536 . 836 passes through an overflow opening 40 . 540 . 840 liquid 33 . 533 . 833 starting in which no activated carbon particles 92 with a grain size G exceeding a characteristic amount a _Max . At an underflow opening 42 . 542 . 842 represents the separator 36 . 536 . 836 liquid 33 . 533 . 833 ready the activated carbon particles 90 that is through the overflow opening 40 . 540 . 840 guided liquid 33 . 533 . 833 are withdrawn.

Claims (15)

Investment ( 11 . 511 . 811 ) for treating fluid ( 33 . 824 ) with activated carbon ( 29 . 829 ), with a facility ( 30 . 530 . 830 ) for the introduction of activated carbon ( 29 . 829 ) in liquid ( 33 . 833 ), with an activated carbon application area ( 32 . 532 . 832 ?), in which the liquid ( 33 . 833 ) introduced activated carbon ( 29 . 829 ) in the fluid a cleaning effect by adsorption and / or absorption of pollutants from the fluid ( 33 . 824 ) and with a cleaning device ( 34 . 534 . 834 ) for the separation of activated carbon ( 29 . 829 ) from the liquid ( 33 . 833 ) including the fluid ( 33 . 824 ) pollutants, characterized in that the cleaning device ( 34 . 534 . 834 ) a separating device ( 36 . 536 . 836 ) for in the liquid ( 33 . 833 ) carried activated carbon ( 29 . 529 . 829 ), which via an inlet opening ( 38 . 538 . 838 ) with the liquid ( 33 . 833 ) is acted upon, wherein by an underflow opening ( 42 . 542 . 842 ) Liquid ( 33 . 833 ) is dischargeable, with a relation to the state at the inlet opening ( 38 . 538 . 838 ) increased concentration of activated carbon particles ( 92 ) and where at an overflow opening ( 40 . 540 . 840 ) Liquid ( 33 . 833 ) with a reduced compared to the state at the inlet opening concentration of activated carbon particles ( 92 ) is dissipatable. Installation according to claim 1, characterized in that the through the underflow opening ( 42 . 542 . 842 ) discharged liquid ( 35 ) Activated carbon particles ( 92 ), which through the overflow opening ( 40 , Activated carbon particles ( 92 ), which through the overflow opening ( 40 . 540 . 840 ) guided liquid ( 37 ) and the activated carbon application area ( 32 . 532 . 832 ) are fed again. Plant according to claim 1 or 2, characterized in that the separating device ( 36 ) at least one cyclone ( 50 ) with a cyclone housing ( 52 ) having a longitudinally tapered cavity (FIG. 54 ) and that one inlet ( 58 ) for tangential inflow of liquid ( 60 ) from a pipeline system ( 64 ), which in the cavity ( 54 ) a primary vertebra ( 67 ) due to the rejuvenation of the cavity ( 54 ) into a secondary vortex ( 68 ) passing through one on the housing ( 52 ) formed overflow ( 70 ) from the cavity ( 54 ) exit. Plant according to claim 3, characterized in that the inlet ( 58 ) in a cylindrical section ( 452 ) of the cyclone housing ( 52 ) and the overflow ( 70 ) in the cylindrical section ( 452 ) of the cyclone housing ( 52 ) protruding dip tube ( 454 ), wherein on the cylindrical portion ( 452 ) of the cyclone housing ( 52 ) a housing section ( 454 ) adjoins with a conically tapered inner cross-section which extends to an underflow opening ( 72 ). Plant according to claim 4, characterized in that the inlet ( 58 ) one with an inner wall of a cover part ( 456 ) of the cylindrical section ( 452 ) of the cyclone housing ( 52 ) aligned wall section ( 458 ) and is thereby formed with a inlet height a and an inlet width b having rectangular opening cross section, wherein for the ratio a / b of the inlet height a and the inlet width b applies: 1 ≤ a / b ≤ 1.3, wherein the immersion depth h _{t of} the dip tube ( 454 ) in the cyclone housing ( 52 ) exceeds the inlet height a, wherein for the ratio of the height h _{z of} the cylindrical portion ( 452 ) of the cyclone housing ( 52 ) and the height h _{k of} the housing section ( 454 ) with a conically tapered inner cross-section: 1.5 ≦ h _z / h _k ≦ 2.5, and wherein for the opening angle ε of the housing section ( 454 ) with the conically tapered inner cross section: 2 ° ≤ ε ≤ 6 °. Installation according to one of claims 1 to 5, characterized in that the cleaning device ( 34 . 534 . 834 ) a filter stage ( 48 . 548 . 848 ) for filtering activated carbon ( 92 ) from the separating device ( 36 . 536 . 836 ) flowing liquid ( 33 . 533 . 833 ) by flowing at least one of the liquid-permeable filter medium ( 35 . 535 . 835 ) having. Plant according to claim 5, characterized in that the filter stage ( 48 ) contains a sand filter and / or that the filter stage ( 848 ) contains a bandpass filter. Installation according to one of claims 1 to 7, characterized in that the activated carbon application area ( 32 . 532 . 832 ) the liquid ( 33 . 833 ) from a mixing basin ( 28 . 528 . 828 ) and / or an aeration tank ( 22 . 522 ) and / or any cleaning precursor, the cleaning device ( 34 . 534 ) for the return of liquid to the mixing tank ( 28 . 528 . 828 ) and / or the aeration tank ( 22 . 522 ) and / or any cleaning precursor is connected. Installation according to one of claims 1 to 8, characterized in that in the line system ( 64 ) a circulation pump ( 62 ) with a drain connection ( 63 ) arranged with the inlet openings ( 88 ) of the separating device ( 36 ) connected is. Installation according to one of claims 1 to 9, characterized in that the activated carbon Application area a compensation and contact basin ( 32 ) contains. Plant according to claim 10, characterized in that the activated carbon application area ( 32 ) An institution ( 9 ) for supplying oxidizing air. Plant according to claim 10 or 11, characterized in that the activated carbon application area ( 32 ) a trickle device ( 818 ) for the application of flue gas ( 824 ) Contains liquid, is introduced into the activated carbon. Installation according to one of claims 1 to 12, characterized in that the separating device ( 30 ) several cyclones ( 50 ) with a common cyclone housing ( 52 containing a longitudinally tapered cavity (FIG. 54 ) and that one inlet ( 58 ) for tangential inflow of liquid ( 60 ) from the piping system ( 64 ), which in the cavity ( 54 ) a primary vertebra ( 68 ) due to the rejuvenation of the cavity ( 54 ) into a secondary vortex ( 68 ) passing through one on the housing ( 38 ) formed overflow ( 54 ) from the cavity ( 42 ) exit. Sewage treatment plant ( 10 . 510 . 610 . 710 ) with a plant ( 11 . 511 . 611 . 711 ) according to one of claims 1 to 13. Cleaning device ( 800 ) for flue gas ( 824 ) with a system according to one of claims 1 to 13.

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