DE3934874C2 - Process for disposing of a separation plant and separation plant - Google Patents

Description

The invention relates to a method in addition to ordered claims 1 and 2 specified type and a Separation plant of the type specified in claim 4.

In commercial separation systems, the perishes environmentally friendly disposal. At the usually practiced vacuuming the whole with the separator that has been torn open In terms of content, the disposal effort is too great disposal volume is inappropriate. Disposing leads to a strong odor nuisance for the environment. The Disposing of all of the liquid is expensive and uneconomical. There is a lot of manual work involved in disposal of the operators needed, the expensive and time is complex.

According to literature reference Hosang / Bischof, wastewater technology; 8th edition, B.G. Teubner-Verlag Stuttgart (1984), p. 378, 379 is used in the treatment of sewage sludge from Klär plants thickening, dewatering and drying the sewage mud applied. This procedure is for commercial used separation systems too expensive.

DE-C 31 22 131 is a conveyor and drainage snail with a compression section for removal and for dewatering solids from liquids, esp special from channels of sewage treatment plants, known at  a compression section by contraction of the Snail shell is formed.

From DE-A-31 07 256 for separating solids, that swim in a liquid level, a för der- and drainage screw with a compression cut known, the compression section through a continuously decreasing slope of the worm de is financed.

From US-A-4 701 266 is a screw conveyor for in oily Solids containing liquid are known, the Schnec cone housing is oversized compared to the snail, so that the oil when pumping the solids in the an auger arranged laterally to an increase can run back.

The invention is based, an association Easy and environmentally friendly process for disposal of the material to be separated in separation plants and one for Carrying out the method suitable separation plant create.

The task is presented with the process variants according to the independent claims 1 and 2 or with a separation system according to claim 4 solved.

Since the material to be discharged through the action of heat in pasto se or by breaking up into crumbly consistency is brought, it is easy with the screw conveyor Discharge from the liquid, by compression is drained. Compressing is due to the reduction in surface area the development of odors inhibits.  

In the process variant with forced cooling drained by forced cooling. Besides, that will Well solidified so far that it is easy to carry off leaves. In the case of forced cooling, the low tem temperature also suppresses the development of odors. The discharged good can be used in both processes Fill variants into handy containers or containers len, the transfer of the goods into containers without environmentally unpleasant smell occurs.

In the separation plant, the screw conveyor carries this in a consistency suitable for discharge effective out. By the movement of the screw conveyor or of the receptacle in the form of a trunk in the separation chamber the entire liquid level can be painted. In the compression section, residual water is squeezed out if the good through a relatively small, against smell leakage discharge opening that is easy to secure in continuous Strand is removed. The strand can be easily in Fill containers. The screw conveyor bean takes up little space and is insensitive to interference gene.

This can be flanked by the two process variants Good by lifting the liquid level to the Dispose of appropriate height, taking all dings the liquid, which anyway to drain into the further sewer system is determined in the Separation plant remains.

A rapid disposal is ge in the embodiment ensured according to claim 5. Because the screw conveyor practically continuously, it is important that  regardless of their position in Ab discharge chamber always available through which the strand of the good comes out.

In the embodiment according to claim 6 favors the Suction in the proboscis the conveying movement of the goods Auger. The suction nozzle movement is manual or automatically controlled from outside the separation chamber. The proboscis can be the entire fluid level to brush.

In the embodiment according to claim 7, the deliver Breaking devices and the feeders the goods to the Auger. The breakers can be mecha nischer, hydraulic (with crushing jets), pneumati shear (with compressed air jets) or electrical type (with vibrations or high-energy rays).

In the embodiment according to claim 8, the good shatters through the crushing links or the milling machine and prepared for removal. The crushing rolling couple or the milling machine automatically move in the parting decamper back and forth.

In another separation plant according to claim 9 zer the conveyor element breaks the layer or mills parts out to feed the auger and the crumbly consistency desired for disposal produce. With a heating also the tendency of Guts counteracted, on movable or rigid compo to stick to a movement or a movement that is too strong To oppose resistance.

In the embodiment according to claim 10, the För  derelement thanks to the negative pressure pieces and chunks and conveys them over the scraper into the collecting trough from which it is discharged. The För The element can be used with mechanical crushing or milling elements on the surface.

In the embodiment according to claim 11, the good brought into pasty consistency by the action of heat, so it's easy to pull off. If necessary ar continuously processes the puller to make one to avoid heavy layering, but slowly to to undesirably swirl the liquid avoid. The bucket wheel or the bucket cylinder breaks on the one hand solid layer components and takes chunks into the collecting trough, on the other hand the residual water runs water, expediently in the gutter Ent water openings to the separation chamber are provided.

According to claim 12, at least parts of the funding worm heated to the disposal resistance of the Gu reduce it and continue to expel residual water.

In the deposition system according to claim 13, the first step compulsory good through the cooling device cools and solidifies so that it deals with the out can carry the carrying device.

In the embodiment of claim 14, suspended matter Fe or starch from the sludge trap with the conveyor cutter ke, which may also be used to dispose of the goods in Liquid level, periodically disposed of, is used drained and disposed of in an environmentally friendly manner Formed strand. The two snail parts cooperate alternatively or continuously in order to obtain the goods from  Sludge trap and the liquid level dispose.

In the embodiment according to claim 15 is by perforated inner tube of residual water pushed out, see above that it runs back into the separation chamber.

The version is assembly-technical and easy to maintain rungsform according to claim 16. The exposed drive motor is easy to cool and does not get dirty. The wave drives the snail up to the mud trap. Two The printing plates are already covered by the conveyor Kung the screw element produces a compression.  

Based on the drawing, embodiments of the subject of the invention explains:

Show it:

Fig. 1 shows a schematic longitudinal section of a deposition tool,

Fig. 1a, 1b show two variants detail to Fig. 1,

Fig. 2 shows another detail variant,

FIGS. 3a, 3b show two variants of detail, in cross-section,

FIG. 3c is a side view of a detail of the Fig. 3a and 3b,

Fig. 4a, 4b another detail variant in two mating views

Fig. 5 is a schematic sectional view of another embodiment of a deposition tool,

Fig. 6 is a sectional view of another embodiment,

FIG. 6a, 6b show two variants of detail to Fig. 6, on an enlarged scale,

Description Fig. 7a, 7b two associated views of a further execution,

Fig. 8 is a partial section of another embodiment,

Fig. 9 is a partial section of a further embodiment and

Fig. 10 shows a schematic section of another embodiment.

A grease separator F according to FIG. 1 has a box-like housing 1 with a left-hand inlet Z for liquid contaminated with material to be separated and a right-hand outlet A for the liquid removed from the material. Baffles P and partition walls T separate the individual sections of the Fettab separating system F from one another and ensure that 2 solids settle in a sludge trap chamber S in a funnel-shaped sludge trap, while the separating material 4 in is deposited in a separating chamber K on the liquid level 3 indicated by 3 The shape of a solidified layer remains. The cleaned liquid is indicated at 5 . In the outlet A, a shut-off organ is indicated at 6 , which can optionally be actuated to control the level of the liquid level 3 in order to raise the liquid level 3 .

In the housing 1 , an approximately horizontally extending screw conveyor 7 is connected in egg nem connection area 9 to an approximately vertically extending screw conveyor 8 .

The horizontal screw conveyor 7 is connected to the vertical screw conveyor 8 in a connecting area 9 . The vertical screw conveyor 8 be sitting in the sludge trap 2 receiving opening for the sludge located there. The screw conveyor 7 , which is formed in the separation chamber K between the baffles P with an upwardly open channel 11 and between the left baffle P and the connecting region 9 with a closed tubular body, contains a screw element 12 which is driven by a drive motor 15 a . If necessary. the horizontal screw conveyor 7 on the liquid level 3 can be moved back and forth. In the vertical screw conveyor 8 , a central shaft 13 is provided for a screw element 14 , which is driven by a drive motor 15 and the material conveyed by a discharge clip 16 outside the housing 1 to a filling system R shown in FIGS. 1a and 1b promotes. The outside of the housing 1 end of the screw conveyor 8 is equipped with an outer tube X and an inner tube 1 , between which there is an annular chamber 21 open to the separation chamber K. In this end, a compression section 18 is further provided in the screw conveyor 8 , which is limited by two spaced plates 19 , of which the upper can be loaded by springs 20 . In the inner tube I perforations or holes 17 are provided, through which in the compression section 18 expressed residual liquid is pressed into the annular chamber 21 and from there runs back into the grease separator system F, so that in the discharge 16 a practically homogeneous strand of material 4 to be disposed of is present. The material 4 is brought from the layer in the separation chamber K from the conveyor screw 7 to the screw conveyor 8 and then disposed of upwards. If necessary. disposal is supported by actuating the shut-off element 6 , so that the solidified layer of the material 4 can be more easily absorbed by the screw conveyor 7 . Furthermore, it is possible to provide breakers or heating devices, not shown, in order to bring the material into a pasty or crumbly consistency for disposal, which simplifies the screw conveyors, in particular the screw conveyor 7 , to remove the material.

According to FIG. 1a, the material emerging from the screw conveyor 8 in strand-like form is pressed from the discharge nozzle via an odor-tightly closed conveying hose 67 to odor-tightly connected individual containers 68 , which are expediently closed with quick-release fasteners on the hose 67 . As an alternative to this, the discharge nozzle 16 is extended according to FIG. 1b and is formed as a store for a supply 23 from a tubular casing 22 which, like in sausage production, is filled with the strand of the goods to be disposed of and is interrupted by closure elements 24 at predetermined intervals. Between two closures 24 there is then an easy-to-dispose section of material which can be carried away by the trolley 25 .

It is of course also conceivable to convey the material to be disposed of directly into a large container or a disposal trolley via the hose 67 or the strand 22 , without any odors being able to escape to the outside.

Parts of the screw conveyors 7 , 8 and possibly also the discharge nozzle 16 can be heated in order to prevent blockages caused by the solidifying strand of material.

In the embodiment according to FIG. 2, a screw conveyor 26 located outside the housing 1 is connected to a suction nozzle 27 in the separation chamber K, which, if appropriate (not shown), is subjected to negative pressure from the layer of the material 4 broken up in a manner not shown via a suction opening 28 sucks. The proboscis 27 is flexible and extendable and can be moved with a movement device, not shown, in the direction of the arrow 29 over the liquid level 3 in order to dispose of the entire good.

According to FIG. 3a, a rotating body conveying element 30 can be rotated about an axis in the separation chamber (arrow 32 ) and at the same time can be moved back and forth over the liquid level (arrow 31 ). The conveying element 30 has on its upper surface scoops, bowls and depressions 34 , with which it breaks the material in the layer into chippings like excavators or cutters and feeds them to a screw conveyor 37 . The screw conveyor 37 works in a collecting channel 36 , which is connected via a bracket 35 to the rotating body 30 to a common movement. According to FIG. 3c, the collecting channel 36 , which is open at the top, is formed towards the end towards a disposal opening 40 from the separating chamber at 38 , in order to compress the material conveyed by the screw element 37 in this section of the screw conveyor and thereby residual water through perforations 17 to drive out. The channel 36 is connected via a flexible pressure hose 39 to the disposal opening 40 , which allows the reciprocating movement of the unit from the conveyor element 30 and the screw conveyor 37 . The reference H indicates that at least parts of the screw conveyor 37 can be heated.

In the embodiment according to Fig. 3b, the conveying member 30 a is a hollow cylinder with a suction ports 33 and a negative pressure from the inside. The surface of the conveying element 30 a is assigned a scraper 58 which brings entrained and entrained chunks of the material 4 into the collecting trough 36 , where they are removed by the screw conveyor 37 . Advantageously, at least a part of the inner circumference of the conveying element 30 a is shielded from the negative pressure by a cover 57 , so that the negative pressure is only effective where the lumps of material have to be taken along. At the end of the collecting trough 36 , the arrangement shown in FIG. 3c is again provided.

Referring to FIGS. 4a and 4b, a rotating body and conveying element 41 is provided, which is formed as a cylinder with blades, milling, or wells 43 and interstices therebetween 44th The conveying element 41 is rotated in the direction of the arrow and additionally moved back and forth in the direction of arrow 43 in the separating chamber, tearing chunks out of the good layer 4 and throwing them through the intermediate spaces 44 into a collecting channel 45 arranged on the inside. The axis of rotation of the conveying element is designated 42 . The collecting trough 45 is inclined towards the end for disposal and is in turn connected to the disposal opening 40 via a flexible discharge hose. It is also conceivable to move the conveying element 41 back and forth like a fan over the liquid level.

Flanking could also be the conveying element 30 a as shown in FIG. 3b on its upper surface with crushing elements to favor the chunk formation from the fat layer.

In the embodiment according to FIG. 5, a pulling device 46 is provided in the deposition chamber K, which operates in the manner of a conveyor belt parallel to the liquid mirror 3 and carries pulling elements 47 penetrating into the material 4 . The puller works in the direction of a rising towards the liquid level 3 threshold 48 , which has passages 49 to an outflow chamber 50 for the residual water and then extends into a collecting container 52 , which is provided with a heater H, if necessary Keep liquid collected there. A heater H can also be provided in the pull-off device 46 in order to facilitate the work of the pull-off elements 47 .

In the heatable collecting part 52 , a residual water outlet 54 can be provided with a float control 56 , in order to be able to periodically remove long residual water via the overflow threshold 48 before the liquefied material 4 is brought through an outlet 55 in the container. The puller 46 could also run slowly during the operation of the separating system in order to prevent the formation of a rigid or too thick layer of the material 4 and to transfer the material continuously into the heated collecting part 52 , from where it is disposed of periodically and with an odor-proof supply can.

In the deposition of FIG. 6 in the housing 1 in the deposition chamber K a screen plate 59 can be raised by means of a lifting device 60 arranged. Above the solidified material 4 movable elements 61 are provided up and down cooling elements. If necessary. spray nozzles 63 could also be provided for introducing a cooling medium (liquid or gas or a chemical solution). In the height range of the separation chamber K, in which the layer of material 4 lies before disposal, the walls are expediently equipped with a heater H in order to be able to release the layer from sticking. At the level of the disposal opening 40, a clearing blade 64 with an actuating sinner 65 is arranged on the opposite side. For disposal, the layer of material 4 is first raised to the height shown and then pushed out by means of the clearing blade 64 after it has previously been solidified by forced cooling. In the case of forced cooling, residual water is also largely expelled, which runs down through the sieve plate 59 . To raise the layer, the liquid level 3 can also be temporarily raised. If the material to be separated tends to solidify into a solid block anyway, the cooling devices 61 and 63 can also be omitted.

According to Fig. 6a, the sieve plate 59 can be equipped with holes 66 , over which mushroom-shaped parts 66 a stand, which form a support for the material and the residual water in the direction of an arrow 69 th drainage. According to Fig. 6b are above the sieve openings 66 of the sieve plate 59 From shield caps 70 with an inclined rise and a flat top surface are provided, which create a contact surface for the goods 4 and allow the residual water to flow undisturbed.

In the embodiment of FIGS. 7a and 7b, an inclined, conveyor belt-like discharge device 71 is arranged in the separating chamber, which is equipped with shovels or bowls, both the material from the sludge trap 2 and the material 4 on the liquid level obliquely upward to the disposal opening Promote 40 , from the odor-tight collection part 52 leads via a funnel to containers 73 on trolleys 25 . The collecting part can in turn be heated. In the deposition chamber other break-up device can also be provided for the material 4 present in the layer. The discharge device 71 has its own drive motor 75 and conditions 74 with which it can move back and forth on wheels 77 on rails 78 laid in the ceiling of the separation chamber in the direction of a double arrow 76 in order to cover the entire liquid level and the sludge trap 2 .

In the embodiment according to FIG. 8, several devices are provided in the separation chamber in order to dispose of the good 4 . A breaking device 79 with breaking elements 82 can be lowered from the ceiling into the material 4 by means of cylinders 80 . Compared to the discharge opening 40 , the clearing blade 64 can be displaced by cylinders in the direction of a double arrow in order to bring the goods, which may have been raised by a level control N, to a screw conveyor 81 provided in the region of the discharge opening 40 . The break-open elements 82 could also be jet nozzles or mechanical elements that rotate or that break the layer with vibrations. It would also be conceivable to instead of the clearing plate 64, the breaker 79 can be lowered and rotatably supported in order to first break the layer of material into chunks and then set it into a rotating movement, so that the chunks on the liquid are moved into the conveyor screw 81 .

In the embodiment according to FIG. 9, a suction pipe 63 is attached in an odor-tight manner in the ceiling of the separation chamber K and is connected to a suction head 85 via a flexible connecting hose 84 . The suction head 85 is moved up and down from the outside in the direction of a double arrow by means of a holder 86 under handles 87 in order to be able to suction the material and to perform the movements necessary both for breaking up the layer and for complete disposal.

In the embodiment according to FIG. 10, an inlet pipe 88 reaching to the bottom is provided, which can be charged with hot or cold wash water 90 via a shut-off element 89 in order to effect level control N of the liquid level 3 . On the ceiling of the separation chamber K, a bell 91 is movable, in which a strong magnet 92 is arranged, which can move a suction head 94 with a spacer 93 either over the liquid speed mirror. The suction head 94 is connected by a flexible and pullable hose 95 with a fixed suction pipe socket 83 a related party. With the bell 91 , the suction head 94 can be moved in practically all directions of movement (arrows 96 ) in order to pump the material to be disposed of into the sam melteil 52 , which is heated by a heater H to an elevated temperature and thus in pasty consistency holds. The goods are then periodically disposed of by the collecting part 52 in the usual way. The outlet of the separation chamber is expediently shut off during disposal so that the level control is not impaired.

Claims (16)

1. A method of disposing of separating material from a fat or starch separating system, in which the material is discharged with liquid in the system, characterized in that the solidified material to be worn out is broken first mechanically to crumbly consistency or by heating in pasty Bring consistency and then strained, drawn or promoted and dewatered under compression. 2. Process for the disposal of separated material from a Grease or starch separation system, in which the good at liquid in the system is discharged, characterized in that solidifiable good for discharge first drained by forced cooling and brought into solidified consistency and then in chilled ter solidified consistency discharged from the plant becomes. 3. The method according to claims 1 or 2, characterized ge  indicates that the property in the system previously under Raising the liquid level by blocking an off running the system and / or supply of cold or hot water is lifted into the system. 4. Separation plant for grease or starchy wastewater with at least one separation chamber in which the material to be separated settles in the liquid level and / or at the bottom in a sludge trap, and with at least one discharge device working to an overhead discharge opening of the separation chamber, characterized in that the discharge device has at least one conveyor screw ( 7 , 8 , 26 , 37 , 81 ) with a compression section ( 18 , 38 ) for the good ( 4 ), and that the conveyor screw ( 7 , 8 , 26 , 37 , 81 ) or at least one receiving part ( 27 , 30 , 30 a) of the screw conveyor in the separation chamber (K) can be moved back and forth. 5. Separation plant according to claim 4, characterized in that the screw conveyor ( 37 ) either via a flexible hose ( 39 ) with a single discharge opening ( 40 ) or directly with a continuous movement of the screw conveyor ( 37 ) or from several window-like Partial openings composite discharge opening cooperates. 6. Separation plant according to claim 4, characterized in that the receiving part ( 27 ) is a suction nozzle beatable with suction power with manual or automatic motion control ( 29 ). 7. Separation plant according to claims 4 to 6, characterized in that in the separation chamber (K) break-open devices ( 79 ) for solidified in a layer material ( 4 ) and optionally feeder ( 64 ) for broken-up consistency broken material ( 4 ) for conveyor screw ( 81 ) are provided. 8. Separation plant according to claim 7, characterized net that the breakers at least one crusher element, preferably a pair of crushing rollers with each other intervening in the good layer and the funding snail feeding crushing members, or a back and forth movable cutter. 9. Separation plant according to claim 7, characterized in that a bucket wheel, bucket or conveyor cylinder-like and mainly penetrating from above into the material layer, driven to rotate, to the screw conveyor ( 37 ) promoting conveying element ( 30 , 30 a) is provided that is adjustable in height and at least partially heated. 10. Separation plant according to claim 9, characterized in that the conveying element ( 30 a) inside can be acted upon by suction pressure and is formed with an adhesive surface for the material and for reciprocating in the separating chamber, and that the adhesive surface is above half of the Liquid level, a scraper ( 58 ) and a, preferably heatable, collecting channel ( 36 ) in which the screw conveyor ( 37 ) is arranged are assigned. 11. Separation plant according to at least one of claims 4 to 10, characterized in that in the separating chamber (K) a heating device (H) for the material and a pull-off device ( 46 , 41 ) movable via the liquid level ( 3 ) with at least one Conveying element ( 47 , 43 ) are provided for material ( 4 ) made pasty by the action of heat, and that the pulling device ( 46 , 41 ) is a rotatable scoop wheel or a scoop cylinder with scooping cups, to which an inner or outer collecting channel (above the liquid level) 45 ) is assigned. 12. Separation plant according to at least one of claims 4 to 10, characterized in that the screw conveyor ( 7 , 8 ) is provided with a heater for an active and / or a passive screw element. 13. Separation plant for carrying out the method according to claim 2, characterized in that a below the good ( 4 ) reaching, platform or conveyor belt-like carrying device ( 59 ) and a, preferably acting on the good from above, cooling device ( 61 , 63 ) are provided. 14. Separation plant according to claim 4, characterized in that the screw conveyor ( 8 ) from the funnel-shaped sludge trap ( 2 ) to the discharge opening ( 40 ) it stretches and is formed, and that the screw conveyor ( 7 , 8 ) one in height of the liquid speed mirror ( 3 ) approximately horizontal screw part ( 7 ) and one of the sludge trap ( 2 ) upright through the discharge opening ( 40 ) extending screw part ( 8 ), and that the screw parts ( 7 , 8 ) are connected to each other in such a way that either a screw part ( 7 ) or ( 8 ) can be separated, the compression section ( 18 ) being provided in the upper, outside of the separation chamber (K) end region of the conveying screw and connected to a container or strand filling system (R) in an odor-tight manner. 15. Separation plant according to claim 14, characterized in that the screw conveyor ( 7 , 8 ) at least in the compression chamber (K) projecting compression section ( 18 ) has a double tube housing with a water-permeable, preferably perforated, inner tube (I) and a tight outer tube (X), and that an annular chamber ( 21 ) formed between the outer and inner tubes (X, I) is formed as water return to the separation chamber (K). 16. Separation system according to claims 14 and 15, characterized in that the screw conveyor ( 7 , 8 ) is assigned a drive motor ( 15 ) for a vertical screw element ( 14 ) and the screw element with a shaft ( 13 ) passing through the compression section ( 18 ) ) drives, and that in the compression section ( 18 ), preferably spring-loaded, axially spaced-apart pressure plates ( 19 ) and an outlet pipe ( 16 ) branching off to the container or line filling system (R) are provided.