DE102004055981A1 - Sludge-scraping and -collecting system, especially for a sewage plant, comprises a reversible slide running on a rail on the bottom of the processing tank and fitted with scraper arms which are raised when the slide returns - Google Patents

Abstract

A sludge-scraping and collecting system with a central guide rail on the bottom of processing pond with a cavity at one end for collecting sludge, comprises a slide running on the rail and fitted with scraper arms on each side, a system for raising the scrapers for reversal and lowering them for the next pass, a reversible drive above the pond and a slide-pulling mechanism. A device (D1) for scraping up and collecting sludge, comprises: (a) a guide rail running through a central section (between the sides) on the bottom of a rectangular processing pond having front, back and side walls and a cavity at one end; (b) a slide with wheels, running backwards and forwards along the rail and fitted with a scraper which scrapes off the sludge on either side of the rail and gathers it towards the cavity, after which the scraper can be rotated vertically from the scraping/collecting position to a higher return position and then reversed; (c) a drive section above the pond which turns a drive wheel continuously in a direction of rotation which can be switched over from normal to reverse; and (d) a pulling and winding system which is wound round the drive wheel and a direction-changing wheel in the pond so as to turn the scraper to its upper or lower position and pull the slide forward or back. Independent claims are also included for: (1) a sludge scraper (D2), e.g. for a sedimentation pond, with: (a) a slide as above; (b) a common shaft projecting from each side of the slide and carrying running wheels on each side so as to be rotated and rolled along the bottom of the pond; (c) a scraper round the common shaft (with the wheels arranged round the scraper) and designed to be lowered into the scraping position (moving forwards) and raised into the return position (moving backwards); (d) a device to stop the slide moving to the left or right when it is moves forwards or backwards; and (e) a drive section and a pulling/winding system as in D1; (2) a sludge scraper (D3) with a rotatable arm carrying a scraper which scrapes off the sludge from the bottom of a round sedimentation pond and gathers it so that it falls into a central cavity, in which the arm is turned by a driven wheel on the arm, which rolls round the bottom of the pond when actuated by a drive; (3) a sludge scraper (D4) for a round pond (see D3), which: (a) is aligned on the bottom so as to rotate above the water and move the floating foam in a radial direction towards the outside of the pond for elimination by a suitable system; and (b) is fitted with a gathering/guiding element to take the floating foam to the outside as above and then return to the inside; and (4) a sludge scraper (D5) in which: (a) there is a main air supply at the top of a wall of a rectangular processing pond and parallel to the sides; (b) there is a means of removing the scraped and collected deposits at a longitudinal end of the pond; (c) an air distributor tube projects from the main air line and crosses it so as to run along the side in contact with the main line; (d) the device scrapes off deposits from the bottom of the pond (e.g. an oxygen enrichment pond) and moves them towards the means provided (see (b)); (e) there is a guide rail on the bottom; (f) the guide rail has an upper section with a frame which runs backwards and forwards, a fixed feed scraper and another scraper of the vertically reversible type, the fixed scraper being aligned so as to scrape the deposits which have collected under the distributor tube towards the outside while the other is lowered so as to gather and move onward deposits from the bottom together with those scraped off by the feed scraper, and then raised to move it back again without any scraping action.

Description

background the invention

These The invention relates to a device for scraping and collecting Mud, especially sewage sludge.

at a conventional apparatus for scraping and collecting sewage sludge is a processing basin, such as a sedimentation basin, equipped with a circulating chain on which a number of projections is arranged. The projections scrape the mud from a bottom of the pool and collect it, while over the Run pelvic floor, and transporieren him to a depression. Since the conventional apparatus for scraping and collecting of sewage sludge has a complicated structure and costs in terms etc. does not pay off recently instead of the above Conventional device, a device for scraping and collecting of sewage sludge designed to have a sled with a vertical equipped movable scraper, which is aligned is, along along guide rails, the lying on the pelvic floor, moving forwards and backwards. These Device for scraping and collecting sewage sludge has the advantage that it has a simple structure and produced relatively inexpensively can be.

The mentioned above Apparatus for scraping and collecting sewage sludge is in general equipped with a carriage that owns wheels and is on the guide rails forward and move backwards can. He is powered from above the basin and gets through a drawing and conveying agent like a wire moves forward and backward. While he moving forward and backward, the sludge scraper on the sled can between a vertical scraping and collection position and a raised return position be switched.

at Such a device for scraping and collecting sewage sludge are the guide rails along both side walls arranged, and the carriage is formed wide in the horizontal direction, since he is over extends the space between these rails. Accordingly is this device so big that the cost reduction is canceled out again.

Of Another has the conventional device for scraping and Collecting sewage sludge a carriage formed short in a forward and backward direction is. That's why he moves forward in a long movement and back, since the processing basin has large dimensions. This leads to an increase in Duration of a scraping and collection cycle, and it is e.g. to fear, that the device is not satisfactory with a large amount can handle sewage that has flowed into the processing basin is. Therefore, the slide is extended so that its front End and back end equipped with mud scrapers, in an attempt at the rear section existing mud several times separated towards the front section to collect so that the mud falls into the depression.

If however, in this case, the main body of the Schlittens in plan view in principle the shape of a big one rectangular frame, there is a limitation on the Simplification of the structure of the overall device and also the cost reduction.

In In the case where a device for scraping and collecting sewage sludge of this type, where the scraper from the top position is switched to the lower position, and vice versa, as above mentioned is what for example a final sedimentation tank is conceivable as an application lifts the mud scraper easily lifts the mud up as it moves forward, since he usually at least 600 mm high. That's why it's likely that The decontamination is hindered by the section of the whirled up Mud of a big one flowability an overflow weir for excess water supplied that will be downstream is arranged, along the flow in the basin, through the easy lifting of the mud was caused.

Around the ones mentioned above To solve problems lies The present invention is based on the object, a device for scraping and collecting sludge, sewage sludge or the like, whose overall structure is simpler and which is a cost reduction allows and can be installed advantageously. Another task is it, a device for scraping and collecting mud or to provide the like that prevents the lifting of the mud, to improve the cleaning efficiency and the cleaning treatment to carry out effectively, by returning the mud, while he is activated.

Another object of the invention is to provide a device for scraping and collecting sludge or the like, which contains the Ro simplified in a circular sedimentation tank, ensuring reliable operation at low cost.

In order to achieve the above-mentioned objects, the invention according to claim 1 comprises a device for scraping and collecting sludge or the like, which comprises:
a guide rail located on a bottom of a rectangular processing tank in plan view having side walls facing each other, and a front wall and a rear wall disposed perpendicularly to these side walls, one end of the pool being provided with a recess; wherein the guide rail extends through a central portion between the two side walls in a longitudinal direction which denotes a forward and backward direction, and
a carriage with impellers provided on the guide rail so as to reciprocate in the forward and backward directions, the carriage having a scraper slicer for scavenging the sludge to be deposited on the left and right sides of the guide rail Scrape and collect the direction of the depression so that the scraper can be switched vertically and rotatably from a lowered scraping and collection position to a raised return position and vice versa,
wherein a drive section is arranged above the processing basin, which continuously rotates a driven wheel and switches its direction of rotation from a normal direction to a reverse direction, or vice versa,
wherein the mud scraper is rotated by means of a drawing and conveying means wound around the driven wheel and a direction change wheel located in the processing basin, and is switched to either the upper or lower position, and then the carriage is moved forward or backward is pulled.

advantageously, is the mud scraper at least at a front and a rear end of the sled, allowing the mud to pass through the scraper scraped off at the back end, collected and moved forward through the in front of the scraper at the rear end arranged scraper further collected and forward is moved so that the mud is pushed into the depression.

Of the Sled has a main body on, which is formed from a single long element, which in forward and reverse direction has a constant cross section, wherein the main body of the Schlittens having a front end and a rear end at where the mud scrapers are arranged, the front and rear mud scrapers at the same time and interlocking by the drawing and conveying over a interlocking longitudinally moving element, which is parallel to the main body of the carriage moved forward and backward.

Of the main body of the carriage is a channel-shaped element, an angular element, a square pipe or the like formed, and the longitudinally interlocking moving element is running through the space in the groove or in the pipe.

The guide rail has a longitudinal direction continuous interior, through which the drawing and conveying passes.

Of the Sludge scraper preferably has a vertical height in the area from 150 mm to 400 mm and is adjustable to a deposit state to meet the sludge in the processing basin.

advantageously, The front and rear mud scrapers define a gap longitudinal, in which an auxiliary scraper is arranged.

A support sticks up from the sledge, and a foam collecting plate, the collect the foam on the water in one direction is through upper end of the column provided so that it floats and sinks.

According to the invention, a device for scraping and collecting sludge according to claim 9 comprises:
a carriage provided on a bottom of a cross-sectionally rectangular processing pool, eg a sedimentation basin, having opposite side walls and a front wall and a rear wall arranged perpendicular to these side walls, one end of the basin being provided with a recess and wherein the carriage passes through a widthwise middle portion of the basin,
a common shaft projecting on the carriage in the left and right directions, and running wheels provided on left and right protrusions to be rotatable and rollable on the bottom of the pool,
wherein a mud scraper is disposed around the common shaft about which the wheels are also disposed, and the mud scraper is lowered into a scraping and collecting position for scraping and collecting the mud toward the recess as it moves forward and he is lifted up to a return position when he moves backwards,
the carriage being arranged to move fore and aft with a left and right direction deviation preventing means,
wherein a drive section is arranged above the processing basin, which continuously rotates a driven wheel and switches its direction of rotation from a normal direction to a reverse direction, and vice versa,
wherein the mud scraper is rotated by a pulling and conveying means wound around the driven wheel and a direction change wheel arranged in the processing tank, and is switched to either the upper position or the lower position, and then the carriage is moved forward or pulled back.

there has the means for preventing deviation in left and right direction preferably a guide rail on, on a widthwise middle section of the floor the pelvis lies, and a spacer roll coming out of the carriage protrudes and moves along the guide rail extends.

According to claim 11 is provided a device for scraping and collecting sludge, which is equipped with a rotating scraper, a scraper comprising the sludge on a soil surface of a round sedimentation basin scrapes and collects, then in a central recess falls the scraper arm being driven by a scissoring arm located in the scraper arm Wheel being rolled along the bottom of the pool, while it is driven by a drive source and a rotational movement performs.

The driven wheel is at an outer end the scraper arm is provided, and the drive source is also on arranged the scraper.

Of the Shaving arm is provided so that it surrounds a tube for insertion of Sewage turns off from a midsection of the basin the central depression rises up.

The Driving source is provided so as to be above the water surface of the Pelvic is rotatable, and is geared to their performance transferable to the driven wheel is.

According to claim 15, an apparatus according to the invention for scraping and collecting sludge comprises:
a rotatable scraping arm having a scraper scraping and collecting the sludge on a bottom of a round sedimentation basin and dropping it into a central well, which is designed to rotate above the water and the floating foam in the pool radially outward while collecting it so that the foam is removed in a foam removal device,
said device for scraping and collecting further comprises, as a means for collecting and conveying the foam in the radial direction of the basin outwardly, a collecting and forwarding element which can rotate so as to move the foam from a radially inner side of the basin collects and transmits to a radially outer side of the pool as it floats on the water of the pool, and then rotates to return to the radially inner side.

The Means for passing the foam in the radial direction of the basin outward has a rear side in the direction of rotation, on which a mud scraper is rotatably arranged in the basin.

According to claim 17, the device according to the invention for scraping and collecting sludge:
an air supply main pipe provided at an upper position with respect to a bottom wall of a rectangular cross-section processing tank having left and right side walls facing each other, and a front wall and a rear wall disposed perpendicular to the side walls, a longitudinal one End of the basin is provided with a means for disposing the scraped and collected deposits, the main pipe being installed so as to extend parallel to the side walls,
the apparatus further comprising an air distribution pipe projecting from the main pipe as it crosses it so as to extend toward the side wall and communicate with the main pipe, and
the apparatus scraping and collecting the deposits deposited on the bottom wall of the processing tank, such as an oxygenation tank, and passing the deposits towards the means for disposing of the deposits,
wherein a guide rail on the bottom wall lies between the side walls and extends in the longitudinal direction, which is a forward and backward direction,
wherein the guide rail has an upper portion provided with a frame so as to reciprocate in the forward and backward directions, and wherein there is provided a feed scraper which is stationary and another scraper of the vertically switchable type, wherein the first feed scraper is directed to the deposits, which have deposited in an area below the air distribution pipe, in Rich to scrape out an outer area and the other scraper is lowered to collect and pass on the deposits deposited on the bottom wall together with the deposits scraped off by the feeding scraper, while on the other hand it can be lifted up, to return in reverse without scavenging.

Short description the drawings

1 Fig. 10 is a plan view of a sewage sludge scraping and collecting apparatus showing an embodiment of this invention;

2 is a left side view of 1 ;

3 is a cross-sectional view taken along a line IV-IV in FIG 2 viewed in a direction indicated by the arrows;

4 Fig. 10 is a perspective view showing a front structure of the sludge scraping and collecting apparatus;

5 Fig. 12 is a vertical cross-sectional view showing a weight vibration mechanism connected to a front position;

6 Fig. 12 is a vertical cross-sectional view of the weight vibration mechanism, which is switched to a rearward position;

7 is a cross-sectional view taken along a line VIII-VIII in FIG 2 ;

8th is an exploded view showing how to connect the guide rails;

9 Fig. 12 is a vertical cross-sectional view showing an embodiment of a main body of the mountain-shaped sled;

10 Figure 11 is a plan view of a sedimentation basin equipped with another embodiment of a sewage sludge scraping and collecting apparatus;

11 is a cross-sectional view along line AA in 1 ;

12 Fig. 10 is an explanatory side view showing another embodiment;

13 Fig. 10 is a side view showing still another embodiment;

14 Fig. 10 is a schematic side view showing still another embodiment;

15 Fig. 15 is a vertical cross-sectional view showing an embodiment of a density flow preventing apparatus;

16 Fig. 11 is a side view of another embodiment of the apparatus for scraping and collecting sludge;

17 Fig. 10 is a cross-sectional view showing an embodiment of a sludge scraping and collecting apparatus for a round sedimentation basin;

18 is a vertical cross-sectional view of 17 ;

19 Fig. 10 is a front view illustrating a relationship between a scraping arm and a drive source and a drive wheel;

20 Fig. 10 is a front view showing another embodiment;

21 Fig. 3 is a vertical cross-sectional view showing another embodiment of the sludge scraping and collecting apparatus for the round sedimentation basin;

22 Fig. 11 is a plan view showing another embodiment of the apparatus for scraping and collecting sludge for the round sedimentation basin;

23 is a vertical cross-sectional view of 22 ;

24 Fig. 11 is a plan view showing another embodiment of the apparatus for scraping and collecting sludge for the round sedimentation basin;

25 is a cross-sectional view taken along line BB in FIG 24 ;

26 is an enlarged and more detailed view of 24 ;

27 is a cross-sectional view of 26 ;

28 is an enlarged cross-sectional view taken along line CC in FIG 26 ;

29 Fig. 10 is a cross-sectional view showing another embodiment;

30 is a cross-sectional view showing a further embodiment shows;

31 Fig. 10 is a schematic view showing another example of a power output device in the apparatus for scraping and collecting sludge for the round sedimentation basin;

32 Fig. 10 is a plan view showing another embodiment;

33 is a cross-sectional view along line DD in 32 ;

34 is a cross-sectional view along line EE in 32 ;

35 is a cross-sectional view along line GG in 32 ;

36 Fig. 10 is a plan view showing another embodiment of a mud scraping and collecting apparatus;

37 is a cross-sectional view taken along line XX of 36 ;

38 is a cross-sectional view taken along line YY 36 ;

39 Fig. 12 is a cross-sectional view showing another embodiment of a means for correcting deviation to the left and to the right;

40 Fig. 12 is a cross-sectional view showing another embodiment of the deviation correcting means to the left and right; and

41 Fig. 15 is a cross-sectional view showing another embodiment of the means for correcting the deviation to the left and right.

preferred embodiments the invention

in the Following, the present invention will be described in detail and by reference to the illustrated embodiments explained.

1 to 7 show a preferred embodiment of the present invention. The embodiment forms a Vorrich device for scraping and collecting sewage sludge, wherein a rectangular sedimentation basin is provided as an object. 2 shows the device by combining three vertical states, since the size of the paper is limited. These views form an overall view of the device by connecting a view of the middle state to a right side of a view of an upper state, and then connecting a view of a lower state to the right side of the view of the middle state.

The sedimentation basin has sidewalls 1 which are opposed to each other on the left and right, as viewed through a top view 1 and a right side cross-sectional view in FIG 2 is shown. While the direction in which the side walls face each other is defined as the width of the pool, a direction perpendicular to the width is considered as the longitudinal direction thereof. The walls, which face each other in the longitudinal direction, are used as a front wall 2 and back wall 2 trained as in 2 is shown. The front wall 2 at the left end is provided with a Strömungsausrichtungsabschnitt which introduces waste water and is permeable or the like formed. At one end in the longitudinal direction (left end) are concave depressions (sewage sludge wells) 3 formed, with the left and the right form a pair. A floor 4 of the pelvis, as he is in 2 is shown at a very small angle in 2 tilted down, although this is barely visible in this figure.

numeral 6 denotes a guide rail. The guide rail 6 passes through a width of the basin middle section, as in 1 shown, and extends over the wells 3 from the right end in 2 and thus forms a continuous, long rail. This guide rail 6 consists of a front rail (A) at the left end of 2 an end rail (B) at the right end and a plurality of intermediate rails (C) in the forward and backward direction between the rail (A) and the rail (B).

The guide rail 6 has a pair of main rail bodies 7 on, which are formed from H-shaped steel elements, as basically in cross section in 7 shown, and which are spaced apart from each other to the left or right, so that their grooves extend in the horizontal direction. These main body 7 are by welding over rail connection plates 8th connected to each other, which are spaced apart in the longitudinal direction. anchorages 9 attach the left and right ends of the rail connection plates 8th with the ground 4 of the pelvis so that the main rail body 7 stored there and fixed.

The main rail body 7 each have upper surfaces that form their outer sides, on which by means of welding Laufbasisplatten 10 are attached. More specifically, the front portion of the front rail (A) is with the front wall 2 by means of a rail bracket 11 connected, and the rear portion fixed in such a way that the rail connecting plate 8th on the front end of the floor 4 of the pelvis comes to rest. A third load roller 12 is at a front and bottom position attached to the front rail (A). Furthermore, a first load roller 13 at a higher position slightly backwards from the third load roller 12 on it by means of a holder 14 attached.

The front rail (A) has a back surface to which a plurality of intermediate rails (C) are continuously connected. With the back of the last of the intermediate rails (C), the end rail (B) is continuously connected, through which a second load roller 15 is attached. The role 15 is about a bracket 16 secured.

Each of the running base plates 10 the rails (B) and (C) extend slightly forward from the end portion of the main rail body, with its end portion being cut obliquely in the plane. In the front rail (A), shown in a lower left portion of FIG 8th , owns each of the running base plates 10 a rear end that is shorter than the main rail body. The long extension of the running base plate 10 the intermediate rail (C) behind the rear end rests on the main rail body of the front rail (A) and abuts against the rear end with an extremely small gap left therebetween. Also in the intermediate rail (C), which is composed of a plurality of continuously connected rails, has the running base plate 10 the rail (C) in a similar manner a shorter rear end formed. The running base plate 10 another rail (C) behind the rear end rests continuously on the main rail body arranged in front of it. The relationship between the intermediate rails (C) and the end rail (B) is the same. Thus, a continuous running base plate 10 in the pair on the left and right side of the guide rail 6 educated.

The continuously formed running base plate 10 has a front end and a rear end, each with a slope 17 are formed, so that an impeller, which will be explained later, from the running base plate 10 falls down to the main rail body when it comes to the end of the forward movement or the backward movement. How the inclination is formed at the front end and at the rear end is explained by taking out the relevant portion and below in FIG 8th is enlarged. This inclination is such that the sludge scraping apparatus must first operate by opposing resistance to slipping of the sled when the sled reverses from a scrapping and collection position and vice versa.

In the guide rail 6 is an inner rail 19 from an angled element, whose groove is directed upwards, fastened so that they are as in 7 represented by the connection plate 8th running. The inner rail 19 is continuously from a position behind the third load roller 12 in 2 to a position in front of the second load roller 15 stored. Furthermore, the inner rail has 19 a front end and a rear end, each with a rail piece 19a equipped, which is inclined downwards. This rail piece 19a allows a pulling and conveying means, which will be mentioned later, to be smoothly guided without hanging. As in 7 shown has the inner rail 19 in addition, a boundary element on both horizontal sides 19b on that the falling of the drawing and conveying means 26 prevents it from going down. This limiting element 19b is arranged in the longitudinal direction at a predetermined distance, but may also be integrated into a long integral structure.

In addition, the two main rail bodies define 7 a space with an upper end to which a rail cover 20 is releasably secured to prevent falling from above sewage sludge in the guide rail 6 entry. The rail cover 20 is with a groove 20a fitted. A slide explained later may be equipped with a scraper for removing sewage sludge from this groove 20a be equipped. This scraper may be a link chain or the like.

The sled 22 has a main body 23 , The main body 23 has a front portion (a) and a rear portion (b). Both sections (a) and (b) are hollow steels, as in 7 is shown. Their grooves are directed upwards and their front and rear ends are detachable by means of flanges 24 connected, as in 2 shown to form a slender and single integral body.

The main body 23 the carriage has a front portion integral with a receiving plate 26 is attached as viewed through a perspective view in 4 is shown. This receiving plate 26 has a left and a right bearing block 27 each formed in the form of a horizontal plate and an end plate 28 formed integrally with the front ends of the bearing blocks so as to hang down therefrom at a right angle. They are through rear reinforcing plates 29 and upper reinforcing plates 30 strengthened. The end plate 28 It has a front surface with a pair of left and right carriage-side cleat 32 is equipped for safety when bumping against a safety stop 31 (which is adjustable to move forwards and backwards), which, as in 2 shown on the guide rail 6 is arranged to ensure if there is an emergency in performing the scraping and collecting.

The left and right of the pair of mounting plates 26 Each has a bottom, on which a rollerbock 37 is integrally attached. The rollerbock 37 supports a lateral roller 34 against the base plate 10 from an outer and lateral area, and a caster 35 (with a roller block 36 ) for preventing lift-up from a lower portion, with respect to the local relationship in the forward and backward directions, against an upper land of the main rail body 7 can bump. It is also between the end plate 28 and a cover receiving member 38 a side cover 39 releasably secured, which protects the bearing or the like, which will be mentioned later, from the sewage sludge. Additionally owns the end plate 28 a lower and rear surface on which a rail scraper 40 is releasably attached. The rail scraper 40 removes the sewage sludge over the upper surface of the guide rail 6 or within the grooves, as in 3 shown.

These Constructions are substantially identical to those at the rear end portion of the Schlittens, so that these only with the same reference numerals be designated and an explanation therefor is omitted.

Shaft attachment plates 42 with waves 41 which project integrally therefrom are rearward of the receiving plate 26 of the main body 23 attached to the carriage so that they can be fastened by means of screws from the sides. impellers 43 are rotatable about the left and right shaft pair 41 arranged around. The wheels 43 roll over the running base plates 10 ,

A pair of left and right auxiliary intermediate wheels 45 is near the front and rear connecting portions of the main body 23 of the carriage formed as non-limiting synthetic resin wheels.

On the other hand, a pair of left and right bearings 52 detachable on the corresponding bearing blocks 27 the front and rear mounting plate 26 attached so that their axes are aligned widthwise. A solid (or tubular) rotatable shaft 53 is provided in such a way that it passes through these bearings 52 passes through and protrudes from both sides. This rotary shaft 53 has opposite ends, with a pair of left and right mud scrapers 55 are equipped. Each of the mud scrapers 55 has a scrap tube 54 , a main body 58 and a rubber strip 59 on. The scraping pipes 54 are in the opposite ends of the rotatable shafts 53 inserted and released by fasteners 56 attached. The main body 58 is over a connection band 57 that from the scrap tube 54 protrudes, on the scrap tube 54 attached. The rubber strip 59 is configured to extend over a lower edge portion and an outer edge portion of the main body 58 extends. Furthermore, each of the main body possesses 58 a rear and lower section, with a roller 61 connected via a stored guide rail 60 can be rolled and is adjustable in height.

In a position between the camps 52 the front rotatable shaft 53 is like in 5 and 6 illustrated a pair of left and right short pickup arm 63 provided, in each case via the rotatable shaft 53 projects and turns with this one. A front interlocking arm 65 extending vertically upwards through a curved axis of rotation 64 extends, swinging forwards and backwards between the arms 63 pivoted. This arm 65 has an upper section that has an adjustable weight 66 is provided. The arm 65 has a lower end portion, which is in the form of a kind of circular notch 68 with an inner diameter that is larger than the diameter of the rotatable shaft 53 , is designed so that the weight 66 forward and backward with respect to a vertical line 67 can swing. The score 68 has a front lower end portion 69 and a rear lower end portion 69 that alternatively against the rotatable shaft 53 bump.

So if the weight 66 forward with respect to the vertical line 67 resonates, as in 5 is shown, a compulsive force is enabled, which supports the rotation and the forward movement, thereby the scraper 55 to stabilize in the cockroach and collection position. On the other hand, if the weight 66 with respect to the vertical line 67 swinging backwards as in 6 As shown, it creates a constraining force that promotes rotation and backward movement around the scraper 55 to stabilize in the off position (return position). A backward interlocking arm 71 is essentially V-shaped. He has no such vibration mechanism as the front meshing arm moves 65 , that's why with the rotatable shaft 53 firmly connected and thus stands vertically upwards.

An interlocking moving connector 72 is designed to be adjustable in length, and its one end is in each case with the front intermeshing moving arm 65 or the rear intermeshing arm 71 connected. The interlocking moving connector 72 has at the other end a lower portion which moves in a forward and backward direction piece 73 connected in a forward and outward direction moved. This moving forward and backward piece 73 also has a shock element 74 and is arranged in a front and a rear position. Both pieces are integral to a sliding forward and rearward sliding member 75 fixed in the form of a square, extending over a bottom of a widthwise central portion within the main body 23 of the sled as in 4 shown moved forward and backward. The sliding forward and backward sliding element 75 is arranged in pairs in the forward position and once in the rearward position. Both are in a quadrangular bore of a Gleitelementaufnehmers 77 made of resin, in the main body 23 the carriage is provided so that it can move forward and backward. The Gleitelementaufnehmer 77 is detachable via an upper pressure plate 78 attached. A connector 79 , which is formed as a round bar, is between the front and the rear sliding member 75 as in 1 shown arranged.

numeral 80 denotes a front stop and reference numeral 81 denotes a rear stop. These are at a front and a rear position of the main body 23 of the carriage through brackets 82 arranged so that they are adjustable fore and aft. The shock elements 74 push against the stop 80 respectively. 81 and thus control the scraper in the cockroach and collection position or in the raised return position.

As in 2 shown is a driven gear 85 a load roller for a link chain provided above a width to the middle portion of the basin. The driven gear 85 is controlled by a drive source, a reduction gear motor, for normal rotation or reverse rotation. The direction of rotation is determined by a limit switch, not shown. A pulling and conveying device 86 is a chain around the driven gear 85 is laid, and is with a in 4 illustrated connection anchor 87 over the first load roller 13 connected. The other end of the drawing and conveying 86 is connected to a rear connection anchor and passes over the second load roller 15 as in 2 shown in the guide rail 6 one. She moves forward while passing through the inner rail 19 is guided, and lies around the first driven gear 85 over the intermediate station of the third load roller 12 ,

The main body 23 of the carriage has front opposite sides, on which support base 88 as in 4 are shown attached. A support post 89 stands like in 3 shown on the support pedestals 88 , The support post 89 forms a foam collector. The foam collector conveys and collects foam on the water surface 90 floats, to a foam removal device which will be mentioned later. The support post 89 has four column elements, two higher front elements 91 and two lower rear elements 92 , These column elements are with their lower ends on a mounting plate 93 detachable on the support base as in 4 is shown attached. A longitudinal connection element 95 connects an upper end of the rear pillar member 92 with the front pillar element 91 , A lower connecting element 96 extends between the left and right connectors 95 ,

In addition, a pair of left and right vertical guide bars are provided on an upper end of the support post 98 each of which is a coil spring 97 has. A foam collecting plate 99 is geared towards the pole 98 to move vertically. The foam collection plate 99 has a hollow member which is rectangular in cross-section, and has an inner portion filled with a foam material to ensure buoyancy. The foam collection plate 99 has a widthwise middle section with a pull-down bar at the bottom 100 protrudes downwards. This rod 100 is in the vertical direction through a rod guide tube 102 guided by an upper horizontal connecting element 101 hangs. The pole 100 has a lower end with which one end of a connecting wire 103 connected is. The wire 103 is at an upper end of the front meshing arm 64 about a role 105 connected in a holder 104 it is provided which of a front surface of the lower horizontal connecting element 96 protrudes.

When next becomes the operation of the apparatus for scraping and collecting sewage sludge explained.

1 . 2 and 3 show a state just before the scraping and collecting is finished. In this state, as in 2 shown, the drawing and conveying 86 pulled as shown by the arrow with the solid line (F), whereby the sliding forward and backward sliding element 75 that with the agent 86 as in 4 is shown also pulled. Then it pulls the moving forward and backward piece 73 on the slider 75 forward in 4 and pushes the front interlocking moving arm 65 forward through the interlocking moving connector 72 , The front interlocking arm 65 should thereby lean forward, as in 5 to be pushed forward, and holds the mud scraper 55 with means of the pickup arm 63 through the curving axis of rotation 64 upright to take the scraping and collection position. On the other hand, in the rear area, when the sliding forward and rearward sliding element 75 as in 4 drawn forward, which moves forward and backward moving piece 73 through the connector 79 (please refer 1 ), which is connected to it, pulled forward and then stops when the shock element 74 against the back stop 81 encounters. When the piece moving forward and backward 73 is pulled forward, is the rear interlocking moving arm 71 upright, as in the middle state of 2 is shown, by the interlocking moving connector 72 , and at the same time becomes the rear scraper 55 also controlled in a vertical scraping and collection position. The back scraper 55 went while taking the scraping and collection position as in 2 represented by a stroke (S) forward.

Thanks to the fact that the front interlocking moving arm 65 at the time of scraping and collecting tends to be forward, the wire becomes 103 as in 2 shown pulled forward. Simultaneously with this forward pulling becomes the pull-down bar 100 as in 3 represented by the groove 105 pulled down while the coil spring is compressed. The foam collection plate 99 at the upper section is under the water surface 90 pulled and returns in a direction corresponding to the direction (F) without collecting foam.

Subsequently, the limit switch acts on the drive source to the drawing and conveying means 86 to reverse the rotation (turn clockwise in 2 ). The cleats 32 of the sledge are aimed against the front safety stop 31 to come across. But this only happens in an emergency. Normally, the above-mentioned switch keeps the forward movement of the carriage 22 at. Due to the reverse rotation, as in 2 shown, the drawing and conveying 86 pulled in a direction indicated by an arrow with the dashed line (R) and is about the third load roller 12 under guidance along the inner rail 19 inside the guide rail 6 pulled forward. The drawing and conveying chain 86 , which has the rear second load roller 15 is put into circulation, is pulled backwards. Thus, the rearward sliding forward and backward sliding element acts 75 in the same direction and at the same time, the front becomes forward and backward moving piece 73 pulled back, also by the connector 79 , As a result, the front and the rear intermeshing moving connector moves 72 together backward, whereby the respectively associated front and rear interlocking moving arm 65 and 71 is tilted backwards. Thus, the front intermeshing arm moves 65 interlocking the rotatable shaft 53 through the pickup arm 63 , as in 2 is shown after the weight 66 swinging backwards to the mud scraper 55 lift him up and bring him into the return position. The rear interlocking arm 71 tilts through the interlocking moving connector 72 also to the rear. In harmony with this moves the rear mud scraper 55 forward to the top to return. Through these actions, the front pushes forward and backward moving piece 73 against the front stop 80 , as in the middle state of 2 shown to stop the entire interlocking moving mechanism and lock in the return position. However, it is not said that the sled 22 the backward movement does not begin earlier, by a reverse force acting before this stopping and latching action. Accordingly, the front end of the running base plate 10 arranged such that the front wheels 43 fall off a little before the scraping and collecting function is completed. On the contrary, the front end of the running base plate 10 geared to provide a resistance which the front wheels must overcome when the backward movement is taking place. Therefore, not the backward acting force, which passes through the pulling and conveying means, does not first take hold 86 is delivered to the sled 22 but withdraws, ensures that the interlocking moving arms 65 and 71 be pressed first. This is an attempt to ensure such movement, at first the mud scraper 55 is switched and then the carriage 22 sets in motion. The same applies to the case when the return position is switched to the scraping and collecting position.

In addition, based on the foam collection plate 99 , the front interlocking moving arm leans 65 back to the wire 103 To loosen, which makes this possible, due to the recoil force of the spring 97 Float on the water surface and take the foam collection position. After the front wheels 43 on the running base plate 10 Consequently, the above-mentioned actions drive the drawing and conveying means 86 to the front and back mud scraper 55 towards (R) in 2 to move back while being lifted up. At the same time collects the foam collecting plate 99 the foam on the water surface towards Schaumbefeitigungsvorrich tung. When the sludge scraping and collecting apparatus returns to the rear end, the limit switch is operated, and thus the drive source is switched to the rearward rotation (rotation to the left in FIG 2 ). This will switch the front and back scrapers 55 in the vertical scraping and collecting position (see the lower state in 2 ). In this state, the front scraper gets 55 in a waiting position a little behind the back mud scraper 55 , shown in the middle state. If the back mud scraper 55 in the lower state in 2 In the meantime, moving around a stroke (S), it comes to the position shown in the middle state with solid lines. More specifically, the mud in the rearward area by a two-stage Abschabe- and collecting process in the depression 3 brought. On the contrary, the device for scraping and collecting sewage sludge moves forward and backward by about half a stroke. Thanks to this fact, represented by a fictitious line in 1 , a third scraper can between the front and the rear scraper 55 be arranged. Furthermore, at least four scrapers can be used. These scrapers are all in a cooperative relationship with respect to their movement. After the sewage sludge scraping and collecting device has moved back and then switched to the scraping and collection position, the foam collecting plate becomes 99 continued to be pulled down and lowered below the water surface, so as not to foam back in the left direction 2 and she returns in the direction of (F).

The used embodiment described above a link chain as a drawing and conveying means. Instead, you can Also a timing belt, a wire or similar ropes are used.

The main body of the carriage may have the grooves down and may use semicircular tubes. In particular, in order to prevent the depositing sludge from remaining, in a simplified structure of the main body of the sled, it may be used as a main body 110 in the form of a mountain or an angle like in 9 be formed represented. The main body 110 has a bottom-side section 110a and can be integrally formed. The main body of the carriage can be considered a main body 111 may be formed, which consists of a rectangular tube with at least one angular edge upwards, as by an imaginary line in 9 is shown. As can be seen at the same time in the same figure, a guide rail 112 be formed of a pair of left and right main body, each of which has two angular elements, which are integrally formed by welding in a blasted structure.

In the previous embodiment was an explanation for the Apparatus for scraping and collecting sewage sludge with the foam collecting device given. There is a case where the device is for scraping and collecting sewage sludge merely constructed as such without the foam-collecting device is.

The main body 23 the carriage is at its upper section as in 4 shown open, leaving a front upper cover 107 and a rear lower cover, not shown, may be releasably secured.

Regarding the mud scraper 55 For example, two may be arranged at a front and a rear position. However, three or more, for example four, five, six, etc., may also be provided.

10 and 11 show another embodiment in which six mud scrapers are used. Reference numeral (L) denotes a distance between the mud scrapers, and reference numeral (S) denotes a forward and backward stroke. Here, (S) is set longer than (L). A foam removal device 120 is in a position on the water surface and right separated from the foam collecting plate 99 in the view of the upper state in 11 intended. The foam removal device 120 is equipped with a weir that periodically floats and sinks, in front of an angular trough that extends between the sidewalls 1 extends. The weir sinks under the water surface 90 , and swallows the collected foam. The foam removal device may consist of a pipe-trowel system or the like.

In 2 is the mud scraper 55 relatively high, so that its height is between about 500mm to 600mm. However, this height can be reduced to 150mm to 400mm. In particular, in the device for collecting 11 , with the last sedimentation basin as intended purge object, owns the scraper 55 a height in the range of 150mm to 300mm. This effectively prevents the lifting of the sludge which flows with the forward and backward movement. The scraper 55 preferably has a height of about 200mm and moves forwards and backwards at a speed of about 0.27 m / min. which is about 10% lower than the standard speed (about 0.3 m / min.) of the conventional projection. Then the fluid sludge is not collected.

In the case where the forward speed If the sludge scraper is set lower, it is considered that the collected amount can be reduced. Thus, the present invention can provide at least one auxiliary scraper 121 which is vertically movable unlike the original mud scrapers 55 , arranged at a predetermined distance in the forward and backward directions, on a front side where more sludge is deposited from the flow reinforcement plate, namely viewed from the front between the first and the second sludge scrapers 55 , The presence of the auxiliary scraper 121 ensures the collected amount, and also the stroke (S) is set to correspond to a period for maintaining the active state. The active fungi in the returned mud are sent for oxygenation as they live and can be used effectively for cleaning.

12 shows a plate 123 who the mud scraper 55 was added at the front end to adjust its height. There is a case in which the scraper should scrape and collect more sludge depending on the sedimentation basin. The plate 123 is there to allow an application in this case as well. The plate 123 has an upper end with a long forward projection 124 The width is equipped, which prevents the lifting.

13 shows a further embodiment, in front of the scraping tube 54 continue a plate 126 comprising an angle member or the like to prevent the lifting. The plate 126 is with a strut 127 connected by the scraper 54 protrudes obliquely forward. It can be around an axis 128 be moved, whereby their angle and the height can be adjusted. Besides, the plate can 126 be designed as a semicircular tube. The main body 23 the carriage may be in the form of a roof, as shown by the right-hand view, using an angle member which serves not only as a frame but also as a cover over which the mud flows to the left and right below. numeral 129 denotes a holder for a bearing.

14 shows yet another embodiment that prevents the lifting of the mud. The mud scraper 55 is arranged so that it from the scraper 54 deviates to the rear, whereby a forward range is formed. The presence of this forward region causes the raised portion of the mud to rotate backwards, as indicated by an arrow, causing it to be depressed and disappearing. Furthermore, the scraping tube 54 have a front outer surface that with a guide plate 130 equipped for reverse rotation, which protrudes from it.

15 shows yet another embodiment. In 15 the sedimentation basin is used as the last sedimentation basin. The sedimentation basin has left and right side walls 1 as well as a front wall and a back wall 2 one of which is shown. She points the depression 3 at the upstream end of the bottom wall 4 on. The upstream wall 2 is with an inflow control wall 131 equipped with a number of flow holes. A mixed liquid from an inflow channel is introduced through the flow holes into the basin. The reference number 132 denotes an inflow alignment plate having a number of holes and the control wall 131 to further orient the flow of mixed fluid. There is a case where there is no inflow registration plate 132 is provided.

In such a final sedimentation basin, when it rains a lot and the amount of the inflow barrel reaches a peak, unlike a stream flowing in an upper layer as indicated by arrow (T), the mixed liquid whose temperature has dropped and flows has received a relatively high density due to the rain, not directly down, but only in a sluggish stream as a density flow. While she tends to moderate as indicated by arrow (M) in 15 As shown, it is caused to move downstream and then inverted several times upstream of the downstream wall. When such a density flow occurs, it causes the unfavorable problem that not only does the efficiency of deposition decrease during the presence of the density flow, but that this flow also flows along with the floating sludge flocculation to the outflow area of the pool accompanied by it and vice versa which creates an upward flow through which this flocculation can flow through the weir.

by virtue of suppressed this fact this embodiment effectively the density flow (M) by a simple system with which the outflow phenomenon of the Sludge flocculation can be prevented and rapid recovery of the active sludge can be realized by the deposit of the mud accelerates at the beginning of the influence or the like becomes. Furthermore suppressed it's the occurrence of sludge flocculation itself, in an attempt to prevent the mentioned problems.

More specifically, in this embodiment, a Flow preventing means 133 just behind a front end of the guide rail 6 in the basin as in 15 arranged, and precisely behind a position at which the link chain 86 runs vertically, and across the entire width of the basin. The river prevention agent 133 has several support bars 135 which are provided widthwise in a horizontal direction in a position just below the water surface 90 is lying, and where she is under an upper wall 134 are hidden and spaced at a predetermined distance in the forward and backward directions. It also has prevention elements 136 which are composed of connected members such as various kinds of ropes (including a cord and a wire rope), a thin rod, a chain (including a link chain), strip members such as a rubber strip and the like at a predetermined distance from the support rods 135 are spaced so they are from the support poles 135 hang down. These various types of ropes and thin rods are similarly applicable to other embodiments. These prevention elements 136 are arranged in a staggered manner when viewed from above. The river prevention agent 133 may be located upstream of the area where the link chain 86 runs in the longitudinal direction (see the position represented by the line, which is partially drawn through and partially marked with two individual points).

Furthermore can be a cylinder with a long stroke and a hydraulically driven System parallel to a long main body of the carriage and it be arranged. Its bar is with a leading end of the guide rail connected and can be moved forward and backward by alternatively Water under pressure in a front section and a rear section a piston is inserted in the cylinder. The main body of the Schlitten itself can be the cylinder.

16 shows yet another embodiment relating to a compact apparatus for scraping and collecting sewage sludge, wherein the main body 23 the carriage in the forward and backward direction is formed short and at its lower portion with a mud scraper 55 Is provided. The main body 23 The carriage is formed of a thin, single body in the above-mentioned cross-sectional shape of a mountain and has wheels 43 , lateral rollers 34 , Castors 35 for preventing lifting, which are respectively arranged like the long main body. As for the other parts, the reference numbers indicate 86 . 75 . 72 . 71 and 66 a pulling and conveying means, a sliding forward and backward sliding member, an intermeshing moving connecting piece, a rear intermeshing moving arm or a weight. The mud scraper 55 may be arranged on the front in some cases.

17 and 18 show a further embodiment of a device for scraping and collecting sewage sludge for a round sedimentation basin. The round sedimentation basin has a conical bottom wall 141 on, in the middle of a depression 140 is arranged, as well as a circumferential wall 142 , It still has an overflow weir 143 with V-shaped notches on that along the perimeter wall 142 is arranged, and a baffle 144 on an inner circumferential side of the weir 143 , A sewage supply pipe 145 extends horizontally over the sedimentation basin. The sewage supply pipe 145 has a middle section with a vertical tube 146 connected through which the wastewater falls down. The vertical pipe 146 is from a central shaft 148 surrounded by a strut 147 is attached. numeral 149 denotes a waste water distribution plate.

The depression 140 has an upper opening in which a support element 151 is fixed, which has a cross-sectional cross-section in plan view. The support element 151 has a central portion provided with a vertical, fixed pipe 152 Is provided. In the pipe 152 is rotatable a vertical shaft 153 intended. This vertical wave 153 has a lower end on which a rotatable paddle wheel 155 is attached to the mud that enters the depression 140 flows, to a mud discharge line 154 to guide with a circumferential section of the recess 140 connected is. On the other hand, is a pair of scraping arms 156 rotatable about the vertical shaft 153 arranged around. Each of the scraper arms 156 is with a number of scrapers 157 equipped and has an outer end that with a drive source 158 equipped, which consists of a submersible motor and a reduction gearbox. One of the scraping arms 156 has a driven wheel at its outer end 159 consisting of a rubber tire, which by the drive source 158 is forcibly driven and turns while it is on the bottom wall 141 rolls along. The other scraping arm 156 can also use a powered wheel 159 be provided. In this case, the driven wheel is alternatively a freely rotatable wheel or an actively rotated wheel.

A distribution line 160 the drive source 159 is through a central tube 161 to an upper rotatable conductive connection 162 guided, so that the drive source can be supplied with energy.

The scrapper 156 consists of a single NEN pipe, as in 19 is shown. However, there is a case where it is composed of at least two pipes as in 20 is shown. In the event that the sedimentation basin is so large that it has an opening with a diameter of 50m, the Schabarm 156 rotatable around the sewage supply pipe 164 be arranged upright from the central portion of the basin through the central recess 140 runs. Furthermore, as in 22 and 23 shown a scarf 167 around a vertical shaft 166 arranged and has at its outer end a driven wheel 159 , On the other hand, the vertical shaft 166 an upper end that has an insertion cylinder 168 and a central shaft 169 so that they rotate together. A foam collection arm 170 that is from the insertion cylinder 168 extends out, has an outer end, on which a drive source 171 is provided. The drive source 171 can about a chain 172 with the driven wheel 159 be connected. The reference number 173 denotes four connecting support posts that support the arm 170 with the scraping arm 167 connect. numeral 174 denotes a foam removing device.

24 and 25 show another embodiment of the round sedimentation basin. 26 to 28 are enlarged views of another embodiment. This basin has a depression 200 in its middle section, as in 25 shown in cross-section, and has a bottom wall 201 on, which is slightly inclined, and a circumferential wall 203 coming from the bottom wall 201 goes up. The basin is furthermore with an overflow weir 203 with V-shaped notches and a baffle 204 equipped by an inner circumferential side of the overflow weir 203 spaced apart.

The depression 200 has a middle section with a basic base 205 equipped, on which a central tube 206 stands. A sewage supply pipe 207 gets by the bottom line 205 and the central tube 206 introduced. As indicated by arrow (H) in 24 the wastewater is shown through the supply line 207 flows from the outside, leak from an opening at an upper end of the central tube 206 is trained. numeral 208 denotes a central support post.

The central tube 206 is around its base with a rotor 210 equipped, which is vertically rotatable via radial bearings. The rotor 210 is in a basic way 205 rotatably supported by abutments. The rotor 210 has scraper arms 211 that is far radially from a rotating section of the rotor 210 protrude. The scrapper 211 is a light arm that has four tubes and connecting lines for connecting these four tubes together. The scrapper 211 has a lower surface on which such scrapers as in 17 are shown in plan view, and a lower portion on an inner circumferential side, with a paddle wheel 212 equipped, that the mud in the depression 200 pushes.

The scrapper 211 has a lower surface at its outer end to which a frame 214 attached, the revolving at its front and rear ends with driven wheels 213 is provided as in 26 is shown. The scrapper 211 is at an upper portion of the inner circumferential side with a vertical inner support post 215 fitted. The support post 215 is in the radial direction a little further out with another intermediate support post 217 for supporting a central shaft 216. equipped, which protrudes from there upwards. The scrapper 211 has on its radially outer side an outer vertical support post 218 , A rotating pedestal 219 is on the support post 218 attached.

This pedestal 219 performs a rotational movement along an inside of the baffle 204 , When the socket 219 in the area of an inspection pedestal 220 which comes from a special position of a circumferential wall 202 protruding to an inner border of the pelvis, it is possible to stand on its upper side, whereby the possibility of maintenance work and the like exists. On the pedestal 219 is a drive source 221 for scraping and collecting mud containing the driven wheels 213 drives, and a drive source 222 installed to collect foam. As in 25 shown, becomes a cable 226 on a rotation side of a power supply cable 224 Guided along with a guide rope, extending between the central support post 208 and a support post 223 extends at an outer periphery, through a rotatable Stromleitanschluss (slip ring), as shown by arrow (Z), to the drive sources 221 and 222 by a rotating element, for example the scraping arm 211 and a foam collector, which will be explained later.

numeral 230 denotes the foam collector having a cross section as in 28 shown and a long plate-shaped element, as in 26 is shown. Only one upper end section of the foam collector 230 performs the rotational movement in a direction indicated by arrow (Q) in 24 is displayed while coming out of the water surface 231 protrudes. The foam collector 230 is at one end of an inner circumferential side with the inner support bracket 215 connected, and on the other hand at its other end an outer circumferential side with the outer support bracket 218 so he spans himself in between. Thus he collects the foam on the water surface 231 in the forward direction due to Rotation.

The reference numbers 232 and 233 designate an inner or outer sprocket. These are arranged in pairs and are about a horizontal axis through the upper sections of the corresponding support posts 215 and 218 rotatable. A couple of interlocking elements rotating forwards and backwards 234 are around these sprockets 232 and 233 are placed and driven by the drive source 222 continuously driven to collect the foam and pass through a guide in a direction indicated by arrow (Y) in 27 is displayed to move forward.

Between the front and rear portions of these rotating intermeshing elements 234 are collection and forwarding elements 235 arranged for floating elements, respectively, as in 28 represented having the shape of a round shaft (or a rectangular shaft). For the collecting and forwarding elements foam resin, wood, rubber pipes and the like are used. The foam collector 230 , which is an interlocking rotating element 234 and the collection and forwarding element 235 are formed such that they pass through an opening channel 336 of the central shaft 216. go through and also within the central shaft 216. Collect the foam and forward in the direction indicated by the arrow (Y). Furthermore, the drive source 221 and the driven wheels 213 through a subsidy 237 connected, such as sprocket and chain, as in 25 is shown. However, in the above-mentioned embodiment, there is the case where an underwater drive source directly adjoins the scraper arms 211 is arranged to the driven wheel 213 drive. In addition, the foam collector 230 be omitted from this embodiment. Although collecting and forwarding elements 235 In addition, if they are arranged so that they return to the water, they can additionally also return above the water surface (this is similarly transferable to the embodiments mentioned below).

As in 24 is shown, furthermore, a special position of the baffle plate 204 formed in the form of a notch. At this notch is a foam recovery box 238 attached, the gate on its front surface 239 has, which is opened and closed by a lever movement. The rotating outer support post 218 urges the lever to the gate 239 open so that the collected and forwarded foam can be introduced. The gate 239 is closed after rotation due to buoyancy or by a spring.

The foam collector 230 rotates in the in 24 indicated by arrow (Q) to collect foam in the basin. At the same time, the collection and forwarding element 235 driven in the direction indicated by arrow (Y), that of the foam collector 230 collected foam is forwarded radially outward to the edge of the pool and accumulated there. If he's at the gate 239 arrived, opens the gate 239 to the foam in the foam recovery box 238 from which the foam as indicated by arrow (K) in 24 shown removed. Arrow (J) in 24 indicates the direction in which the pure excess water from the overflow weir is led to the outside.

In another embodiment, in 29 is shown, the collecting and forwarding element 235 be omitted. Instead, a collection and forwarding element 242 only be composed of a resin rope or the like, which float on the water. Besides, as in 30 shown a number of collection and forwarding elements 245 of foam resin or the like on a link chain, wire or similar interlocking rotating member 244 be attached to perform the collection process. It should be noted that there is a case in which the foam collector 230 is omitted. Also, as on the right edge of 29 represented, the collecting and forwarding element 242 be designed to rotate about a sprocket (or a roller) rotatable about a vertical axis while floating on the water surface. The foam collector 230 may be included or omitted.

31 shows a further embodiment of the power supply system in the event that the driven wheel 159 through in the in 21 illustrated embodiment includes an underwater drive source 158 is driven. More specifically, the reference numeral designates 247 an expanding wire. The wire 247 has a middle section with a connection 249 is firmly connected, in which a slip ring is housed. The slip ring 248 has an outer border, which is firmly connected to a brush to which a power supply cable 250 Voltage can be applied. From the Schabarm 156 is a curved support post 251 upwards, which is in the form of a crank and at its upper end with the rotatable brush of the slip ring 248 Is provided. Furthermore, the support post 251 rotatable. A power supply cable 252 on the turn side, through the support post 251 and the scraping arm 156 is guided, the drive source 158 drive and control.

32 - 35 show by way of example a further embodiment which has an oxygen enrichment tank (reaction tank) 300 concerns. Although the pelvis 300 has already been introduced, this embodiment can be applied to a new basin.

The basin 300 has a left and a right side wall 301 represented in 32 and 33 , and upper and lower walls corresponding to upper and lower portions in FIG 32 on. It also has a bottom wall 302 on that in 33 to 35 is shown. As a whole, the basin is formed in the shape of a rectangle.

A plurality of tubular concrete bases 303 are on the bottom wall 302 arranged. These pedestals 303 are at predetermined intervals on two lines parallel to the side wall 301 spaced apart. On these pedestals 303 are main lines 304 attached according to the above-mentioned lines and parallel to each other. Compressed air is from one end or from both ends of each of these mains 304 fed.

A pair of air distribution pipes 305 extends at several longitudinally viewed portions of each of the main lines 304 off, perpendicular to the longitudinal direction and horizontally, standing with the main lines 304 in connection. Each of these air distribution pipes 305 has a bottom longitudinal surface with an air distribution opening 305a is equipped, as in 33 is shown. As in 32 and 33 As shown, each air distribution tube is from the sidewall 301 spaced at a predetermined distance. The air distribution pipes opposing each other in the left and right directions are also spaced apart from each other at a predetermined distance.

Various types of deposits, most of them fine sand mud, settle on the bottom wall 302 in the oxygenation tank 300 from. In a conventional manner, it has been impossible to provide a disposal device (scraper) that can effectively remove the deposits. This is because the bottom area of the basin 300 from the pedestals 303 , the mains 304 and the air distribution pipes 305 composed, which constitute a major obstacle in forming the removal device.

This embodiment makes possible a device for scraping and collecting deposits (deposited sand) 310 specially designed and adapted to the existing air distribution structure. The following is the left / right extension in 32 and 33 to be considered as the width direction of the pelvis. The device 310 for scraping and collecting deposits moves in the vertical direction in 32 back and forth to scrape and collect the debris. That is why in 32 an upward arrow with a solid line indicates a scraping and collecting direction (F), and a downward arrow with a solid line indicates a return direction (R). Further shows 33 the device 310 from her back.

The device 310 has a guide rail 311 on, which has a monorail system as relevant part. This embodiment used as a guide rail 311 a rectangular tube into which no deposits can penetrate. The guide rail 311 is along a widthwise middle portion of the device 310 arranged and fastened by means not shown anchors. There is a case where a steel double-T beam is used as a guide rail 311 is used.

In this case, however, there is a likelihood of another local scraper on the device 310 to fix. In addition, an end portion in the scraping and accumulating direction (F), which is the upper portion in FIG 32 corresponds to hollowed out to form a depression so that the collected deposits can fall down and can be removed, or it is arranged so that the deposits can be removed by vacuum directly without using the recess.

The device 310 is with a frame 312 fitted. The frame 312 is arranged so that it forms a saddle, wherein the groove is directed downward. The frame 312 has at its front and rear ends a pair of left and right wheels 313 on, each on the upper surface of the guide rail 311 rests and rolls on it. Each of the wheels 313 is flanged on its outside to make it the guide rail 311 does not leave. Although not shown, there is also a case where the frame 312 is provided with a lateral spacer roller which rotates about a vertical axis and the frame 312 keeps on the right track by holding the guide rail 311 touched from an outer area. In addition, a distance roller can be provided which prevents floating because it is the upward movement of the frame 312 Constant controls, and it may be arranged so that it has a horizontal flange (eg, an upper flange of the double-T-beam) on the side of the guide rail 311 touched from below. The wheels 313 may be formed in the form of large rollers and may be a pair of these rollers to ei nem front and a rear end of the frame 312 exhibit. The frame 312 has a front and a rear end, each with rail scrapers 314 on the guide rail 311 equipped with the deposits that are on the guide rail 311 have pushed away, push outward.

A revolving element 315 , which consists of a wire rope, a connecting chain or the like, is both with the front and with the rear end of the frame 312 connected. This revolving element 315 consists of a single wire or a single chain. For example, one end thereof is at a front end of the frame 312 and the other end is connected to the rear end thereof while being connected via a suitable sprocket to a power source installed in the pool. Thus, when the drive source is rotated in one or the other direction, the frame can 312 to be moved forwards and backwards.

The frame 312 has an upper surface, as in 33 and 35 shown, which is slightly higher than the main lines 304 , He also has a rear section, which has a pair of left and right bearings 316 each having a width-centered center. A single scraper shaft 317 goes through the camps 316 and extends substantially from left to right, to a front portion of each of the side walls 301 , The scraper shaft 317 has tabs that over all mains 304 and the air distribution pipes 305 to run.

A plurality of drooping elements 318 extend from the scraper shaft 317 out, like in 33 shown. The hanging elements 318 have some elements that are slightly different from a center of the frame 312 spaced apart on opposite sides thereof, and the others depend from opposite end portions of the scraper shaft 317 down. The first drooping elements 318 have lower ends, each with a first pair of right and left scrapers 319 are provided, and the other drooping elements 318 have lower ends paired with a second right and left scraper 320 are formed.

Each of the scrapers 319 and 320 gets around the scraper shaft 317 rotated so that it can be switched to the Abschab- and collection position shown or in a forward raised upward return position and vice versa. To perform the switching, a lever protrudes 321 from a longitudinal center position of the scraper 317 upwards and has an upper end that weighs 322 , which is designed as a kind of role is provided. A center of gravity changes from a front section of the weight 322 to a rear portion thereof, or vice versa, to switch from the scraping and collecting position to the return position, or vice versa. This change of center of gravity is carried out by the weight 322 against fixed stops that pushes the weight 322 opposite and at the ends of the directions (R) and (F) in 32 are arranged, in front of the corresponding limits of the forward and backward movement.

Each of the scrapers 319 can be so wide that it is between the central guide rail 311 and the opposite socket 303 extends. Furthermore, each of the second scrapers 320 be so wide that it is between the side walls 301 and the pedestal 303 extends. However, they should be so long that they are under the air distribution tubes 305 there is reason to fear that they are dealing with their vertical movement with the air distribution pipes 305 hinder. That's why everyone owns the scraper 319 and 320 a predetermined narrow width, which does not cause any hindrance even with vertical movement.

If, however, as in 33 shown each of the scrapers 319 and 320 Having a small width, it can remove the deposits in an area below the air distribution pipes 305 lie, do not scrape off and collect. Accordingly, there are Zuführschaber 323 provided these deposits to the front surfaces of the scraper 319 and 320 to lead. Each of the feeding scrapers 323 has a main plate (a) directed forward and rearward, and front and rear oblique plates (B), so that a bent shape is formed.

The frame 312 has a front and an opposite back, on which struts 325 are attached. A front and a rear horizontal bar 326 are at the pursuit 325 attached so that they go over the frame 312 , the main lines 304 and the air distribution pipes 305 to run. The horizontal bars 326 define a space through fasteners 327 is strengthened by the scraper shaft 317 passes. Vertical bars 328 are through these horizontal bars 326 attached, causing the feed scraper 323 be attached to the lower ends.

32 and 35 show how the deposits in direction (F) are scraped off and collected. At this time, the air distribution pipes may or may not blow in air. In this state of scraping and collecting are the corresponding scrapers 319 and 320 controlled by vertical stops in 34 and 35 Not are shown in order not to get backwards. The frame 312 is pulled in the direction (F). Although the scrapers 319 and 320 do not directly scrape or collect the deposits that are in an area below a room, in the forward and reverse directions through the air distribution pipes 305 is defined, scrape the feed scraper 323 moving through this area, the deposits in the directions indicated by the arrows (U) (see 32 ), and in an oblique direction, and pass them to the front surfaces of the scraper 319 and 320 further. Regarding the central first scraper 319 The deposit on its two sides is through the guide rail 311 and the main plate (a) of the feed plate 323 controlled, whereby a pocket shape is formed in the forward direction by the first scraper 319 is scraped free. Regarding the second scraper 320 The deposit also forms a pocket shape and becomes forward through the second scraper 320 scraped while dodging through the main plate (a) and the side wall 301 is prevented. The deposits caused by the scraper 319 and 320 are brought to a location where the depression or suction is present, as in the upper section in FIG 32 presented and disposed of.

At the end of the scraping and collection process, the lever becomes 321 tilted backwards and switched, and the weights 322 beat against the attacks opposite them. This allows the scrapers 319 and 320 as indicated by the arrows in 34 and 35 be lifted up shown. In this condition, the weight becomes 322 stopped by the stops (not shown) while rotating and in a direction to the right in 34 and 35 are pressed, whereby the scrapers are guided in the return position. Subsequently, the revolving element 315 pulled in the direction indicated by the arrow (R), causing the frame 312 runs back, taking the scraper 319 and 320 are raised. At this point, the scrapers grind 319 and 320 do not return the deposits. Although the feed scraper 323 also run back, the deposits along the inclined plates (b) of these feed scraper 323 from the rear portion to a front portion, and they are collected together with the accumulated debris during the next scraping and collecting operation so that they are unlikely to be looped back. At the end of the backward movement, a lot of deposits remain corresponding to the dimensions of the rear inclined plates (b). This can be solved by adjusting the return positions (the raised positions) of the scraper 319 and 320 not in the forward direction but in the reverse direction (the direction (R)).

Every scraper 319 and 320 has a small width to all areas except the area below the air distribution pipes 305 to treat. However, each of them may have such a large width extending into the areas below the air distribution tubes 305 extends. The scrapers 319 and 320 however, should be timed so that they do not interfere with the air distribution pipes 305 hamper when switched vertically. Although the feed scraper 323 are equipped with the main plates (a), these may also be omitted and thus have only front oblique plates and rear oblique plates (b), so that they form a V-shape in plan view, or curved in shape as a whole like a U be.

36 to 38 show a device for scraping and collecting sludge of another particularly simple type, which is designed to be applied to a rectangular sedimentation tank. 37 shows a cross-sectional view taken along line XX in FIG 36 , 38 is a cross-sectional view along line YY in 36 , In these pictures are sidewalls 401 provided, which are opposite in the right and left direction. The direction in which the side walls 401 is considered to be the widthwise direction of the pelvis, and the direction perpendicular thereto is considered to be the longitudinal direction of the pelvis (forward and backward directions). The opposite walls in the longitudinal direction are not shown, but the left out 36 and 37 is equipped with a flow-aligning section which introduces the waste water having a permeable shape or the like. Below the flow orientation section is a hollowed out depression (mud well). This is only in 10 and 11 shown. A floor 402 of the basin that is in 31 is inclined at a slight angle to the lower left, although it is difficult to see from the figure.

numeral 403 denotes a carriage having a main body 404 which is formed of a single long rectangular tube, mounts 405 Opposite on the right and left sides of each of the front and rear ends of the main body 404 are provided, and bearings 406 detachable on the side brackets 405 are attached. The main body 404 has an end portion that can be closed to prevent mud or the like from entering. For the main body 404 For example, a wide variety of elements may be used, such as a round tube, a hollow steel, or a mountain-shaped steel element.

Camps 406 are in pairs at the front and the rear end while being opposed to each other and spaced from each other in the left and right directions. A common wave 407 goes through every pair of camps 406 through and stands out. The common wave 407 is a little shorter than the width of the basin and may be in the form of a tube. It should be noted that there is a case where either the front or the rear common shaft is omitted. impellers 408 are intended to be in left and right direction of each common wave 407 spaced from each other to rotate. Every impeller 408 is stable and has a socket 409 and plates 410 with the common wave 407 connected, which prevents the elimination of the side surfaces, so that it can rotate independently. This wheel 408 is stable and may have projections on its tread to prevent slippage and drain, although no tread pattern is shown. A tubeless tire can be used as an impeller 408 be used. Also, an endless crawler around the front and rear wheels 408 be looped. Both on the left and on the right side is only one impeller 408 arranged. But there may also be several on each page. In this case, one of the plurality of impellers has a larger diameter and the remainder may be formed as an auxiliary wheel with a diameter slightly smaller than the large diameter.

An interlocking lever 412 protrudes from an outer border of a section corresponding to a space passing through the bearings 406 at a central portion of each of the front and rear common waves 407 are defined, so that they are formed in pairs and can be arranged and switched either under a forward rising angle or a rearwardly increasing angle. The main body 404 of the carriage has a body around which is disposed a slider having a pair of left and right plate members over rollers 414 is movable so that it is movable in the forward and backward direction forward and backward. An interlocking connector 416 is connected to a room by the slider 415 and each of the interlocking levers 412 is defined. When the slider 415 moving forward and backward as in 37 is shown, thus swinging simultaneously the front and rear interlocking lever 412 forward and backward.

The slider 415 has a lower portion, at the front and rear end anchors 418 are attached. Each end section of a drawing and conveying means 420 a connection chain is with the anchoring 418 connected. As if by an imaginary line in 37 is shown, is the drawing and conveying means 420 about a driven wheel 421 looped, so that its direction of rotation is switched from a normal to a reverse by means of a drive source, which is provided above the basin, but not shown, and vice versa. It is with the front chain anchorage 418 through a first load roller 422 connected. The drawing and conveying equipment 420 that is about the driven wheel 421 is moved by a third load roller 423 via a rearward second load roller 424 with the rear chain anchorage 418 connected. Here, the drawing and conveying moves 420 in the form of an upper and a lower element that run parallel to each other. These will be through a next guide rail 425 guided.

The guide rail 425 is in detail in 38 shown. She has a lower guide 426 on, which consists of a rectangular tube and has a diagonal, which should stand vertically, an upper guide 427 that with the bottom guide 426 in the posture as V is connected and fixed, lateral guide plates 428 that the upper leadership 426 with the lower guide 427 connect, and horizontal flanges 430 , which are arranged in pairs on the left and right side and by anchorages 429 be fastened, all of these elements are formed in an integral structure.

The guide rail 425 has a rear end, in front of the second load roller 424 in 37 is disposed, and a front end which is disposed above the recess, which on the side of the third load roller 423 is arranged. It is attached along the midline of the width of the basin. While a lower circulation section of the drawing and conveying 420 gently within the lower guide 426 the guide rail 425 moved forward and backward, without coming into engagement with the latter, moves an upper circulation section of the drawing and conveying means 420 gently within the upper guide 427 forward and backward. In ver tical direction conical and opposing lateral spacer rollers 433 turn around waves 432 coming from the side brackets 405 hang. The side spacer rollers 433 approach the side plates 428 and come in contact with them, thereby providing a means 434 for correcting the deviation in the left and right direction is formed. The side spacer rollers 433 can also be designed in the form of round punches.

On the other hand, reference numeral 436 a mud scraper, which is at a front of the common shaft 407 by a plurality of holders 437 that is attached to it. The scraper 436 has two parts. The front Part is an integral single plate and the other rear part consists of a left and right section that can be separated from each other.

The mud scraper 436 has a section leading to an impeller 408 belongs. As in 36 illustrated, the portion is bent so that it extends forward and a projection 436a forms. The reference number 438 denotes rollers at the opposite ends of the scraper 436 which form another system for preventing deviation in the left and right directions. The reason why the back part of the mud scraper 436 consists of the left and right sections separated, is to prevent the rear interlocking connector 416 yourself with the front integral part of the scraper 436 gets in the way when the latter is lifted.

36 to 38 show the scraping and collecting state where the scraper 436 is lowered to scrape the mud and forward in the direction of the depression. At this time, the driven wheel 421 in 37 rotated in a direction indicated by an arrow with a solid line, whereby the upper circumferential portion of the pulling and conveying means 420 is pulled in the direction of (F) ge. The slider 415 is stopped at a position indicated by a solid line by a stop, not shown, and the scraper 436 scrapes and collects the mud while maintaining its vertical position. This scraper 436 can scrape and collect in a stable and reliable way, thanks to the fact that the wheels 408 , which are arranged at four positions, roll over the pelvis. In case they dodge in left and right direction, contact the side spacer rollers 433 the guide rail 425 to correct the deviation. If the scraper 436 has arrived above the recess and the scrapping and collecting operation is completed, the limit switch allows the drive source to reverse rotate the direction of rotation of the driven wheel 421 to switch in a direction indicated by an arrow with a dashed line. Thereby, the lower circumferential portion and the upper circumferential portion of the pulling and conveying means 420 to move in direction (F) or in direction (R). The slider 415 is moved in direction (R). Thus, both become interlocking moving levers 412 rotated backwards, as shown by an imaginary line, to lift the front and back of the scraper in the return position. The drawing and conveying equipment 420 is driven continuously to the slider 415 at a position represented by an imaginary line to stop after abutment on a non-illustrated stop, whereby the carriage 403 can be driven again in the direction (R) to perform a return movement.

When the sled 403 has returned in the direction (R), the limit switch detects the timing to switch the rotation of the driven wheel in the direction indicated by the arrow with the solid line. This pulls the upper circumferential portion of the pulling and conveying means 420 in the direction indicated by arrow (F), which is the slider 415 pull to the stop, not shown. In the meantime, the front and rear interlocking levers 412 in the forward direction and interlocking by the intermeshing moving connectors 416 rotated, causing the common shaft 407 turns in the same direction. This turns on the scraper 436 , which is raised as shown by the imaginary line, into the vertical scraping and collecting position indicated by the solid line. The drawing and conveying equipment 420 is pulled continuously in the direction indicated by arrow (F) around the carriage 403 to scrap and collect in the same direction.

In this embodiment, an independent propulsion system for a sedimentation basin was formed. However, two devices for scraping and collecting sewage sludge may also be arranged in two adjacent basins formed by a single drawing and conveying means 420 be brought into an interlocking movement relationship. These scraping and gathering devices are moved in mesh by a single drive source. Such a drive system for two basins is applicable to this embodiment. In this case, eg as in 39 shown, a guide rail 440 which is angled and has a fixed flange on its underside 439 has placed on the bottom of the basin. The means for correcting the deviation in the left and right direction can only be formed by the arrangement of conical and opposite lateral spacer rollers 441 that the guide rail 440 to contact. The guide rail 440 may be a hollow steel or a steel element with semicircular cross-section. As another correction means is an angular guide rail 442 deposited on the bottom surface of the basin and fastened directly by means of anchors, and a lateral roll 443 can be brought into contact with a vertical side, as in 40 is shown. Alternatively, the correction means by a guide rail 445 be formed of a mountain-shaped steel and a side spacer roll 446 consists. Although the common wave 407 is rotatably arranged, it can in addition in the above-mentioned embodiment, non-rotatably mounted on the carriage 403 be attached, and the wheels 408 and the mud scraper 436 can be arranged rotatable about it. Besides, the wheels are 408 arranged so that they are directly above the ground 402 of the pelvis. But it can also be another rolling surface element laid on the ground, so that the wheels roll on it. Besides, the common wave is 407 with the wheels 408 and the mud scraper 436 fitted. There is a case where a shaft for the impeller 408 separated from a shaft for the scraper 436 is provided. In this case, each of the shafts may be fixed or rotatable. In addition, both are staggered in height so that they reinforce each other vertically. In the previous embodiment, the wheels are 408 arranged at a front and rear end, wherein a total of four are present, but it can also be provided a total of three wheels, so that two wheels are located at the front end and a wheel is located at the rear end.

Claims (17)

Apparatus for scraping and collecting sludge, which has: a guide rail, on a bottom of a rectangular processing tank in plan view lies, the side walls that faces lie, as well as a front wall and a back wall perpendicular to these sidewalls are arranged, one end of the basin equipped with a recess is, the guide rail through a middle section between the two side walls in a longitudinal direction, the one forward and reverse direction denotes, runs, and a sled with wheels running on the guide rail is provided so that it reciprocates in the forward and backward directions, wherein the sledge has a scraper sludge, the be stored on the left and right side of the guide rail should scrap, in the direction of the recess and collects, leaving the mud scraper in the vertical direction and rotatable by a lowered scraping and collection position switchable to a raised return position is and vice versa, being over the processing tank a drive section is arranged, the continuously a driven wheel rotates and its direction of rotation switches from a normal direction to a reverse direction or the other way around, wherein the scraper sludge via a drawing and conveying means, around the driven wheel and a direction change wheel located in the processing basin is wound, twisted and either to the top or the lower position is switched, and then the Carriage is pulled forwards or backwards. Apparatus for scraping and collecting sludge according to claim 1, wherein the sludge scraper at least at a front and a rear end of the carriage is arranged so that the Mud scraped off by the mud scraper at the back end, collected and moved forward was arranged by the front of the mud scraper at the rear end Mud scraper is further collected and moved forward, leaving the Sludge is pushed into the depression. Apparatus for scraping and collecting sludge according to claim 2, wherein the carriage has a main body, which is formed from a single long element, in the forward and backward direction has a constant cross section, and wherein the main body of the Schlittens has a front end and a rear end, where the mud scrapers are arranged, with the front and rear Mud scraper at the same time and interlocking by the drawing and funding via along be moved in an intermeshing moving element, which is parallel to the main body the carriage moves forwards and backwards. Apparatus for scraping and collecting sludge according to claim 3, wherein the main body of the carriage consists of a channel-shaped Element, an angle element, a square pipe or the like is formed, and that along interlocking moving element through the space in the groove or in the tube passes. Apparatus for scraping and collecting sludge according to one of the claims 1 to 4, wherein the guide rail in longitudinal direction having a continuous interior through which the drawing and funding passes. Apparatus for scraping and collecting sludge according to one of the claims 1 to 5, wherein the scraper has a vertical height in the range from 150 mm to 400 mm and is adjustable to a deposition state to meet the sludge in the processing basin. Apparatus for scraping and collecting sludge according to one of the claims 2 to 6, wherein the front and rear mud scraper a space longitudinal define, in which an auxiliary scraper is arranged. Apparatus for scraping and collecting sludge according to any one of claims 1 to 7, wherein a support projects upwardly from the sled, and a foam collecting slab which supports the foam on the slab Collects water in one direction, is provided through an upper end of the support, so that it floats and sinks. Apparatus for scraping and collecting sludge, which has: a sled on a floor of a Cross-section of rectangular processing tank, e.g. a sedimentation basin, is provided, the opposite side walls as well as a front wall and a back wall which are arranged perpendicular to these side walls, wherein one end of the basin is equipped with a recess, and the carriage passing through a widthwise middle section the pelvis runs, a common shaft projecting on the carriage in the left and right direction, and impellers, the on left and right projections are provided to be rotatable and rollable on the bottom of the basin to be, being a mud scraper around the common shaft around is arranged, around which also the wheels are arranged, and where the sludge scraper in a scraping and collecting position, for scraping and collecting the sludge in the direction of the well, is lowered, when he moves forward and he moves up into a return position is lifted when it moves backwards, the Carriage is arranged so that it is forward and backward with a means for preventing deviation in the left and right direction emotional, being over the processing tank a drive section is arranged, the a driven wheel continuously rotates and its direction of rotation from a normal direction to a reverse direction and vice versa, the mud scraper by a drawing and funding, that around the driven wheel and a directional change wheel in the processing basin is arranged, twisted, turned and either in the upper Position or the lower position is switched, and then the Carriage is pulled forwards or backwards. Apparatus for scraping and collecting sludge according to claim 9, wherein said means for preventing deviation in left and right direction has a guide rail, the on a widthwise middle section of the bottom of the basin lies, and a distance roll, which protrudes from the carriage and along the guide rail extends. Apparatus for scraping and collecting sludge, which is equipped with a rotating scraper, a scraper comprising the sludge on a soil surface of a round sedimentation basin scrapes and collects, then in a central recess falls the scraper arm being driven by a scissoring arm located in the scraper arm Wheel being rolled along the bottom of the pool, while it is driven by a drive source and a rotational movement performs. Apparatus for scraping and collecting sludge according to claim 11, wherein the driven wheel at an outer end the scraper arm is provided, and the drive source also at the Scraper is arranged. Apparatus for scraping and collecting sludge according to claim 11 or 12, wherein the scraping arm is provided in such a way that he turns around a pipe for introducing sewage, the from a central portion of the basin through the central depression peaking. Apparatus for scraping and collecting sludge according to claim 11, wherein the drive source is provided in such a way that they over the water surface of the pelvis is rotatable, and aligned to their Power is transferable to the driven wheel. Apparatus for scraping and collecting sludge, which has: a rotating scraper that has a scraper, the mud on a bottom of a round sedimentation basin scrapes and collects and drops into a central depression, and which is designed to turn above the water and forward the floating foam in the pool radially outward, while he collects this, leaving the foam in a foam removal device is eliminated the apparatus for scraping and collecting the further as a means for collecting and forwarding the foam has in the radial direction of the pelvis to the outside a collecting and forwarding element, that can rotate, leaving the foam from one in the radial direction inner side of the basin to a radially outer side of the basin collects and forwards, while it is on the water of the Pelvis floats, and then turns to the radial direction to return to the inner side. Apparatus for scraping and collecting sludge according to claim 15, wherein the means for forwarding the foam in the radial direction of the pelvis to the outside a rear side in the direction of rotation has, on which a mud scraper rotatably arranged in the basin is. Apparatus for scraping and collecting sludge, comprising: an air supply main pipe, which at an upper Po The invention relates to a bottom wall of a cross-sectionally rectangular processing basin having left and right side walls facing each other, and a front wall and a rear wall arranged perpendicular to the side walls, wherein a longitudinal end of the basin is provided with a means for Disposal of the scraped and collected deposits is equipped, wherein the main line is installed so that it extends parallel to the side walls, wherein the device further comprises an air distribution pipe, which protrudes from the main line while it crosses them, so that it towards extending the side wall and communicating with the main conduit, and wherein the apparatus scraps and collects deposits deposited on the bottom wall of the processing pool such as an oxygenation pool and the deposits toward the means for disposing of the deposits wherein a guide rail on the bottom wall lies between the side walls and extends in the longitudinal direction, which is a forward and backward direction, wherein the guide rail has an upper portion which is provided with a frame such that this in the forward and backward direction hin- and running, and wherein a feed scraper is provided which is stationary, and another scraper of the vertically switchable type, wherein the first feed scraper is aligned, the deposits, which have deposited in a region below the air distribution pipe, in the direction of an outer region and the other scraper is lowered to collect and transfer the deposits deposited on the bottom wall together with the deposits scraped off by the feeding scraper, while on the other hand it can be lifted up backwards without scraping operation in ho to return to a raised state.