CN219314778U - Integrated sewage treatment system - Google Patents

Abstract

The utility model provides an integrated sewage treatment system, and belongs to the technical field of sewage treatment. The integrated sewage treatment system comprises an adjusting tank, a first stirring tank, a sludge tank, a sewage returning part, a dredging part and a reflux part. According to the utility model, the sewage returning part conveys sewage in the first stirring tank into the sludge tank, the sludge tank deposits the sewage to form desilting liquid and sludge which are arranged up and down, the reflux part conveys the desilting liquid into the regulating tank, the regulating tank and the first stirring tank can treat available water for the desilting liquid, the water resource utilization rate is improved, the desilting part extracts the sludge in the sludge tank, manual cleaning is not needed during sewage discharge, and the operation is convenient.

Description

Integrated sewage treatment system

Technical Field

The utility model relates to the technical field of integrated sewage treatment, in particular to an integrated sewage treatment system.

Background

The integrated sewage treatment device is suitable for water sources with smaller water quantity and more stable water quality, the existing integrated sewage treatment device can deposit sludge in sewage in a sludge pond after sewage treatment, the sewage needs to be cleaned manually at regular intervals, the operation is troublesome, the cost of sewage treatment is increased, the sewage is directly discharged, and the water utilization rate is lower.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide an integrated sewage treatment system.

The utility model provides an integrated sewage treatment system which comprises an adjusting tank, a first stirring tank for receiving sewage in the adjusting tank, a sludge tank for depositing the sewage to form desilting liquid and sludge which are arranged up and down, a sewage returning piece for conveying the sewage in the first stirring tank into the sludge tank, a desilting piece for extracting the sludge in the sludge tank, and a return piece for conveying the desilting liquid in the sludge tank into the adjusting tank.

Further, the dredging piece comprises a dredging pump and a drain pipe with two ends respectively connected to the bottom of the sludge tank and the dredging pump.

Further, the sewage return piece comprises a sewage return pipe, one end of the sewage return pipe is connected to the bottom of the first stirring tank, and the other end of the sewage return pipe is connected to the sludge tank at a position below the preset height.

Further, the reflux piece comprises a reflux pipe, one end of the reflux pipe is connected with the regulating tank, and the other end of the reflux pipe is connected with the position above the connection position of the sludge tank and the sewage return pipe.

Further, the sewage treatment device also comprises a filter screen connected to the inner wall of the sludge tank, wherein the filter screen is connected to the inner wall of the sludge tank at a position between the connection part of the return pipe and the connection part of the return pipe.

Further, the sludge treatment device also comprises a stirring piece for stirring the sludge in the sludge tank.

Further, the stirring piece comprises a rotating shaft, stirring blades and a motor for driving the rotating shaft, wherein the output end of the motor is connected to one end of the rotating shaft, and the other end of the rotating shaft is connected to the stirring blades; when the connecting line of the connecting part of the output end of the motor and the rotating shaft and the connecting part of the stirring blade and the rotating shaft is intersected with the filter screen, the other end of the rotating shaft penetrates through the filter screen and is connected with the stirring blade.

Further, the axis of the rotation shaft coincides with the axis of the sludge tank, the motor is arranged at the top of the periphery of the sludge tank, the output end of the motor penetrates through the sludge tank and is connected with the top of the rotation shaft, the stirring She Taojie is arranged at the bottom of the rotation shaft, and the bottom of the stirring blade is higher than the bottom of the inner side of the sludge tank.

Further, the dirt return piece further comprises a first pumping pump arranged on the dirt return pipe.

Further, the return member further comprises a second pump arranged on the return pipe.

The integrated sewage treatment system has the following beneficial effects:

the back dirty piece is carried the sewage in the first stirred tank to in the sludge impoundment, and the sludge impoundment is deposited sewage and is formed desilting liquid and mud that sets up from top to bottom, and the back flow piece is carried desilting liquid to in the equalizing basin, and equalizing basin, first stirred tank can handle usable water to the desilting liquid, have improved water resource utilization, and the desilting piece is taken out the mud in the sludge impoundment, need not to use the manual clearance when the blowdown, simple operation.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the utility model. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.

FIG. 1 is a schematic diagram of an integrated wastewater treatment system according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing the structure of the inside of a sludge tank in an integrated sewage treatment system according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a stirring member in an integrated sewage treatment system according to an embodiment of the present utility model.

In the figure: 1-adjusting tank, 2-first stirring tank, 3-sludge tank, 31-first mounting hole, 4-back dirt piece, 5-back dirt piece, 6-stirring piece, 61-motor, 62-axis of rotation, 63-stirring leaf, 7-filter screen, 8-dredging piece, 81-blow off pipe, 82-dredging pump.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.

Please refer to fig. 1-3. The integrated sewage treatment system comprises a regulating tank 1, a first stirring tank 2 for receiving sewage in the regulating tank 1, a sludge tank 3 for precipitating the sewage to form desilting liquid and sludge which are arranged up and down, a sewage return piece 4 for conveying the sewage in the first stirring tank 2 into the sludge tank 3, a desilting piece 8 for extracting the sludge in the sludge tank 3, and a reflux piece 5 for conveying the desilting liquid in the sludge tank 3 into the regulating tank 1.

Here, equalizing basin 1 is discharged sewage into first agitator tank 2 in, first agitator tank 2 handles sewage, the mud content in the sewage is more, can't carry out sewage treatment of next step, need handle the mud in the sewage in the first agitator tank 2, carry the sludge impoundment 3 through returning the sewage in the sewage piece 4 with first agitator tank 2, the sewage is settled in the sedimentation tank, little clod in the sewage deposits the below and forms mud, form the desilting liquid that contains the mud content less in the mud, then form desilting liquid and the mud that sets up from top to bottom in the sedimentation tank, carry out further purification treatment to the desilting liquid that is located in the sludge impoundment 3 through the reflux piece 5, finally can obtain comparatively clean water, these water can reuse, the cyclic utilization rate of water resource has been improved, the mud that is located the below in the sludge impoundment 3 is taken out to the manual work has not only effectively formed the desilting liquid that has formed the mud volume in the sedimentation tank, the manual work that has realized that the manual work has been carried out the manual work of this manual work has realized carrying out the manual cleaning to the sewage to the manual work in the sewage can realize the manual sludge cleaning device again.

Specifically, this system can include integral type sewage treatment case body, and equalizing basin 1 and first stirring pond 2 all set up in integral type sewage treatment case body, and integral type sewage treatment case body is including equalizing basin 1, first stirring pond 2, second stirring pond, aeration exchange tank, oxygenation pond and the sedimentation tank that set gradually. The sludge tank 3 can be buried together with the integrated sewage treatment tank body.

Specifically, two adjacent ponds intercommunication sets up, and first stirring pond 2 receive equalizing basin 1 exhaust sewage, and second stirring pond receives first stirring pond 2 exhaust sewage, and aeration exchange pond receives second stirring pond exhaust sewage, and aeration exchange pond exhaust sewage is received to the oxygenation pond, and sedimentation tank receives oxygenation pond exhaust sewage. The main function of the regulating tank 1 is to regulate water quality and water quantity, and the front end of the regulating tank 1 is generally provided with a grid for intercepting larger sundries. The first stirring tank 2 and the second stirring tank can be internally provided with stirring and crushing devices, the first stirring tank 2 can be used for carrying out preliminary fine crushing treatment on sundries such as larger particles entering the tank body, and the second stirring tank can be used for carrying out further fine crushing treatment on the sundries. The aeration exchange tank can make the activated sludge breathe aerobically, further decompose organic matters into inorganic matters, achieve the purpose of removing pollutants, and mainly remove COD in water by aerobic microorganisms, wherein the growth and propagation of the microorganisms need to dissolve oxygen. The oxygenation tank can enable the activated sludge to continue oxygenation and biochemical reaction. The microbial metabolism in the oxygenation tank generates a large amount of sludge, the sedimentation tank is used for separating mud from water, part of the sludge flows back to the front end, and the supernatant fluid is discharged to the next working procedure.

Referring to fig. 1, the dredging member 8 may include a dredging pump 82, and a drain pipe 81 having both ends connected to the bottom of the sludge tank 3 and the dredging pump 82, respectively.

Specifically, if one end of the sewage drain pipe 81 is connected to the middle or upper portion of the sludge tank 3, the sludge located at the bottom of the sludge tank 3 cannot flow into the sewage drain pipe 81, and the sludge in the sludge tank 3 cannot be discharged cleanly, so that the sewage drain effect is improved, one end of the sewage drain pipe 81 is connected to the bottom of the sludge tank 3. The dredging piece 8 can also only comprise a drain pipe 81, and the drain pipe 81 can also discharge the sludge in the sludge tank 3 completely, but the discharging efficiency is lower only by relying on the drain pipe 81, in order to improve the discharging efficiency of the sludge, the other end of the drain pipe 81 is connected with a dredging pump 82, the dredging pump is plugged in, the sludge is automatically extracted, and the extracting efficiency is higher. The dredging pump 82 may be a wide selection product SDP submersible sewage pump or a Kaidi sewage pump.

Specifically, one end of the blow-down pipe 81 extends to the inside of the sludge pond 3, and the other end of the blow-down pipe 81 is connected with a sludge inlet end on the dredging pump 82, a sludge discharge port on the dredging pump 82 is connected with a sludge discharge conveying pipeline, and the conveying pipeline can select a discharge point to extend according to requirements, so that manual cleaning is not needed during sewage discharge.

Referring to fig. 1, the return member 4 may include a return pipe having one end connected to the bottom of the first agitation tank 2 and the other end connected to the sludge tank 3 at a position below a predetermined height.

Specifically, return dirty pipe one end can connect in first stirred tank 2 upper portion or middle part, but when return dirty pipe one end is connected in first stirred tank 2 upper portion or middle part, the sewage that is located first stirred tank 2 bottom can't be through returning dirty pipe and arrange into in the sludge impoundment 3, so in order to avoid above-mentioned problem, all connect the one end of returning dirty pipe in first stirred tank 2 bottom, for the convenience of installing return dirty pipe, connect the one end of returning dirty pipe in the bottom of first stirred tank 2 a side, thereby can be with the sewage in the first stirred tank 2 in arranging into sludge impoundment 3 as much as possible, connect the return dirty pipe other end in sludge impoundment 3 on the position department that is located the height below in advance, and set up the junction of return pipe and sludge impoundment 3 in the top of return dirty pipe and sludge impoundment 3, if the height at the top of sludge impoundment 3 is the highest in this application, then the position department that the height below is not top in the sludge impoundment 3 is, thereby the position department that can be in order to make the continuous sedimentation tank 3, the bottom of course, the other end that can be connected in order to make the sludge impoundment 3 fast, thereby the other end of returning dirty pipe can be convenient for the sludge pipe is installed, the other end of the side of the quick side of the sludge impoundment.

Specifically, the sewage return pipe may be a first connection pipe when the first agitation tank 2 and the sludge tank 3 are closer, and may be a plurality of second connection pipes connected to each other when the first agitation tank 2 and the sludge tank 3 are farther, and the adjacent two second connection pipes may be detachably connected, and the adjacent two second connection pipes may be connected through a flange or a socket connection.

Referring to fig. 1, the return 5 may include a return pipe having one end connected to the regulating reservoir 1 and the other end connected to the sludge tank 3 at a position above a predetermined height.

Specifically, after the sewage in the first stirring tank 2 enters the sludge tank 3, the clod is sunk to form desilting liquid and sludge which are arranged up and down, if the joint of the other end of the return pipe and the sludge tank 3 is not higher than the joint of the return pipe and the sludge tank 3, the sludge easily enters the return pipe and then enters the regulating tank 1 to influence the recycling of the desilting liquid, so that the problem is avoided, the other end of the return pipe is connected to the position, above the preset height, on the sludge tank 3, namely the joint of the return pipe and the sludge tank 3 is positioned above the joint of the return pipe and the sludge tank 3. The other end of the return pipe may be connected to the top of the sludge tank 3.

Specifically, when the distance between the regulating tank 1 and the sludge tank 3 is relatively short, the return pipe can be a third connecting pipe, when the distance between the regulating tank 1 and the sludge tank 3 is relatively long, the return pipe can be a plurality of fourth connecting pipes which are mutually connected, two adjacent fourth connecting pipes can be detachably connected, and two adjacent fourth connecting pipes can be connected through flanges or in a sleeved mode.

As an integrated sewage treatment system in this embodiment, the integrated sewage treatment system may further include a filter screen 7 connected to the inner wall of the sludge tank 3, wherein the position where the filter screen 7 is connected to the inner wall of the sludge tank 3 is lower than the position where the return pipe is connected to the sludge tank 3.

Specifically, sewage is precipitated in the sludge tank 3, sludge falls to the bottom of the sludge tank 3, the desilting liquid moves upwards to be positioned on the upper part of the sludge tank 3, and the filter screen 7 can filter the desilting liquid, so that the desilting liquid is further purified. The lateral part detachably of filter screen 7 connects in sludge impoundment 3 inner wall, and the bottom surface of sludge impoundment 3 inboard is parallel to filter screen 7, and the area of filter screen 7 can equal the bottom area of sludge impoundment 3 inboard.

The integrated sewage treatment system as one of the present embodiments may further include a stirring member 6 for stirring the sludge in the sludge tank 3.

Specifically, the sludge blocks are easy to agglomerate when the sludge is deposited at the bottom of the sludge pond 3, and cannot be cleaned by the dredging pump 82, so that the sludge accumulated at the bottom of the sludge pond 3 is stirred and loosened or floated by the stirring piece 6, and the sludge agglomerates are prevented from being cleaned by the dredging pump 82.

Referring to fig. 1 to 3, the stirring member 6 may include a rotation shaft 62, a stirring blade 63, a motor 61 to drive the rotation shaft 62, an output end of the motor 61 being connected to one end of the rotation shaft 62, and the other end of the rotation shaft 62 being connected to the stirring blade 63; when there is an intersection between the filter screen 7 and a connection line between the output end of the motor 61 and the rotation shaft 62 and a connection line between the stirring blade 63 and the rotation shaft 62, the other end of the rotation shaft 62 penetrates the filter screen 7 and is connected to the stirring blade 63.

Specifically, the motor 61 drives the rotating shaft 62, the rotating shaft 62 drives the stirring blade 63, and the stirring blade 63 stirs the sludge, so that automatic stirring is realized, and stirring efficiency is improved. Still including connecting in the filter screen 7 of sludge impoundment 3 inner wall, filter screen 7 connect in the sludge impoundment 3 inner wall be located with the back flow junction and with the back under the precondition of the junction of dirty pipe the junction department, set up stirring piece 6 again, stirring piece 6 includes axis of rotation 62, set up stirring leaf 63 on axis of rotation 62, be used for driving axis of rotation 62's motor 61, when there is the intersect in the junction of motor 61's output and axis of rotation 62 and stirring leaf 63 and the junction of axis of rotation 62 and filter screen 7, the other end of axis of rotation 62 is passed filter screen 7 and is connected with stirring leaf 63, stirring leaf 63 can be located the below of filter screen 7 when filter screen 7 is on a parallel with the inboard bottom surface of sludge impoundment 3.

Referring to fig. 1 to 3, the axis of the rotation shaft 62 may coincide with the axis of the sludge tank 3, the motor 61 is disposed at the top of the periphery of the sludge tank 3, the output end of the motor 61 passes through the sludge tank 3 and is connected with the top of the rotation shaft 62, the stirring blade 63 is sleeved at the bottom of the rotation shaft 62, and the bottom of the stirring blade 63 is higher than the bottom of the inner side of the sludge tank 3.

Specifically, motor 61 is installed to the top center department of sludge impoundment 3, be connected with axis of rotation 62 on motor 61's the output, the cover is established on the outer anchor ring of bottom of axis of rotation 62 and is installed stirring leaf 63, further, run through at the top of sludge impoundment 3 and be equipped with first mounting hole 31, the output of motor 61 passes first mounting hole 31, extend to the inside of sludge impoundment 3 and be connected with the top of axis of rotation 62, the bottom of axis of rotation 62 is installed with stirring leaf 63, the bottom of stirring leaf 63 is laminated mutually and is not extruded each other with the inboard bottom of sludge impoundment 3, avoid stirring leaf 63 and the mutual scraping of sludge impoundment 3 bottom, thereby make stirring leaf 63 can stir deposited piled-up mud, prevent that the mud caking can't clear up through dredging pump 82. The first bearing can be installed at the top of the inner wall of the sludge pond 3, the through hole in the first bearing is aligned with the first installation hole 31, the rotating shaft 62 is connected to the inner ring of the first bearing, the output end of the motor 61 can be fixedly connected to the top of the rotating shaft 62, and the output end of the motor 61 can be connected to the top of the rotating shaft 62 through a coupling.

Specifically, still including connecting in the filter screen 7 of sludge impoundment 3 inner wall, filter screen 7 connects in the sludge impoundment 3 inner wall be located with the back flow junction and with the back dirt pipe the junction the position between the premise, set up stirring piece 6 again, stirring piece 6 includes axis of rotation 62, set up stirring leaf 63 on axis of rotation 62, be used for driving axis of rotation 62's motor 61, axis and the axis coincidence of sludge impoundment 3, motor 61 sets up in the top of sludge impoundment 3 periphery, the output of motor 61 passes sludge impoundment 3 and is connected with the top of axis of rotation 62, stirring leaf 63 cup joints in the bottom of axis of rotation 62, stirring leaf 63 bottom is higher than the inside bottom of sludge impoundment 3, at this moment the output of motor 61 runs through the inside of sludge impoundment 3 and is connected with the top of axis of rotation 62, and the inside bottom of sludge impoundment 3 and stirring leaf 63 are installed to the inside bottom of the inside of axis of rotation 62 after running through from the top center department of filter screen 7, the bottom of stirring leaf 63 and the inside bottom of sludge impoundment 3 and not extrusion each other, thereby make stirring leaf 63 can get up the mud and sediment and prevent to clear up the mud pump 82 and can't clear up.

Specifically, the stirring blade 63 is installed to the cover on the bottom outer ring face of axis of rotation 62, and filter screen 7 is installed to the inside wall top position department of sludge impoundment 3, and the top of filter screen 7 is equipped with the second mounting hole of being connected with axis of rotation 62 in the rotation, and filters from the below of filter screen 7 when mud gets into sludge impoundment 3, and the desilting liquid permeates the top of filter screen 7 to accelerate the quick filtration separation of desilting liquid and mud in the mud.

The return member 4 may further comprise a first pump arranged on the return pipe.

Specifically, sewage is discharged into the sludge tank 3 only by means of the sewage return pipe, the speed is low, automatic water pumping is achieved through the first pumping pump, and the sewage pumping efficiency is improved. The first extraction pump may be a submersible sewage pump.

The return 5 may also comprise a second suction pump arranged on the return pipe.

Specifically, the dredging liquid is discharged only by virtue of the return pipe and enters the regulating tank 1, the speed is low, automatic water pumping is realized through the second pumping pump, and the dredging liquid pumping efficiency is improved. The second pump may be a fresh water pump or a sewage pump.

Specifically, the workflow of the present application: when the sewage treatment is carried out by using the sewage treatment device, when sewage in the first stirring pond 2 needs to flow back into the sludge pond 3, the sewage enters from the bottom of the sludge pond 3 through the sewage return pipe, and the sewage is filtered through the filter screen 7, the filtered sewage returns to the regulating pond 1 again through the return pipe, and the filtered sludge is piled up at the inner bottom of the sludge pond 3, at this time, the motor 61 drives the rotating shaft 62 to rotate so that the stirring blade 63 stirs piled up sludge, and the sludge is discharged through the dredging pump 82 after the stirring of the sludge, so that manual cleaning is not needed during sewage discharge, and meanwhile, the problem that the sludge caking cannot be cleaned through the dredging pump 82 is effectively solved, and the problem that the conventional integrated sewage treatment equipment needs to be cleaned by regular manual work is effectively solved.

The above description may be implemented alone or in various combinations and these modifications are within the scope of the present utility model.

It should be noted that, in the description of the present application, the terms "upper end," "lower end," and "bottom end" of the indicated orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is conventionally put in use, merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. An integrated sewage treatment system, which is characterized in that: including equalizing basin (1), be arranged in receiving the first stirring pond (2) of sewage in equalizing basin (1), be used for forming the mud pit (3) of desilting liquid and mud that sets up from top to bottom with sewage sediment, be used for carrying back dirty piece (4) in mud pit (3) with sewage in first stirring pond (2), be used for carrying back the back flow piece (5) in mud pit (3) in mud pump-out desilting piece (8), be used for in mud pit (3) desilting liquid to convey in equalizing basin (1).

2. An integrated wastewater treatment system as claimed in claim 1, wherein: the dredging piece (8) comprises a dredging pump (82) and a drain pipe (81) with two ends respectively connected to the bottom of the sludge tank (3) and the dredging pump (82).

3. An integrated wastewater treatment system as claimed in claim 1 or 2, wherein: the sewage return piece (4) comprises a sewage return pipe, one end of the sewage return pipe is connected to the bottom of the first stirring tank (2), and the other end of the sewage return pipe is connected to the sludge tank (3) at a position below the preset height.

4. An integrated wastewater treatment system as claimed in claim 3, wherein: the reflux piece (5) comprises a reflux pipe, one end of the reflux pipe is connected with the regulating tank (1), and the other end of the reflux pipe is connected with the sludge tank (3) at a position above the joint of the reflux pipe.

5. An integrated wastewater treatment system as claimed in claim 4, wherein: the sewage treatment device further comprises a filter screen (7) connected to the inner wall of the sludge tank (3), wherein the filter screen (7) is connected to the inner wall of the sludge tank (3) at a position between the connection part of the return pipe and the connection part of the return pipe.

6. An integrated wastewater treatment system as claimed in claim 4, wherein: and a stirring piece (6) for stirring the sludge in the sludge tank (3).

7. An integrated wastewater treatment system as claimed in claim 6, wherein: the stirring piece (6) comprises a rotating shaft (62), stirring blades (63) and a motor (61) for driving the rotating shaft (62), wherein the output end of the motor (61) is connected to one end of the rotating shaft (62), and the other end of the rotating shaft (62) is connected to the stirring blades (63); when the intersection point exists between the connecting line of the output end of the motor (61) and the rotating shaft (62) and the connecting line of the stirring blade (63) and the connecting line of the stirring blade (62) and the filter screen (7), the other end of the rotating shaft (62) penetrates through the filter screen (7) and is connected with the stirring blade (63).

8. An integrated wastewater treatment system as claimed in claim 7, wherein: the axis of rotation (62) and the axis coincidence of sludge impoundment (3), motor (61) set up in the top of sludge impoundment (3) periphery, the output of motor (61) passes sludge impoundment (3) and is connected with the top of axis of rotation (62), stirring leaf (63) cup joint in the bottom of axis of rotation (62), stirring leaf (63) bottom is higher than the bottom of sludge impoundment (3) inboard.

9. An integrated wastewater treatment system as claimed in claim 3, wherein: the dirt return piece (4) further comprises a first pumping pump arranged on the dirt return pipe.

10. An integrated wastewater treatment system as claimed in claim 4, wherein: the return (5) further comprises a second suction pump arranged on the return pipe.

Images