CN111285579A

CN111285579A - Urban inland river sludge treatment and reuse method

Info

Publication number: CN111285579A
Application number: CN202010104676.0A
Authority: CN
Inventors: 林志宏; 林少敏; 严亚辉; 张佳斌
Original assignee: Shenzhen Hongda Construction Group Co Ltd
Current assignee: Shenzhen Hongda Construction Group Co Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-06-16

Abstract

The invention discloses a sludge treatment and reuse method for urban inland rivers, which comprises the following steps: s1, pumping the sludge into a multi-stage filter box to realize multi-stage filtration of the miscellaneous stones and the impurities and form slurry; s2, discharging the slurry into a mud-water separator, and dehydrating the slurry to separate water from dry sludge; s3, discharging the dry mud into a stirring mechanism, adding the grass powder and the organic nutrients into the stirring mechanism, and fully stirring the dry mud, the grass powder and the organic nutrients to form culture soil; s4, discharging the culture soil into a mold, uniformly spraying probiotic liquid, and covering a film for fermentation; s5, packaging the fermented culture soil; and S6, transporting the culture soil to a seedling center for seedling planting. The invention has the following advantages and effects: after the sludge is subjected to dehydration treatment, mixing treatment and fermentation treatment, the sludge becomes culture soil for planting seedlings, so that the sludge is recycled and reused, and the waste of resources is reduced.

Description

Urban inland river sludge treatment and reuse method

Technical Field

The invention relates to the field of river treatment, in particular to a sludge treatment and reutilization method for urban inland rivers.

Background

The ecological river regulation means that in a river land control line, on the basis of meeting the basic functions of a river such as flood control, waterlogging drainage, water diversion and the like, the restoration of a river water ecosystem is promoted through artificial restoration measures, and the healthy, complete and stable river water ecosystem activity is constructed.

The bottom of a traditional urban inland river usually contains a large amount of silt, and the silt at the bottom of the river bed needs to be periodically pumped out for dredging treatment in view of improving the quality of river water. However, most of the sludge is discarded as waste at present, which causes resource waste and needs to be improved.

Disclosure of Invention

The invention aims to provide a sludge treatment and reuse method for urban inland rivers, which has the effect of reducing resource waste.

The technical purpose of the invention is realized by the following technical scheme: a sludge treatment and reuse method for urban inland rivers comprises the following steps:

s1, pumping the sludge into a multi-stage filter box to realize multi-stage filtration of the miscellaneous stones and the impurities and simultaneously form the sludge into slurry;

s2, discharging the slurry into a mud-water separator, and dehydrating the slurry by using the mud-water separator to separate water from dry sludge;

s3, discharging the dry mud into a stirring mechanism, then adding the grass powder and the organic nutrients into the stirring mechanism, and fully stirring the dry mud, the grass powder and the organic nutrients to form culture soil;

s4, discharging the culture soil into a mold, and after uniformly spraying probiotic liquid, fully fermenting the cover film;

s5, packaging the fermented culture soil;

and S6, transporting the culture soil to a seedling center, and culturing the seedlings by using the culture soil.

By adopting the technical scheme, when sludge is treated, the sludge is dewatered, and then the dry sludge is obtained. Then mixing the dry mud, the grass meal and the organic nutrients to prepare the culture soil. And finally, after fermentation treatment is carried out on the culture soil, the culture soil can be used for seedling planting, so that recovery and reutilization of sludge are realized, and resource waste is reduced.

The invention is further provided with: in step S1, the high pressure pump is used to pump out the river water, and then the high pressure river water is used to impact the sludge, so as to filter the sludge.

By adopting the technical scheme, the sludge is impacted by utilizing high-pressure river water, so that the mud is quickly separated from impurities and stones, and the filtering treatment efficiency of the sludge is accelerated. And meanwhile, river water is used for impacting sludge, so that the water resource is repeatedly utilized, and the waste of the water resource is reduced.

The invention is further provided with: the filter box comprises a box body, wherein multiple layers of filter screens are arranged in the box body, and the pore diameters of the multiple layers of filter screens are sequentially reduced from top to bottom; the side wall of the box body is provided with a plurality of strip-shaped slag discharge ports, one end of the filter screen close to the slag discharge ports is bent upwards to form an arc shape, and the bottom walls of the slag discharge ports are communicated with the surface of the filter screen; the outer wall of the box body is provided with a plurality of collecting boxes, the collecting boxes are located below the slag discharge port, a plurality of slag removing mechanisms are arranged in the box body and located above the filter screen, and the slag removing mechanisms are used for pushing sundry stones and impurities on the filter screen to the position of the slag discharge port.

Through adopting above-mentioned technical scheme, when filtering mud, utilize the multilayer filter screen to carry out damming and screening to the miscellaneous stone and the impurity of different specifications size. And then, the accumulated foreign stones and impurities on the filter screen are pushed to the position of the slag discharge port by using the slag removing mechanism, and the foreign stones and the impurities fall into the corresponding collecting boxes along the slag discharge port, so that the independent collection of the foreign stones and the impurities with different specifications and sizes is realized. Therefore, the multi-stage screening of the slurry is realized by arranging the multiple layers of filter screens, and the independent collection of the miscellaneous stones and impurities with different specifications and sizes is realized, so that the resource is recycled and reused in different stages, and the resource waste is reduced.

The invention is further provided with: the slagging-off mechanism includes the pivot that a pair of level set up, and the outer wall of box is provided with and is used for the drive the rotatory motor of pivot, it is a pair of the both ends of pivot all are provided with the band pulley, lie in a pair of with the end all the winding has the hold-in range, it is a pair of the interval is provided with a plurality of clean brushes that are used for contradicting between the hold-in range the up end of filter screen.

Through adopting above-mentioned technical scheme, when needs clear up miscellaneous stone and impurity on the filter screen, it is rotatory to utilize motor drive pivot, and the pivot drives band pulley and hold-in range synchronous motion this moment to the hold-in range drives a plurality of cleaning brushes and moves towards row cinder notch direction. Can utilize a plurality of cleaning brushes to carry the miscellaneous stone and the impurity propelling movement on the filter screen to row cinder notch position this moment, realize the continuous clearance of miscellaneous stone and impurity. Meanwhile, the filter screen can be brushed by the cleaning brush, so that the permeability of the filter screen is ensured, and the filtration treatment efficiency of sludge is improved.

The invention is further provided with: the bottom wall of the collecting box is provided with a plurality of water leakage holes in a penetrating mode, a collecting pool is arranged on the outer wall of the lower end of the box body, and the collecting pool is located under the collecting boxes in a multiple mode.

Through adopting above-mentioned technical scheme, when miscellaneous stone and impurity are collected in the collecting box, the surface of miscellaneous stone and impurity will carry a small amount of sewage, and sewage leaks down along the small opening this moment to finally collect in the collecting tank. Therefore, the dryness of the miscellaneous stones and the impurities in the collecting box can be ensured, and the miscellaneous stones and the impurities with different specifications and sizes can be conveniently recovered.

The invention is further provided with: the stirring mechanism comprises a base and a crusher arranged on the base, a portal frame is arranged on the base, and a weighing platform is arranged below the portal frame; a stirring box is arranged on the weighing platform, a stirring paddle is arranged in the stirring box, and a speed reducer for driving the stirring paddle to rotate is arranged on the portal frame; the feed guide groove is obliquely and downwards arranged at the discharge end of the pulverizer, the lower end of the feed guide groove is positioned above the stirring box, and the portal frame is provided with a grass powder storage box and an organic nutrient storage box.

Through adopting above-mentioned technical scheme, when stirring dry mud, grass powder and organic nourishment, utilize rubbing crusher earlier to smash dry mud, then discharge the dry mud after smashing to the agitator tank in along the baffle box. Meanwhile, the weight of the dry mud in the stirring box is measured by using a weighing platform. Then, the grass powder and the organic nutrients are put into the stirring box one by one, and the grass powder and the organic nutrients are weighed one by one through the weighing platform, so that the quantitative proportioning and the accurate proportioning of the culture soil are realized. And then, fully stirring the dry mud, the grass meal and the organic nutrients by using a stirring paddle to realize the preparation of the culture soil. Consequently, carry out accurate weighing to dry mud, grass powder and organic food through setting up the platform of weighing, then stir the three, realize the accurate preparation of cultivateing soil, guarantee the quality of cultivateing soil.

The invention is further provided with: the stirring paddle comprises a pair of stirring shafts, an installation box is arranged between the pair of stirring shafts, and a stirring rod is arranged on the outer wall of each stirring shaft; a worm is vertically and rotatably connected in the mounting box, and a motor for driving the worm to rotate is arranged on the top wall of the mounting box; a pair of output shafts is horizontally and rotatably connected to the inner wall of the lower end of the mounting box, the output shafts are positioned on two sides of the worm, and worm wheels matched with the worm are arranged on the outer walls of the output shafts; the output shaft is located the outside both ends of install bin all are provided with stirring vane, and stirring vane all upwards rotates.

Through adopting above-mentioned technical scheme, when a pair of (mixing) shaft is rotatory, will drive the install bin and puddler synchronous rotation, utilize the speed reducer to drive the worm rotatory this moment, the worm controls a pair of worm wheel and output shaft rotation simultaneously. When the output shaft is rotatory, will drive the stirring vane synchronous revolution at both ends, can utilize stirring vane to promote the back with the compost of agitator tank below this moment, make it drop again to the agitator tank in. At this moment, the stirring effect on the culture soil can be increased, and the stirring efficiency on the culture soil is improved, so that the culture soil is mixed more uniformly.

The invention is further provided with: one end of the stirring blade, which is far away from the output shaft, is bent towards the rotating direction of the stirring blade.

Through adopting above-mentioned technical scheme, through setting up the stirring vane who buckles, increase stirring vane is to the carrying capacity and the stirring ability of cultivateing soil for cultivateing soil can be promoted fast repeatedly, and then the increase is to the stirring speed and the stirring effect of cultivateing soil.

The invention is further provided with: the stirring device is characterized in that a spiral lifting machine is arranged on the base, a cloth pipe communicated with the lower end of the spiral lifting machine is arranged on the outer wall of the lower end of the stirring box, and a discharge groove located above the stirring box is formed in the upper end of the spiral lifting machine.

Through adopting above-mentioned technical scheme, when stirring the compost, the compost discharges to the screw hoist in along the stringing, utilizes the screw hoist to promote the compost to arrange the material groove position afterwards, with the compost throw into the agitator tank again in, realize the intensive mixing of compost, and then make the more even that the compost mixes.

In conclusion, the invention has the following beneficial effects:

1. after dehydration treatment, mixing treatment and fermentation treatment are carried out on the sludge, the sludge becomes culture soil for planting seedlings, so that the sludge is recycled and reused, and the waste of resources is reduced;

2. the multi-stage screening of the slurry is realized by arranging the multiple layers of filter screens, and the independent collection of the miscellaneous stones and impurities with different specifications and sizes is realized, so that the resource is recycled and reused in different stages, and the resource waste is reduced;

3. the dry mud, the grass meal and the organic nutrients are accurately weighed by arranging the weighing platform, and then the dry mud, the grass meal and the organic nutrients are stirred, so that the accurate preparation of the culture soil is realized, and the quality of the culture soil is ensured;

4. through setting up efficient stirring vane, promote repeatedly the compost of agitator tank below and stir, realize intensive mixing and the high-efficient stirring to the raw materials for raw materials mix more evenly.

Drawings

FIG. 1 is a schematic structural view of a filter box of the embodiment;

FIG. 2 is a schematic view of the internal structure of the case of the embodiment;

FIG. 3 is a schematic structural view of a slag removal mechanism of the embodiment;

FIG. 4 is a schematic structural view of a stirring mechanism of the embodiment;

FIG. 5 is a schematic structural view of a stirring paddle according to an embodiment;

fig. 6 is a schematic view of the internal structure of the installation case of the embodiment.

Reference numerals: 1. a box body; 11. filtering with a screen; 12. a slag discharge port; 13. a collection box; 14. a water leakage hole; 15. a collection tank; 16. a motor; 2. a deslagging mechanism; 21. a rotating shaft; 22. a pulley; 23. a synchronous belt; 24. a cleaning brush; 3. a base; 31. a gantry; 32. a weighing platform; 33. a stirring box; 34. a speed reducer; 35. a grass powder storage box; 36. an organic nutrient storage box; 37. pipe distribution; 4. a pulverizer; 41. a material guide chute; 5. a stirring paddle; 51. a stirring shaft; 52. installing a box; 53. a stirring rod; 54. a worm; 55. a motor; 56. an output shaft; 57. a worm gear; 58. a stirring blade; 6. a screw elevator; 61. a discharge chute.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A sludge treatment and reuse method for urban inland rivers comprises the following steps:

s1, pumping the sludge into a multistage filter box, pumping out river water by using a high-pressure pump, and impacting the sludge by using the high-pressure river water to realize multistage filtration of foreign stones and impurities in the sludge so as to form the sludge into slurry.

And S2, discharging the slurry into a mud-water separator, and dehydrating the slurry by using the mud-water separator to separate water from dry sludge.

And S3, discharging the dry mud into a stirring mechanism, then adding the grass powder and the organic nutrients into the stirring mechanism, and fully stirring the dry mud, the grass powder and the organic nutrients to form culture soil.

S4, discharging the culture soil into the mold, and after uniformly spraying the probiotic liquid, covering the film for full fermentation.

S5, packaging the fermented culture soil.

When the sludge is treated, the sludge is impacted by high-pressure river water, so that the sludge is filtered, and the filtered sludge is mixed with water to form slurry. And then, the mud is dehydrated to obtain the dry mud.

Then mixing the dry mud, the grass meal and the organic nutrients to prepare the culture soil. And finally, after fermentation treatment is carried out on the culture soil, the culture soil can be used for seedling planting, so that recovery and reutilization of sludge are realized, and resource waste is reduced.

As shown in fig. 1 and 2, the filter box comprises a box body 1, wherein a plurality of layers of filter screens 11 are arranged in the box body 1, and the pore diameters of the plurality of layers of filter screens 11 are sequentially reduced from top to bottom.

As shown in fig. 1 and 2, the side wall of the box body 1 is provided with a plurality of elongated slag discharge ports 12, one end of the filter screen 11 close to the slag discharge ports 12 is bent upwards to form an arc shape, and the bottom wall of the slag discharge ports 12 is communicated with the surface of the filter screen 11.

As shown in fig. 1 and 2, a plurality of deslagging mechanisms 2 are arranged in the box body 1, and the deslagging mechanisms 2 are located above the filter screen 11 and used for pushing miscellaneous stones and impurities on the filter screen 11 to the position of the deslagging port 12.

As shown in fig. 1 and 2, the outer wall of the box body 1 is provided with a plurality of collecting boxes 13, and the collecting boxes 13 are positioned below the slag discharge port 12. The bottom wall of the collecting box 13 is provided with a plurality of water leakage holes 14 in a penetrating manner, the outer wall of the lower end of the box body 1 is provided with a collecting tank 15, and the collecting tank 15 is located under the collecting boxes 13.

When mud is filtered, sludge and water are discharged into the box body 1, the multi-layer filter screen 11 is used for filtering mud-water mixture, and miscellaneous stones and impurities with different specifications are intercepted and screened, so that the separation of the miscellaneous stones, the impurities and the mud is realized.

Then, the slag removing mechanism 2 is used for pushing the foreign stones and impurities accumulated on the filter screen 11 to the position of the slag discharging port 12, and the foreign stones and the impurities fall into the corresponding collecting box 13 along the slag discharging port 12, so that the foreign stones and the impurities with different specifications and sizes are collected independently.

And when miscellaneous stone and impurity were collected in collecting box 13, the sewage on miscellaneous stone and impurity surface will leak down along the small opening to finally collect in collecting pit 15, realize the acquireing and the collection of dry miscellaneous stone and impurity, utilize collecting pit 15 to collect sewage simultaneously, avoid causing the secondary pollution of environment.

As shown in fig. 2 and 3, the slag removing mechanism 2 includes a pair of horizontally disposed rotating shafts 21, and the outer wall of the case 1 is provided with a motor 16 (see fig. 1) for driving the rotating shafts 21 to rotate. Both ends of a pair of pivot 21 all are provided with band pulley 22, all twine on a pair of band pulley 22 that is located same end and have hold-in range 23 to the interval is provided with a plurality of cleaning brushes 24 that are used for conflicting filter screen 11 up end between a pair of hold-in range 23.

When the foreign stones and impurities on the filter screen 11 need to be cleaned, the motor 16 is used for driving the rotating shaft 21 to rotate, at the moment, the rotating shaft 21 drives the belt wheel 22 and the synchronous belt 23 to move synchronously, and the synchronous belt 23 drives the cleaning brushes 24 to move towards the direction of the slag discharge port 12.

At this moment, the foreign stones and impurities on the filter screen 11 can be pushed to the position of the slag discharge port 12 by the aid of the cleaning brushes 24, and continuous cleaning of the foreign stones and the impurities is achieved. Meanwhile, the filter screen 11 is brushed, the permeability of the filter screen 11 is guaranteed, and the sludge filtering treatment efficiency is improved.

As shown in fig. 4, the stirring mechanism includes a base 3 and a crusher 4 disposed on the base 3, a gantry 31 is disposed on the base 3, and a weighing platform 32 disposed below the gantry 31 is disposed on the base 3.

As shown in fig. 4, a stirring box 33 is arranged on the weighing platform 32, a stirring paddle 5 is suspended in the stirring box 33, and a speed reducer 34 for driving the stirring paddle 5 to rotate is arranged on the gantry 31.

As shown in FIG. 4, a material guiding chute 41 is obliquely arranged downwards at the discharging end of the pulverizer 4, the lower end of the material guiding chute 41 is positioned above the stirring tank 33, and the gantry 31 is provided with a grass powder storage tank 35 and an organic nutrient storage tank 36.

When the dry mud, the grass powder and the organic nutrients are stirred, the dry mud is firstly crushed by the crusher 4, and then the crushed dry mud is discharged into the stirring box 33 along the material guide groove 41. At the same time, the weight of the dry sludge in the stirring tank 33 is measured by the weighing station 32.

Then, the required amount of the grass powder and the organic nutrients is calculated according to the weight of the dry mud, the grass powder and the organic nutrients are put into the stirring box 33 one by one, and meanwhile, the grass powder and the organic nutrients are weighed one by one through the weighing table 32, so that the quantitative proportioning and the accurate proportioning of the culture soil are realized.

Then, the speed reducer 34 is used for driving the stirring paddle 5 to rotate, and after the stirring paddle 5 is used for fully stirring the dry mud, the grass powder and the organic nutrients, the accurate preparation of the culture soil can be realized.

As shown in fig. 4, the base 3 is provided with a screw elevator 6, the outer wall of the lower end of the stirring tank 33 is provided with a cloth pipe 37 communicating the lower end of the screw elevator 6, and the upper end of the screw elevator 6 is provided with a discharge groove 61 located above the stirring tank 33.

When the culture soil is stirred, the stirred culture soil is discharged into the screw elevator 6 along the distribution pipe 37, then the culture soil is lifted to the position of the discharge groove 61 by the screw elevator 6, and finally the culture soil is put into the stirring box 33 again, so that the culture soil is lifted and fully stirred, and the culture soil is stirred and mixed more uniformly.

As shown in fig. 5 and 6, the stirring paddle 5 includes a pair of stirring shafts 51, a mounting box 52 is disposed between the pair of stirring shafts 51, and a stirring rod 53 is disposed on an outer wall of the stirring shafts 51.

As shown in fig. 5 and 6, a worm 54 is vertically and rotatably connected in the mounting box 52, and a motor 55 for driving the worm 54 to rotate is arranged on the top wall.

As shown in fig. 5 and 6, a pair of output shafts 56 are horizontally and rotatably connected to the inner wall of the lower end of the mounting box 52, the output shafts 56 are located at both sides of the worm 54, and a worm wheel 57 matched with the worm 54 is provided on the outer wall.

As shown in fig. 5 and 6, the two ends of the output shaft 56 outside the mounting box 52 are both provided with stirring blades 58, and the ends of the stirring blades 58 facing away from the output shaft 56 are both bent toward the rotation direction thereof.

When the pair of stirring shafts 51 are rotated, the mounting box 52 and the stirring rod 53 are driven to rotate synchronously, at this time, the worm 54 is driven to rotate by the motor 55, and the worm 54 controls the pair of worm wheels 57 and the output shaft 56 to rotate synchronously.

When the output shaft 56 rotates, the stirring blades 58 at both ends are driven to rotate synchronously, and at this time, the culture soil below the stirring box 33 can be lifted by the stirring blades 58 and then dropped into the stirring box 33 again.

Can realize promoting the stirring repeatedly of culture soil this moment, the increase is to the stirring effect of culture soil, improves the stirring efficiency to culture soil simultaneously for culture soil mixes more evenly.

The specific embodiments are only for explaining the present invention, and the present invention is not limited thereto, and those skilled in the art can make modifications without inventive contribution to the present embodiments as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A sludge treatment and reuse method for urban inland rivers is characterized by comprising the following steps: the method comprises the following steps:

s5, packaging the fermented culture soil;

2. The urban inland river sludge treatment and reuse method according to claim 1, characterized in that: in step S1, the high pressure pump is used to pump out the river water, and then the high pressure river water is used to impact the sludge, so as to filter the sludge.

3. The urban inland river sludge treatment and reuse method according to claim 1, characterized in that: the filter box comprises a box body (1), wherein multiple layers of filter screens (11) are arranged in the box body (1), and the pore diameters of the multiple layers of filter screens (11) are sequentially reduced from top to bottom;

a plurality of strip-shaped slag discharge ports (12) are formed in the side wall of the box body (1), one end, close to the slag discharge ports (12), of the filter screen (11) is bent upwards to form an arc shape, and the bottom wall of each slag discharge port (12) is communicated with the surface of the filter screen (11);

the outer wall of box (1) is provided with a plurality of collecting boxes (13), collecting box (13) are located arrange cinder notch (12) below, and be provided with a plurality of dross removal mechanism (2) in box (1), dross removal mechanism (2) are located the top of filter screen (11), and be used for with miscellaneous stone and impurity propelling movement on filter screen (11) are to arranging cinder notch (12) position department.

4. The urban inland river sludge treatment and reuse method according to claim 3, characterized in that: slag removal mechanism (2) are including pivot (21) that a pair of level set up, and the outer wall of box (1) is provided with and is used for the drive motor (16) that pivot (21) is rotatory, and is a pair of the both ends of pivot (21) all are provided with band pulley (22), lie in a pair of with the one end all twine on band pulley (22) and have hold-in range (23), it is a pair of the interval is provided with a plurality of conflicts between hold-in range (23) the cleaning brush (24) of filter screen (11) up end.

5. The urban inland river sludge treatment and reuse method according to claim 3, characterized in that: the bottom wall of the collection box (13) is provided with a plurality of water leakage holes (14) in a penetrating mode, a collection pool (15) is arranged on the outer wall of the lower end of the box body (1), and the collection pool (15) is located under the collection boxes (13).

6. The urban inland river sludge treatment and reuse method according to claim 1, characterized in that: the stirring mechanism comprises a base (3) and a crusher (4) arranged on the base (3), a portal frame (31) is arranged on the base (3), and a weighing table (32) is arranged below the portal frame (31);

a stirring box (33) is arranged on the weighing platform (32), a stirring paddle (5) is arranged in the stirring box (33), and a speed reducer (34) for driving the stirring paddle (5) to rotate is arranged on the portal frame (31);

a guide chute (41) is obliquely and downwards arranged at the discharge end of the pulverizer (4), the lower end of the guide chute (41) is positioned above the stirring box (33), and a grass powder storage box (35) and an organic nutrient storage box (36) are arranged on the portal frame (31).

7. The urban inland river sludge treatment and reuse method according to claim 6, characterized in that: the stirring paddle (5) comprises a pair of stirring shafts (51), an installation box (52) is arranged between the pair of stirring shafts (51), and a stirring rod (53) is arranged on the outer wall of each stirring shaft (51);

a worm (54) is vertically and rotatably connected in the mounting box (52), and a motor (55) for driving the worm (54) to rotate is arranged on the top wall of the mounting box;

a pair of output shafts (56) is horizontally and rotatably connected to the inner wall of the lower end of the mounting box (52), the output shafts (56) are positioned on two sides of the worm (54), and a worm wheel (57) matched with the worm (54) is arranged on the outer wall of the output shaft;

the two ends of the output shaft (56) positioned outside the mounting box (52) are provided with stirring blades (58), and the stirring blades (58) rotate upwards.

8. The urban inland river sludge treatment and reuse method according to claim 7, characterized in that: the end of the mixing blade (58) facing away from the output shaft (56) is bent in the direction of rotation thereof.

9. The urban inland river sludge treatment and reuse method according to claim 6, characterized in that: be provided with spiral elevator (6) on base (3), the lower extreme outer wall of agitator tank (33) is provided with the intercommunication cloth pipe (37) of spiral elevator (6) lower extreme, and the upper end of spiral elevator (6) is provided with and is located discharge chute (61) of agitator tank (33) top.