CN110746084A - Intelligent feedback type sludge concentration system and treatment method thereof - Google Patents

Abstract

The invention relates to an intelligent feedback type sludge concentration system and a treatment method thereof, which are characterized in that: three cauldron series connection grading treatment system of formation are established ties by three concentrated cauldron, concentrated cauldron comprises the cauldron body and mixing system, the cauldron body is double-deck drum structure, outer barrel is by the roof, curb plate and bottom plate are constituteed, the inlayer barrel comprises side filter plate and lower filter plate, be equipped with mud feed inlet and medicament entry on the roof, online automatic checkout device is installed on curb plate upper portion, the lower part is equipped with liquid outlet and mud discharge gate, the air pump is installed to the mud discharge gate, side filter plate inner wall is equipped with the heliciform sand grip, lower filter plate is the bellied curved plate in center, annular support plate and triangle-shaped support frame are installed to the downside of lower filter plate, mixing system is including installing agitator motor on the roof, be located the axis of rotation of cauldron body axle center department. The invention can effectively reduce the water content of the concentrated sludge and has the advantages of low operation cost, good concentration effect, high concentration efficiency and the like.

Description

Intelligent feedback type sludge concentration system and treatment method thereof

Technical Field

The application belongs to the technical field of environmental protection, and particularly relates to an intelligent feedback type sludge concentration system and a treatment method thereof.

Background

Sludge is a product after sewage treatment, generally contains harmful chemical substances, heavy metals and the like, and easily causes secondary pollution to the environment if the sludge is not properly treated. The water content of the sludge is high, the sludge has a large volume, and further concentration treatment is usually required for facilitating subsequent treatment and transportation.

The prior art has also proposed corresponding treatment scheme to the concentration of mud, for example, application publication date is 2018 5 month 11 days, in the chinese patent that application publication number is CN108017253A, a sludge thickening device is disclosed, this sludge thickening device includes the concentrated jar of body, agitating unit and row mud device, the upper end of the concentrated jar of body is equipped with mud import and cowl, the lower part is equipped with row mud mouth, agitating unit includes agitator motor, (mixing) shaft and stirring vane, row mud device includes row mud motor, row mud motor shaft and screw axis leaf, this scheme can solve a mud mouth jam problem and realize certain sludge concentration effect, but there are the running cost height, concentration effect is poor, concentration inefficiency scheduling problem.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides an intelligent feedback type sludge concentration system and a treatment method thereof, wherein the intelligent feedback type sludge concentration system is reasonable in structural design, low in operation cost, good in concentration effect and high in concentration efficiency.

The technical scheme adopted by the invention for solving the problems is as follows: this intelligence repayment type sludge concentration system comprises a concentrated cauldron, No. two concentrated kettles and No. three concentrated kettles of series connection, its characterized in that: the feeding port of the first concentration kettle is connected with a feeding pipeline, the first concentration kettle is used for receiving and treating sludge with the water content of 98% or more, the feeding port of the second concentration kettle is connected with the discharging port of the first concentration kettle, the second concentration kettle is used for receiving and treating sludge with the water content of 95% -98%, the feeding port of the third concentration kettle is connected with the discharging port of the second concentration kettle, the third concentration kettle is used for receiving and treating sludge with the water content of 92% -95%, the concentration kettle comprises a kettle body and a stirring system, the kettle body is of a double-layer structure, an outer-layer cylinder body is composed of a top plate, side plates and a bottom plate, the top plate forms a dome structure, a circular through hole is formed in the center of the top plate, the upper portion of each side plate is connected with the top plate through a necking, and an inner-layer cylinder; stirring system includes agitator motor, axis of rotation and stirring rake, agitator motor installs the roof top at the cauldron body through the mount pad handstand, the upper end of axis of rotation links to each other with agitator motor, is in the inside axis position of the cauldron body behind the through-hole on the roof is passed to the axis of rotation, the stirring rake is installed in the axis of rotation, and the during operation is rotatory along clockwise, and this stirring rake is double-deck turbine structure, and its upper paddle is the bent leaf, and lower floor's paddle is the flap, the bent leaf is crooked along clockwise, and the quantity of bent leaf is 4, the upper left side slope is turned to the flap, and the quantity of flap also is 4. The three-kettle series connection grading receiving system is formed, sludge in a certain water content range is respectively treated, the production efficiency can be effectively improved, a better concentration effect is achieved, the volume of the sludge is greatly reduced, subsequent treatment is facilitated, the double-layer cylinder structure of the kettle body can separate the sludge from filtrate in the stirring process, the standing time is saved, the treatment efficiency is improved, the top plate can be movably mounted on the side plate through the necking design at the joint of the side plate and the top plate, the detachment of the top plate and the subsequent cleaning of the inner part of the cylinder are facilitated, the stirring system is used for promoting the sludge to be mixed with a concentrated medicament, the reaction process is accelerated, the concentration time is shortened, the stirring effect of the double-layer turbine stirring paddle is remarkable, the upper bent blade stirring paddle can generate a good radial mixing effect, the lower folded blade stirring paddle can promote material sedimentation, the axial mixing effect is enhanced, and the sludge is prevented from being deposited at the lower filter, And (4) scaling.

Preferably, the curved surface of the top plate is provided with 1 feeding hole and at least 3 medicament inlets are uniformly distributed on the circumference, and the tail ends of the inlets of the medicament inlets are provided with fan-shaped nozzles. Set up a plurality of medicament inlets and let in the medicament simultaneously, can make the flow dispersion when the medicament throws into, fan-shaped nozzle can form the great fan-shaped spraying region of area, and the spraying distributes evenly, and the liquid drop size is medium to the surface area of increase medicament and mud contact makes the mixture more even, avoids making secondary concentrated sludge appear the particle diameter too big because of local medicament concentration, the problem such as conglomeration.

Preferably, the filter screen is arranged inside the nozzle of the feeding pipeline, and the mesh number of the filter screen is 4-50 meshes. The pipe orifice of the feeding pipeline is provided with a filter screen for removing large hard objects and impurities in the raw materials, and the abrasion of the side filter plate, the lower filter plate, the stirring paddle and the like in the concentration kettle by the hard objects is prevented.

Preferably, an on-line automatic detection device is mounted on the outer side of the upper portion of the side plate, and the on-line automatic detection device takes the sludge water content as a target value. The online automatic detection device automatically feeds the qualified moisture content instruction back to the center system, the center system sends the instruction of stopping the stirring motor and discharging after receiving the feedback information, and automatic discharging is realized, so that the labor cost is effectively reduced, the labor intensity is reduced, and the production efficiency is improved.

Preferably, two sides of the bottom of the side plate are respectively provided with 1 discharge hole and a liquid outlet, and an air pump is vertically arranged at the position of a pipe orifice of the discharge hole. The mud moisture content behind the concentration step-down, mobility variation, it is inefficient to go out mud, and the air pump can play the suction effect, improves out mud efficiency, enables the concentration cauldron moreover and is in the little negative pressure environment, improves the dewatering effect of mud.

Preferably, the side filter plates and the lower filter plate are of a double-layer filter plate structure, and a layer of reticular filter cloth is arranged between the two layers of filter plates. The side filter plates and the lower filter plate are used for separating secondary sludge after concentration reaction from precipitated liquid, and the filtering effect of the double-layer filter plate and the reticular filter cloth is remarkable.

Preferably, the inner surface of the side filter plate of the invention is provided with spiral convex strips, the two side edges of the convex strips are arc-shaped, the top part of the convex strips is a plane, the convex strips form 3 circles of spiral which rotates anticlockwise around the inner surface of the side filter plate from bottom to top, and the lower filter plate is a curved plate with the center part protruding upwards. The spiral direction of the heliciform sand grip of side filter plate internal surface is opposite with the direction of rotation of stirring rake, can strengthen the disturbance nature to the material when stirring, improves the material and mixes the effect, and the curved surface structure of lower filter plate central point epirelief enables sunken material to diffusion all around under the action of gravity, has both promoted and has mixed the effect, can prevent solid matter deposit, scale deposit at lower filter plate central point again.

Preferably, 3 circles of annular supporting plates are arranged between the bottom plate and the lower filter plate, 2 through grooves are formed in the bottom of each supporting plate, and at least 4 triangular supporting frames are uniformly distributed on the circumference of the lower side of the joint of the lower filter plate and the side plate. The lower filter plate needs to bear larger weight during working, the bearing capacity of the lower filter plate is improved by arranging 3 circles of annular support plates and at least 4 triangular support frames, the lower filter plate is prevented from collapsing, and separated liquid can freely flow between the bottom plate and the lower filter plate through the through grooves in the bottom of the annular support plates.

A treatment method of an intelligent feedback type sludge concentration system is characterized in that: firstly, sludge is filtered by a filter screen from a feeding pipeline, large hard objects mixed in the sludge are removed, the sludge is conveyed into a first concentration kettle, and meanwhile, a concentrated medicament A is simultaneously introduced into the first concentration kettle from a plurality of medicament inlets to form spray under the action of a fan-shaped nozzle and is mixed with the sludge; after the feeding is finished, starting a stirring motor to enable a stirring paddle to uniformly stir the sludge and the medicament and fully perform concentration reaction, filtering and separating liquid separated out from the sludge by using a side filter plate and a lower filter plate in the rotation process of the stirring paddle, storing the liquid between a bottom plate and the lower filter plate, and detecting the water content of the sludge in real time by using an online automatic detection device; and after the water content of the sludge reaches a preset value, the online automatic detection device sends feedback to the central control system, automatically closes the stirring motor, opens the discharge hole and the liquid outlet, starts the air pump, discharges the filtered liquid from the liquid outlet, sequentially transfers the sludge into a second concentration kettle and a third concentration kettle, and repeats the processes.

Compared with the prior art, the invention has the following advantages and effects:

(1) the mixing is more uniform. According to the invention, a plurality of medicament inlets are adopted for feeding simultaneously, the medicament inlets are uniformly distributed on the top plate, the nozzles are arranged at the tail ends of the inlets, so that the medicaments can be uniformly dispersed and can be more fully mixed with sludge, spiral raised lines are arranged on the inner surface of the side filter plate to enhance the disturbance during stirring, the upper layer of the stirring paddle is the bent blade turbine, and the lower layer of the stirring paddle is the folded blade turbine, so that good radial and axial mixing effects can be realized, sludge can be prevented from being deposited at the bottom and attached to the wall surface, and the problems of caking and the like caused by overlarge local medicament.

(2) The operation cost is low. The automatic discharging control device realizes the automatic discharging control of the equipment by utilizing the online automatic detection device, can greatly reduce the labor intensity of workers and reduce the labor cost.

(3) The concentration effect is good, and the production efficiency is high. The invention respectively processes the sludge with a certain water content range by forming the three-kettle serial graded receiving and processing system, can effectively reduce the water content of the sludge, reduce the volume of the sludge, has good concentration effect and obviously improves the production efficiency.

Drawings

In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic illustration of an installation of an embodiment of the present invention.

FIG. 2 is a schematic diagram of a semi-sectional structure of a concentrating tank according to an embodiment of the present invention.

FIG. 3 is a schematic view of a top view of the autoclave body according to an embodiment of the present invention.

Fig. 4 is a schematic view of a half-section structure of the side filter plate according to the embodiment of the invention.

Fig. 5 is a schematic perspective view of the lower filter plate and the support plate according to the embodiment of the present invention.

Fig. 6 is a front view of the lower filter plate and the support plate according to the embodiment of the present invention.

Fig. 7 is a schematic perspective view of a stirring paddle according to an embodiment of the present invention.

Description of reference numerals: 1. a first concentration kettle; 2. a second concentration kettle; 3. a third concentration kettle; 4. a kettle body; 5. a stirring system; 6. a top plate; 7. a side plate; 8. a base plate; 9. a side filter plate; 10. a lower filter plate; 11. a stirring motor; 12. a rotating shaft; 13. a stirring paddle; 14. a feed inlet; 15. a feed conduit; 16. filtering with a screen; 17. a medicament inlet; 18. a nozzle; 19. a discharge port; 20. an air pump; 21. a liquid outlet; 22. a support plate; 23. a support frame; 24. necking; 25. a mounting seat; 26. a convex strip; 27. a through groove; 28. bending leaves; 29. folding; 30. a through hole; 31. an on-line automatic detection device.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.

Examples are given.

Referring to fig. 1 to 7, the intelligent feedback type sludge concentration system in this embodiment is composed of a first concentration tank 1, a second concentration tank 2, and a third concentration tank 3 connected in series, wherein a feed inlet 14 of the first concentration tank 1 is connected to a feed pipe 15, a filter screen 16 is disposed inside a pipe orifice of the feed pipe 15, the mesh number of the filter screen 16 is 4-50, the filter screen 16 is used for removing large hard objects and impurities in raw materials and preventing a side filter plate 9, a lower filter plate 10, a stirring paddle 13 and the like inside the concentration tanks from being worn by the hard objects, the first concentration tank 1 is used for receiving and processing sludge with a water content of 98% or more, a feed inlet 14 of the second concentration tank 2 is connected to a discharge outlet 19 of the first concentration tank 1, the second concentration tank 2 is used for receiving and processing sludge with a water content of 95% -98%, the feed inlet 14 of the third concentration tank 3 is connected to a discharge outlet 19 of the second concentration tank 2, the third concentrating kettle 3 is used for receiving and processing the sludge with the water content of 92% -95%, the three kettles form a three-kettle series connection grading receiving system, the sludge in different water content ranges is respectively processed, the production efficiency can be effectively improved, a better concentrating effect is achieved, the volume of the sludge is greatly reduced, and the subsequent processing is facilitated.

The sludge concentration kettle in the embodiment comprises a kettle body 4 and a stirring system 5, wherein the kettle body 4 is cylindrical and comprises a top plate 6, a side plate 7, a bottom plate 8, a side filter plate 9 and a lower filter plate 10, wherein the top plate 6, the side plate 7 and the bottom plate 8 form an outer-layer cylinder of the kettle body 4, the outer-layer cylinder is made of stainless steel materials and mainly plays a role in protecting and containing filtered liquid, the sludge concentration kettle has better corrosion resistance and stability, the top of the side plate 7 is connected with the top plate 6 through a reducing opening 24, the reducing opening 24 enables the top plate 6 to be directly sleeved on the side plate 7 and limits the circumferential translation of the top plate 6, the side filter plate 9 and the lower filter plate 10 form an inner-layer cylinder of the kettle body 4, the side filter plate 9 and the lower filter plate 10 are of double-layer filter plate structures, a layer of reticular filter cloth is arranged between the two layers of filter plates and can separate sludge from liquid separated after concentration reaction, and 3 circles, this spiral direction of sand grip 26 is anticlockwise upwards, the top of sand grip 26 is the plane, both sides are the arc limit, the existence of sand grip 26 makes the lateral wall of inlayer barrel demonstrate certain concave-convex change, inside asymmetry has been increased, can strengthen the perturbance to the material, improve the mixed effect of mud and medicament, lower filter plate 10 is the bellied curved plate of central part, enable sunken material to diffuse around along the face under the action of gravity, the mobility of both promotion material, can prevent solid matter under the deposit of filter plate central part again, the scale deposit.

Be provided with 3 rings of annular backup pads 22 between lower filter plate 10 and the bottom plate 8 of this embodiment, this annular backup pad 22's both ends and bottom plate 8 and lower filter plate 10 top jail, evenly distributed has 4 triangle-shaped support frames 23 on the downside circumference of lower filter plate 10 and curb plate 7 junction, because concentrated cauldron during operation, the material stirs in the inner tube body, lower filter plate 10 need play main supporting role, it can effectively prevent down that filter plate 10 from taking place to cave to set up backup pad 22 and support frame 23, the life of extension concentrated cauldron, the logical groove 27 of backup pad 22 bottom is used for supplying the concentrated back liquid free flow who crosses to filter out, make liquid finally can both follow liquid outlet 15 and pour out.

The stirring system of the present embodiment includes a stirring motor 11, a rotating shaft 12, and a stirring paddle 13, wherein, the stirring motor 11 is arranged upside down above the top plate 6 through a cylindrical ladder-shaped mounting seat 25, after the top end of the rotating shaft 12 is connected with the stirring motor 11, the stirring paddle 13 passes through the through hole 30 on the top plate 6 and then falls on the inner axis position of the kettle body 4, the stirring paddle 13 is arranged on the rotating shaft 12 and rotates clockwise when in work, the stirring paddle 13 is of a double-layer turbine structure, the upper layer of blades are bent blades 28, the lower layer of blades are folded blades 28, the number of the bent blades 28 is 4, the blades are bent along the clockwise direction, can generate clockwise vortex when rotating, forms good radial mixing effect, has 4 flaps 29 and inclines towards the upper left, when rotating, the vortex generator can generate axial and radial vortex, can promote the material to settle, and enhances the axial mixing effect.

The sludge raw material of this embodiment is introduced into the first thickening tank 1 through the sludge feed inlet 14 on the top plate 6 from the feed pipe 15, the thickening agent a enters from the 3 agent inlets 17 uniformly distributed on the top plate 6, and the inlet end of the agent inlet 17 is provided with the fan-shaped nozzle 18. The fan-shaped nozzle 18 can form a fan-shaped spraying area with a large area, the spraying distribution is uniform, the size of liquid drops is medium, the contact surface area of the medicament and the sludge can be increased, and the phenomena of sludge agglomeration and the like caused by overlarge concentration of the local medicament are avoided; after the feeding is finished, the stirring motor 11 is started, the stirring paddle 13 stirs the materials, so that the sludge and the concentrated reagent are fully mixed and react, the separated liquid is stored between the bottom plate 8 and the lower filter plate 10 under the filtering action of the side filter plate 9 and the lower filter plate 10, and the water content of the sludge is detected in real time by using the online automatic detection device 31; after the mud moisture content reaches the default, online automatic checkout device 31 sends the feedback to central control system, self-closing agitator motor 11 and open discharge gate 19 and the liquid outlet 21 that is located curb plate 7 lower part both sides, and start the air pump 20 that is located discharge gate 19 department, because mud moisture content step-down after the concentration, the mobility variation, it is inefficient to go out the mud, air pump 20 can play the suction effect, improve a mud efficiency, and enable the concentrator kettle in the little negative pressure environment, improve the dewatering effect of mud, mud after the concentration passes through discharge gate 19 and carries in proper order to No. two concentrator kettles 2 and No. three concentrator kettles 3, repeat above-mentioned process, finally obtain the lower mud of moisture content.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (9)

1. The utility model provides an intelligence repayment type sludge thickening system comprises a concentrated cauldron (1), No. two concentrated cauldron (2) and No. three concentrated cauldron (3) of series connection, its characterized in that: the sludge treatment device is characterized in that a feed inlet (14) of a first concentration kettle (1) is connected with a feed pipeline (15), the first concentration kettle (1) is used for receiving and treating sludge with the water content of 98% or more, a feed inlet (14) of a second concentration kettle (2) is connected with a discharge outlet (19) of the first concentration kettle (1), the second concentration kettle (2) is used for receiving and treating sludge with the water content of 95% -98%, a feed inlet (14) of a third concentration kettle (3) is connected with a discharge outlet (19) of the second concentration kettle (2), the third concentration kettle (3) is used for receiving and treating sludge with the water content of 92% -95%, the concentration kettle comprises a kettle body (4) and a stirring system (5), the kettle body (5) is of a double-layer structure, an outer-layer cylinder body of the kettle body is composed of a top plate (6), a side plate (7) and a bottom plate (8), the top plate (6) forms a dome structure, a circular through hole (30) is arranged in the, the upper part of the side plate (7) is connected with the top plate (6) through a necking (24), and the inner-layer cylinder body consists of a side filter plate (9) and a lower filter plate (10); stirring system (5) include agitator motor (11), axis of rotation (12) and stirring rake (13), roof (6) top at the cauldron body (4) are installed through mount pad (25) handstand in agitator motor (11), the upper end and agitator motor (11) of axis of rotation (12) link to each other, and axis of rotation (12) pass through-hole (30) on roof (6) the back and are in the inside axis position of the cauldron body (4), install on axis of rotation (12) stirring rake (13), and the during operation is rotatory along clockwise, and this stirring rake (13) are double-deck turbine structure, and its upper paddle is bent leaf (28), and lower floor's paddle is flap (29), bent leaf (28) are along clockwise bending, and the quantity of bent leaf (28) is 4, flap (29) are towards the upper left side slope, and the quantity of flap (29) also is 4.

2. The intelligent feedback sludge concentration system of claim 1, wherein: be equipped with 1 feed inlet (14) and circumference evenly distributed on the curved surface of roof (6) and have 3 at least medicament entries (17), fan-shaped nozzle (18) are installed to the entry end of medicament entry (17).

3. The intelligent feedback sludge concentration system of claim 1, wherein: a filter screen (16) is arranged inside the pipe orifice of the feeding pipeline (15), and the mesh number of the filter screen (16) is 4-50 meshes.

4. The intelligent feedback sludge concentration system of claim 1, wherein: and an online automatic detection device (31) is installed on the outer side of the upper part of the side plate (7), and the online automatic detection device (31) takes the sludge water content as a target value.

5. The intelligent feedback sludge concentration system of claim 1, wherein: the bottom both sides of curb plate (7) are equipped with 1 discharge gate (19) and liquid outlet (21) respectively, air pump (20) are vertically installed to the mouth of pipe position of discharge gate (19).

6. The intelligent feedback sludge concentration system of claim 1, wherein: the side filter plates (9) and the lower filter plates (10) are of double-layer filter plate structures, and a layer of reticular filter cloth is arranged between the two layers of filter plates.

7. The intelligent feedback sludge concentration system of claim 1, wherein: the internal surface of side filter plate (9) is equipped with heliciform sand grip (26), the both sides limit of sand grip (26) is the arc, and the top is the plane, sand grip (26) form 3 rings of anticlockwise rotation's spiral from bottom to top around the internal surface of side filter plate (9), lower filter plate (10) are the bellied curved plate that makes progress of central point.

8. The intelligent feedback sludge concentration system of claim 1, wherein: the filter plate is characterized in that 3 rings of annular supporting plates (22) are arranged between the bottom plate (8) and the lower filter plate (10), 2 through grooves (27) are formed in the bottom of each supporting plate (22), and at least 4 triangular supporting frames (23) are uniformly distributed on the circumference of the lower side of the joint of the lower filter plate (10) and the side plate (7).

9. The method for processing the intelligent feedback sludge concentration system as claimed in any one of claims 1 to 8, wherein: firstly, sludge is filtered by a filter screen (16) from a feeding pipeline (15), large hard substances mixed in the sludge are removed, then the sludge is conveyed into a first concentration kettle (1), and meanwhile, a concentrated medicament A is simultaneously introduced into the first concentration kettle (1) from a plurality of medicament inlets (17) to form spray under the action of a fan-shaped nozzle (18) and is mixed with the sludge; after feeding is finished, starting a stirring motor (11) to enable a stirring paddle (13) to uniformly stir the sludge and the medicament and fully perform concentration reaction, filtering and separating liquid separated out from the sludge by a side filter plate (9) and a lower filter plate (10) in the rotation process of the stirring paddle (13), storing the liquid between a bottom plate (8) and the lower filter plate (10), and detecting the water content of the sludge in real time by using an online automatic detection device (31); after the water content of the sludge reaches a preset value, the online automatic detection device (31) sends feedback to the central control system, automatically closes the stirring motor (11), opens the discharge hole (19) and the liquid outlet (21), starts the air pump (20), discharges the filtered liquid from the liquid outlet (23), sequentially transfers the sludge into the second concentration kettle (2) and the third concentration kettle (3), and repeats the process.

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