CN204569520U - A kind of flocculating settling equipment - Google Patents

Abstract

The utility model discloses a flocculation settling device, which mainly relates to the field of sewage treatment devices. Including coagulation tank, flocculation tank and settling tank, the coagulation tank, flocculation tank and settling tank are connected in sequence according to the process flow from front to back, the coagulation tank is a closed tank, and includes the upper water area of the inner layer and the outer layer In the mixing area, a coagulation agitator is set at the lower end of the upper water area; a water distribution pipe is set at the top of the flocculation tank, and a flocculation stirring device is installed in the flocculation tank; it also includes a slow flow channel, and a partition with a channel at the top is set in the slow flow channel; There is a mud bucket at the bottom of the tank, a sloping plate at the middle and upper part of the settling tank, multiple drainage grooves at the top of the settling tank, and a water collection tank on the outer wall of the settling tank. The beneficial effect of the utility model lies in that: the stirring in the coagulation stage is intense and rapid, so that the flocculant and the particle can effectively collide;

Description

A flocculation settling equipment

technical field

The utility model relates to the field of sewage treatment devices, in particular to flocculation and sedimentation equipment.

Background technique

Sewage treatment refers to the process of purifying sewage to meet the water quality requirements of a certain water body for drainage or reuse. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields, and is closely related to sustainable economic development, environmental quality and people's lives.

Sewage treatment is generally divided into three levels: primary treatment, which uses physical treatment to remove insoluble pollutants and parasite eggs in sewage; secondary treatment, which uses biological treatment to oxidize and degrade various complex organic substances in sewage into Simple substances; tertiary treatment, the application of chemical precipitation, biochemical, physical and chemical methods, etc., to remove phosphorus, nitrogen, refractory organic matter, inorganic salts, etc. in sewage. In the above three-stage treatment process, the corresponding flocculation and sedimentation device is required. Furthermore, the flocculation and sedimentation device is the reaction zone and purification zone of sewage treatment, and is the core of the entire sewage treatment system.

The main process of the flocculation and sedimentation process is generally, after the flocculant is selected and added according to the sewage situation, the colloids and dispersed particles in the water form flocs under the interaction of molecular forces and collide and coagulate with each other during the sedimentation process. When the floc grows to a certain volume, it will separate from the water phase and precipitate under the action of gravity, thereby removing a large amount of suspended solids in the wastewater, thereby achieving the effect of purification.

During the reaction process of flocculation and sedimentation, the stirring treatment of water body is very important. The process of flocculation and sedimentation is mainly divided into three main processes: mixing, flocculation and sedimentation. The purpose of mixing is to coagulate and destabilize the colloidal particles. During the mixing process, the active ingredients of the coagulant must be quickly and evenly contacted with the colloidal particles in the water to produce coagulation, so the mixing process requires strong, fast and short time. It is possible to evenly disperse the coagulant into the raw water in a short period of time, so the water flow is required to generate intense turbulence. The purpose of coagulation is to effectively collide between fine particles, thereby gradually growing into large particles, and finally achieve gravity settlement to achieve solid-liquid separation, which requires soft and uniform turbulence of water flow. The purpose of sedimentation is to make the flocs gradually settle down from the water, and finally complete the solid-liquid separation to realize water purification.

The flocculation and sedimentation device of the prior art is not perfect in the control of the water flow in the mixing and flocculation stages, and is still in the stage of exploration and optimization.

In the mixing stage, because the sewage treatment pressure is often high, the flow rate is fast, and the stirring pressure in the tank is relatively high, it is difficult to achieve vigorous stirring and full mixing in the traditional open coagulation tank, which makes the utilization of the coagulant limited. Affect the flocculation effect of water body.

In the flocculation stage, in order to ensure the processing capacity, the flocculation tank is generally larger and deeper, which brings difficulties to the up and down turning and mixing of the water body. The flocculation tank of the prior art may use a larger frame agitator, although The mixing is good, but the high shear force is not conducive to the formation of flocs, and the up and down mixing is poor, the stirring is not sufficient, or the agitator with the axial stirring blade on the head is used, although the up and down agitation of the water flow has been improved, but the agitation The range of influence is small, the stirring is uneven, and the flocs near the blades are easily broken if the rotating speed is fast. If the rotating speed is low, the stirring effect will be poor, which will affect the treatment effect.

In addition to the above problems, the settling tanks of the existing flocculation and settling devices are mostly open open-air tanks. At this stage of water treatment, the flocs have been formed and are in the gravity sedimentation stage. However, the open-air devices expose a large area of the water body to the external environment. In the water, it is inevitable to fall into fluff, fallen leaves, dust, etc. and cause new pollution, which greatly affects the quality of water treatment. However, existing devices have not yet provided a solution to this problem.

Utility model content

The purpose of this utility model is to provide a kind of flocculation and sedimentation equipment, which stirs violently and quickly in the coagulation stage, so that the flocculant and the particles can effectively collide, and the mixing effect is good. , The flocculation effect is good, and a slow flow stage is added at the front end of the settlement, so that the flocculation reaction is sufficient, the settlement efficiency is high, and the effect is good, which effectively improves the quality of water treatment.

The utility model realizes above-mentioned purpose by following technical scheme:

A flocculation settling equipment, including a coagulation tank, a flocculation tank and a settling tank, the coagulation tank, the flocculation tank and the settling tank are connected in sequence according to the process flow from front to back, and the rear end of the settling tank is provided with a water main pipe , the front end of the coagulation tank is provided with a raw water main pipe, and the raw water main pipe is also provided with a Y-shaped filter and a gate valve, and also includes a dosing pipeline, and the dosing pipeline is communicated with the raw water main pipe through a gate valve,

The coagulation tank is a closed tank and includes an upper water area of the inner layer and a mixing area of the outer layer. The mixing area is connected with the raw water main pipe, and the top wall of the upper water area is provided with a The pipeline is connected, and the pipeline is provided with a water pump and a gate valve. The side wall of the upper water area is a trumpet structure with the narrow end facing down. The lower end of the upper water area is provided with an opening that communicates with the mixing area. A coagulation agitator is arranged in the opening, and the coagulation agitator is an open-type worm gear agitator with inclined blades;

The top of the flocculation tank is provided with a water distribution pipe, the water inlet end of the water distribution pipe is connected to the pipeline, the water outlet end of the water distribution pipe points to the flocculation tank, and a flocculation stirring device is arranged in the flocculation tank, and the flocculation stirring device It includes a stirring shaft, a downward pressing paddle and an upward turning blade. The stirring shaft is located in the center of the flocculation tank and rotates clockwise. , the downward-pressing paddle is a counterclockwise inclined hinge and is located on the upper part of the stirring shaft, and the upward turning blade is a clockwise inclined hinge and is located on the lower part of the stirring shaft;

It also includes a slow flow channel, the slow flow channel is sandwiched between the flocculation tank and the sedimentation tank, and the bottom end of one side is connected with the bottom end of the flocculation tank, and the bottom end of the other side is provided with a water distribution mesh and It communicates with the sedimentation tank through the water distribution mesh, and a partition plate with a channel at the top is set in the slow flow channel;

The water distribution mesh is located in the middle of the settling tank wall, the bottom of the settling tank is provided with a mud bucket, the middle and upper part of the settling tank is provided with a sloping plate, and the top of the settling tank is provided with a plurality of drainage grooves. The outer wall of the settling tank is also provided with a sump, one end of the drainage tank passes through the wall of the settling tank and communicates with the sump, and the outlet main pipe communicates with the sump.

The end of the water outlet main pipe connected to the water collection tank is provided with a water collection filter pipe, the water collection filter pipe is provided with filtering pores, and the water outlet main pipe is provided with a gate valve and a water pump.

The water distribution pipe includes a main pipe and branch pipes. There are multiple branch pipes and one end of the branch pipes is connected to the main pipe. The branch pipes are evenly distributed around the main pipe.

The tops of the coagulation tank and the flocculation tank are equipped with stirring motors.

The rotational speed of the coagulation agitator is 100-200 r/min.

The rotational speed of the flocculation stirring device is 50-100 r/min.

Compared with the prior art, the beneficial effects of the utility model are:

1. The coagulation tank is used instead of the traditional coagulation tank. Since the coagulation tank is a sealed tank, and the internal partition layout: the mixing zone is on the periphery and connected to the raw water main pipe, the raw water added with flocculant enters the mixing zone for preliminary mixing and preparation, and the coagulation agitator operates at high speed, On the one hand, the slanted-blade open-type worm wheel stirring method has low resistance and is conducive to high-speed rotation. On the other hand, the high-speed stirring blades can make the water body form an upward and intense vortex, driving the water body in the mixing area to go up and enter the upper water area from the opening. Through the above structure and operation, the fine particles and flocculant in the raw water entering the upper water area are fully mixed and violently collided, which not only ensures the uniform mixing of the raw water and the coagulant, but also the process is fast, short-term and intense. Satisfies the technical requirements of coagulation and is conducive to the next step of flocculation reaction.

2. The arrangement of the water distribution pipe can uniformly inject water into the flocculation tank, which is beneficial to the subsequent dispersion and mixing, and avoids the concentration of homogeneous water bodies.

3. The setting of the flocculation and stirring device has the following advantages:

The blades are all 3 pieces, which is conducive to the stirring operation with moderate strength;

The down-pressing paddle is on the upper part and is inclined counterclockwise, combined with the clockwise rotation of the stirring shaft, the water body can be involved and pressed down, so that the upper part of the water body rolls toward the axis and downward; the up-turning paddle is in the The lower part is inclined clockwise, combined with the clockwise rotation of the stirring shaft, the water body can be drawn in and raised, so that the water body in the lower part can roll up towards the axis; The water body realizes the convective rolling from the four corners to the center, which makes the water body under the flocculation reaction roll up and down well, and the mixing is sufficient and soft, which is conducive to the flocculation reaction.

4. The setting of the slow flow channel, on the one hand, allows sufficient reaction time for the flocculation reaction to ensure the full flocculation and combination of particles, and on the other hand, it can make the messy and mixed flow of water flow and comb through the channel, so as to consume too much The potential energy and kinetic energy of the water make the water flow stable, which is conducive to the next step of settlement.

5. The setting of the water distribution mesh is used to further disperse the water flow and buffer the impulse force, so that the water flow can be injected into the settlement tank softly and finely, so as to avoid disturbing the calm water body in the settlement tank and ensure the continuous and efficient settlement.

6. The sedimentation tank enters water from the middle, which is beneficial to the role of the inclined plate and the collection of impurities by the mud bucket. The setting of the sloping plate shortens the settling distance, increases the coalescence area, improves the processing capacity and separation efficiency, and reduces the mutual disturbance of water bodies, which is beneficial to the deposition and coalescence of flocs. Impurities and impurities precipitated in the water fall along the inclined plate into the mud hopper below, which is convenient for centralized cleaning and collection.

7. The setting of the water collection filter pipe solves the problem of new pollution sources in the final stage of flocculation and settlement, and physically filters out suspended matter such as flocs, fallen leaves, and dust that may fall due to open-air operation through the added filter micropores, and further Guarantee the quality of water treatment.

8. The water distribution pipe adopts a divergent layout, the plane water distribution effect is good, and the water outlet is evenly dispersed.

9. The setting of the stirring motor provides electric drive for the coagulation stirrer and the flocculation stirring device.

10. The rotation speed of the coagulation agitator is 100-200r/min, with powerful stirring, good upward effect, and sufficient turbulent mixing.

11. The rotating speed of the flocculation stirring device is 50-100r/min, and the stirring is gentle and sufficient, so as to ensure the integrity and coagulation of the flocs.

Description of drawings

Accompanying drawing 1 is the schematic diagram of the utility model.

Accompanying drawing 2 is the schematic diagram of the flocculation stirring device of the present utility model.

Accompanying drawing 3 is the plane view of the water distribution pipe of the present utility model.

Labels shown in the accompanying drawings:

1. Coagulation tank; 2. Flocculation tank; 3. Settling tank; 4. Outlet main; 5. Raw water main; 6. Y-type filter; 7. Gate valve; 8. Dosing pipeline; 9. Sheung Shui area; 10. Mixing area; 11. Pipeline; 12. Water pump; 13. Opening; 14. Coagulation agitator; 15. Water distribution pipe; 16. Flocculation and stirring device; 17. Stirring shaft; Upturning paddle; 20, slow flow channel; 21, water distribution mesh; 22, clapboard; 23, mud bucket; 24, inclined plate; 25, drainage groove; 28. Microporous filter; 29. Main pipe; 30. Branch pipe; 31. Stirring motor.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

The utility model is a flocculation settling equipment, the main structure includes a coagulation tank 1, a flocculation tank 2 and a settling tank 3, and the coagulation tank 1, flocculation tank 2 and settling tank 3 are in the order from the front to the back of the process flow connected successively, and the rear end of the settling tank 3 is provided with a water main pipe 4, and the front end of the coagulation tank 1 is provided with a raw water main pipe 5, and the raw water main pipe 5 is also provided with a Y-shaped filter 6 and a gate valve 7, and also includes A medicine adding pipeline 8 , the medicine adding pipeline 8 communicates with the raw water main pipe 5 through the gate valve 7 .

The coagulation tank 1 is a closed tank, and includes an inner upper water zone 9 and an outer mixing zone 10, the mixing zone 10 communicates with the raw water main pipe 5, and on the top wall of the upper water zone 9 There is a pipeline 11 communicating with the flocculation tank 2, the pipeline 11 is provided with a water pump 12 and a gate valve 7, the side wall of the upper water area 9 is a bell mouth structure with the narrow end downward, and the upper water The lower end of the zone 9 is provided with an opening 13 communicating with the mixing zone 10, and a coagulation agitator 14 is arranged in the opening 13, and the coagulation agitator 14 is an open-type worm gear agitator with inclined blades; a coagulation tank 1 is used to replace the traditional coagulation pond. Because the coagulation tank 1 is a sealed tank, and the internal partition layout: the mixing zone 10 is on the periphery and communicates with the raw water main pipe 5, the raw water added with the flocculant enters the mixing zone 10 for preliminary mixing and preparation, and the coagulation and stirring The device 14 runs at high speed, and the slanted-blade open-type worm gear stirring method has small resistance on the one hand, which is beneficial to high-speed rotation, and on the other hand, the blades of high-speed stirring can make the water body form an upward and intense vortex, driving the water body in the mixing zone 10 to go up and enter from the opening 13 Sheung Shui District 9. Through the above structure and operation, the fine particles and flocculant in the raw water entering the upper water zone 9 are fully mixed and violently collided, which not only ensures the uniform mixing of the raw water and the coagulant, but also the process is fast, short-term and intense. , to meet the technical requirements of coagulation, which is conducive to the next step of flocculation reaction.

The top of the flocculation tank 2 is provided with a water distribution pipe 15, the water inlet end of the water distribution pipe 15 is connected with the pipeline 11, and the water outlet end of the water distribution pipe 15 points to the flocculation tank 2, and the setting of the water distribution pipe 15 can Evenly injecting water into the flocculation tank 2 is beneficial to subsequent dispersion and mixing, and avoids concentration of homogeneous water bodies. The flocculation tank 2 is provided with a flocculation stirring device 16, and the flocculation stirring device 16 includes a stirring shaft 17, a pressing blade paddle 18 and an upturning blade paddle 19, and the stirring shaft 17 is located in the center of the flocculation tank 2 and along Rotate clockwise, said down-pressing paddle 18 and upturning-up paddle 19 are three pieces respectively and are evenly distributed around the stirring shaft 17, which is conducive to a stirring operation with moderate strength; The blade is located at the top of the stirring shaft 17, combined with the clockwise rotation of the stirring shaft 17, the water body can be involved and pressed down, so that the water body at the top can be turned down towards the axis; Folding and located at the bottom of the stirring shaft 17; combined with the clockwise rotation of the stirring shaft 17, the water body can be involved and raised, so that the water body at the bottom can be rolled up towards the axis; Cooperating with each other, the water body can realize convective rolling from the four corners to the center, so that the water body under the flocculation reaction can roll up and down well, and the mixing is sufficient and soft, which is conducive to the flocculation reaction.

It also includes a slow flow channel 20, the slow flow channel 20 is sandwiched between the flocculation tank 2 and the sedimentation tank 3, and the bottom end on one side communicates with the bottom end of the flocculation tank 2, and the bottom end on the other side is provided There is a water distribution mesh 21 and it communicates with the settling tank 3 through the water distribution mesh 21. The partition plate 22 with a passage at the top is set in the slow flow channel 20; the setting of the slow flow channel 20, on the one hand, gives The flocculation reaction allows sufficient reaction time to ensure the full flocculation and combination of particles. On the other hand, the chaotic and mixed flow of water can be channeled and combed to consume too much potential energy and kinetic energy, so that the water flow is stable, which is beneficial to the next step. settlement. The setting of the water distribution mesh 21 is used to further disperse the water flow and buffer the impact force, so that the water flow can be injected into the settlement tank 3 softly and finely, so as to avoid disturbing the calm water body in the settlement tank 3 and ensure the continuous and efficient settlement.

The water distribution mesh 21 is located in the middle of the wall of the settling tank 3, and the settling tank 3 enters water from the middle, which is beneficial for the inclined plate 24 to play a role and the mud bucket 23 to collect impurities. The bottom of the settling tank 3 is provided with a mud bucket 23, and the middle and upper part of the settling tank 3 is provided with a sloping plate 24, which shortens the settling distance, increases the coalescence area, improves the processing capacity and separation efficiency, and reduces the amount of water Mutual disturbance is conducive to the deposition and coalescence of flocs. The impurities deposited on the sloping plate 24 and the impurities precipitated in the water fall along the sloping plate 24 into the mud bucket 23 below, which is convenient for centralized cleaning and collection. The top of the settling tank 3 is provided with a plurality of drains 25, and the outer wall of the settling tank 3 is also provided with a sump 26, and one end of the drain 25 passes through the wall of the settling tank 3 and communicates with the sump 26, The water outlet main pipe 4 communicates with the sump 26 .

The process flow of this device is: the raw water enters the mixing zone 10 of the coagulation tank 1 through the raw water main pipe 5, enters the upper water zone 9 of the coagulation tank 1 through the agitation of the coagulation agitator 14, and then enters the upper water zone 9 of the coagulation tank 1, and then flows through the pipeline 11 The water pump 12 draws the treated water from the top of the upper water area 9 and enters the water distribution pipe 15. After being distributed by the water distribution pipe 15, it is injected into the flocculation tank 2. Under the agitation of the coagulation and stirring device, the water body is rolled and mixed from the four corners to the middle. After fully reacting, it flows into the slow-flow channel 20 from the bottom, and the water body flows in an S shape under the blocking effect of the dividing plate 22, and the mature water body enters the middle part of the settling tank 3 from the water distribution mesh 21 at the bottom of the slow-flow channel 20, and Under the auxiliary blocking and settling action of the inclined plate 24, the precipitation of flocs and the overflow of clean water are completed, and impurities are deposited into the mud bucket 23, and the treated clean water enters the water collection tank 26 from the drainage tank 25, and finally enters the water outlet main pipe 4, and completes Water purification treatment.

One end of the water outlet main pipe 4 communicating with the sump 26 is provided with a water collection filter pipe 27 , and the water collection filter pipe 27 is provided with filtering micropores 28 , and the water outlet main pipe 4 is provided with a gate valve 7 and a water pump 12 . The setting of the water collection filter pipe 27 solves the problem of new pollution sources in the final stage of flocculation and sedimentation, and physically filters out suspended matter such as flocs, fallen leaves, and dust that may fall due to open-air operation through the added filter micropores 28, and further Guarantee the quality of water treatment.

The water distribution pipe 15 includes a main pipe 29 and branch pipes 30 . There are multiple branch pipes 30 and one end of them all communicates with the main pipe 29 . The branch pipes 30 are evenly distributed around the main pipe 29 . The water distribution pipe 15 adopts a divergent layout, and the effect of plane water distribution is good, and the outlet water is evenly dispersed.

The tops of the coagulation tank 1 and the flocculation tank 2 are equipped with stirring motors 31 . Electric drive is provided for the coagulation agitator 14 and the flocculation agitation device 16 .

The rotational speed of the coagulation agitator 14 is 100-200 r/min. The stirring is powerful, the upward effect is good, and the turbulent flow is intense and fully mixed.

The rotational speed of the flocculation and stirring device 16 is 50-100 r/min. Stir gently and fully to ensure the integrity and coagulation of flocs.

Embodiment 1: The utility model describes a kind of flocculation settling equipment, the main structure includes a coagulation tank 1, a flocculation tank 2 and a settling tank 3, and the coagulation tank 1, the flocculation tank 2 and the settling tank 3 are from The order from front to back is sequentially connected, and the rear end of the settling tank 3 is provided with an outlet main pipe 4, and the front end of the coagulation tank 1 is provided with a raw water main pipe 5, and the raw water main pipe 5 is also provided with a Y-shaped filter 6 and a gate valve. 7. It also includes a dosing pipeline 8, and the dosing pipeline 8 communicates with the raw water main pipe 5 through the gate valve 7.

The coagulation tank 1 is a closed tank, and includes an inner upper water zone 9 and an outer mixing zone 10, the mixing zone 10 communicates with the raw water main pipe 5, and on the top wall of the upper water zone 9 There is a pipeline 11 communicating with the flocculation tank 2, the pipeline 11 is provided with a water pump 12 and a gate valve 7, the side wall of the upper water area 9 is a bell mouth structure with the narrow end downward, and the upper water The lower end of the zone 9 is provided with an opening 13 communicating with the mixing zone 10, and a coagulation agitator 14 is arranged in the opening 13, and the coagulation agitator 14 is an open-type worm gear agitator with inclined blades and the rotating speed is a downward pressure paddle 180r /min; the coagulation tank 1 is used instead of the traditional coagulation pool. Because the coagulation tank 1 is a sealed tank, and the internal partition layout: the mixing zone 10 is on the periphery and communicates with the raw water main pipe 5, the raw water added with the flocculant enters the mixing zone 10 for preliminary mixing and preparation, and the coagulation and stirring The device 14 runs at high speed, and the slanted-blade open-type worm gear stirring method has small resistance on the one hand, which is beneficial to high-speed rotation, and on the other hand, the blades of high-speed stirring can make the water body form an upward and intense vortex, driving the water body in the mixing zone 10 to go up and enter from the opening 13 Sheung Shui District 9. Through the above structure and operation, the fine particles and flocculant in the raw water entering the upper water zone 9 are fully mixed and violently collided, which not only ensures the uniform mixing of the raw water and the coagulant, but also the process is fast, short-term and intense. , to meet the technical requirements of coagulation, which is conducive to the next step of flocculation reaction.

The top of the flocculation tank 2 is provided with a water distribution pipe 15, the water distribution pipe 15 includes a main pipe 29 and a branch pipe 30, the branch pipes 30 are multiple and one end thereof is connected with the main pipe 29, and the branch pipe 30 surrounds the main pipe 29 evenly distributed. The water distribution pipe 15 adopts a divergent layout, and the effect of plane water distribution is good, and the outlet water is evenly dispersed. The water inlet end of the main pipe 29 is connected with the pipeline 11, and the water outlet end of the sub-pipe points to the flocculation tank 2. The setting of the water distribution pipe 15 can evenly inject water into the flocculation tank 2, which is beneficial to the follow-up Dispersion and mixing to avoid concentration of homogeneous water bodies. The flocculation tank 2 is provided with a flocculation stirring device 16, and the flocculation stirring device 16 includes a stirring shaft 17, a pressing blade paddle 18 and an upturning blade paddle 19, and the stirring shaft 17 is located in the center of the flocculation tank 2 and along Clockwise rotation, the rotating speed of the flocculation stirring device 16 is 60r/min, the pressing blade paddle 18 and the turning blade paddle 19 are three pieces respectively and are evenly distributed around the stirring shaft 17, which is conducive to the stirring operation with moderate intensity; The press-down paddle 18 is a counterclockwise inclined hinge and is located on the top of the stirring shaft 17. Combining the clockwise rotation of the stirring shaft 17, the water body can be drawn in and pressed down, so that the upper water body rolls down towards the axis. The upturned blade paddle 19 is a clockwise inclined hinge and is located at the bottom of the stirring shaft 17; combined with the clockwise rotation of the stirring shaft 17, the water body can be involved and raised, so that the water body in the lower part is rolled up towards the axis; The combination of the down-pressing blade paddle 18 and the up-turning blade paddle 19 can make the water body convect and roll from the four corners to the center, so that the water body under the flocculation reaction can roll up and down well, and the mixing is sufficient and soft, which is beneficial to the flocculation reaction. conduct.

It also includes a slow flow channel 20, the slow flow channel 20 is sandwiched between the flocculation tank 2 and the sedimentation tank 3, and the bottom end on one side communicates with the bottom end of the flocculation tank 2, and the bottom end on the other side is provided There is a water distribution mesh 21 and it communicates with the settling tank 3 through the water distribution mesh 21. The partition plate 22 with a passage at the top is set in the slow flow channel 20; the setting of the slow flow channel 20, on the one hand, gives The flocculation reaction allows sufficient reaction time to ensure the full flocculation and combination of particles. On the other hand, the chaotic and mixed flow of water can be channeled and combed to consume too much potential energy and kinetic energy, so that the water flow is stable, which is beneficial to the next step. settlement. The setting of the water distribution mesh 21 is used to further disperse the water flow and buffer the impact force, so that the water flow can be injected into the settlement tank 3 softly and finely, so as to avoid disturbing the calm water body in the settlement tank 3 and ensure the continuous and efficient settlement.

The water distribution mesh 21 is located in the middle of the wall of the settling tank 3, and the settling tank 3 enters water from the middle, which is beneficial for the inclined plate 24 to play a role and the mud bucket 23 to collect impurities. The bottom of the settling tank 3 is provided with a mud bucket 23, and the middle and upper part of the settling tank 3 is provided with a sloping plate 24, which shortens the settling distance, increases the coalescence area, improves the processing capacity and separation efficiency, and reduces the amount of water Mutual disturbance is conducive to the deposition and coalescence of flocs. The impurities deposited on the sloping plate 24 and the impurities precipitated in the water fall along the sloping plate 24 into the mud bucket 23 below, which is convenient for centralized cleaning and collection. The top of the settling tank 3 is provided with a plurality of drains 25, and the outer wall of the settling tank 3 is also provided with a sump 26, and one end of the drain 25 passes through the wall of the settling tank 3 and communicates with the sump 26, The water outlet main pipe 4 communicates with the sump 26 . One end of the water outlet main pipe 4 communicating with the sump 26 is provided with a water collection filter pipe 27 , and the water collection filter pipe 27 is provided with filtering micropores 28 , and the water outlet main pipe 4 is provided with a gate valve 7 and a water pump 12 . The setting of the water collection filter pipe 27 solves the problem of new pollution sources in the final stage of flocculation and sedimentation, and physically filters out suspended matter such as flocs, fallen leaves, and dust that may fall due to open-air operation through the added filter micropores 28, and further Guarantee the quality of water treatment.

The process flow of this device is: the raw water enters the mixing zone 10 of the coagulation tank 1 through the raw water main pipe 5, enters the upper water zone 9 of the coagulation tank 1 through the agitation of the coagulation agitator 14, and then enters the upper water zone 9 of the coagulation tank 1, and then flows through the pipeline 11 The water pump 12 draws the treated water from the top of the upper water area 9 and enters the water distribution pipe 15. After being distributed by the water distribution pipe 15, it is injected into the flocculation tank 2. Under the agitation of the coagulation and stirring device, the water body is rolled and mixed from the four corners to the middle. After fully reacting, it flows into the slow-flow channel 20 from the bottom, and the water body flows in an S shape under the blocking effect of the dividing plate 22, and the mature water body enters the middle part of the settling tank 3 from the water distribution mesh 21 at the bottom of the slow-flow channel 20, and Under the auxiliary blocking and settling action of the inclined plate 24, the sedimentation of the flocs and the overflow of the clear water are completed, and the impurities are deposited into the mud bucket 23. The physical filtration finally enters the water outlet main pipe 4 to complete the water purification treatment.

Embodiment 2: The utility model describes a kind of flocculation settling equipment, the main structure includes a coagulation tank 1, a flocculation tank 2 and a settling tank 3, and the coagulation tank 1, the flocculation tank 2 and the settling tank 3 are from The order from front to back is sequentially connected, and the rear end of the settling tank 3 is provided with an outlet main pipe 4, and the front end of the coagulation tank 1 is provided with a raw water main pipe 5, and the raw water main pipe 5 is also provided with a Y-shaped filter 6 and a gate valve. 7. It also includes a dosing pipeline 8, and the dosing pipeline 8 communicates with the raw water main pipe 5 through the gate valve 7.

The coagulation tank 1 is a closed tank, and includes an inner upper water zone 9 and an outer mixing zone 10, the mixing zone 10 communicates with the raw water main pipe 5, and on the top wall of the upper water zone 9 There is a pipeline 11 communicating with the flocculation tank 2, the pipeline 11 is provided with a water pump 12 and a gate valve 7, the side wall of the upper water area 9 is a bell mouth structure with the narrow end downward, and the upper water The lower end of the zone 9 is provided with an opening 13 communicating with the mixing zone 10, and a coagulation agitator 14 is arranged in the opening 13, and the coagulation agitator 14 is an open-type worm gear agitator with inclined blades and the rotating speed is 120r/min; The coagulation tank 1 replaces the traditional coagulation tank. Because the coagulation tank 1 is a sealed tank, and the internal partition layout: the mixing zone 10 is on the periphery and communicates with the raw water main pipe 5, the raw water added with the flocculant enters the mixing zone 10 for preliminary mixing and preparation, and the coagulation and stirring The device 14 runs at high speed, and the slanted-blade open-type worm gear stirring method has small resistance on the one hand, which is beneficial to high-speed rotation, and on the other hand, the blades of high-speed stirring can make the water body form an upward and intense vortex, driving the water body in the mixing zone 10 to go up and enter from the opening 13 Sheung Shui District 9. Through the above structure and operation, the fine particles and flocculant in the raw water entering the upper water zone 9 are fully mixed and violently collided, which not only ensures the uniform mixing of the raw water and the coagulant, but also the process is fast, short-term and intense. , to meet the technical requirements of coagulation, which is conducive to the next step of flocculation reaction.

The top of the flocculation tank 2 is provided with a water distribution pipe 15, the water inlet end of the water distribution pipe 15 is connected with the pipeline 11, and the water outlet end of the water distribution pipe 15 points to the flocculation tank 2, and the setting of the water distribution pipe 15 can Evenly injecting water into the flocculation tank 2 is beneficial to subsequent dispersion and mixing, and avoids concentration of homogeneous water bodies. The flocculation tank 2 is provided with a flocculation stirring device 16, and the flocculation stirring device 16 includes a stirring shaft 17, a pressing blade paddle 18 and an upturning blade paddle 19, and the stirring shaft 17 is located in the center of the flocculation tank 2 and along Clockwise rotation, the rotating speed of the flocculation stirring device 16 is 80r/min, the pressing blade paddle 18 and the turning blade paddle 19 are three pieces respectively and are evenly distributed around the stirring shaft 17, which is conducive to the stirring operation with moderate intensity; The press-down paddle 18 is a counterclockwise inclined hinge and is located on the top of the stirring shaft 17. Combining the clockwise rotation of the stirring shaft 17, the water body can be drawn in and pressed down, so that the upper water body rolls down towards the axis. The upturned blade paddle 19 is a clockwise inclined hinge and is located at the bottom of the stirring shaft 17; combined with the clockwise rotation of the stirring shaft 17, the water body can be involved and raised, so that the lower part of the water body can be rolled up towards the axis; The combination of the down-pressing blade paddle 18 and the up-turning blade paddle 19 can make the water body convect and roll from the four corners to the center, so that the water body under the flocculation reaction can roll up and down well, and the mixing is sufficient and soft, which is beneficial to the flocculation reaction. conduct.

It also includes a slow flow channel 20, the slow flow channel 20 is sandwiched between the flocculation tank 2 and the sedimentation tank 3, and the bottom end on one side communicates with the bottom end of the flocculation tank 2, and the bottom end on the other side is provided There is a water distribution mesh 21 and it communicates with the settling tank 3 through the water distribution mesh 21. The partition plate 22 with a passage at the top is set in the slow flow channel 20; the setting of the slow flow channel 20, on the one hand, gives The flocculation reaction allows sufficient reaction time to ensure the full flocculation and combination of particles. On the other hand, the chaotic and mixed flow of water can be channeled and combed to consume too much potential energy and kinetic energy, so that the water flow is stable, which is beneficial to the next step. settlement. The setting of the water distribution mesh 21 is used to further disperse the water flow and buffer the impact force, so that the water flow can be injected into the settlement tank 3 softly and finely, so as to avoid disturbing the calm water body in the settlement tank 3 and ensure the continuous and efficient settlement.

The water distribution mesh 21 is located in the middle of the wall of the settling tank 3, and the settling tank 3 enters water from the middle, which is beneficial for the inclined plate 24 to play a role and the mud bucket 23 to collect impurities. The bottom of the settling tank 3 is provided with a mud bucket 23, and the middle and upper part of the settling tank 3 is provided with a sloping plate 24, which shortens the settling distance, increases the coalescence area, improves the processing capacity and separation efficiency, and reduces the amount of water Mutual disturbance is conducive to the deposition and coalescence of flocs. The impurities deposited on the sloping plate 24 and the impurities precipitated in the water fall along the sloping plate 24 into the mud bucket 23 below, which is convenient for centralized cleaning and collection. The top of the settling tank 3 is provided with a plurality of drains 25, and the outer wall of the settling tank 3 is also provided with a sump 26, and one end of the drain 25 passes through the wall of the settling tank 3 and communicates with the sump 26, The water outlet main pipe 4 communicates with the sump 26 . One end of the water outlet main pipe 4 communicating with the sump 26 is provided with a water collection filter pipe 27 , and the water collection filter pipe 27 is provided with filtering micropores 28 , and the water outlet main pipe 4 is provided with a gate valve 7 and a water pump 12 . The setting of the water collection filter pipe 27 solves the problem of new pollution sources in the final stage of flocculation and sedimentation, and physically filters out suspended matter such as flocs, fallen leaves, and dust that may fall due to open-air operation through the added filter micropores 28, and further Guarantee the quality of water treatment.

The process flow of this device is: the raw water enters the mixing zone 10 of the coagulation tank 1 through the raw water main pipe 5, enters the upper water zone 9 of the coagulation tank 1 through the agitation of the coagulation agitator 14, and then enters the upper water zone 9 of the coagulation tank 1, and then flows through the pipeline 11 The water pump 12 draws the treated water from the top of the upper water area 9 and enters the water distribution pipe 15. After being distributed by the water distribution pipe 15, it is injected into the flocculation tank 2. Under the agitation of the coagulation and stirring device, the water body is rolled and mixed from the four corners to the middle. After fully reacting, it flows into the slow-flow channel 20 from the bottom, and the water body flows in an S shape under the blocking effect of the dividing plate 22, and the mature water body enters the middle part of the settling tank 3 from the water distribution mesh 21 at the bottom of the slow-flow channel 20, and Under the auxiliary blocking and settling action of the inclined plate 24, the sedimentation of the flocs and the overflow of the clear water are completed, and the impurities are deposited into the mud bucket 23. The physical filtration finally enters the water outlet main pipe 4 to complete the water purification treatment.

Claims (6)

1. a flocculation settling equipment, comprising coagulation tank (1), flocculation tank (2) and settling tank (3), described coagulation tank (1), flocculation tank (2) and settling tank (3) according to technology The flow is connected sequentially from the front to the back, and the rear end of the settling tank (3) is provided with a water outlet main pipe (4), and the front end of the coagulation tank (1) is provided with a raw water main pipe (5), and the raw water main pipe (5 ) is also provided with a Y-type filter (6) and a gate valve (7), and also includes a dosing pipeline (8), and the dosing pipeline (8) is communicated with the raw water main pipe (5) through the gate valve (7), It is characterized by: The coagulation tank (1) is a closed tank body, and includes an upper water zone (9) of the inner layer and a mixing zone (10) of the outer layer, and the mixing zone (10) is communicated with the raw water main pipe (5), The top wall of the upper water area (9) is provided with a pipeline (11) connected to the flocculation tank (2), and the pipeline (11) is provided with a water pump (12) and a gate valve (7). The side wall of the upper water area (9) is a bell-mouth structure with the narrow end facing down, and the lower end of the upper water area (9) is provided with an opening (13) communicating with the mixing area (10), and the opening (13) ) is provided with a coagulation agitator (14), and the coagulation agitator (14) is an open-type worm gear agitator with inclined blades; The top of the flocculation tank (2) is provided with a water distribution pipe (15), the water inlet end of the water distribution pipe (15) communicates with the pipeline (11), and the water outlet end of the water distribution pipe (15) points to the flocculation tank ( 2), the flocculation tank (2) is provided with a flocculation stirring device (16), and the flocculation stirring device (16) includes a stirring shaft (17), a pressing blade paddle (18) and an upward turning blade paddle (19) , the stirring shaft (17) is located in the center of the flocculation tank (2) and rotates clockwise, and the pressing blade paddle (18) and the turning blade paddle (19) are three pieces respectively and surround the stirring shaft (17) Evenly distributed, the pressed blade paddle (18) is a hinged blade inclined counterclockwise and is located on the top of the stirring shaft (17), and the upward turning blade paddle (19) is a hinged blade inclined clockwise and is located on the stirring shaft (17) ) lower part; It also includes a slow flow channel (20), the slow flow channel (20) is sandwiched between the flocculation tank (2) and the settling tank (3), and the bottom end on one side is connected to the bottom end of the flocculation tank (2) The bottom end of the other side is provided with a water distribution mesh (21) and it communicates with the settling tank (3) through the water distribution mesh (21), and the top of the slow flow channel (20) is provided with a Channel partitions (22); The water distribution mesh (21) is located in the middle part of the settling tank (3) wall, the bottom of the settling tank (3) is provided with a mud bucket (23), and the middle and upper part of the settling tank (3) is provided with a slope plate (24), the top of the settling tank (3) is provided with a plurality of drains (25), and the outer wall of the settling tank (3) is also provided with a sump (26), one end of the drain (25) The pool wall passing through the settling tank (3) is communicated with the sump (26), and the water outlet main pipe (4) is communicated with the sump (26). 2. A kind of flocculation settling equipment according to claim 1, characterized in that: one end of the water outlet main pipe (4) communicated with the sump (26) is provided with a water collection filter pipe (27), and the water collection filter The pipe (27) is provided with filter micropores (28), and the water outlet main pipe (4) is provided with a gate valve (7) and a water pump (12). 3. A kind of flocculation settling equipment according to claim 1, characterized in that: said water distribution pipe (15) comprises a main pipe (29) and branch pipes (30), said branch pipes (30) are multiple and one end of which is It communicates with the main pipe (29), and the branch pipes (30) are evenly distributed around the main pipe (29). 4. The flocculation settling equipment according to claim 1, characterized in that: the tops of the coagulation tank (1) and the flocculation tank (2) are equipped with stirring motors (31). 5. The flocculation and sedimentation equipment according to claim 1, characterized in that: the rotational speed of the coagulation agitator (14) is 100-200 r/min. 6 . The flocculation and sedimentation equipment according to claim 1 , characterized in that: the rotational speed of the flocculation stirring device ( 16 ) is 50-100 r/min.