Vertical flow flocculation and sedimentation coupling tank

Abstract

The utility model relates to the technical field of water treatment, in particular to a vertical flow flocculent precipitation coupling tank which comprises a coupling tank body and a structural member, the lower end of the coupling tank body is fixedly connected with a sludge collecting hopper; sludge discharge pipes are arranged at the lower ends of the sludge collecting hoppers; a water inlet pipe extending into the coupling tank body is mounted at the left end of the coupling tank body; a water collecting tank is mounted at the upper end of the coupling pool body; a water outlet pipe is mounted at the right lower end of the water collecting tank; a structural member is mounted in the middle inside the coupling tank body; through four different structural forms, flocculants are further fully mixed and reacted, a very good flocculation effect is achieved, turbulent flow is locally generated in a water body under the condition that the original precipitation state is not influenced, so that flocculation reaction is locally generated again in the precipitation tank, and the flocculation effect is greatly improved on the basis of not disturbing precipitated solid particles. And the small-particle solids and suspended solids are collided and combined again to form large solid particles, so that the solid removal rate of the sedimentation tank is improved, and the effluent quality of the sedimentation tank is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment, in particular to a vertical flow flocculation and sedimentation coupling pool. BACKGROUND

[0002] The flocculation and sedimentation treatment refers to a water treatment process that flocculants are added into water to make the suspended particles in the water coagulate and precipitate. After the coagulants are added into the water, the colloidal and dispersed particles in the water collide and coagulate to form flocculation bodies due to the molecular attraction. The size and mass of the flocculation bodies are continuously increased during the sedimentation process, and the settling velocity is increased with the depth.

[0003] The existing types of sedimentation tanks for water treatment mainly include horizontal flow sedimentation tanks and inclined tube / plate sedimentation tanks. They have the common feature that a stable laminar flow form is given to the water flow entering the sedimentation tank. The gravity of the particles in the water is utilized to achieve the purpose of solid-liquid separation. However, they have a common shortcoming that the flocculation reaction is basically completed in the flocculation tank, and no flocculation reaction occurs in the sedimentation tank. Therefore, the small particles of solids may be in a suspended state and cannot be removed by gravity.

[0004] Therefore, in view of the problem that no flocculation reaction occurs in the sedimentation tank and the small particles of solids cannot be removed by gravity, a vertical flow flocculation and sedimentation coupling pool can be designed. SUMMARY

[0005] In order to overcome the problem that no flocculation reaction occurs in the sedimentation tank and the small particles of solids cannot be removed by gravity.

[0006] The technical scheme of the present application is as follows: a vertical flow flocculation and sedimentation coupling pool, which comprises a coupling pool body and a structural member. The lower end of the coupling pool body is fixedly connected with a sludge collecting hopper. The lower end of the sludge collecting hopper is provided with a sludge discharge pipe. The left end of the coupling pool body is provided with a water inlet pipe extending into the coupling pool body. The upper end of the coupling pool body is provided with a water collecting tank. The right lower end of the water collecting tank is provided with a water outlet pipe. The inner side of the coupling pool body is provided with the structural member at the middle part.

[0007] Preferably, the water to be treated enters the coupling pool body from the water inlet pipe. The structural member has a good sedimentation effect on the alum flowers regardless of whether it is an inclined plate / inclined tube, a straight pipe, a folded plate or a variable flow folded plate. The water power conditions in the coupling pool body are adjusted by the structural member, the flow velocity gradient in the coupling pool body is improved, secondary flocculation is formed in the coupling pool body, the flocculants are further stirred and mixed by the structural member in the coupling pool body, a good flocculation effect is achieved, the turbidity of the effluent is further reduced, the sludge is precipitated at the bottom of the sludge collecting hopper and then discharged through the sludge discharge pipe. As the water level rises, the treated water is discharged from the water collecting tank through the water outlet pipe.

[0008] As a preferred, the structural member adopts an inclined plate or an inclined pipe, and is made of stainless steel, PE, ethylene-propylene copolymer material, polypropylene or polyvinyl chloride.

[0009] As a preferred, the structural member adopts a straight pipe, and is made of stainless steel, PE, ethylene-propylene copolymer material, polypropylene or polyvinyl chloride.

[0010] As a preferred, the structural member adopts a folded plate, and is made of stainless steel, PE, ethylene-propylene copolymer material, polypropylene or polyvinyl chloride.

[0011] As a preferred, the structural member adopts a variable-flow folded plate, and is made of stainless steel, PE, ethylene-propylene copolymer material, polypropylene or polyvinyl chloride.

[0012] As a preferred, the vertical-flow flocculation and sedimentation coupling pool is automatically controlled by a PLC control system.

[0013] As a preferred, the water outlet is arranged on the outer surface of the extending part of the water inlet pipe into the coupling pool body.

[0014] As a preferred, the sludge collecting hopper is designed according to the structure of the sludge concentration pool.

[0015] The vertical-flow flocculation and sedimentation coupling pool is applied to high-turbidity water treatment, water purification treatment in a water supply and drainage system, and large, medium and small water supply plants.

[0016] The present application has the following advantages: the four different structural forms of the device are realized by filling the inclined plate / inclined pipe, straight pipe, folded plate or variable-flow folded plate, the flocculant is further fully mixed and reacted, good flocculation effect is achieved, the water plant can reduce the dosage of flocculant, the sedimentation distance is shortened, the sedimentation time is reduced, the sedimentation separation zone maintains a high upward flow rate, the land occupation of the sedimentation device system is reduced, the hydraulic conditions of the device are adjusted, the internal flow velocity gradient is improved, secondary flocculation is formed in the device, the flocculant is further mixed and reacted by the internal folded plate or variable-flow folded plate, good flocculation effect is achieved, the effluent turbidity is further reduced, the effluent water quality of the water plant is improved and the water quality is stable, the inclined plate / inclined pipe, straight pipe, folded plate and variable-flow folded plate have good sedimentation effect on alum flowers, the operation load of the device is improved, the sludge concentration effect is greatly improved according to the structure design of the sludge concentration tank, the sludge can be directly dewatered and treated, the sludge collected and discharged from the device is collected and discharged through the sludge collecting tank and sludge discharge pipe installed at the bottom, the water purification system does not need to stop running during sludge discharge, on the basis of the original sedimentation pool laminar flow form, a device is added without affecting the original sedimentation state to make the water body locally turbulent, so that flocculation reaction occurs again in the sedimentation pool, the purpose is to make small solid particles and suspended solids collide and combine again on the basis of not disturbing the solid particles that have completed sedimentation, so that the solid particles are formed, thereby improving the solid removal rate of the sedimentation pool and further improving the effluent water quality of the sedimentation pool, a vertical flow flocculation and sedimentation coupling pool is arranged after the flocculation reaction pool, the coagulant can be further fully mixed and reacted, the sedimentation effect is further improved through the flocculation and sedimentation coupling effect, the requirements of the waterworks effluent turbidity index are met, the device has the advantages of simple structure, small land occupation, high efficiency, high automation degree, convenient installation and use, stable operation, safety and reliability, strong adaptability, large impact load resistance and the ability to adapt to different water quality treatment process requirements. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A plane structure schematic diagram of a vertical flow inclined plate or inclined pipe flocculation and sedimentation coupling pool of the embodiment 1 of the present application is shown.

[0018] Figure 2 A plane structure schematic diagram of a vertical flow straight pipe flocculation and sedimentation coupling pool of the embodiment 2 of the present application is shown.

[0019] Figure 3 A plane structure schematic diagram of a vertical flow folded plate flocculation and sedimentation coupling pool of the embodiment 3 of the present application is shown.

[0020] Figure 4 A plane structure schematic diagram of a vertical flow variable-flow folded plate flocculation and sedimentation coupling pool of the embodiment 4 of the present application is shown.

[0021] Explanation of reference signs: 1, coupling pool body; 11, structural member; 12, water inlet pipe; 13, water outlet pipe; 14, water collecting tank; 15, sludge collecting hopper; 16, sludge discharge pipe. DETAILED DESCRIPTION

[0022] The application will be further described below in conjunction with the drawings and examples.

[0023] Example 1: Vertical flow inclined plate or inclined tube flocculation sedimentation coupling pool

[0024] Referring to Figure 1 , the application provides an embodiment: a vertical flow flocculation sedimentation coupling pool, comprising a coupling pool body 1 and a structural member 11; the lower end of the coupling pool body 1 is fixedly connected with a sludge collecting hopper 15; the lower end of the sludge collecting hopper 15 is provided with a sludge discharge pipe 16; the left end of the coupling pool body 1 is installed with a water inlet pipe 12 extending into the coupling pool body 1; the upper end of the coupling pool body 1 is installed with a water collecting tank 14; the right lower end of the water collecting tank 14 is installed with a water outlet pipe 13; the inner side of the middle part of the coupling pool body 1 is installed with the structural member 11, which adopts an inclined plate or an inclined tube.

[0025] In operation, the water to be treated enters the coupling pool body 1 from the water inlet pipe 12; the structural member 11 adopts an inclined plate / inclined tube, which has a good sedimentation effect on alum flowers, and adjusts the hydraulic conditions in the coupling pool body 1 and improves the flow velocity gradient in the coupling pool body 1; secondary flocculation is formed in the coupling pool body 1; the structural member 11 in the coupling pool body 1 further stirs and mixes the flocculating agent, achieving a good flocculation effect and further reducing the turbidity of the effluent; the sludge is deposited at the bottom of the sludge collecting hopper 15 and then discharged through the sludge discharge pipe 16; as the water level rises, the treated water is discharged from the water collecting tank 14 through the water outlet pipe 13.

[0026] Example 2: Vertical flow straight pipe flocculation sedimentation coupling pool

[0027] Referring to Figure 2 , the application provides an embodiment: a vertical flow flocculation sedimentation coupling pool, comprising a coupling pool body 1 and a structural member 11; the lower end of the coupling pool body 1 is fixedly connected with a sludge collecting hopper 15; the lower end of the sludge collecting hopper 15 is provided with a sludge discharge pipe 16; the left end of the coupling pool body 1 is installed with a water inlet pipe 12 extending into the coupling pool body 1; the upper end of the coupling pool body 1 is installed with a water collecting tank 14; the right lower end of the water collecting tank 14 is installed with a water outlet pipe 13; the inner side of the middle part of the coupling pool body 1 is installed with the structural member 11, which adopts a straight pipe.

[0028] In the working process, the water to be treated enters the coupling pool body 1 from the water inlet pipe 12, the structure 11 adopts a straight pipe, has a good precipitation effect on alum flowers, and adjusts the hydraulic conditions in the coupling pool body 1 through the structure 11, improves the flow velocity gradient in the coupling pool body 1, and forms secondary flocculation in the coupling pool body 1, further stirs and mixes the reaction flocculating agent through the structure 11 in the coupling pool body 1, achieves a good flocculation effect, further reduces the turbidity of the effluent, and the sludge is precipitated at the bottom of the sludge collecting hopper 15 and then discharged through the sludge discharge pipe 16; as the water level rises, the treated water is discharged from the water collecting tank 14 through the water outlet pipe 13.

[0029] Example 3: Vertical flow folded plate flocculation and sedimentation coupling pool

[0030] Referring to Figure 3 The present application provides an embodiment: a vertical flow flocculation and sedimentation coupling pool, comprising a coupling pool body 1 and a structure 11; the lower end of the coupling pool body 1 is fixedly connected with a sludge collecting hopper 15; the lower end of the sludge collecting hopper 15 is provided with a sludge discharge pipe 16; the left end of the coupling pool body 1 is provided with a water inlet pipe 12 extending into the coupling pool body 1; the upper end of the coupling pool body 1 is provided with a water collecting tank 14; the lower end of the right side of the water collecting tank 14 is provided with a water outlet pipe 13; the inner side of the middle of the coupling pool body 1 is provided with a structure 11, and the structure 11 adopts a folded plate.

[0031] In the working process, the water to be treated enters the coupling pool body 1 from the water inlet pipe 12, the structure 11 adopts a straight pipe, has a good precipitation effect on alum flowers, and adjusts the hydraulic conditions in the coupling pool body 1 through the structure 11, improves the flow velocity gradient in the coupling pool body 1, and forms secondary flocculation in the coupling pool body 1, further stirs and mixes the reaction flocculating agent through the structure 11 in the coupling pool body 1, achieves a good flocculation effect, further reduces the turbidity of the effluent, and the sludge is precipitated at the bottom of the sludge collecting hopper 15 and then discharged through the sludge discharge pipe 16; as the water level rises, the treated water is discharged from the water collecting tank 14 through the water outlet pipe 13.

[0032] Example 4: Vertical flow variable flow folded plate flocculation and sedimentation coupling pool

[0033] Referring to Figure 4 The present application provides an embodiment: a vertical flow flocculation and sedimentation coupling pool, comprising a coupling pool body 1 and a structure 11; the lower end of the coupling pool body 1 is fixedly connected with a sludge collecting hopper 15; the lower end of the sludge collecting hopper 15 is provided with a sludge discharge pipe 16; the left end of the coupling pool body 1 is provided with a water inlet pipe 12 extending into the coupling pool body 1; the upper end of the coupling pool body 1 is provided with a water collecting tank 14; the lower end of the right side of the water collecting tank 14 is provided with a water outlet pipe 13; the inner side of the middle of the coupling pool body 1 is provided with a structure 11, and the structure 11 adopts a folded plate.

[0034] When working, the water to be treated enters the coupling pool body 1 from the water inlet pipe 12, the structure 11 adopts a variable flow baffle plate, which has a good sedimentation effect on alum flowers, and adjusts the hydraulic conditions in the coupling pool body 1 through the structure 11, improves the flow velocity gradient in the coupling pool body 1, and forms secondary flocculation in the coupling pool body 1. The structure 11 in the coupling pool body 1 further stirs and mixes the flocculating agent, achieves good flocculation effect, further reduces the turbidity of the effluent, and the sludge is deposited at the bottom of the sludge collecting hopper 15, and then discharged through the sludge discharge pipe 16. With the rise of water level, the treated water is discharged from the water collecting tank 14 through the water outlet pipe 13.

[0035] Through the above steps, on the basis of the original sedimentation pool water flow laminar flow form, without affecting the original sedimentation state, a device is added to make the water body locally produce turbulent flow, so as to locally produce flocculation reaction in the sedimentation tank again. The purpose is to make small solid particles and suspended solids collide and combine again on the basis of not disturbing the solid particles that have completed sedimentation, so as to improve the solid removal rate of the sedimentation tank and further improve the effluent water quality of the sedimentation tank. A vertical flow flocculation and sedimentation coupling pool is arranged after the flocculation reaction tank. The coagulant can be further fully mixed and reacted, and the sedimentation effect is further improved through the coupling effect of flocculation and sedimentation, so as to meet the requirements of the effluent turbidity index of the waterworks. The coupling pool has the advantages of simple structure, small occupation, high efficiency, high automation, convenient installation and use, stable operation, safety and reliability, strong adaptability, large impact load resistance, and can meet the processing process requirements of different water quality to solve the problem that flocculation reaction does not occur in the sedimentation tank and small solid particles cannot be removed by gravity.

[0036] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the above embodiments. Within the knowledge of those skilled in the art, various changes can be made without departing from the purpose of the application.

Claims

1. A vertical flow flocculation-sedimentation coupled cell, characterized in that: It comprises a coupling pool body (1) and a structural member (11); the lower end of the coupling pool body (1) is fixedly connected with a sludge collecting hopper (15); the lower end of the sludge collecting hopper (15) is provided with a sludge discharge pipe (16); the left end of the coupling pool body (1) is installed with a water inlet pipe (12) extending into the coupling pool body (1); the upper end of the coupling pool body (1) is installed with a water collecting tank (14); the lower right end of the water collecting tank (14) is installed with a water outlet pipe (13); the inner side of the coupling pool body (1) is installed with the structural member (11) at the middle part.

2. The vertical flow flocculation-sedimentation combined cell according to claim 1, characterized in that: The structural member (11) is a sloping plate or a sloping pipe, and is made of stainless steel, PE, ethylene-propylene copolymer material, polypropylene or polyvinyl chloride.

3. The vertical flow flocculation-sedimentation combined cell according to claim 1, characterized in that: The structural member (11) is a straight pipe, and is made of stainless steel, PE, ethylene-propylene copolymer material, polypropylene or polyvinyl chloride.

4. The vertical flow flocculation-sedimentation combined cell according to claim 1, characterized in that: The structural member (11) is a folded plate, and is made of stainless steel, PE, ethylene-propylene copolymer material, polypropylene or polyvinyl chloride.

5. The vertical flow flocculation-sedimentation combined cell according to claim 1, characterized in that: The structural member (11) is a variable flow folded plate, and is made of stainless steel, PE, ethylene-propylene copolymer material, polypropylene or polyvinyl chloride.

6. The vertical flow flocculation-sedimentation combined cell according to claim 1, characterized in that: The vertical flow flocculation and sedimentation coupling pool is automatically controlled by a PLC control system.

7. The vertical flow flocculation-sedimentation combined cell according to claim 1, characterized in that: The outer surface of the water inlet pipe (12) extending into the coupling pool body (1) is provided with equidistantly distributed water outlets.

8. The vertical flow flocculation-sedimentation combined cell according to claim 1, characterized in that: The sludge collecting hopper (15) is designed according to the structure of a sludge thickening tank.

9. The vertical flow flocculation-sedimentation combined cell according to claim 1, characterized in that: It is applicable to high-turbidity water treatment, water purification treatment in a water supply and drainage system, and large, medium and small water supply plants.

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