Coagulation, flocculation and sedimentation integrated tank and sewage treatment equipment

Abstract

The utility model discloses a coagulation, flocculation and sedimentation integrated pool and sewage treatment equipment, wherein the coagulation, flocculation and sedimentation integrated pool comprises a pool body, a water inlet and distribution chamber is arranged in the pool body, a first reaction chamber communicated with the water inlet and distribution chamber is arranged below the water inlet and distribution chamber, and a second reaction chamber is arranged above the first reaction chamber; the second reaction chamber is located on the inner side of the water inlet and distribution chamber and communicated with the sedimentation tank located on the periphery of the second reaction chamber, a stirring elevator is arranged at the second reaction chamber, a mud scraping plate of the stirring elevator is close to the bottom of the first reaction chamber, and the stirring elevator lifts liquid from the first reaction chamber to the second reaction chamber through an impeller; a first dosing pipe, a second dosing pipe and a third dosing pipe which respectively extend into the water distribution chamber, the first reaction chamber and the second reaction chamber are also arranged in the tank body, and the second dosing pipe is connected with a diatomite adding device. According to the utility model, the occupied area is reduced, stirring and sludge scraping can be realized by only one set of equipment, organic matters such as COD (Chemical Oxygen Demand) in a water body can be effectively removed, and the effluent quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment, and in particular to an integrated coagulation, flocculation and sedimentation tank and wastewater treatment equipment. Background Technology

[0002] In wastewater treatment, flocculation, coagulation, and sedimentation are common methods for removing suspended solids and other substances from wastewater. Therefore, flocculation tanks, coagulation tanks, and sedimentation tanks are important treatment equipment.

[0003] The patent document with authorization announcement number CN219185918U discloses a device that integrates a flocculation tank, a coagulation tank and a sedimentation tank.

[0004] In this structure, the flocculation tank, coagulation tank, and settling tank are arranged horizontally, which requires a large space. Furthermore, the flocculation tank and coagulation tank need to be equipped with a stirring mechanism and a sludge scraping mechanism, which increases the equipment cost and operating cost. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems in the existing technology and to provide an integrated coagulation, flocculation and sedimentation tank and wastewater treatment equipment.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A coagulation-flocculation-sedimentation integrated tank includes a tank body. An inlet water distribution chamber is located within the tank body. A first reaction chamber, communicating with the inlet water distribution chamber, is located below the inlet water distribution chamber. A second reaction chamber is located above the first reaction chamber, situated inside the inlet water distribution chamber and communicating with a sedimentation tank located on its periphery. A stirring and lifting machine is installed in the second reaction chamber. The sludge scraper of the stirring and lifting machine is located at the bottom of the first reaction chamber. The stirring and lifting machine uses an impeller to lift liquid from the first reaction chamber to the second reaction chamber. The tank body also includes a first dosing pipe extending into the distribution chamber, a second dosing pipe extending into the first reaction chamber, and a third dosing pipe extending into the second reaction chamber. The second dosing pipe is connected to a diatomaceous earth additive device.

[0008] Preferably, the first reaction chamber is provided with a cleaning pipe for cleaning the scraper blade, and one end of the pipe, away from the center of the first reaction chamber, is connected to a media supply pipe extending outside the pool body.

[0009] Preferably, the cleaning pipe is spiral-shaped.

[0010] Preferably, the cleaning pipe is fixed in the first reaction chamber by a set of C-shaped pipe clamps.

[0011] Preferably, the openings of some C-shaped pipe clamps face upwards, and the openings of others face the center of the first reaction chamber.

[0012] Preferably, the medium supply pipe extends from the outside of the pool body, passes through the sedimentation zone of the sedimentation tank, and then enters the first reaction chamber and connects to the cleaning pipe.

[0013] Preferably, the clear water zone of the sedimentation tank is connected to an annular collecting trough located inside the clear water zone via a set of radial collecting troughs located on inclined plates or inclined pipes. The annular collecting trough is connected to an outlet trough via a drainage trough, and the height of the collecting trough is higher than that of the drainage trough.

[0014] Preferably, the diatomaceous earth adding device includes a mixing tank, a mixer is provided in the mixing tank, and a drug outlet is provided at the lower part of the mixing tank. The drug outlet is connected to the second drug dosing pipe through a drug dosing pipeline including a drug dosing pump.

[0015] Preferably, a dosing hopper is provided at the top of the mixing tank.

[0016] Wastewater treatment system, including any of the above-described integrated coagulation, flocculation and sedimentation tanks.

[0017] The advantages of this utility model's technical solution are mainly reflected in:

[0018] This invention makes full use of the longitudinal space through the rational layout of the coagulation zone, flocculation zone and sedimentation tank, which helps to reduce the footprint. Furthermore, it can achieve mixing and sludge scraping with only one set of equipment, saving parts. In addition, the second dosing pipe of the second reaction chamber is connected to the diatomaceous earth supply device, which can effectively utilize the properties of diatomaceous earth to improve the coagulation effect and effectively remove organic matter such as COD from the water, which is conducive to improving the quality of the effluent.

[0019] This invention incorporates a cleaning pipe within the tank, enabling convenient cleaning of the scraper blades of the sludge scraper and the sludge area at the bottom of the first reaction chamber. Furthermore, the pipe's design effectively enhances cleaning coverage and improves cleaning results.

[0020] The diatomaceous earth supply device of this invention adopts the method of supplying diatomaceous earth after mixing, which can effectively improve the dissolution efficiency of diatomaceous earth and sewage in the first reaction chamber, thereby accelerating the coagulation effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the integrated coagulation, flocculation, and sedimentation tank of this utility model;

[0022] Figure 2 This is a schematic diagram of the integrated coagulation, flocculation, and sedimentation tank of this utility model, which includes a cleaning pipeline.

[0023] Figure 3 This is a schematic diagram of the cleaning pipe of this utility model. Detailed Implementation

[0024] The purpose, advantages, and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of this utility model, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0025] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Example 1

[0027] The integrated coagulation, flocculation, and sedimentation tank disclosed in this utility model will be described below with reference to the accompanying drawings. Figure 1 As shown, it includes a tank body 100, an inlet water distribution chamber 200 is provided inside the tank body 100, a first reaction chamber 300 is provided below the inlet water distribution chamber 200 and communicates with it, and a second reaction chamber 400 is provided above the first reaction chamber 300. The second reaction chamber 400 is located inside the inlet water distribution chamber 200 and communicates with a sedimentation tank 500 located on its periphery. A stirring elevator 600 is provided at the second reaction chamber 400. The sludge scraper 610 of the stirring elevator 600 is located at the bottom of the first reaction chamber 300. The stirring elevator 600 lifts the liquid from the first reaction chamber 300 to the second reaction chamber 400 through an impeller 620. The tank body 100 is also provided with a first dosing pipe 700 extending into the inlet water distribution chamber, a second dosing pipe 800 extending into the first reaction chamber 300, and a third dosing pipe 900 extending into the second reaction chamber 400. The second dosing pipe 800 is connected to a diatomaceous earth adding device A00.

[0028] Specifically, the pool body 100 can be any known feasible shape, and is not limited here. (See attached image.) Figure 1As shown, a frustum-shaped umbrella plate B00 is provided inside the pool body 100. A reaction chamber enclosure plate C00 is provided at the upper opening of the frustum formed by the umbrella plate B00. The bottom plate and side plates of the reaction chamber enclosure plate C00, together with the umbrella plate B00, form a water inlet and distribution chamber 200. The water inlet and distribution chamber 200 has a triangular cross-section. The water inlet and distribution chamber is connected to an inlet pipe support platform E00. The inlet pipe support platform E00 passes through the pool body 100 and the umbrella plate B00 and extends into the water inlet and distribution chamber 200. A distance is maintained between the bottom plate and the umbrella plate B00, and / or liquid distribution holes are provided on the portion of the bottom plate outside the side plates to allow the liquid in the water inlet and distribution chamber to enter the first reaction chamber 300 formed by the umbrella plate B00, the pool body 100, and the reaction chamber enclosure plate C00. The reaction chamber enclosure plate C00 forms a second reaction chamber 400.

[0029] The aforementioned mixing and lifting machine 600 is, for example, the JJG series mixing and scraping machine manufactured by Yixing Huiming Environmental Protection Equipment Co., Ltd. (See attached image) Figure 1 As shown, the motor of the stirring elevator 600 is located at the top of the second reaction chamber 400. The motor is connected to and drives a rotating shaft 630, which is rotatably mounted on the top plate of the second reaction chamber 400. The rotating shaft is connected to and drives the impeller 620 of a lift pump located at the bottom of the second reaction chamber 400. A synchronous shaft 640 is coaxially connected below the impeller 620, extending to the bottom of the first reaction chamber 300. The lower end of the synchronous shaft is connected to a bearing located at the bottom of the first reaction chamber 300. An impeller 620 that mates with the pump casing is located in the middle of the rotating shaft 630. When the rotating shaft 630 rotates, the impeller 620 lifts the liquid in the first reaction chamber 300 into the second reaction chamber 400. A scraper 610 is located at the lower end of the synchronous shaft, and the scraper is close to the bottom of the first reaction chamber. Simultaneously, a stirring paddle can be mounted on the rotating shaft to stir the liquid in the second reaction chamber.

[0030] As attached Figure 1 As shown, the outer wall of the umbrella plate B00 is also provided with an annular support platform E00. The support platform E00, the umbrella plate B00, and the pool body 100 form the main structure of the sedimentation tank 500. The support platform E00 has a drain hole D10 that connects the sedimentation tank 500 and the space between the support platform E00 and the second reaction chamber 400. Of course, the support platform E00 can also be set on other feasible structures, and its bottom can maintain a gap with the umbrella plate to form a drain channel. For example, the support platform can be connected to the inner wall of the pool body.

[0031] The sedimentation tank 500 is provided with an inclined tube or inclined plate 510, which divides the cavity of the sedimentation tank 500 into a sedimentation zone located below the inclined plate or inclined tube and a clear water zone located above the inclined tube or inclined plate.

[0032] As attached Figure 1 As shown, the clear water zone of the sedimentation tank 500 is connected to an annular collection trough 550 located inside the clear water zone through a set of radial water collection troughs 540 located on the inclined plate or inclined pipe 510. The annular collection trough 550 is set on the support platform. The annular collection trough 550 is connected to the outlet trough 570 through the drainage trough 560. The height of the water collection trough 540 is higher than that of the drainage trough 560.

[0033] As attached Figure 1 As shown, the diatomaceous earth adding device A00 includes a mixing tank A10, a mixer A20 is installed in the mixing tank A10, and a drug outlet A13 is provided at the lower part of the mixing tank A10. The drug outlet A13 is connected to the second drug dosing pipe 800 through a dosing pipeline A30 including a dosing pump A31. A dosing hopper A11 is provided at the top of the mixing tank A10 to facilitate the addition of diatomaceous earth. At the same time, a water inlet A12 is also provided on the mixing tank A10 for connecting to a water source. The dosing pipeline A30 includes pipes and devices such as the dosing pump A31, valves, and flow meters installed on the pipes. When dosing is required, the valve on the pipe is opened, and the dosing pump A31 is started to pump the liquid into the first reaction chamber.

[0034] During operation, wastewater enters the inlet water distribution chamber through the inlet pipe and mixes with PAC (polyaluminum chloride) added through the first dosing pipe. The liquid in the inlet water distribution chamber enters the first reaction chamber, where diatomaceous earth is added through the second dosing pipe. Simultaneously, the motor of the lifting mixer A20 drives the shaft to rotate, and the scraper increases the mixing effect between the diatomaceous earth and the wastewater. When the water level in the first reaction chamber reaches a certain height, the impeller lifts the liquid in the first reaction chamber to the second reaction chamber, where PAM (polyacrylamide) is added through the third dosing pipe. The effluent from the second reaction chamber enters the sedimentation zone of the sedimentation tank through the drain hole, and sludge settles through inclined plates or inclined pipes. The clarified liquid after passing through the inclined plates or inclined pipes enters the annular collection tank 550 through the collection tank 540, then flows into the effluent tank 570 through the drainage tank 560 and is discharged through the effluent pipe at the bottom of the effluent tank 570.

[0035] As attached Figure 2 Appendix Figure 3 As shown, in order to facilitate cleaning of the scraper 610 and the bottom of the first reaction chamber 300, a cleaning pipe F00 for cleaning the scraper 610 is provided in the first reaction chamber 300. The cleaning pipe is provided with downward spray holes. The shape of the cleaning pipe F00 can be designed as needed. In order to ensure the coverage of the cleaning, the cleaning pipe F00 is spiral.

[0036] The cleaning pipe F00 is fixed inside the first reaction chamber 300 by a set of C-shaped pipe clamps G00. The C-shaped pipe clamps G00 are set on a mounting platform located at the lower end of the umbrella plate B00 inside the first reaction chamber. To ensure the stability of the cleaning pipe, some of the C-shaped pipe clamps have their clamps facing upwards, and some have their clamps facing the center of the first reaction chamber. For example, four C-shaped pipe clamps have their clamps facing upwards, and three C-shaped pipe clamps have their clamps facing outwards. Each C-shaped pipe clamp can have a connecting screw or connecting rod opposite to its clamp to allow the C-shaped pipe clamp to connect to the mounting platform. The end of the cleaning pipe F00 away from the center of the first reaction chamber is connected to a media supply pipe H00 extending outside the pool body 100. The media supply pipe H00 extends from outside the pool body 100, passes through the sedimentation area of ​​the sedimentation tank 500, and then enters the first reaction chamber 300 to connect to the cleaning pipe. At the same time, the outer end of the media supply pipe H00 is connected to an air source and / or a water source.

[0037] Example 2

[0038] This embodiment discloses a wastewater treatment system, including the coagulation, flocculation and sedimentation integrated tank as described above.

[0039] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A coagulation, flocculation and sedimentation integrated tank, comprising a tank body, characterized in that: The pool body is provided with a water inlet distribution chamber, a first reaction chamber is arranged below the water inlet distribution chamber and communicates with the water inlet distribution chamber, a second reaction chamber is arranged above the first reaction chamber, the second reaction chamber is located at the inner side of the water inlet distribution chamber and communicates with a sedimentation tank located at the outer periphery of the second reaction chamber, a stirring lifter is arranged at the second reaction chamber, a mud scraping plate of the stirring lifter is located at the bottom of the first reaction chamber, the stirring lifter lifts liquid from the first reaction chamber to the second reaction chamber through an impeller; the pool body is further provided with a first dosing pipe extending into the distribution chamber, a second dosing pipe extending into the first reaction chamber and a third dosing pipe extending into the second reaction chamber, and the second dosing pipe is connected with a diatomite adding device.

2. The coagulation-sedimentation integrated tank according to claim 1, characterized in that: A cleaning pipe for cleaning the mud scraping plate is arranged in the first reaction chamber, one end of the cleaning pipe away from the center of the first reaction chamber is connected with a medium supply pipe extending out of the pool body.

3. The coagulation-sedimentation integrated tank according to claim 2, characterized in that: The cleaning pipe is spiral-shaped.

4. The coagulation-sedimentation integrated tank according to claim 2, characterized in that: The cleaning pipe is fixed in the first reaction chamber by a group of C-shaped pipe clamps.

5. The coagulation-sedimentation integrated tank according to claim 4, characterized in that: The mouths of part of the C-shaped pipe clamps are upward, and the mouths of part of the C-shaped pipe clamps are toward the center of the first reaction chamber.

6. The coagulation-sedimentation integrated tank according to claim 2, characterized in that: The medium supply pipe extends from outside the pool body, passes through a sedimentation area of the sedimentation tank, extends into the first reaction chamber and is connected with the cleaning pipe.

7. The coagulation-sedimentation integrated tank according to claim 1, characterized in that: The clear water area of the sedimentation tank is communicated with an annular collecting groove located at the inner side of the clear water area through a group of radial collecting troughs located on the inclined plate or inclined pipe, the annular collecting groove is communicated with an outlet trough through a drainage trough, and the height of the collecting trough is higher than that of the drainage trough.

8. The coagulation, flocculation and sedimentation integrated tank according to any one of claims 1 to 7, characterized in that: The diatomite adding device comprises a medicine mixing tank, a stirrer is arranged at the medicine mixing tank, a medicine outlet is arranged at the lower part of the medicine mixing tank, and the medicine outlet is connected with the second dosing pipe through a dosing pipeline comprising a dosing pump.

9. The coagulation-sedimentation integrated tank according to claim 8, characterized in that: A dosing hopper is arranged at the top of the medicine mixing tank.

10. A sewage treatment system comprising the coagulation-flocculation-sedimentation integrated tank according to any one of claims 1-9.

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