Coagulation reactor and series coagulation reaction system

Abstract

The application discloses a coagulation reactor and a series coagulation reaction system, which comprise a reaction cylinder, a water inlet pipe entering the reaction cylinder in a tangential direction, and a plurality of coagulation inclined plate assemblies arranged uniformly on the inner wall of the reaction cylinder in a circumferential direction and used for promoting coagulation flocs to settle in a central area, wherein the coagulation inclined plate assemblies are arranged at an angle of 70 DEG + 10 DEG with the horizontal direction, and the coagulation inclined plate assemblies in adjacent rows are staggered, and the series coagulation reaction system adopting the coagulation reactor is also disclosed. The coagulation reactor is provided with the plurality of coagulation inclined plate assemblies, and the coagulation inclined plate assemblies in adjacent rows are staggered, so that the coagulation reaction can be strengthened, the reaction effect can be improved, and the coagulation flocs can be promoted to settle in the central area from the bottom of the coagulation inclined plate assemblies, thereby greatly reducing the concentration of suspended particulate matters in the main fluid entering the next coagulation reactor.

Description

Technical Field

[0001] This invention belongs to the field of water treatment technology, and particularly relates to a coagulation reactor and a series coagulation reaction system. Background Technology

[0002] Coagulation is an important technology widely used in water treatment and pollution control. During coagulation, a coagulant is added to the water, causing suspended particulate matter and fine particles to aggregate and form flocs. These flocs can be separated from the water by sedimentation or filtration, thus purifying the water. However, existing coagulation technologies have some drawbacks, such as less than ideal reaction efficiency, slow reaction rates, the need for large amounts of coagulant, poor flocculation at the reactor walls, and low floc formation. Therefore, developing a novel coagulation technology to improve reaction efficiency and reduce costs is a crucial need in this field. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention provides a coagulation reactor and a series coagulation reaction system.

[0004] The present invention is implemented as follows: a coagulation reactor includes a reaction cylinder and an inlet pipe that enters the reaction cylinder tangentially. The reactor is characterized in that: several rows of coagulation inclined plate assemblies are uniformly arranged along the circumferential direction on the inner wall of the reaction cylinder to promote the sedimentation of coagulated flocs into the central region. The angle between the coagulation inclined plate assemblies and the horizontal direction is 70°±10°, and adjacent rows of coagulation inclined plate assemblies are staggered.

[0005] Preferably, the spacing between adjacent concrete inclined slab assemblies in the same column is not less than 400 mm.

[0006] Preferably, the coagulation inclined plate assembly includes a bottom plate that is inclined into the reaction cylinder, and guide plates that are inclined towards the sides of the bottom plate are provided on both sides of the bottom plate. Collecting plates are provided at equal intervals along the width direction of the bottom plate. The collecting plates are perpendicular to the bottom plate, and a collecting groove is formed between adjacent collecting plates.

[0007] Preferably, the angle α between the guide plate and the base plate is 135°±10°.

[0008] Preferably, the length of the base plate is not less than 500mm; the width of the base plate is not less than 300mm.

[0009] Preferably, the height of the collecting plate and the spacing between adjacent collecting plates are both not less than 35mm.

[0010] Preferably, the upper end of the base plate is provided with a fixing plate in the vertical direction.

[0011] It also includes a suspension frame, and several concrete inclined plate assemblies are arranged along the height of the suspension frame, with each concrete inclined plate assembly inclined at 70°±10° to the suspension frame.

[0012] Preferably, the coagulation reactor is a square reactor or a circular reactor.

[0013] This invention also discloses a series coagulation reaction system, comprising several coagulation reactors connected in series. The coagulation reactors are those described above. The effluent and influent between each coagulation reactor employ three influent and effluent methods depending on the original influent concentration C range:

[0014] When C > 10 g / L of water, the coagulation reactor adopts tangential water inlet at the lower periphery and tangential water outlet at the upper periphery.

[0015] When C is 1-10 g / L of water, the coagulation reactor adopts tangential water inlet at the upper periphery and tangential water outlet at the lower periphery;

[0016] When C < 1 g / L of water, the coagulation reactor uses an alternating influent and effluent method.

[0017] The advantages and technical effects of this invention are as follows: This invention adds a coagulation inclined plate assembly to the existing coagulation reactor. For different initial influent concentrations, different influent and effluent series connection methods are adopted between multiple reaction tanks. This coagulation inclined plate assembly can enhance the coagulation reaction, improve the reaction effect, and promote the sedimentation of coagulated flocs from the bottom of the assembly into the central area, which can greatly reduce the concentration of suspended particulate matter in the main fluid entering the next coagulation reactor. Simultaneously, it reduces energy consumption during operation and the number of coagulation reactors connected in series, thus lowering operating costs. The implementation of this technology can be widely applied in water treatment engineering, industrial wastewater treatment, municipal sewage treatment, and other fields, providing new technical means for improving water quality and protecting the environment. Attached Figure Description

[0018] Figure 1a This is a schematic diagram of the structure of this square coagulation reactor;

[0019] Figure 1b This is a schematic diagram of the structure of this circular coagulation reactor;

[0020] Figure 2 This is a schematic diagram of the distribution structure of the same column of concrete inclined slab components;

[0021] Figure 3 yes Figure 2 Side view;

[0022] Figure 4 This is a schematic diagram of the distribution structure of adjacent columns of concrete inclined slab components;

[0023] Figure 5 This is the main view of the concrete inclined plate assembly;

[0024] Figure 6 yes Figure 5 Top view;

[0025] Figure 7 yes Figure 5 The right view;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the concrete inclined plate assembly;

[0027] Figures 9 to 11 This is a schematic diagram of three inlet and outlet water modes connected in series in a coagulation reaction system.

[0028] In the diagram: 1. Reaction cylinder; 21. Inlet pipe; 22. Outlet pipe; 3. Concrete inclined plate assembly; 3-1. Bottom plate; 3-2. Guide plate; 3-3. Collection plate; 3-4. Fixing plate; 4. Suspension frame. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] Please refer to Figure 1 to Figure 8 A coagulation reactor includes a reaction cylinder 1, wherein the reaction cylinder 1 is a circular coagulation reactor. Figure 1b ) or square coagulation reactor (see Figure 1aA water inlet pipe 21 enters the reaction cylinder tangentially and connects to a water outlet pipe 22. Several rows of coagulation inclined plate assemblies 3 are evenly arranged along the circumference of the inner wall of the reaction cylinder to promote the sedimentation of coagulated flocs in the central area, and are at an angle of 70°±10° to the vertical direction. The coagulation inclined plate assemblies are directly welded or fixedly connected to the inner wall of the reaction cylinder via a suspension frame 4. In this embodiment, the coagulation inclined plate assemblies are installed on the suspension frame, meaning several coagulation inclined plate assemblies are arranged along the height of the suspension frame. During installation, it is necessary to ensure that each coagulation inclined plate assembly is inclined at 70°±10° to the suspension frame. This angle is an important technical feature for achieving the purpose of this invention. As the main fluid moves circumferentially along the inner wall of the reaction cylinder, it not only improves the reaction... This not only improves the efficiency of the coagulation process but also allows the coagulated flocs within the coagulation inclined plate assembly to accumulate to a certain weight, then slide down the bottom plate and move towards the center of the reaction cylinder under their own weight and water flow, eventually settling at the bottom of the reactor and being discharged. This significantly reduces the concentration of suspended particulate matter in the main body entering the next reaction cylinder, thereby reducing the burden on the next stage of coagulation reactor and improving the wastewater treatment cycle. To ensure that the direction of the main fluid flow is not disrupted, the spacing between adjacent coagulation inclined plate assemblies in the same row is not less than 400 mm. The distance Y1 between any two adjacent rows of coagulation inclined plate assemblies from the horizontal plane is not less than 500 mm, and the distance Y2 between the other row of coagulation inclined plate assemblies from the horizontal plane is not less than 700 mm, so that adjacent rows of coagulation inclined plate assemblies are staggered.

[0031] The coagulation inclined plate assembly includes a base plate 3-1, and guide plates 3-2 inclined towards the sides of the base plate. The function of the guide plates 3-2 is to allow some sewage to enter the coagulation inclined plate assembly without disrupting the circumferential movement of the main fluid, thereby prolonging the reaction time and improving the reaction efficiency. Collection plates 3-3 are provided at equal intervals along the width of the base plate. The collection plates are perpendicular to the base plate, and a collection trough is formed between adjacent collection plates. When the main fluid encounters the coagulation inclined plate assembly, the coagulated flocs will be collected in the collection trough. Compared with the traditional method without a collection trough, this accelerates the efficient coagulation reaction that can occur in the collection trough and improves the coagulation effect.

[0032] Please see Figure 5 The present invention adds several rows of the above-mentioned coagulation inclined plate assemblies to an existing coagulation reactor (taking a square coagulation reactor as an example). The angle β between each coagulation inclined plate assembly and the vertical direction is 70°±10°. The coagulation inclined plate assemblies in adjacent rows are staggered, which ensures that the main fluid in the reaction tank always moves in the circumferential direction and that each inclined plate assembly can play its best role. In actual operation, it can enhance the coagulation reaction, improve the reaction effect, and promote the coagulation flocs to enter the central area from the bottom of the coagulation inclined plate assembly and settle, which can greatly reduce the concentration of suspended particulate matter in the main fluid entering the next coagulation reactor.

[0033] Preferably, the angle α between the guide plate and the bottom plate is 135°±10°. The purpose of this angle is to avoid disrupting the movement of the main fluid along the inner wall of the reaction vessel while simultaneously providing a guiding effect.

[0034] Preferably, the length L of the bottom plate is not less than 500mm. In actual design and manufacturing, it is selected according to the volume of the coagulation reactor. The length of the bottom plate should not be too short, otherwise it will not play the role of blocking and enriching the coagulated flocs.

[0035] Preferably, the width L1 of the base plate is not less than 300mm.

[0036] Preferably, the height L2 of the collecting plate and the distance L3 between adjacent collecting plates are not less than 30mm.

[0037] Preferably, the upper end of the bottom plate is provided with a fixing plate 3-4 in the vertical direction, which serves to fix it to the inner wall of the coagulation reactor cylinder or the suspension frame 4, and at the same time can prevent the fluid from short-circuiting upward. Whether direct welding or suspension frame connection is used, it must be ensured that it is at 70°±10° with the inner wall of the reaction cylinder.

[0038] Preferably, the fixed plate is arc-shaped or square to accommodate both circular and square coagulation reactors.

[0039] This invention also discloses a series coagulation reaction system, comprising several coagulation reactors connected in series. The coagulation reactors are those described above. The effluent and influent between each coagulation reactor employ three influent and effluent methods depending on the original influent concentration C range:

[0040] When C > 10 g / L water, the coagulation reactor uses a lower peripheral tangential inlet and an upper peripheral tangential outlet; please refer to [link / reference]. Figure 9 ;

[0041] When C is 1-10 g / L of water, the coagulation reactor uses tangential inlet at the upper periphery and tangential outlet at the lower periphery; please refer to [link / reference]. Figure 10 ;

[0042] When C < 1 g / L of water, the coagulation reactor uses an alternating influent and effluent system, meaning that after running with the upper influent for a period of time, it switches to the lower influent. Please refer to [link / reference]. Figure 11 .

[0043] In actual coagulation reactions, this invention can also reduce energy consumption during operation and reduce the number of coagulation reactors connected in series, thereby reducing operating costs. In actual operation, it can enhance the coagulation reaction, improve the reaction effect, and promote the coagulation flocs to enter the central area from the bottom of the coagulation inclined plate assembly and settle, which can greatly reduce the concentration of suspended particulate matter in the main fluid entering the next coagulation reactor.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coagulation reactor, comprising a reaction cylinder and an inlet pipe tangentially entering the reaction cylinder, characterized in that: The inner wall of the reaction cylinder is uniformly arranged with several rows of coagulation inclined plate assemblies along the circumferential direction to promote the coagulation flocs to enter the central area and settle. The angle between the coagulation inclined plate assembly and the horizontal direction is 70°±10°, and the adjacent rows of coagulation inclined plate assemblies are staggered. The spacing between adjacent concrete inclined slab components in the same column shall not be less than 400 mm; The coagulation inclined plate assembly includes a bottom plate that is inclined into the reaction cylinder. The bottom plate has guide plates that are inclined towards the sides of the bottom plate. The collecting plates are evenly spaced along the width of the bottom plate. The collecting plates are perpendicular to the bottom plate, and a collecting groove is formed between adjacent collecting plates.

2. The coagulation reactor according to claim 1, characterized in that: The angle α between the guide plate and the base plate is 135°±10°.

3. The coagulation reactor according to claim 1, characterized in that: The length of the base plate is not less than 500mm; the width of the base plate is not less than 300mm.

4. The coagulation reactor according to claim 1, characterized in that: The height of the collecting plate and the spacing between adjacent collecting plates are both not less than 35mm.

5. The coagulation reactor according to claim 1, characterized in that: The upper end of the base plate is provided with a fixing plate in the vertical direction.

6. The coagulation reactor according to claim 1, characterized in that: It also includes a suspension frame, and several concrete inclined plate assemblies are arranged along the height of the suspension frame, with each concrete inclined plate assembly inclined at 70°±10° to the suspension frame.

7. The coagulation reactor according to any one of claims 1 to 6, characterized in that: The coagulation reactor can be a square reactor or a circular reactor.

8. A series coagulation reaction system, comprising a plurality of coagulation reactors connected in series, characterized in that: The coagulation reactor described in claim 7 is used. The effluent and influent of each coagulation reactor are configured with three different influent and effluent methods based on the original influent concentration C range: When C > 10 g / L of water, the coagulation reactor adopts tangential water inlet at the lower periphery and tangential water outlet at the upper periphery; When C is 1-10 g / L of water, the coagulation reactor adopts tangential water inlet at the upper periphery and tangential water outlet at the lower periphery; When C < 1 g / L of water, the coagulation reactor uses alternating inlet and outlet water.

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