Decontamination device and wastewater treatment system

Abstract

The utility model discloses a decontamination device and a wastewater treatment system. The decontamination device provided by the embodiment of the utility model is used for treating desulfurization wastewater. The decontamination device comprises a settling tower, a water inlet pipe and a water outlet pipe, the settling tower is provided with a settling cavity and a water collecting cavity, the water collecting cavity surrounds at least part of the settling cavity, an overflow port higher than the bottom wall of the water collecting cavity is formed above the settling cavity, and the overflow port is communicated with the water collecting cavity. The water inlet pipe is connected with the settling tower and provided with a water inlet channel communicated with the settling cavity, and desulfurization wastewater flows into the settling cavity from the water inlet channel. The water outlet pipe is connected with the settling tower and is provided with a water outlet channel communicated with the water collecting cavity. According to the technical scheme, the wastewater treatment efficiency can be improved, sludge accumulation is reduced or avoided, and the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of wastewater treatment, and in particular to a decontamination device and a wastewater treatment system. Background Art

[0002] At present, the desulfurization wastewater generated by some industrial production contains a lot of sludge. If the desulfurization wastewater is treated directly, the treatment efficiency is low and the treatment effect is poor. The accumulated sludge is difficult to clean, which makes the wastewater treatment system run inefficiently. Utility Model Content

[0003] The embodiments of the present application provide a decontamination device and a wastewater treatment system, which can improve the treatment efficiency.

[0004] The decontamination device proposed in the embodiment of the present application is used to treat desulfurization wastewater, comprising:

[0005] A sedimentation tower, provided with a sedimentation chamber and a water collection chamber, wherein the water collection chamber is arranged around at least a portion of the sedimentation chamber, an overflow port higher than the bottom wall of the water collection chamber is arranged above the sedimentation chamber, and the overflow port is connected to the water collection chamber;

[0006] a water inlet pipe connected to the settling tower and provided with a water inlet channel connected to the settling chamber, and the desulfurization wastewater flows into the settling chamber from the water inlet channel; and

[0007] A water outlet pipe is connected to the settling tower and is provided with a water outlet channel communicating with the water collecting chamber.

[0008] In one embodiment, the settling chamber comprises:

[0009] A cavity body, disposed below the water collecting cavity; and

[0010] The overflow channel is arranged above the cavity body and one end of the overflow channel is connected to the cavity body. The overflow port is arranged at one end of the overflow channel away from the cavity body. The water collecting chamber is arranged around the overflow channel.

[0011] In one embodiment, the settling tower comprises:

[0012] The tower; and

[0013] A partition, which is arranged in the tower body and divides the internal space of the tower body to define the sedimentation chamber and the water collection chamber;

[0014] Wherein, the partition comprises a partition and a connecting tube connected to the partition, the partition is arranged between the cavity body and the water collecting cavity, and the connecting tube extends in the up-down direction to define the overflow channel.

[0015] In one embodiment, the tower body is an integrated structure;

[0016] And / or, the connecting tube is located in the middle of the partition.

[0017] In one embodiment, the settling tower is provided with a plurality of tooth structures, and the plurality of tooth structures are arranged at intervals along the circumference of the overflow port, and an overflow gap communicating with the water collecting chamber is defined between two adjacent tooth structures.

[0018] In one embodiment, a sewage outlet is provided at the bottom of the sedimentation chamber, and the decontamination device further comprises a sewage pump, which is provided at the sewage outlet and is used to pump the sludge out of the sedimentation chamber.

[0019] In one embodiment, along the direction close to the sewage outlet, at least a portion of the sedimentation chamber is tapered.

[0020] In one embodiment, it also includes a delivery piece, which is connected to the sedimentation tower or the water inlet pipe and is provided with a reagent chamber for containing a coagulant. The reagent chamber is connected to the sedimentation chamber or the water inlet channel to deliver the coagulant into the sedimentation chamber.

[0021] In one embodiment, the water inlet channel is arranged to extend along the tangential direction of the sedimentation chamber so that the desulfurization wastewater flows into the sedimentation chamber along the tangential direction of the sedimentation chamber.

[0022] The present application also provides a wastewater treatment system, including:

[0023] A decontamination device as described in any one of the above items;

[0024] a wastewater treatment device connected to the water outlet pipe; and

[0025] A sludge treatment device is connected to the settling tower.

[0026] The technical solution of the embodiment of the present application uses a decontamination device to perform sedimentation treatment on the desulfurization wastewater, further reducing or removing the sludge in the wastewater, reducing the sludge content in the wastewater entering the wastewater treatment device, thereby improving the subsequent treatment efficiency of the wastewater by the wastewater treatment device. In addition, reducing the sludge content in the wastewater entering the wastewater treatment device can also reduce or avoid sludge accumulation in the wastewater treatment device, which can effectively reduce the cleaning frequency and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of an embodiment of a wastewater treatment system of the present application;

[0029] Figure 2 This is a schematic structural diagram of an embodiment of a decontamination device of the present application;

[0030] Figure 3 A schematic top view of another embodiment of the decontamination device of the present application;

[0031] Figure 4 This is a schematic structural diagram of another embodiment of the decontamination device of the present application.

[0032] Description of Figure Numbers:

[0033] 100. Wastewater treatment system;

[0034] 100, decontamination device; 10, sedimentation tower; 10a, sedimentation chamber; 10a1, chamber body; 10a3, overflow channel; 10b, overflow port; 10c, overflow notch; 10d, water collection chamber; 10e, sewage outlet; 11, tower body; 13, partition; 131, partition; 133, connecting tube; 15, tooth structure; 30, water inlet pipe; 30a, water inlet channel; 50, water outlet pipe; 50a, water outlet channel; 70, delivery member; 90, sewage pump;

[0035] 200. Wastewater cyclone; 300. Wastewater treatment device; 400. Sludge treatment device.

[0036] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0038] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0039] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] Please refer to Figure 1 The embodiment of the present application provides a wastewater treatment system 100 for treating desulfurization wastewater. The wastewater treatment system 100 includes a wastewater cyclone 200, a decontamination device 100, a wastewater treatment device 300 and a sludge treatment device 400.

[0042] The desulfurized wastewater is first subjected to preliminary sedimentation and diversion in the wastewater cyclone 200 to separate larger solid particles in the desulfurized wastewater. The desulfurized wastewater after preliminary treatment still contains a lot of sludge. If the desulfurized wastewater is directly introduced into the wastewater treatment device 300 for treatment, the sludge contained therein will reduce the treatment efficiency of the wastewater treatment device 300 and the treatment effect will be poor. In addition, the sludge is easy to accumulate in the wastewater treatment device 300 and is difficult to clean.

[0043] In the embodiment of the present application, the desulfurization wastewater diverted by the wastewater cyclone 200 is first treated by the decontamination device 100, and the decontamination device 100 is used to further separate the sludge and wastewater. After being treated by the decontamination device 100, the outflowing wastewater enters the wastewater treatment device 300, and the sludge separated by the decontamination device 100 is discharged into the sludge treatment device 400 for treatment.

[0044] Please refer to Figure 2 In some embodiments of the present application, the decontamination device 100 includes a sedimentation tower 10, a water inlet pipe 30 and a water outlet pipe 50.

[0045] The settling tower 10 is a columnar structure extending in the vertical direction, which can be made of metal or other materials. The settling tower 10 is provided with a settling chamber 10a and a water collecting chamber 10d. The settling chamber 10a is used to provide a space for settling of desulfurized wastewater, and the water collecting chamber 10d is used to collect the wastewater after settling. The water collecting chamber 10d is arranged around at least part of the settling chamber 10a. For example, the water collecting chamber 10d can surround the upper half of the settling chamber 10a, or the water collecting chamber 10d can also surround the entire settling chamber 10a; or the water collecting chamber 10d can be arranged in a ring along the circumference of part of the settling chamber 10a, or the water collecting chamber 10d can occupy a certain arc on the circumference of the settling chamber 10a. An overflow port 10b is provided above the settling chamber 10a, and the overflow port 10b is connected to the water collecting chamber 10d and is arranged higher than the bottom wall of the water collecting chamber 10d. The water inlet pipe 30 and the water outlet pipe 50 are both connected to the settling tower 10. The water inlet pipe 30 is provided with a water inlet channel 30a connected to the settling chamber 10a, and the water outlet pipe 50 is provided with a water outlet channel 50a connected to the water collecting chamber 10d. The water inlet pipe 30 and the water outlet pipe 50 can be an integrated structure with the settling tower 10, or can be a pipeline structure made of metal or other materials, and sealed and connected to the settling tower 10 to prevent the desulfurization wastewater from leaking.

[0046] In the embodiment of the present application, the desulfurized wastewater flows into the sedimentation chamber 10a from the water inlet channel 30a and is temporarily stored in the sedimentation chamber 10a. The desulfurized wastewater in the sedimentation chamber 10a increases and the water level increases until the water level reaches the vicinity of the overflow port 10b, and the wastewater can flow out through the overflow port 10b. In this process, the sludge in the desulfurized wastewater settles under the action of gravity, and the wastewater located near the overflow port 10b above the sedimentation chamber 10a is always the clearer wastewater after sedimentation. The clarified wastewater flows into the water collection chamber 10d through the overflow port 10b and is collected. The end of the outlet pipe 50 away from the water collection chamber 10d is connected to the wastewater treatment device 300, so that the wastewater in the water collection chamber 10d can enter the wastewater treatment device 300 through the outlet channel 50a. In this way, the technical solution of the embodiment of the present application performs sedimentation treatment on the desulfurization wastewater through the decontamination device 100, further reduces or removes the sludge in the wastewater, and reduces the sludge content in the wastewater entering the wastewater treatment device 300, thereby improving the subsequent treatment efficiency of the wastewater by the wastewater treatment device 300. In addition, reducing the sludge content in the wastewater entering the wastewater treatment device 300 can also reduce or avoid sludge accumulation in the wastewater treatment device 300, which can effectively reduce the cleaning frequency and improve work efficiency.

[0047] It can be understood that the water inlet pipe 30 and the water outlet pipe 50 can be normally open; or the water inlet pipe 30 and the water outlet pipe 50 are respectively provided with a water inlet valve and a water outlet valve. For example, the water inlet channel 30a and the settling chamber 10a can be controlled by opening and closing the water inlet valve. When the amount of wastewater in the settling chamber 10a is large, the water inlet valve can be closed and opened again after the wastewater in the settling chamber 10a settles for a period of time; of course, the flow rate and flow velocity of the desulfurized wastewater flowing into the settling chamber 10a can also be controlled by controlling the opening of the water inlet valve. Similarly, the water inlet channel 30a and the water collecting chamber 10d can be controlled by controlling the water outlet valve, and the flow rate and flow velocity of the wastewater flowing out of the water collecting chamber 10d can be controlled.

[0048] In order to improve the sedimentation efficiency and sedimentation effect, in some embodiments, the decontamination device 100 also includes a delivery member 70. The delivery member 70 is connected to the sedimentation tower 10 or the water inlet pipe 30, and is provided with a reagent chamber for holding a coagulant, and the reagent chamber is connected to the sedimentation chamber 10a or the water inlet channel 30a, so that the coagulant can be delivered into the sedimentation chamber 10a. The coagulant can be selected as lime, etc., which can cause the colloidal particles and the suspended particles in the desulfurization wastewater to condense and aggregate, separate from the liquid phase, and facilitate deposition. The coagulant can be delivered into the sedimentation chamber 10a in the form of droplets, so as to control the content of the coagulant in the sedimentation chamber 10a. The delivery member 70 can be arranged in the sedimentation chamber 10a, for example, the delivery member 70 can be connected to the cavity wall of the sedimentation chamber 10a, so that the coagulant can be directly delivered into the sedimentation chamber 10a. Alternatively, the delivery member 70 can also be arranged in the water inlet pipe 30, so that the reagent chamber is connected to the water inlet channel 30a, and the coagulant is delivered into the water inlet channel 30a and flows into the sedimentation chamber 10a along with the water flow in the water inlet channel 30a, which is conducive to fully mixing the coagulant with the wastewater, ensuring uniformity and improving sedimentation efficiency. In addition, the delivery member 70 is arranged on the water inlet pipe 30, which is also convenient for disassembly and replacement.

[0049] Reference Figure 3 In one embodiment, the water inlet channel 30a is arranged to extend along the tangential direction of the sedimentation chamber 10a, so that the desulfurized wastewater flows into the sedimentation chamber 10a along the tangential direction of the sedimentation chamber 10a. In this embodiment, the cross-sectional profile of the sedimentation chamber 10a is roughly circular, and the desulfurized wastewater is introduced into the sedimentation chamber 10a in a tangential manner, so that the particles in the wastewater are settled under the action of gravity and centrifugal force, thereby improving the sedimentation efficiency. When the decontamination device 100 also includes a delivery member 70, the vortex formed by the wastewater flowing into the sedimentation chamber 10a along the tangential direction also facilitates the full mixing of the coagulant aid and the wastewater, further improving the sedimentation efficiency and sedimentation effect.

[0050] Please refer to Figure 2In one embodiment of the present application, the sedimentation chamber 10a includes a chamber body 10a1 and an overflow channel 10a3. The chamber body 10a1 is arranged below the water collecting chamber 10d; the overflow channel 10a3 is arranged above the chamber body 10a1, and one end is connected to the chamber body 10a1, and an overflow port 10b is provided at the end of the overflow channel 10a3 away from the chamber body 10a1. In the embodiment of the present application, the desulfurization wastewater is mainly settled in the chamber body 10a1, and the wastewater in the upper layer of the chamber body 10a1 is relatively clear, and flows out through the overflow channel 10a3 and the overflow port 10b. The water collecting chamber 10d in this embodiment is arranged around the overflow channel 10a3, that is, the water collecting chamber 10d is arranged around the upper part of the sedimentation chamber 10a, and the chamber body 10a1 is arranged below the water collecting chamber 10d, and the structure is relatively simple and compact.

[0051] Specifically, the settling tower 10 includes a tower body 11 and a partition 13. It is arranged in the tower body 11 and divides the internal space of the tower body 11 to define a settling chamber 10a and a water collecting chamber 10d. It can be understood that the tower body 11 and the partition 13 can be made of the same material or different materials, and connected by welding or the like. In order to improve the integrity, the tower body 11 is an integrated structure; or, in other embodiments, the tower body 11 includes a cylinder and a cover body, the cover body is arranged on the top of the cylinder body, and can be connected to the cylinder body by riveting or welding or the like, so as to facilitate the overall structural assembly of the settling tower 10.

[0052] In the embodiment of the present application, the partition 13 includes a partition 131 and a connecting tube 133 connected to the partition 131. The partition 131 is adapted to the cross-sectional profile of the internal space of the tower body 11. For example, the tower body 11 is roughly cylindrical, and the partition 131 is also circular. The partition 131 is arranged between the cavity body 10a1 and the water collecting cavity 10d to separate the two chambers, and the connecting tube 133 extends in the up-down direction to define the overflow channel 10a3.

[0053] In one embodiment, the connecting tube 133 is located in the middle of the partition 131. Optionally, the connecting tube 133 is a substantially cylindrical structure, and the connecting tube 133 is spaced apart from the tower body 11 on the peripheral side to define a water collection chamber 10d surrounding the overflow channel 10a3, so that wastewater can flow into the water collection chamber 10d from any point on the circumference of the overflow port 10b, thereby improving the water collection efficiency.

[0054] Of course, in Figure 4 In the embodiment shown, the overflow channel 10a3 has the same flow area as the upper part of the cavity body 10a1, and the water collecting chamber 10d is arranged around the overflow channel 10a3 and at least part of the cavity body 10a1, so that the water collecting chamber 10d can temporarily store more wastewater flowing out of the overflow port 10b, playing a good buffering role. The outlet pipe 50 is arranged below the water collecting chamber 10d, so that the outlet channel 50a is connected to the water collecting chamber 10d from the bottom wall of the water collecting chamber 10d, so as to facilitate the discharge of wastewater.

[0055] Please refer to Figure 2 and Figure 4 In one embodiment, the settling tower 10 is provided with a plurality of tooth structures 15, which are arranged at intervals along the circumference of the overflow port 10b. The shape of the tooth structure 15 can be a trapezoid, a triangle, a square, etc., which is not limited in the embodiment of the present application. An overflow notch 10c connected to the water collection chamber 10d is defined between two adjacent tooth structures 15. The plurality of overflow notches 10c are arranged at intervals along the circumference of the overflow port 10b. The provision of the overflow notch 10c can reduce the effect of water surface tension, so that the wastewater in the overflow channel 10a3 can flow out faster, thereby improving the water collection efficiency.

[0056] like Figure 2 As shown, in one embodiment, the sludge in the desulfurization wastewater is deposited to the bottom of the sedimentation chamber 10a, and a sewage outlet 10e is provided at the bottom of the sedimentation chamber 10a. The decontamination device 100 also includes a sewage pump 90, which is provided at the sewage outlet 10e. The sewage pump 90 is used to pump the sludge out of the sedimentation chamber 10a from the sewage outlet 10e, so as to facilitate the treatment of the sludge. Specifically, the sludge pumped out from the sewage outlet 10e can enter the sludge treatment device 400 directly or by transport. The sludge treatment device 400 includes a filter press, and the water in the sludge is removed by the filter press, so as to facilitate the collection and treatment of solid particles.

[0057] Furthermore, in one embodiment, along the direction close to the sewage outlet 10e, at least part of the sedimentation chamber 10a is set to be gradually contracted. For example, along the up and down direction, the sedimentation chamber 10a can be divided into at least a first section and a second section, and the second section connects the first section and the sewage outlet 10e, so that the sedimentation tower 10 of the first section is roughly a cylindrical cylinder, and the sedimentation tower 10 of the second section is roughly a conical cylinder, so that along the direction close to the sewage outlet 10e, the flow area of ​​the second section gradually decreases. In this way, at least part of the sedimentation chamber 10a that is set to be gradually contracted is conducive to the sedimentation of sludge along the inclined wall surface, and can make the sludge gather at the sewage outlet 10e, thereby improving the sewage discharge efficiency.

[0058] The above is an explanation of the specific implementation method of the decontamination device 100 of the present application. It can be understood that since the wastewater treatment system 100 of the present application adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0059] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0060] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A decontamination device for treating desulfurization wastewater, characterized in that: include: A sedimentation tower, provided with a sedimentation chamber and a water collection chamber, wherein the water collection chamber is arranged around at least a portion of the sedimentation chamber, an overflow port higher than the bottom wall of the water collection chamber is arranged above the sedimentation chamber, and the overflow port is connected to the water collection chamber; A water inlet pipe connected to the settling tower and provided with a water inlet channel connected to the settling chamber, and the desulfurization wastewater flows into the settling chamber from the water inlet channel; as well as A water outlet pipe is connected to the settling tower and is provided with a water outlet channel communicating with the water collecting chamber.

2. The decontamination device according to claim 1, characterized in that The settling chamber comprises: A cavity body, disposed below the water collecting cavity; and An overflow channel is arranged above the cavity body and one end of the overflow channel is connected to the cavity body. The overflow port is arranged at one end of the overflow channel away from the cavity body. The water collecting chamber is arranged around the overflow channel.

3. The decontamination device according to claim 2, characterized in that The settling tower comprises: The tower; and A partition, which is arranged in the tower body and divides the internal space of the tower body to define the sedimentation chamber and the water collection chamber; Wherein, the partition comprises a partition and a connecting tube connected to the partition, the partition is arranged between the cavity body and the water collecting cavity, and the connecting tube extends in the up-down direction to define the overflow channel.

4. A decontamination device as claimed in claim 3, characterized in that The tower body is an integrated structure; And / or, the connecting tube is located in the middle of the partition.

5. The decontamination device according to claim 1, characterized in that The settling tower is provided with a plurality of tooth structures, and the plurality of tooth structures are arranged at intervals along the circumference of the overflow port, and an overflow gap communicating with the water collecting chamber is defined between two adjacent tooth structures.

6. The decontamination device according to claim 1, characterized in that A sewage outlet is provided at the bottom of the sedimentation chamber, and the decontamination device further comprises a sewage pump, which is arranged at the sewage outlet and is used to pump the sludge out of the sedimentation chamber.

7. The decontamination device according to claim 6, characterized in that Along the direction close to the sewage outlet, at least a portion of the sedimentation chamber is gradually contracted.

8. The decontamination device according to any one of claims 1 to 7, characterized in that It also includes a delivery piece, which is connected to the sedimentation tower or the water inlet pipe and is provided with a reagent chamber for containing a coagulant. The reagent chamber is connected to the sedimentation chamber or the water inlet channel to deliver the coagulant into the sedimentation chamber.

9. The decontamination device according to any one of claims 1 to 7, characterized in that The water inlet channel is arranged to extend along the tangential direction of the sedimentation chamber so that the desulfurization wastewater flows into the sedimentation chamber along the tangential direction of the sedimentation chamber.

10. A wastewater treatment system, characterized in that: include: A decontamination device as claimed in any one of claims 1 to 9; A wastewater treatment device connected to the water outlet pipe; as well as A sludge treatment device is connected to the settling tower.

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