A flotation phosphorus removal wastewater treatment device

Abstract

This utility model discloses a flotation phosphorus removal wastewater treatment device, including a treatment tank and an anti-sludge structure. The treatment tank has an outlet for effluent discharge. The anti-sludge structure covers the treatment tank on one side of the outlet and includes a filter screen that slides longitudinally on one side of the outlet. The filter screen has a rectangular frame around its periphery for contacting the filter screen with the treatment tank. This utility model not only connects a filter screen at the outlet to block larger debris, but also includes a drive source that drives the filter screen to slide up and down in the treatment tank, and a connecting rod connecting the drive source and the filter screen. During use, the drive source drives the connecting rod to move the filter screen up and down, blocking the outlet while reducing sludge buildup at the filter screen. Furthermore, the treatment tank includes a sliding groove for the sliding block and a cleaning brush for cleaning the filter screen, further cleaning the filter screen and reducing maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an air flotation phosphorus removal wastewater treatment device. Background Technology

[0002] The air flotation phosphorus removal wastewater treatment device is a water treatment equipment that uses microbubble technology to remove phosphorus from water.

[0003] Currently available air flotation phosphorus removal wastewater treatment devices work by injecting microbubbles into the water, causing suspended solids, colloidal particles, and dissolved phosphorus to combine with the bubbles and form a scum layer. This scum is then removed by a scraping device, thus achieving effective phosphorus removal. However, when the wastewater is discharged, it still contains some fine solid waste. This solid waste can cause blockages at the outlet, affecting the stability of the effluent and the long-term safety of operation. Utility Model Content

[0004] The purpose of this invention is to provide an air flotation phosphorus removal wastewater treatment device to solve the problem mentioned in the background art that when the wastewater is discharged, there are still some fine solid waste inside the device. The solid waste will cause blockage of the outlet, affecting the stability of the effluent and the long-term operational safety.

[0005] To solve the above problems, this utility model provides the following technical solution: a flotation phosphorus removal wastewater treatment device, comprising a treatment tank, an outlet, an anti-sludge structure, a filter screen, a connecting rod, and a drive source: the treatment tank has an outlet for effluent discharge; the anti-sludge structure covers the treatment tank on one side of the outlet, the anti-sludge structure includes a filter screen that is longitudinally slidably disposed on one side of the outlet, the filter screen has a rectangular frame on its periphery for fitting the filter screen and the treatment tank, the top of the filter screen is connected to a connecting rod, the connecting rod is designed in an "n" shape, the end of the connecting rod located on the outside of the treatment tank is provided with a drive source, the drive source is detachably connected to the outside of the treatment tank, and the drive source drives the connecting rod to cause the filter screen to slide up and down in the treatment tank.

[0006] Preferably, sliding grooves are provided on both sides of the treatment pool of the outlet, and the sliding grooves are symmetrically distributed along the longitudinal central axis of the outlet.

[0007] Preferably, two cleaning brushes are provided between adjacent sliding grooves, and the cleaning brushes are symmetrically distributed along the transverse central axis of the water outlet.

[0008] Preferably, the cleaning brush and the treatment tank are detachably connected, and the side of the cleaning brush away from the treatment tank abuts against the filter screen.

[0009] Preferably, the portion of the cleaning brush that abuts against the filter screen is a soft brush.

[0010] Preferably, the rectangular frame is connected to a sliding block that is slidably connected to the sliding groove at the location of the sliding groove.

[0011] Preferably, an air flotation phosphorus removal structure is detachably connected to the outside of the treatment tank, and the output end of the air flotation phosphorus removal structure is connected to a flexible hose that extends into the treatment tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This air flotation phosphorus removal wastewater treatment device connects a filter screen at the outlet to block larger debris, and a drive source to drive the filter screen to slide up and down in the treatment tank, and a connecting rod connecting the drive source and the filter screen. In use, the drive source drives the connecting rod to move the filter screen up and down, which blocks the outlet while reducing the phenomenon of siltation and blockage at the filter screen. At the same time, a sliding groove for the sliding block to slide and a cleaning brush for cleaning the filter screen are set in the treatment tank to further clean the filter screen and reduce the maintenance difficulty of the filter screen. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0015] Figure 3 This is a top view of the structure of this utility model;

[0016] Figure 4 For the present utility model Figure 3 A side view of the internal exploded structure at point A-A;

[0017] Figure 5 This is a side view of the internal structure of the treatment tank of this utility model.

[0018] In the picture:

[0019] 1. Treatment tank; 11. Outlet;

[0020] 2. Air flotation phosphorus removal structure;

[0021] 3. Anti-sludge structure; 31. Connecting rod; 32. Drive source; 33. Filter screen; 34. Sliding block;

[0022] 4. Sliding groove;

[0023] 5. Cleaning brush. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] like Figure 1-5 As shown, an air flotation phosphorus removal wastewater treatment device includes a treatment tank 1, an outlet 11, an anti-sludge structure 3, a filter screen 33, a connecting rod 31, and a drive source 32. The treatment tank 1 has an outlet 11 for effluent discharge. The treatment tank 1 is a tank that can store wastewater. The treatment tank 1 has a top-opening chamber for water storage. An outlet 11 for discharging treated wastewater is provided on one side of the treatment tank 1. The outlet 11 is connected to the inside of the treatment tank 1, and the extended outlet 11 is connected to a flow control valve to control whether to discharge water.

[0027] In order to reduce the probability of siltation and blockage at the outlet 11 during use, the anti-siltation structure 3 covers the treatment pool 1 on one side of the outlet 11. The anti-siltation structure 3 includes a filter screen 33, a connecting rod 31, and a drive source 32.

[0028] Specifically, the filter screen 33 is longitudinally slidably positioned on one side of the outlet 11. The horizontal and vertical side lengths of the filter screen 33 are both greater than the diameter of the outlet 11, used to cover the outlet 11 and reduce the probability of clogging at the outlet 11. The filter screen 33 has a rectangular frame around its periphery for it to fit against the treatment tank 1. The rectangular frame is made of stainless steel and is positioned to fit against one side of the treatment tank 1 and its inner wall. The filter screen 33 is located on the side of the rectangular frame furthest from the treatment tank 1. The filter screen 33 and the rectangular frame are fixedly attached. A connecting rod 31 is connected to the top of the filter screen 33. The connecting rod 31 and the rectangular frame inside the filter screen 33 are integrally molded. The connecting rod 31 has an "n" shape, with one side longer and the other shorter. Figure 1 and Figure 2 As shown, the bottom of the cavity of the connecting rod 31 abuts against the top of the treatment tank 1, at which point the filter screen 33 is positioned as shown. Figure 5At the lowest point shown, the connecting rod 31 is equipped with a drive source 32 at the end located outside the treatment tank 1. The drive source 32 is a hydraulic cylinder. In use, the output end of the drive source 32 and the shorter side of the connecting rod 31 are detachably connected by a flange and bolts. The drive source 32 pushes the connecting rod 31 to move the filter screen 33 up and down on the side of the outlet 11 inside the treatment tank 1. The drive source 32 and the outside of the treatment tank 1 are detachably connected. The drive source 32 drives the connecting rod 31 to make the filter screen 33 slide up and down inside the treatment tank 1.

[0029] The effect achieved by the entire embodiment is that when the sewage in the treatment tank 1 is drained after treatment, the drive source 32 is controlled by the control panel. At this time, the drive source 32 pushes the connecting rod 31 to move the filter screen 33 up and down on the side of the outlet 11 in the treatment tank 1. When the filter screen 33 moves up and down, some of the residual garbage inside it will be thrown out by the water flow, reducing the phenomenon of siltation and blockage of the filter screen 33 during use.

[0030] Example 2

[0031] like Figure 1-5 As shown, a flotation phosphorus removal wastewater treatment device has sliding grooves 4 on both sides of the treatment tank 1 at the outlet 11. The length of the sliding grooves 4 is less than the length of the filter screen 33. During use, the sliding grooves 4 limit the vertical movement distance of the anti-sludge structure 3. The specific length of the sliding grooves 4 needs to be selected according to the diameter of the outlet 11 and the height of the filter screen 33, so that the filter screen 33 always covers the outlet 11 when it moves. The sliding grooves 4 are symmetrically distributed along the longitudinal central axis of the outlet 11 to avoid the filter screen 33 from having too large a gap between it and the treatment tank 1 when it slides up and down, which would cause water to directly enter the outlet 11 and cause blockage.

[0032] Two cleaning brushes 5 are provided between adjacent sliding grooves 4. The overall thickness of the cleaning brushes 5 is the same as the thickness of the rectangular frame at the position of the filter screen 33, so as to avoid the cleaning brushes 5 affecting the up and down movement of the filter screen 33 during use. The cleaning brushes 5 are symmetrically distributed along the transverse central axis of the water outlet 11.

[0033] The cleaning brush 5 and the treatment tank 1 are detachably connected. The side of the cleaning brush 5 away from the treatment tank 1 abuts against the filter screen 33. Specifically, the part of the cleaning brush 5 that abuts against the filter screen 33 is a soft brush. When the filter screen 33 moves up and down, the soft brush of the cleaning brush 5 will clean the filter screen 33, further reducing the phenomenon of sludge accumulation and blockage in the filter screen 33 during protection.

[0034] A rectangular frame is located at the position of the sliding groove 4 and is connected to a sliding block 34 that is slidably connected to the sliding groove 4. The sliding groove 4 and the anti-sludge structure 3 are designed with a dovetail sliding connection. The sliding groove 4 is a groove shape with a dovetail-shaped cross-section, that is, wider at the top and narrower at the bottom. The sliding block 34 is a specially shaped object with a V-shaped bottom, which can be used in conjunction with the dovetail-designed sliding groove 4. The principle of the dovetail sliding connection is based on the geometric shape of the dovetail groove and the slider. Through the special shape of the dovetail groove and the slider, the slider can make linear motion in the dovetail groove. The above is the existing public technology, which will not be described in detail below.

[0035] A detachable flotation phosphorus removal structure 2 is connected to the outside of treatment tank 1. The output end of flotation phosphorus removal structure 2 is connected to a flexible hose extending into treatment tank 1. Through this hose, metal salt chemicals such as aluminum and iron salts are added to the wastewater, converting soluble phosphorus into phosphate precipitates. These precipitates are then carried to the surface by microbubbles, completing the separation process. This process comprises three key stages: chemical flocculation, bubble adhesion, and scum separation. It can remove 80%-95% of total phosphorus, and is particularly effective in treating wastewater containing colloidal phosphorus. Chemicals can be selected, such as commonly used polyaluminum chloride (PAC) and polyferric sulfate (PFS). The dosage needs to be dynamically adjusted according to the influent phosphorus concentration. The specific equipment configuration includes core components such as a dissolved air tank, release device, flocculation reaction zone, separation zone, and scum scraping system. These are existing publicly available technologies; simply select the appropriate model for use.

[0036] The effect achieved by the entire embodiment 2 is as follows: When in use, the wastewater to be treated is introduced into the treatment tank 1. At this time, the air flotation phosphorus removal structure 2 will add metal salt chemical agents such as aluminum salt and iron salt to the wastewater through the hose, so that the dissolved phosphorus is converted into phosphate precipitate. Then, microbubbles carry the flocs to float to the water surface to complete the separation. When in use, the length of the sliding groove 4 is less than the length of the filter screen 33. The sliding groove 4 limits the vertical movement distance of the anti-sludge structure 3. The specific length of the sliding groove 4 needs to be selected according to the diameter of the outlet 11 and the height of the filter screen 33, so that the filter screen 33 always covers the outlet 11 when it moves. The part of the cleaning brush 5 that abuts against the filter screen 33 is a soft brush. When the filter screen 33 moves up and down, the soft brush of the cleaning brush 5 will clean the filter screen 33, further reducing the phenomenon of sludge and blockage of the filter screen 33 during protection.

[0037] Working principle: When using this air flotation phosphorus removal wastewater treatment device, an external power supply is connected. First, the wastewater to be treated is introduced into the treatment tank 1. At this time, the air flotation phosphorus removal structure 2 will add metal salt chemical agents such as aluminum salt and iron salt into the wastewater through the hose, so that the dissolved phosphorus is converted into phosphate precipitate. Then, microbubbles carry the flocs to float to the water surface to complete the separation. After the wastewater in the treatment tank 1 is treated, when draining, the drive source 32 is controlled by the control panel. At this time, the drive source 32 pushes the connecting rod 31 to move the filter screen 33 up and down on one side of the outlet 11 in the treatment tank 1. When the filter screen 33 moves up and down, some of the residual garbage inside it will be thrown out by the water flow, reducing the phenomenon of siltation and blockage of the filter screen 33 during use. The sliding groove 4 prevents the gap between the filter screen 33 and the treatment tank 1 from being too large when the filter screen 33 slides up and down, which would cause the water to directly enter the outlet 11 and cause the outlet 11 to be blocked.

[0038] Secondly, since the length of the sliding groove 4 is less than the length of the filter screen 33, the vertical movement distance of the anti-sludge structure 3 is limited by the sliding groove 4 during use. The specific length of the sliding groove 4 needs to be selected according to the diameter of the outlet 11 and the height of the filter screen 33, so that the filter screen 33 always covers the outlet 11 when it moves. The part of the cleaning brush 5 that abuts against the filter screen 33 is a soft brush. When the filter screen 33 moves up and down, the soft brush of the cleaning brush 5 will clean the filter screen 33, further reducing the phenomenon of sludge and blockage in the filter screen 33 during protection, and finally completing the work of the air flotation phosphorus removal wastewater treatment device.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for the treatment of sewage by flotation for the removal of phosphorus, characterised in that, include: A treatment tank, which has an outlet for water discharge operations; An anti-sludge structure is provided, which covers the treatment tank on one side of the outlet. The anti-sludge structure includes a filter screen that is longitudinally slidably disposed on one side of the outlet. The filter screen has a rectangular frame on its periphery for fitting the filter screen and the treatment tank. A connecting rod is connected to the top of the filter screen. The connecting rod is designed in an "n" shape. A drive source is provided at the end of the connecting rod located on the outside of the treatment tank. The drive source is detachably connected to the outside of the treatment tank. The drive source drives the connecting rod to cause the filter screen to slide up and down within the treatment tank.

2. The device according to claim 1, wherein the device is characterized by: Sliding grooves are provided on the treatment pools on both sides of the outlet, and the sliding grooves are symmetrically distributed along the longitudinal central axis of the outlet.

3. The air flotation phosphorus removal wastewater treatment device according to claim 2, characterized in that: Two cleaning brushes are provided between adjacent sliding grooves, and the cleaning brushes are symmetrically distributed along the transverse central axis of the water outlet.

4. The air flotation phosphorus removal wastewater treatment device according to claim 3, characterized in that: The cleaning brush and the treatment tank are detachably connected, and the side of the cleaning brush away from the treatment tank abuts against the filter screen.

5. The air flotation phosphorus removal wastewater treatment device according to claim 4, characterized in that: The part of the cleaning brush that comes into contact with the filter screen is a soft brush.

6. The air flotation phosphorus removal wastewater treatment device according to claim 2, characterized in that: The rectangular frame is located at the position of the sliding groove and is connected to a sliding block that is slidably connected to the sliding groove.

7. The air flotation phosphorus removal wastewater treatment device according to claim 1, characterized in that: An air flotation phosphorus removal structure is detachably connected to the outside of the treatment tank. The output end of the air flotation phosphorus removal structure is connected to a flexible hose that extends into the treatment tank.

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