Iron oxide wastewater recycling device

Abstract

The utility model discloses an iron oxide wastewater recycling device, including the sediment tank, the upper end of this sediment tank is the open form, and the bottom of sediment tank is set to funnel shape, and the bottom is provided with the water outlet pipe, the sediment tank still install the sediment unit of a plurality of rows up and down, and every sediment unit includes two symmetrical sediment side plates of setting, and two sediment side plates correspond constitute the sediment tank of V shape. First, a plurality of sediment units are arranged in the sediment tank in the device, the sediment unit is provided with the sediment tank of V shape, after the distribution of wastewater in the sediment tank, the sedimentation of iron oxide particles is realized through the setting of a plurality of sediment tanks, and the sedimentation efficiency can be greatly improved. Iron oxide particles finally fall in the sediment tank, and the structure is clever and reasonable.

Description

Technical Field

[0001] This utility model relates to the field of iron oxide preparation technology, specifically to an iron oxide wastewater recycling device. Background Technology

[0002] In existing technologies, iron oxide wastewater is a high-concentration pollutant wastewater generated during the production of iron oxide pigments. Its main components are iron oxide (Fe2O3), iron hydroxide [Fe(OH)3], and other iron oxide or hydroxide particles. Iron oxide is an important industrial raw material that can be used to manufacture pigments such as iron red and iron yellow, or magnetic materials, catalysts, and building materials. Due to the high iron oxide content in the wastewater, recycling and reusing this type of wastewater can not only reduce environmental pollution but also achieve resource reuse. Furthermore, the treated water can also be recycled, saving water resources and resulting in significant economic and environmental benefits.

[0003] There are many common solutions for treating iron oxide wastewater in the existing technology. For example, solid-liquid separation can be used, such as common sedimentation separation and centrifugal solid-liquid separation, which can be used for the initial wastewater treatment. Plate and frame filter press can also be used for separation, which can be used for the final thorough separation. Alternatively, common filtration methods can be used to separate the iron oxide particles, leaving large iron oxide particles. In addition, more advanced magnetic separation methods can be used to adsorb and separate iron oxide particles, and the structural design is also very reasonable.

[0004] The existing wastewater treatment structure for iron oxide, such as the "Iron Oxide Dye Wastewater Treatment Sludge Recycling Device" disclosed in Publication (Announcement) No. CN203112624U, not only allows the treated wastewater to meet discharge standards, but also allows the sludge separated by sedimentation to be reused in the production of anti-rust paint after mechanical dewatering. Moreover, the device has a simple structure, low manufacturing investment, low operating cost, good treatment effect, safe and convenient operation, and can achieve zero sludge discharge, avoiding secondary pollution to the environment and playing a positive role in environmental protection.

[0005] For example, the "A device for recycling iron oxide powder wastewater by acid regeneration cooling" disclosed in CN218539323U achieves complete recycling and reuse of iron oxide red water in the acid regeneration process pipeline, which greatly reduces the cost of auxiliary treatment of iron oxide powder wastewater.

[0006] The above technical solutions employ different methods to achieve the recycling of iron oxide wastewater, recovering both iron oxide and water resources. However, the most common and effective existing technology is still solid-liquid separation through sedimentation, which is the simplest and most efficient method. It does not require numerous or complex equipment and processes, and solid-liquid separation can be achieved directly using sedimentation, saving equipment costs. However, the only problem is that solid-liquid separation through sedimentation is inefficient, requiring a long waiting time, which does not improve sedimentation efficiency. In addition, the recovery of iron oxide particles after sedimentation is also quite troublesome. Usually, it is necessary to recover the iron oxide particles at the bottom of the sedimentation tank first, and then recover the water, leading to subsequent accumulation and making it cumbersome to use.

[0007] Therefore, in order to solve the above problems, it is necessary to develop a reasonably structured iron oxide wastewater recycling device that can effectively improve work efficiency and quality. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for recycling and utilizing iron oxide wastewater; the technical solution is as follows:

[0009] A device for recycling iron oxide wastewater includes a sedimentation tank with an open top and a funnel-shaped bottom. The bottom of the sedimentation tank is equipped with a water outlet pipe. The sedimentation tank is also equipped with several rows of sedimentation units. Each sedimentation unit includes two symmetrically arranged sedimentation side plates, which correspond to form a V-shaped sedimentation tank.

[0010] Each row of sedimentation units is evenly spaced, and the positions of adjacent rows of sedimentation units are staggered. The width of the sedimentation units is also set accordingly, so that adjacent rows of sedimentation units overlap in the vertical direction.

[0011] Furthermore, the included angle between the two sedimentation side plates is set to 120-150°; the angle between the two sedimentation side plates determines the size of the sedimentation tank in the middle position. In this device, the angle between the two sedimentation side plates is set to 120-150°, which can better achieve the sedimentation of iron oxide particles without leaving too much water in the tank.

[0012] Furthermore, a water pump and a solenoid valve are installed on the water outlet pipe at the bottom of the sedimentation tank; the water pump and solenoid valve in this device are existing technologies and can fully realize the purpose of water pumping and switching.

[0013] Furthermore, the sedimentation unit in the sedimentation tank is provided in at least three rows, with one row of two adjacent rows having three sedimentation units and the other row having two sedimentation units; and the sedimentation side plates of the sedimentation units near the side walls of the sedimentation tank are fixed to the side walls of the sedimentation tank.

[0014] Furthermore, each sedimentation unit is also equipped with a discharge pipe, which is installed at the bottom of the sedimentation tank and fixed at the lower end of the two sedimentation side plates. The discharge pipe is also equipped with evenly distributed feed holes, which are connected to the sedimentation tank. The discharge pipe extends from the front end of the sedimentation tank and is connected to an external sand pump after extending from the sedimentation tank.

[0015] The iron oxide particles precipitated in the sedimentation tank enter the discharge pipe through the feed hole, and then are extracted and recycled by an external sand pump.

[0016] Furthermore, a transverse moving mechanism is installed at the rear of the sedimentation tank. The position of the transverse moving mechanism corresponds to the position of the sedimentation unit inside the sedimentation tank. The main shaft of the transverse moving mechanism passes through the side wall of the sedimentation tank and extends into the sedimentation tank of the sedimentation unit. A transverse push plate is also installed on the main shaft of the transverse moving mechanism. The size and shape of the transverse push plate are adapted to the sedimentation tank.

[0017] The transverse pusher plate moves accordingly in the sedimentation tank under the action of the transverse moving mechanism, thereby pushing the precipitated iron oxide particles in the sedimentation tank to move.

[0018] Furthermore, each sedimentation tank is equipped with a lateral movement mechanism, which is configured as a hydraulic mechanism, a pneumatic mechanism, or an electric push rod mechanism.

[0019] Beneficial effects: This utility model has the following beneficial effects:

[0020] 1) In this device, a number of sedimentation units are first set up in the sedimentation tank. Each sedimentation unit is equipped with a V-shaped sedimentation tank. After the wastewater is distributed in the sedimentation tank, the iron oxide particles are settled through the many sedimentation tanks, which can greatly improve the sedimentation efficiency. The iron oxide particles eventually fall into the sedimentation tank. The structure is cleverly and reasonably designed.

[0021] 2) In this device, there are many rows of sedimentation units in the sedimentation tank, and the sedimentation units in adjacent rows have overlapping areas. Therefore, the wastewater can be accelerated to settle in the sedimentation tank, and most of the iron oxide particles can be settled as much as possible to prevent a lot of iron oxide particles from falling to the bottom of the sedimentation tank due to the existence of large gap areas, and to minimize the loss of large iron oxide particles.

[0022] 3) In this device, a discharge pipe is also installed at the lower end of each sedimentation unit. The discharge pipe is connected to the sedimentation tank by a feed hole. In addition, a sand pump is installed outside. The iron oxide particles settled in the sedimentation tank can be pumped to the outside by the sand pump to realize the recycling of iron oxide particles. The water in the wastewater can also be recycled through the water outlet pipe at the lower end. The structure is reasonably designed.

[0023] 4) In order to further extract iron oxide particles in the sedimentation tank, a transverse push plate is installed in the sedimentation tank and a transverse moving mechanism is installed outside the sedimentation tank. The transverse moving mechanism drives the transverse push plate to move in the sedimentation tank, thereby pushing the iron oxide particles in the sedimentation tank. In conjunction with the external sand pump, the iron oxide particles are pushed from the feed hole into the discharge pipe. The device can extract the sediment in the sedimentation tank without dead angles. The structure is ingenious and reasonable. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the present utility model;

[0025] Figure 2 This is a structural diagram of the precipitation unit in this utility model;

[0026] Figure 3 This is a diagram showing the position of the transverse push plate in this utility model;

[0027] Figure 4 This is a structural diagram of the transverse push plate in this utility model;

[0028] Figure 5 for Figure 3 AA section view

[0029] The components include: sedimentation tank 1, water outlet pipe 2, sedimentation unit 3, sedimentation side plate 4, sedimentation tank 5, water pump 6, solenoid valve 7, discharge pipe 8, feed hole 9, sand pump 10, transverse moving mechanism 11, main shaft 12, and transverse push plate 13. Detailed Implementation

[0030] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented under the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0031] like Figure 1As shown, an iron oxide wastewater recycling device includes a sedimentation tank 1. The upper end of the sedimentation tank 1 is open, and the bottom of the sedimentation tank 1 is funnel-shaped and has an outlet pipe 2. The sedimentation tank 1 is also equipped with several rows of sedimentation units 3. Each sedimentation unit 3 includes two symmetrically arranged sedimentation side plates 4. The two sedimentation side plates 4 correspond to form a V-shaped sedimentation tank 5.

[0032] Each row of sedimentation units 3 is evenly spaced, and the positions of two adjacent rows of sedimentation units 3 are staggered. The width of the sedimentation units 3 is also set accordingly, so that there is an overlapping area between the two adjacent rows of sedimentation units 3 in the vertical direction.

[0033] like Figure 2 As shown, the included angle between the two sedimentation side plates 4 is set to 120-150°; a water pump 6 and a solenoid valve 7 are installed on the water outlet pipe 2 at the bottom of the sedimentation tank 1.

[0034] The sedimentation unit 3 in the sedimentation tank 1 is provided with at least three rows. In two adjacent rows of sedimentation units 3, one row is provided with three sedimentation units 3 and the other row is provided with two sedimentation units 3. The sedimentation side plates 4 of the sedimentation units 3 near the side walls of the sedimentation tank 1 are fixed to the side walls of the sedimentation tank 1.

[0035] like Figure 3 As shown, each sedimentation unit 3 is also equipped with a discharge pipe 8. The discharge pipe 8 is installed at the bottom of the sedimentation tank 5 and fixed at the lower end of the two sedimentation side plates 4. The discharge pipe 8 is also equipped with evenly distributed feed holes 9, which are connected to the sedimentation tank 5 through the feed holes 9. The discharge pipe 8 extends from the front end of the sedimentation tank 1, and all the discharge pipes 8 extend from the sedimentation tank 1 and are connected to the external sand pump 10.

[0036] like Figure 4 As shown, the iron oxide particles precipitated in the sedimentation tank 5 enter the discharge pipe 8 through the feed hole 9, and are then extracted and recycled by the external sand pump 10.

[0037] like Figure 5 As shown, a transverse moving mechanism 11 is also installed at the rear of the sedimentation tank 1. The position of the transverse moving mechanism 11 corresponds to the position of the sedimentation unit 3 inside the sedimentation tank 1. The main shaft 12 of the transverse moving mechanism 11 passes through the side wall of the sedimentation tank 1 and extends into the sedimentation tank 5 of the sedimentation unit 3. A transverse push plate 13 is also installed on the main shaft 12 of the transverse moving mechanism 11. The size and shape of the transverse push plate 13 are adapted to the sedimentation tank 5.

[0038] The transverse push plate 13 moves in the sedimentation tank 5 under the action of the transverse moving mechanism 11, thereby pushing the iron oxide particles precipitated in the sedimentation tank 5 to move. Each sedimentation tank 5 is equipped with a transverse moving mechanism 11, and the transverse moving mechanism 11 is set as a hydraulic mechanism, a pneumatic mechanism, or an electric push rod mechanism.

[0039] The technical principle of this device is based on sedimentation. Solid-liquid separation is achieved through the precipitation of iron oxide particles in wastewater, allowing for the recovery and reuse of the iron oxide particles. Simultaneously, the separated water can also be recycled. Existing technologies typically only involve setting up a sedimentation tank to achieve sedimentation, for example... Figure 1 In conventional sedimentation tanks, wastewater can be directly placed into the tank and allowed to settle, but this process is time-consuming and inefficient. This device, however, utilizes multiple sedimentation units 3 to increase the settling of iron oxide particles. The device features a bottom outlet pipe 2, equipped with a solenoid valve 7 and a water pump 6. The solenoid valve 7 is a conventional control valve, while the water pump 6 extracts wastewater. The key feature of this device is the inclusion of multiple sedimentation units 3 within the sedimentation tank. Each sedimentation unit 3 is specifically designed with two symmetrical sedimentation side plates 4. Figure 2 As shown, the area between the two sedimentation side plates 4 constitutes the sedimentation tank 5. The sedimentation tank 5 has a V-shaped structure and contains many sedimentation units 3. Each row of sedimentation units 3 is evenly spaced, and the vertically overlapping sedimentation units 3 are correspondingly overlapped. This design is to ensure that most of the iron oxide particles settle in the sedimentation tank 5, reducing the loss of iron oxide particles. After the iron oxide wastewater is completely placed into the sedimentation tank, the wastewater fills the entire sedimentation tank. The iron oxide particles will gradually settle and sink under the action of gravity. However, due to the presence of many sedimentation units 3, the iron oxide particles will eventually settle in the sedimentation tank 5. Since the sedimentation units 3 are evenly distributed and overlap vertically, the vast majority of the iron oxide particles in the wastewater will settle in the sedimentation tank 5. Of course, some will also settle in the sedimentation tank 5. A small portion of the iron oxide particles fall to the bottom of the sedimentation tank, but the impact is minimal. Because of the numerous sedimentation units 3, the iron oxide particles in the wastewater can settle in a very short time, falling into the sedimentation tank 5. This effectively increases the sedimentation area and reduces the settling time, thus improving sedimentation efficiency. After the iron oxide particles have settled, the wastewater must first be discharged through the outlet pipe 2 at the bottom of the sedimentation tank. Since most of the iron oxide particles are in the sedimentation tank 5, the water inside the sedimentation tank can be discharged through the outlet pipe 2. During this process, the water discharge speed should not be too fast to avoid significant disturbance to the water. After the water is discharged, the iron oxide particles in the sedimentation tank 5 can be recovered.

[0040] In this device, the recovery of iron oxide particles is achieved through a discharge pipe 8 installed on the sedimentation unit 3. Each sedimentation unit 3 has a discharge pipe 8 installed at the bottom of its sedimentation tank 5. The discharge pipe 8 is fixed to the bottom of the sedimentation side plate 4 and has an inlet hole 9. The discharge pipe 8 is connected to the sedimentation area through the inlet hole 9, and extends outside the sedimentation tank. A sand pump 10 is connected to the outside of the tank. Under the action of the sand pump 10, the iron oxide particles in the sedimentation tank 5 can be extracted. Although there may be water in the sedimentation tank 5, this is not a problem, as it only achieves the initial separation of iron oxide particles from wastewater. The technical objective of extracting the iron oxide particles from the sedimentation tank 5 is fully achievable. Furthermore, the discharge pipe 8 has many evenly distributed inlet holes 9, making it relatively easy to extract the iron oxide particles from the sedimentation tank 5. However, the above technical solution still has some flaws. Even with many feed holes 9 on the feed pipe, there are still some dead zones, making it impossible to extract all the iron oxide particles in the sedimentation tank 5. Therefore, the technical solution of this device also sets a transverse push plate in the sedimentation tank 5 and a transverse moving mechanism 11 on the rear side wall of the sedimentation tank. The transverse moving mechanism 11 can drive the transverse push plate 13 to move in the sedimentation tank 5. Therefore, when the sand pump 10 extracts the iron oxide particles in the sedimentation tank 5, the transverse moving mechanism 11 can drive the transverse push plate 13 to move in the sedimentation tank 5, thereby pushing the iron oxide particles in the sedimentation tank 5 flat. This ensures that all the sediment in the sedimentation tank 5 is extracted through the cooperation of the sand pump 10, the discharge pipe 8, and the transverse push plate 13, without creating dead zones. The structural design is quite ingenious and reasonable, which can improve the extraction efficiency of sediment.

[0041] The water pump 6 and solenoid valve 7 in this device are both existing technologies. The water pump 6 has a common pump body structure, while the solenoid valve 7 can specifically adopt the QDF ball-type solenoid directional valve produced by Shanghai Qizhong Valve Manufacturing Co., Ltd. In addition, the lateral movement mechanism 11 of this device is also a structure in the prior art. It can be implemented by a hydraulic mechanism, a pneumatic mechanism or an electric device. Specifically, it can adopt the piston motor type hydraulic mechanism produced by Jiangsu Hengli Hydraulic Co., Ltd. In addition, considering factors such as space occupation and ease of installation, the DTA series electric push rod structure produced by Wuxi Zhijun Machinery Factory can be used, which can save installation space and facilitate use.

[0042] The above-described specific embodiments are merely preferred embodiments of this utility model and are not intended to limit the implementation of this utility model or the scope of the claims. All equivalent changes and modifications made in accordance with the scope of protection of this utility model patent application should be included within the scope of this utility model patent application.

Claims

1. A device for recycling iron oxide wastewater, characterized in that: The settling tank (1) is open at the top and funnel-shaped at the bottom. A water outlet pipe (2) is provided at the bottom and a horizontal moving mechanism (11) is installed at the rear. The settling tank (1) is also equipped with several rows of settling units (3). Each settling unit (3) includes two symmetrically arranged settling side plates (4). The two settling side plates (4) form a V-shaped settling tank (5). Each row of sedimentation units (3) is evenly spaced, and the positions of two adjacent rows of sedimentation units (3) are staggered, and the width of the sedimentation units (3) is set accordingly, so that there is an overlapping area between the two adjacent rows of sedimentation units (3) in the vertical direction. A water pump (6) and a solenoid valve (7) are installed on the water outlet pipe (2); Each sedimentation unit (3) is also equipped with a discharge pipe (8). The discharge pipe (8) is installed at the bottom of the sedimentation tank (5) and fixed at the lower end of the two sedimentation side plates (4). The discharge pipe (8) is also equipped with evenly distributed feed holes (9). The feed holes (9) are connected to the sedimentation tank (5) respectively. The discharge pipe (8) extends from the front end of the sedimentation box (1) respectively. All the discharge pipes (8) are connected to the external sand pump (10) after extending from the sedimentation box (1). The iron oxide particles precipitated in the sedimentation tank (5) enter the discharge pipe (8) through the feed hole (9), and then the iron oxide particles are extracted and recycled by the external sand pump (10). The position of the transverse moving mechanism (11) corresponds to the position of the sedimentation unit (3) in the sedimentation tank (1), and the main shaft (12) of the transverse moving mechanism (11) passes through the side wall of the sedimentation tank (1) and extends into the sedimentation tank (5) of the sedimentation unit (3). A transverse push plate (13) is also installed on the main shaft (12) of the transverse moving mechanism (11), and the size and shape of the transverse push plate (13) are adapted to the sedimentation tank (5). The transverse push plate (13) moves in the sedimentation tank (5) under the action of the transverse moving mechanism (11), thereby pushing the iron oxide particles precipitated in the sedimentation tank (5) to move.

2. The iron oxide wastewater recycling device according to claim 1, characterized in that: The included angle between the two sedimentation side plates (4) is set to 120-150°.

3. The iron oxide wastewater recycling device according to claim 1, characterized in that: The sedimentation unit (3) in the sedimentation tank (1) is provided in at least three rows. In the two adjacent rows of sedimentation units (3), one row is provided with three sedimentation units (3) and the other row is provided with two sedimentation units (3). The sedimentation side plates (4) in the sedimentation units (3) near the two side walls of the sedimentation tank (1) are fixed to the side walls of the sedimentation tank (1).

4. The iron oxide wastewater recycling device according to claim 1, characterized in that: Each sedimentation tank (5) is equipped with a lateral movement mechanism (11), and the lateral movement mechanism (11) is configured as a hydraulic mechanism, a pneumatic mechanism, or an electric push rod mechanism.

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