Coal sewage treatment device

Abstract

The utility model provides a coal sewage treatment device which is characterized in that the top of a filter tower is communicated with a feed port, the side wall of the filter tower is also fixedly connected with a first connecting column, a second connecting column and a third connecting column, the first connecting column is sleeved with a first hollow shaft, the first hollow shaft is fixedly connected with a coarse filter layer, and the second connecting column is sleeved with a second hollow shaft; the second hollow shaft is fixedly connected with the fine filtering layer. The utility model aims to solve the problem that meshes of a filter plate are easy to block when sludge, coal ash and water in coal sewage are separated and filtered. The problem that a filtering layer needs to be frequently cleaned and replaced after blockage is solved, the device is particularly suitable for filtering coal-containing sewage generated by washing a coal conveying gallery in a coal port enterprise so as to prevent the sewage from polluting the ground, and meanwhile coal slime can be conveniently collected and cleaned.

Description

Technical Field

[0001] This utility model relates to the field of chemical wastewater treatment technology, specifically to a coal wastewater treatment device. Background Technology

[0002] In coal port operations, the washing of coal conveyor corridors is a necessary step to ensure normal production. At Hubei Jingzhou Coal Port Co., Ltd., during coal conveyor corridor washing operations, the washing water is discharged directly to the ground through pipes. Because the initial design did not consider collecting the water in a collection well and channeling it to a sedimentation tank, on-site modifications would not only be costly but also significantly impact production. Direct discharge of coal-containing wastewater to the ground causes muddy conditions, pollutes the environment, and increases the difficulty and cost of cleanup. To solve this problem, there is an urgent need to design a device that can effectively treat coal-containing wastewater, achieving purified discharge of wastewater and convenient collection of coal sludge without affecting production. Currently, existing wastewater treatment devices suffer from complex structures, high costs, and difficulties in replacing and reusing filter elements, failing to meet the company's need for rapid and low-cost treatment of coal conveyor corridor washing water. Utility Model Content

[0003] This invention aims to solve the problem of filter plate mesh clogging during the separation and filtration of sludge, coal ash, and water in coal-fired wastewater. It also eliminates the need for frequent cleaning and replacement of the filter layer after clogging.

[0004] To solve the above problems, this application provides the following technical solution:

[0005] A coal-fired wastewater treatment device includes a filter tower, the top of which is connected to a feed inlet.

[0006] The filter tower sidewall is also fixedly connected to the first connecting column, the second connecting column, and the third connecting column.

[0007] The first connecting column is fitted with a first hollow shaft, and the first hollow shaft is fixedly connected to the coarse filter layer.

[0008] The second connecting column is fitted with a second hollow shaft, which is fixedly connected to the fine filter layer.

[0009] The bottom of the coarse filter layer is fixedly connected to a first spring, the bottom of the first spring contacts a first fixing block, the first fixing block is fixedly connected to the inner wall of the filter tower, the coarse filter layer extends through to the outside of the first window of the filter tower, and a first sponge is provided at the top of the first window.

[0010] A first recovery tank is provided below the opening at the end of the coarse filter layer, and a first vibrator is fixedly connected to the side wall of the coarse filter layer.

[0011] The coarse filter layer has an inclination angle of 30° to 45°, and is made of metal mesh with a wire diameter of 1 to 2 mm and a mesh opening diameter of 3 to 5 mm.

[0012] The bottom of the fine filter layer is fixedly connected to a second spring, the bottom of the second spring contacts a second fixing block, the second fixing block is fixedly connected to the inner wall of the filter tower, the fine filter layer extends through to the outside of the second window of the filter tower, and a second sponge is provided at the top of the second window.

[0013] A second recovery tank is provided below the opening at the end of the fine filter layer, and a second vibrator is fixedly connected to the side wall of the fine filter layer.

[0014] The fine filter layer has an inclination angle of 20° to 35° and is made of sponge.

[0015] The third connecting column is fitted with a third hollow shaft, which is fixedly connected to the adsorption layer. The adsorption layer extends through to the outside of the third window of the filter tower, and a third recovery tank is provided below the opening at the end of the adsorption layer.

[0016] The filter tower is equipped with a water valve at the bottom, with a cotton cloth fixed above the water valve inlet and a water tank connected to the water valve outlet.

[0017] The filter tower is equipped with an overflow pipe at the bottom, and a level gauge is connected to the bottom of the overflow pipe. The bottom wall of the filter tower is also connected to an overflow pipe, and an oil tank is located below the overflow pipe.

[0018] Preferably, the inclination angle of the adsorption layer is 10°~20°, and the adsorption layer is activated carbon.

[0019] Preferably, cotton cloth is used to filter and absorb oily impurities.

[0020] Preferably, the first sponge prevents the coarse filter layer from impacting the top sidewall of the first window. The first spring prevents the coarse filter layer from impacting the bottom sidewall of the first window.

[0021] Preferably, the second sponge prevents the fine filter layer from impacting the top sidewall of the second window. The second spring prevents the fine filter layer from impacting the bottom sidewall of the second window.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. This utility model, by setting a first vibrator and a second vibrator to remove surface insoluble substances on the inclined fine filter layer and coarse filter layer in a timely manner into the first recovery tank and the second recovery tank, will greatly improve the filtration efficiency of the filter tower, reduce the number of times the coarse filter layer of the filter tower needs to be cleaned, and extend the service life of the coarse filter layer and the fine filter layer.

[0024] 2. After the activated carbon in the adsorption layer is poisoned, an overflow pipe and a level gauge are installed in the filter tower to reverse clean and separate the oil and oil-water mixture that has penetrated to the bottom of the filter tower, thus avoiding manual cleaning of the tower.

[0025] 3. This device effectively filters coal sludge from coal-containing wastewater, ensuring that the treated water discharged onto the ground does not cause pollution. It also facilitates regular cleaning of the coal sludge collected within the device by maintenance personnel. Furthermore, it utilizes simple, inexpensive, and reusable filter media, reducing operating costs. This device is particularly suitable for coal port enterprises to filter coal-containing wastewater generated from washing coal conveyor corridors, preventing wastewater from polluting the ground and facilitating the collection and cleaning of coal sludge.

[0026] 4. Through the multi-layer filtration structure of coarse filtration layer, fine filtration layer and adsorption layer, it can effectively treat coal slurry, impurities, organic matter and odor in coal-containing wastewater, so that the treated water will not cause pollution when discharged to the ground, thus protecting the environment.

[0027] 5. This device is designed to effectively collect coal slurry generated during the filtration process. The inclined structure of the coarse filter layer metal wire mesh makes it easy for maintenance workers to directly collect coal slurry. The operation is simple and convenient, reducing the labor intensity of workers.

[0028] 6. This invention is low-cost and reusable. It uses a sponge as the filter element in the fine filtration layer. Sponges are inexpensive and reusable. When the sponge's filtration efficiency decreases, it can simply be removed for cleaning or replacement, significantly reducing operating costs. Simultaneously, the activated carbon adsorption layer can also be periodically replaced, achieving reuse. Attached Figure Description

[0029] Figure 1 This is a simplified structural diagram of the filter tower of this utility model.

[0030] Figure 2 yes Figure 1 A schematic diagram of the local structural connections at the dashed line.

[0031] Reference numerals: Filter tower 1, feed port 101, coarse filter layer 2, first sponge 201, first spring 202, second sponge 203, second spring 204, first hollow shaft 205, second hollow shaft 206, third hollow shaft 207, first connecting column 208, second connecting column 2081, third connecting column 2082, first vibrator 3, second vibrator 301, first recovery tank 4, fine filter layer 5, second recovery tank 6, adsorption layer 7, third recovery tank 8, first fixing block 9, second fixing block 10, cotton cloth 11, water valve 12, overflow pipe 13, oil tank 1301, level gauge 14. Detailed Implementation

[0032] It should be understood that the terms "top," "sidewall," "outer side," "end," "below," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Unless otherwise specified, the "fixed connection" described in this application refers to conventional methods such as bonding.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected," "equipped with," "featured," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection, a direct connection, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, the description of this invention is merely a preferred embodiment and is not intended to limit the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

[0035] The model number selected in this patent is merely for ease of explanation and is not intended to restrict the use of this particular instrument model.

[0036] Preferably, the first vibrator 3 is purchased from Hongyun Company as an adjustable vibrator small vibration motor, model three-phase 380V, power 15W, excitation force 10KG and its matching power supply circuit.

[0037] Preferably, the sponge is purchased from Hangmei Sponge Company, with a model of 35ppi medium pore size and a thickness of 20cm x 20cm x 5cm;

[0038] Preferably, the activated carbon was purchased from Suzhou Tanxuanfeng Activated Carbon Company, and the model is 25kg coal-based columnar 8.0mm.

[0039] Example 1

[0040] like Figures 1-2 As shown, a coal wastewater treatment device includes a filter tower 1, with a feed inlet 101 connected to the top of the filter tower 1.

[0041] The side wall of filter tower 1 is also fixedly connected to a first connecting column 208, a second connecting column 2081, and a third connecting column 2082.

[0042] The first connecting column 208 is fitted with a first hollow shaft 205, and the first hollow shaft 205 is fixedly connected to the coarse filter layer 2.

[0043] The second connecting column 2081 is fitted with a second hollow shaft 206, and the second hollow shaft 206 is fixedly connected to the fine filter layer 5.

[0044] The bottom of the coarse filter layer 2 is fixedly connected to the first spring 202, the bottom of the first spring 202 contacts the first fixing block 9, the first fixing block 9 is fixedly connected to the inner wall of the filter tower 1, the coarse filter layer 2 extends through to the outside of the first window of the filter tower 1, and the top of the first window is provided with a first sponge 201.

[0045] A first recovery tank 4 is provided below the opening at the end of the coarse filter layer 2, and a first vibrator 3 is fixedly connected to the side wall of the coarse filter layer 2.

[0046] The coarse filter layer 2 has an inclination angle of 30°~45°. The coarse filter layer 2 is a metal mesh with a wire diameter of 1~2mm and a mesh opening diameter of 3~5mm. The bottom of the fine filter layer 5 is fixedly connected to a second spring 204, and the bottom of the second spring 204 contacts a second fixing block 10. The second fixing block 10 is fixedly connected to the inner wall of the filter tower 1. The fine filter layer 5 extends through to the outside of the second window of the filter tower 1, and a second sponge 203 is provided at the top of the second window.

[0047] A second recovery tank 6 is provided below the opening at the end of the fine filter layer 5, and a second vibrator 301 is fixedly connected to the side wall of the fine filter layer 5.

[0048] The fine filter layer 5 has an inclination angle of 20°~35° and is made of sponge.

[0049] The third connecting column 2082 is fitted with a third hollow shaft 207, which is fixedly connected to the adsorption layer 7. The adsorption layer 7 extends through to the outside of the third window of the filter tower 1, and a third recovery tank 8 is provided below the opening at the end of the adsorption layer 7.

[0050] A water valve 12 is provided at the bottom of the filter tower 1. A cotton cloth 11 is fixed above the inlet of the water valve 12, and the outlet of the water valve 12 is connected to a water tank 1201.

[0051] The bottom of the filter tower 1 is provided with an overflow pipe 13, and the bottom of the overflow pipe 13 is connected to a level gauge 14. The bottom wall of the filter tower 1 is also connected to the overflow pipe 13, and the oil tank 1301 is located below the overflow pipe 13. The overflow pipe 13 is an inverted flat-truncated conical hollow tube.

[0052] Preferably, the inclination angle of the adsorption layer 7 is 10°~20°, and the adsorption layer 7 is activated carbon.

[0053] Preferably, cotton cloth 11 is used to filter and absorb oily impurities.

[0054] Preferably, the first sponge 201 prevents the coarse filter layer 2 from impacting the top sidewall of the first window. The first spring 202 prevents the coarse filter layer 2 from impacting the bottom sidewall of the first window.

[0055] Preferably, the second sponge 203 prevents the fine filter layer 5 from impacting the top sidewall of the second window. The second spring 204 prevents the fine filter layer 5 from impacting the bottom sidewall of the second window.

[0056] Preferably, the first vibrator 3 and the second vibrator 301 are the same.

[0057] Preferably, the first hollow shaft 205, the second hollow shaft 206 and the third hollow shaft 207 are exactly the same;

[0058] Preferably, the first connecting post 208, the second connecting post 2081 and the third connecting post 2082 are completely identical;

[0059] Preferably, the inner diameter of the first hollow shaft 205 is larger than the outer diameter of the first connecting post 208, so that the first hollow shaft 205 can vibrate freely when vibrating.

[0060] Preferably, the first fixing block 9 and the second fixing block 10 are tilted at an angle of 30° to 35°, so that the residual filtrate overflowing onto the first fixing block 9 and the second fixing block 10 can flow to the corresponding lower filtration layer.

[0061] The operating method of the device is as follows:

[0062] Open the feed port 101 at the top of the filter tower 1, and inject the coal wastewater into the filter tower 1 through the feed port 101. The particles containing the coal wastewater are intercepted by the coarse filter layer 2, and under the vibration of the first vibrator 3, they flow down the screen into the first recovery tank 4.

[0063] After the coarse filter layer 2 filters out large solid particles, the wastewater passes through the layered sponge of the fine filter layer 5 to filter out small particles of fly ash, clay, and minerals. Under the vibration of the second vibrator 301, it flows along the screen into the second recovery tank 6.

[0064] After filtering insoluble matter such as fly ash, suspended solids, and sludge in the fine filter layer 5, an oil-water mixture is obtained. The oil in the oil-water mixture consists of organic light oil from the coal.

[0065] The oil-water mixture is purified by adsorbing heavy and light oils in adsorption layer 7 to obtain water. However, the adsorption efficiency is reduced because the free fatty acids in the coal wastewater chemically combine with the surface of the activated carbon.

[0066] Long-term operation of the adsorption layer 7 can lead to poisoning or failure of the activated carbon. In this case, the bottom of the filter tower 1 can be cleaned. When the surface of the adsorption layer 7 is blocked by sticky adsorption, staff can regularly inspect and clean the organic oil stains on the surface of the adsorption layer 7 with ethanol.

[0067] The overflow pipe 13 is 1m above the water surface at the bottom of filter tower 1. When an oil film appears on the water surface at the bottom of filter tower 1, it indicates that adsorption layer 7 is poisoned and the oil cannot be completely adsorbed. It overflows directly into the bottom of the tower and mixes with the water. The unadsorbed light oil and organic matter float on the water surface and form an oil film. The oil and water can be separated by following these steps: First, replace the activated carbon layer of adsorption layer 7, and then clean it according to the following steps:

[0068] Step S1: Close water valve 12, open overflow pipe 13, turn on first vibrator 3 and second vibrator 301. When level gauge 14 shows that the oil-water mixture is equal to 1m, overflow pipe 13 starts to release oil. Open overflow pipe 13 and the oil film flows into oil tank 1301 through overflow pipe 13. After 5~8 minutes, close overflow pipe 13 and open water valve 12 to release water.

[0069] Step S2: When the water level displayed by the level gauge 14 is 0.2~0.3m, close the water valve 12 and open the overflow pipe 13.

[0070] Repeat steps S1 to S2 3-5 times until the oil film at the bottom of the tower is cleaned.

[0071] After cleaning, close the overflow pipe 13 and open the water valve 12 to continue normal filtration operation of the filter tower 1.

[0072] The water received in the water valve contains sulfate and is sent to the subsequent water purification process. The water purification process here is not an improvement of this invention and will not be described in detail here.

Claims

1. A coal-fired wastewater treatment device, comprising a filter tower (1), characterized in that, The top of the filter tower (1) is connected to a feed port (101). The filter tower (1) is also fixedly connected to the first connecting column (208), the second connecting column (2081) and the third connecting column (2082). The first connecting column (208) is fitted with a first hollow shaft (205), and the first hollow shaft (205) is fixedly connected to the coarse filter layer (2). The second connecting column (2081) is fitted with a second hollow shaft (206), and the second hollow shaft (206) is fixedly connected to the fine filter layer (5).

2. The coal-fired wastewater treatment device according to claim 1, characterized in that, The bottom of the coarse filter layer (2) is fixedly connected to the first spring (202), the bottom of the first spring (202) contacts the first fixing block (9), the first fixing block (9) is fixedly connected to the inner wall of the filter tower (1), the coarse filter layer (2) extends through to the outside of the first window of the filter tower (1), and the top of the first window is provided with a first sponge (201).

3. The coal-fired wastewater treatment device according to claim 1, characterized in that, The first recovery tank (4) is provided below the end opening of the coarse filter layer (2), and the first vibrator (3) is fixedly connected to the side wall of the coarse filter layer (2).

4. The coal-fired wastewater treatment device according to claim 1, characterized in that, The coarse filter layer (2) has an inclination angle of 30°~45°. The coarse filter layer (2) is a metal mesh with a wire diameter of 1~2mm and a mesh opening diameter of 3~5mm.

5. A coal-fired wastewater treatment device according to claim 1, characterized in that, The bottom of the fine filter layer (5) is fixedly connected to the second spring (204), the bottom of the second spring (204) contacts the second fixing block (10), the second fixing block (10) is fixedly connected to the inner wall of the filter tower (1), the fine filter layer (5) extends through to the outside of the second window of the filter tower (1), and the top of the second window is provided with a second sponge (203).

6. The coal-fired wastewater treatment device according to claim 1, characterized in that, A second recovery tank (6) is provided below the end opening of the fine filter layer (5), and a second vibrator (301) is fixedly connected to the side wall of the fine filter layer (5).

7. A coal-fired wastewater treatment device according to claim 1, characterized in that, The fine filter layer (5) has an inclination angle of 20°~35° and is made of sponge.

8. A coal-fired wastewater treatment device according to claim 1, characterized in that, The third connecting column (2082) is fitted with a third hollow shaft (207), and the third hollow shaft (207) is fixedly connected to the adsorption layer (7). The adsorption layer (7) extends through to the outside of the third window of the filter tower (1), and a third recovery tank (8) is provided below the end opening of the adsorption layer (7).

9. A coal-fired wastewater treatment device according to claim 1, characterized in that, The filter tower (1) is equipped with a water valve (12) at the bottom. A cotton cloth (11) is fixed above the inlet of the water valve (12), and the outlet of the water valve (12) is connected to a water tank (1201).

10. A coal-fired wastewater treatment device according to claim 1, characterized in that, The filter tower (1) is provided with an overflow pipe (13) at the bottom, and a level gauge (14) is connected to the bottom of the overflow pipe (13). The bottom wall of the filter tower (1) is connected to the overflow pipe (13), and an oil tank (1301) is located below the overflow pipe (13).

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