Thermal power plant wastewater treatment device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a thermal power plant wastewater treatment device which comprises a wastewater treatment barrel, a liquid inlet is formed in the top of the wastewater treatment barrel, a liquid discharge pipe is arranged at the bottom of the wastewater treatment barrel, and a filtering structure is arranged in the wastewater treatment barrel. The filtering structure comprises a rotating disc, a fixing frame arranged on the rotating disc, a filtering barrel detachably arranged in the fixing frame and a driving motor used for driving the rotating disc to rotate, a plurality of water outlet holes are evenly distributed in the barrel wall of the filtering barrel, and two or more barrel bodies are arranged in the filtering barrel in a sleeved mode; the filter barrel and the barrel body on the outermost layer are sleeved at intervals, every two adjacent barrel bodies are sleeved at intervals, filter holes are uniformly formed in the barrel wall of each barrel body, the hole diameters of the filter holes of each barrel body are sequentially reduced from inside to outside, and the liquid inlet is located above the filter barrel. The problems that an existing wastewater treatment device is slow in filtering and prone to blockage are solved, and the wastewater filtering efficiency is greatly improved through the multi-layer filtering structure and the rotating disc.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a wastewater treatment device for a thermal power plant. Background Art

[0002] At present, thermal power plants are factories that use combustibles as fuel to produce electricity. Its basic production process is that when the fuel is burned, it heats water to generate steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy, and then the turbine drives the generator to rotate, converting the mechanical energy into electrical energy. They all generate electricity by using the pressure drop in the process of high-temperature, high-pressure steam or gas passing through the turbine to become low-pressure air or condensed water. In the process of burning combustibles to produce electricity, a large amount of power generation wastewater will be generated. Since most of the combustibles are used in coal-fired power generation, the wastewater contains a large amount of residual impurities of sulfide metals. At present, thermal power plants only use simple filtering methods to filter the wastewater and then discharge it. If the wastewater is not treated cleanly, it is very easy to pollute the water source and affect the water quality ecological environment. At the same time, a large amount of water is needed for power generation every day. The generated wastewater is directly discharged without being treated and reused, resulting in a large amount of water resources being wasted.

[0003] The existing patent announcement number CN217323700U discloses a thermal power plant wastewater recycling device, which relates to the field of thermal power plants, including a wastewater treatment box, a desulfurization tank, a protection box, an electrolysis box, and a stirring assembly arranged inside the protection box for desulfurization and mixing of wastewater. The wastewater treatment box is provided with a desulfurization tank, the bottom of the wastewater treatment box is fixedly connected to the protection box, and one side of the outer end of the wastewater treatment box is fixedly connected to the electrolysis box, and the stirring assembly includes a servo motor, a stirring shaft, and a stirring blade. This device avoids the problem of only discharging the wastewater after preliminary filtration through a simple filtering treatment method, which is easy to pollute the water source and affect the water quality ecological environment. At the same time, through the coordinated use of the electrolysis box, the anode plate and the cathode plate, it avoids the problem of direct discharge of the generated wastewater without treating it cleanly for reuse, resulting in a large amount of waste of water resources.

[0004] However, when the above-mentioned wastewater treatment device is treating wastewater, the filter plate and the impurity removal filter element are fixed. When the wastewater falls on the filter plate and the impurity removal filter element, a large amount of impurities and residues will remain on the filter plate and the impurity removal filter element. If the filter plate and the impurity removal filter element are blocked, the wastewater cannot be effectively treated, which greatly reduces the wastewater treatment efficiency of the treatment device. The staff needs to frequently disassemble and clean the filter plate and the impurity removal filter element, which is time-consuming and labor-intensive. Utility Model Content

[0005] Therefore, in view of the above problems, the utility model proposes a wastewater treatment device for a thermal power plant.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a wastewater treatment device for a thermal power plant, comprising a wastewater treatment barrel, a liquid inlet is provided on the top of the wastewater treatment barrel, a liquid discharge pipe is provided on the bottom of the wastewater treatment barrel, a filtering structure is provided in the wastewater treatment barrel, the filtering structure comprises a turntable, a fixing frame arranged on the turntable, a filter barrel detachably arranged in the fixing frame, and a driving motor for driving the turntable to rotate, a barrel wall of the filter barrel is evenly distributed with a plurality of water outlet holes, the filter barrel is sleeved with more than two barrel bodies, the filter barrel and the outermost barrel body and two adjacent barrel bodies are sleeved at intervals, filtering holes are evenly provided on the barrel wall of each barrel body, the aperture of the filtering holes of each barrel body decreases from the inside to the outside, and the liquid inlet is located above the filter barrel.

[0007] As a further improvement, the distance between the filter barrel and the outermost barrel body and between two adjacent barrel bodies is greater than 1 cm.

[0008] As a further improvement, the fixing frame comprises limiting columns arranged at intervals along the circumference of the turntable, the limiting columns are provided with support blocks supporting the bottom of the filter barrel, and the outer wall of the filter barrel is provided with a first limiting groove cooperating with the limiting columns.

[0009] As a further improvement, the filter barrel and each barrel body are provided with ears.

[0010] As a further improvement, the barrel body is provided with two, including an inner barrel body and an outer barrel body.

[0011] As a further improvement, the inner walls of the filter barrel and the outer barrel body are both provided with limit strips, the outer wall of the inner barrel body is provided with a second limit groove cooperating with the limit strip, and the inner bottom of the filter barrel and the outer barrel body is provided with a support strip.

[0012] As a further improvement, the liquid discharge pipe is sequentially connected to a desulfurization tank and an electrolytic box.

[0013] As a further improvement, an activated carbon catalyst box is provided between the desulfurization tank and the electrolysis box.

[0014] By adopting the above technical scheme, the beneficial effects of the utility model are as follows: the utility model forms a multi-layer filtering structure by arranging more than two barrel bodies in the filter barrel, and a gap is maintained between the filter barrel and the outermost barrel body and between two adjacent barrel bodies, which helps to maintain the permeability of the filter holes on the barrel body. The above structure cooperates with the turntable to use centrifugal force to throw water out, greatly accelerating the wastewater filtration speed; the setting of the support block enables the interval between the bottom of the filter barrel and the turntable to increase the water outlet area of ​​the filter barrel; further, the design of the limit bar and the second limit groove enables the filter barrel and the barrel body to rotate during rotation. It can be stably positioned to avoid damage caused by vibration or deviation; further, through the set desulfurization tank, the filtered wastewater flows into the desulfurization tank for desulfurization treatment to remove sulfides in the wastewater; further, the wastewater after desulfurization treatment flows into the electrolysis box, and the heavy metal ions and other harmful substances in the wastewater are further removed through electrolysis; further, the setting of the activated carbon catalytic box further improves the efficiency and quality of wastewater treatment. Through the adsorption of activated carbon, organic matter and some inorganic matter in the wastewater can be removed, ensuring that the final discharged wastewater meets environmental protection standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the filtering structure of the utility model.

[0017] Figure 3 yes Figure 2 Enlarged view of point A.

[0018] Figure 4 It is a schematic diagram of the explosion structure of the filter structure of the utility model.

[0019] icon:

[0020] 1. Wastewater treatment barrel; 11. Liquid inlet; 12. Drain pipe; 21. Turntable; 221. Limit column; 222. Support block; 23. Drive motor; 24. Filter barrel; 241. Water outlet; 242. First limit groove; 25. Inner barrel body; 26. Outer barrel body; 271. Limit bar; 272. Second limit groove; 273. Support bar; 28. Ear; 3. Desulfurization tank; 4. Electrolysis box; 5. Activated carbon catalyst box. DETAILED DESCRIPTION

[0021] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0022] refer to Figure 1-4The present embodiment provides a wastewater treatment device for a thermal power plant, including a wastewater treatment barrel 1, wherein a liquid inlet 11 is provided at the top of the wastewater treatment barrel 1, a liquid discharge pipe 12 is provided at the bottom of the wastewater treatment barrel 1, and a filtering structure is provided in the wastewater treatment barrel 1, wherein the filtering structure includes a turntable 21, a fixing frame arranged on the turntable 21, a filter barrel 24 detachably arranged in the fixing frame, and a driving motor 23 for driving the turntable 21 to rotate.

[0023] The fixing frame includes limiting columns 221 arranged at intervals along the circumference of the turntable 21, and the limiting columns 221 are provided with support blocks 222 supporting the bottom of the filter barrel 24. The outer wall of the filter barrel 24 is provided with a first limiting groove 242 that cooperates with the limiting columns 221. A plurality of water outlet holes 241 are evenly distributed on the barrel wall of the filter barrel 24. Two barrel bodies are sequentially sleeved in the filter barrel 24, including an inner barrel body 25 and an outer barrel body 26 that are sleeved with each other. The inner walls of the filter barrel 24 and the outer barrel body 26 are both provided with limiting strips 271, and the outer wall of the inner barrel body 25 is provided with a second limiting groove that cooperates with the limiting strip 271. 272, and the length of the limiting strip 271 is greater than the depth of the second limiting groove 272, and the filter barrel 24 and the outer barrel body 26 are provided with support strips 273 at the bottom. Through the setting of the limiting strip 271 and the support strip 273, the filter barrel 24 and the outer barrel body 26, and the outer barrel body 26 and the inner barrel body 25 are spaced and sleeved. In this example, the above-mentioned spacing is 2 cm, and filter holes are evenly arranged on the barrel walls of the inner barrel body 25 and the outer barrel body 26, and the aperture of the filter hole of the inner barrel body 25 is larger than the aperture of the filter hole of the outer barrel body 26, and the liquid inlet 11 is located above the filter barrel 24.

[0024] The utility model forms a multi-layer filtering structure by arranging more than two barrel bodies in the filter barrel 24. A gap is maintained between the filter barrel 24 and the outermost barrel body and between two adjacent barrel bodies, which helps to maintain the permeability of the filter holes on the barrel body. The above structure cooperates with the turntable 21 to use centrifugal force to throw water out, greatly accelerating the wastewater filtration speed; the setting of the support block 222 enables the bottom of the filter barrel 24 to be spaced from the turntable 21, thereby increasing the water outlet area of ​​the filter barrel 24; further, the design of the limit bar 271 and the second limit groove 272 enables the filter barrel 24 and the barrel body to be stably positioned during rotation, avoiding damage caused by vibration or displacement.

[0025] In this embodiment, the filter barrel 24 and each barrel body are provided with ears 28 for lifting, so as to facilitate the removal and installation of the filter barrel 24 and the barrel body.

[0026] In practical applications, the number of barrels can be specifically set according to actual needs, and is not limited to two. The filter barrel 24 and the outermost barrel and the two adjacent barrels are spaced apart, and the spacing is greater than 1 cm. At the same time, in order to ensure the stability between the filter barrel 24 and each barrel, the filter barrel 24 and the bottom of each barrel are fixed on the turntable by the same bolt.

[0027] In this embodiment, the drainage pipe 12 is connected to the desulfurization tank 3 and the electrolytic box 4 in sequence, and an activated carbon catalyst box 5 is arranged between the desulfurization tank 3 and the electrolytic box 4. Through the arranged desulfurization tank 3, the filtered wastewater flows into the desulfurization tank 3 for desulfurization treatment to remove sulfides in the wastewater. The wastewater after desulfurization treatment flows into the electrolytic box 4 again, and heavy metal ions and other harmful substances in the wastewater are further removed by electrolysis. The arrangement of the activated carbon catalyst box 5 further improves the efficiency and quality of wastewater treatment. Through the adsorption of activated carbon, organic matter and some inorganic matter in the wastewater can be removed, ensuring that the wastewater finally discharged meets environmental protection standards.

[0028] In practical applications, the aperture of the water outlet hole 241 of the filter barrel 24 may also be smaller than the aperture of the filter hole of the outer barrel body 26 to ensure that the wastewater is filtered more finely when passing through the filter barrel 24 .

[0029] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A wastewater treatment device for a thermal power plant, comprising a wastewater treatment barrel, a liquid inlet is provided at the top of the wastewater treatment barrel, and a liquid discharge pipe is provided at the bottom of the wastewater treatment barrel, characterized in that: A filtering structure is provided in the wastewater treatment barrel, and the filtering structure includes a turntable, a fixing frame arranged on the turntable, a filter barrel detachably arranged in the fixing frame, and a driving motor for driving the turntable to rotate. A plurality of water outlet holes are evenly distributed on the barrel wall of the filter barrel, and more than two barrel bodies are sleeved in the filter barrel. The filter barrel and the outermost barrel body and two adjacent barrel bodies are sleeved at intervals. Filter holes are evenly provided on the barrel wall of each barrel body, and the aperture of the filter hole of each barrel body decreases from the inside to the outside. The liquid inlet is located above the filter barrel.

2. A thermal power plant wastewater treatment device according to claim 1, characterized in that: The distance between the filter barrel and the outermost barrel body and between two adjacent barrel bodies is greater than 1 cm.

3. A thermal power plant wastewater treatment device according to claim 1, characterized in that: The fixing frame comprises limiting columns arranged at intervals along the circumference of the turntable, the limiting columns are provided with supporting blocks for supporting the bottom of the filter barrel, and the outer wall of the filter barrel is provided with a first limiting groove matched with the limiting columns.

4. A thermal power plant wastewater treatment device according to claim 1, characterized in that: The filter barrel and each barrel body are provided with ears.

5. A thermal power plant wastewater treatment device according to claim 1, characterized in that: The barrel body is provided with two, including an inner barrel body and an outer barrel body.

6. A thermal power plant wastewater treatment device according to claim 5, characterized in that: The inner walls of the filter barrel and the outer barrel body are both provided with limiting strips, the outer wall of the inner barrel body is provided with a second limiting groove matched with the limiting strip, and the filter barrel and the outer barrel body are provided with supporting strips at the bottom.

7. A thermal power plant wastewater treatment device according to claim 1, characterized in that: The liquid discharge pipe is connected with the desulfurization tank and the electrolysis box in sequence.

8. A thermal power plant wastewater treatment device according to claim 7, characterized in that: An activated carbon catalyst box is arranged between the desulfurization tank and the electrolysis box.

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