Thermal power generation water treatment device

Abstract

The utility model relates to the technical field of sewage treatment equipment, and discloses a thermal power generation water treatment device which comprises a wastewater treatment box, a top cover is detachably mounted at the top of the wastewater treatment box, and a filtering and collecting device is arranged at the upper end in the wastewater treatment box. The filtering and collecting device comprises a second shell and a first shell which are fixedly mounted on the inner walls of the front side and the rear side of the wastewater treatment box, wastewater of the power plant flows into the wastewater treatment box through a water inlet pipe, then the wastewater is preliminarily filtered through a filter screen plate, impurities are intercepted on the surface of the filter screen plate, and at the moment, a double-shaft motor is started to drive two sets of threaded rods to rotate; the threaded sliding block drives the cleaning plate and the cleaning brush to reciprocate on the surface of the filter screen plate, intercepted impurities are removed in time, the filter screen plate is effectively prevented from being blocked, the stable filtering effect is guaranteed, slag discharging openings in the two sides of the wastewater treatment box and the collecting box work cooperatively, the impurities swept down by the cleaning brush fall into the collecting box through the slag discharging openings, and centralized treatment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and in particular to a water treatment device for thermal power generation. Background Technology

[0002] Thermal power plants, or coal-fired power plants for short, are factories that use combustible materials (such as coal) as fuel to produce electricity. The wastewater generated by thermal power plants mainly includes ash flushing water, dust removal water, industrial wastewater, domestic sewage, acid and alkali waste liquids, and condenser cooling water drainage. Direct discharge of untreated thermal power plant wastewater will pollute water bodies, soil, and other environmental factors. Heavy metals in the wastewater will accumulate in the environment, causing long-term harm to ecosystems and human health. High salinity wastewater will lead to an increase in the salinity of receiving water bodies, affecting the survival of aquatic organisms. The discharge of organic matter and nutrients may cause eutrophication of water bodies, leading to the proliferation of algae and disrupting the aquatic ecological balance.

[0003] The applicant discovered through a search that a Chinese patent discloses "a water treatment device for a thermal power plant," with publication (announcement) number "CN 221460037". The patent, "U", mainly includes a filter box, a partition, and a discharge port. The partition is welded to the middle of the inner side of the filter box, and the discharge port is located on one side of the filter box. A spraying mechanism is installed on the top of the filter box, and a filtration mechanism is installed inside the discharge port. This water treatment device for thermal power plants filters flocculent matter in wastewater through a first filter screen inside the support frame. When too much flocculent matter clogs the first filter screen, the angle of the first filter screen is adjusted. When the first filter screen rotates 180 degrees, the water flow impacts the flocculent matter on the first filter screen, cleaning the flocculent matter attached to the first filter screen. However, the above technology relies on rotating the first filter screen and using water flow to impact and clean the flocculent matter. The cleaning effect may be limited by factors such as water flow speed and water volume. If the water flow is unstable, the cleaning effect is difficult to guarantee. Moreover, the cleaned flocculent matter is not collected and treated, which may lead to the accumulation of flocculent matter in the device, affecting the normal operation of the equipment. Therefore, we propose a water treatment device for thermal power plants. Utility Model Content

[0004] The purpose of this utility model is to provide a water treatment device for thermal power generation, in order to solve the problems in the above-mentioned technology that rely on rotating the first filter screen to clean flocculent matter by water flow impact. The cleaning effect may be limited by factors such as water flow speed and water volume. If the water flow is unstable, the cleaning effect is difficult to guarantee. Furthermore, if the cleaned flocculent matter is not collected and treated, it may accumulate in the device and affect the normal operation of the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wastewater treatment device for thermal power generation, comprising a wastewater treatment tank, a top cover detachably installed on the top of the wastewater treatment tank, and a water inlet pipe fixedly installed on the top of the top cover; a filter collection device is provided at the upper interior of the wastewater treatment tank, the filter collection device comprising a second housing and a first housing fixedly installed on the inner walls of the front and rear sides of the wastewater treatment tank; a dual-shaft motor fixedly installed in the middle of the interior of the first housing, and threaded rods fixedly installed at the output ends of the dual-shaft motor; slotted plates fixedly installed on the inner walls of the left and right sides of the wastewater treatment tank, below the first housing; a filter screen plate is engaged between the two sets of slotted plates; a fixed shaft is fixedly installed inside the second housing; threaded sliders are threadedly connected to the circumferential surfaces of the two sets of threaded rods; a cleaning plate is fixedly installed on one side of each set of threaded sliders; and a cleaning brush is fixedly installed at the bottom of each set of cleaning plates.

[0006] As a preferred embodiment, an outlet pipe is fixedly installed at the bottom left side of the wastewater treatment tank, and a one-way valve is fixedly installed on the outlet pipe. A dosing device and a purification device are provided at the bottom of the wastewater treatment tank.

[0007] As a preferred embodiment, the bottom of the cleaning brush is in contact with the surface of the filter screen plate, and the ends of the two sets of cleaning plates away from the threaded rods are slidably connected to the circumferential surface of the fixed shaft, with the threads on the surfaces of the two sets of threaded rods arranged in opposite directions.

[0008] As a preferred embodiment, the wastewater treatment tank has slag discharge ports on both sides above the slot plate, and collection boxes are fixedly installed on both sides of the outer surface of the wastewater treatment tank at the slag discharge ports.

[0009] As a preferred embodiment, the dosing device includes a medicine tank fixedly installed at the bottom of the right outer surface of the wastewater treatment tank. A metal pipe is fixedly installed on the top of the medicine tank via a pump body, with one end of the metal pipe extending into the interior of the medicine tank and the other end extending into the interior of the wastewater treatment tank. A liquid storage pipe is fixedly installed at the end of the metal pipe away from the medicine tank and inside the wastewater treatment tank. Multiple sets of equally spaced electric nozzles are fixedly installed on one side of the surface of the liquid storage pipe. A liquid filling port is opened at one end of the top of the medicine tank.

[0010] As a preferred embodiment, the purification device includes a guide plate fixedly installed inside the wastewater treatment tank and located at the bottom of the slot plate. The guide plate is inclined. A first fixing plate, a second fixing plate, and a third fixing plate are fixedly installed on the rear inner wall of the wastewater treatment tank from right to left. The tops of the first fixing plate and the third fixing plate are fixedly connected to the bottom of the guide plate. The bottom of the second fixing plate is fixedly connected to the inner bottom surface of the wastewater treatment tank. An activated carbon filter plate is fixedly installed between the first fixing plate and the second fixing plate. An ultrafiltration membrane sieve plate is fixedly installed between the second fixing plate and the third fixing plate.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. By setting up a filtration and collection device, the wastewater from the power plant flows into the wastewater treatment tank through the inlet pipe. The wastewater is then initially filtered by the filter screen, and impurities are trapped on the surface of the filter screen. At this time, the dual-shaft motor starts and drives two sets of threaded rods to rotate. Because their surface threads are opposite, the threaded slider will drive the cleaning plate and cleaning brush to reciprocate on the surface of the filter screen, which will remove the trapped impurities in time, effectively prevent the filter screen from clogging, and ensure stable filtration effect. The slag discharge ports on both sides of the wastewater treatment tank work in conjunction with the collection tank. The impurities swept down by the cleaning brush fall into the collection tank through the slag discharge port, which is convenient for centralized treatment and significantly reduces the frequency of manual cleaning.

[0013] 2. By setting up a dosing device and a purification device, the medicine tank stores bactericides and algaecides. The pump precisely controls the flow rate according to the actual needs of wastewater treatment, and delivers the medicine to the wastewater treatment tank through a metal pipe. Multiple sets of electric nozzles on the storage pipe spray the medicine evenly into the wastewater, promoting a full reaction between the medicine and the wastewater and improving treatment efficiency. The inclined guide plate guides the wastewater to flow orderly in the wastewater treatment tank, allowing it to flow sequentially through the activated carbon filter plate and the ultrafiltration membrane screening plate. The activated carbon filter plate, with its adsorption properties, adsorbs organic matter, pigments, odors, and some heavy metal ions in the wastewater. The ultrafiltration membrane screening plate, through screening, intercepts bacteria, colloids, and large molecular organic matter and other impurities. The two work together to deeply purify the wastewater and improve the quality of the effluent. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a front cross-sectional view of the present invention.

[0016] Figure 3 This is a schematic diagram of the internal structure of the wastewater treatment tank of this utility model;

[0017] Figure 4 This is a schematic diagram of the purification device structure of this utility model;

[0018] Figure 5 This is a schematic diagram of a portion of the filtration and collection device of this utility model;

[0019] Figure 6 This is a schematic diagram of the dosing device of this utility model.

[0020] In the diagram: 1. Wastewater treatment tank; 2. Filtration and collection device; 3. Dosing device; 4. Top cover; 5. Inlet pipe; 6. Purification device; 7. Outlet pipe; 8. Check valve; 201. First housing; 202. Second housing; 203. Dual-shaft motor; 204. Threaded rod; 205. Threaded slider; 206. Cleaning plate; 207. Cleaning brush; 208. Slag discharge port; 209. Collection tank; 210. Slotted plate; 211. Filter screen; 301. Medicine tank; 302. Pump body; 303. Metal pipe; 304. Liquid storage pipe; 305. Electric nozzle; 601. Guide plate; 602. First fixing plate; 603. Second fixing plate; 604. Third fixing plate; 605. Activated carbon filter plate; 606. Ultrafiltration membrane sieve plate. Detailed Implementation

[0021] 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.

[0022] Please see the appendix Figure 1 - Appendix Figure 3 and appendix Figure 5A wastewater treatment device for thermal power generation includes a wastewater treatment tank 1. A top cover 4 is detachably installed on the top of the wastewater treatment tank 1, and an inlet pipe 5 is fixedly installed on the top of the top cover 4. A filter collection device 2 is provided at the upper interior of the wastewater treatment tank 1. The filter collection device 2 includes a second housing 202 and a first housing 201 fixedly installed on the inner walls of the front and rear sides of the wastewater treatment tank 1. A dual-shaft motor 203 is fixedly installed in the middle of the interior of the first housing 201, and threaded rods 204 are fixedly installed at the output ends of both shaft motors 203. Threaded rods 204 are also fixedly installed on the inner walls of the left and right sides of the wastewater treatment tank 1, located within the first housing 201. The bottom of each set of slotted plates 210 is fixedly installed, and a filter screen plate 211 is snapped between the two sets of slotted plates 210. A fixed shaft is fixedly installed inside the second housing 202. Threaded sliders 205 are threadedly connected to the circumferential surfaces of the two sets of threaded rods 204. A cleaning plate 206 is fixedly installed on one side of each set of threaded sliders 205. A cleaning brush 207 is fixedly installed at the bottom of each set of cleaning plates 206. The top of the wastewater treatment tank 1 has a detachable top cover 4, which makes it convenient for staff to open the top cover 4 to inspect, maintain and replace the internal filter collection device 2 and other components, thus improving the maintainability of the equipment.

[0023] A water outlet pipe 7 is fixedly installed on the bottom left side of the wastewater treatment tank 1, and a one-way valve 8 is fixedly installed on the water outlet pipe 7. A dosing device 3 and a purification device 6 are provided at the bottom of the wastewater treatment tank 1. The one-way valve 8 installed on the water outlet pipe 7 can effectively prevent the backflow of the treated water in the wastewater treatment tank 1, ensure the one-way flow of water, avoid secondary pollution of the treated water, and ensure stable effluent quality.

[0024] The bottom of the cleaning brush 207 contacts the surface of the filter screen 211. The ends of the two sets of cleaning plates 206 away from the threaded rods 204 are slidably connected to the circumferential surface of the fixed shaft. The threads on the surfaces of the two sets of threaded rods 204 are arranged in opposite directions. The first housing 201 and the second housing 202 are fixedly installed on the inner wall of the wastewater treatment tank 1. At the same time, the ends of the cleaning plates 206 away from the threaded rods 204 are slidably connected to the circumferential surface of the fixed shaft. This structural design makes the filter collection device 2 more stable during operation, ensuring the normal operation of the cleaning work and reducing the shaking of the equipment during operation. The two ends of the dual-axis motor 203 rotate in the same direction, and the threads of the two sets of threaded rods 204 are opposite, driving the two sets of threaded sliders 205 to move in opposite directions on the surfaces of the two sets of threaded rods 204.

[0025] Slag discharge ports 208 are provided on both sides of the wastewater treatment tank 1 above the slot plate 210. Collection boxes 209 are fixedly installed on both sides of the outer surface of the wastewater treatment tank 1 at the slag discharge ports 208. A cleaning port and a door are provided on one bottom side of the collection box 209 to facilitate the unified treatment of collected impurities.

[0026] Specifically, after the power plant wastewater enters the wastewater treatment tank 1 through the inlet pipe 5, it is initially filtered by the filter screen 211 to trap impurities on the surface of the filter screen 211. The dual-shaft motor 203 drives the threaded rod 204 to rotate. Since the threads on the surfaces of the two sets of threaded rods 204 are set in opposite directions, the threaded slider 205 drives the cleaning plate 206 and the cleaning brush 207 to move back and forth on the surface of the filter screen 211. This can clean the impurities trapped on the filter screen 211 in a timely manner, avoid clogging of the filter screen 211, and ensure the continuity of the filtration effect. The slag discharge ports 208 on the left and right sides of the wastewater treatment tank 1 cooperate with the collection box 209. After the cleaning brush 207 cleans the impurities on the filter screen 211, the impurities can enter the collection box 209 through the slag discharge ports 208 for centralized treatment of impurities and reduce the frequency of manual cleaning.

[0027] Please see the appendix Figure 1 - Appendix Figure 4 and appendix Figure 6 The dosing device 3 includes a medicine tank 301 fixedly installed at the bottom of the right outer surface of the wastewater treatment tank 1. A metal pipe 303 is fixedly installed on the top of the medicine tank 301 via a pump body 302. One end of the metal pipe 303 extends into the interior of the medicine tank 301, and the other end extends into the interior of the wastewater treatment tank 1. A liquid storage pipe 304 is fixedly installed at the end of the metal pipe 303 away from the medicine tank 301 and inside the wastewater treatment tank 1. Multiple sets of electric nozzles 305 are fixedly installed on one side of the surface of the liquid storage pipe 304. A liquid filling port is opened at one end of the top of the medicine tank 301. The liquid filling port on the top of the medicine tank 301 facilitates the staff to replenish the medicine in the medicine tank 301, ensuring the continuous and stable operation of the dosing device 3.

[0028] The purification device 6 includes a guide plate 601 fixedly installed inside the wastewater treatment tank 1 and located at the bottom of the slot plate 210. The guide plate 601 is inclined. A first fixing plate 602, a second fixing plate 603, and a third fixing plate 604 are fixedly installed on the rear inner wall of the wastewater treatment tank 1 from right to left. The tops of the first fixing plate 602 and the third fixing plate 604 are fixedly connected to the bottom of the guide plate 601, and the bottom of the second fixing plate 603 is fixedly connected to the inner bottom surface of the wastewater treatment tank 1. An activated carbon filter plate is fixedly installed between the first fixing plate 602 and the second fixing plate 603. An ultrafiltration membrane sieve plate 606 is fixedly installed between the second fixed plate 603 and the third fixed plate 604. The first fixed plate 602, the second fixed plate 603, and the third fixed plate 604 are firmly installed on the inner wall of the wastewater treatment tank 1 and are respectively connected to the guide plate 601 and the bottom surface of the wastewater treatment tank 1, supporting and fixing the activated carbon filter plate 605 and the ultrafiltration membrane sieve plate 606, so that the structure of the purification device 6 is stable. The gaps formed between the first fixed plate 602, the second fixed plate 603, and the third fixed plate 604 and the wastewater treatment tank 1 and the guide plate 601 allow water to flow along a designated path.

[0029] Specifically, the medicine tank 301 stores bactericidal and algaecidal agents, and the pump body 302 can transport the agents in the medicine tank 301 through the metal pipe 303. It can accurately control the amount of agents delivered according to the wastewater treatment needs, ensuring that the appropriate amount of agents are added to the wastewater treatment tank 1. Multiple sets of electric nozzles 305 are distributed on the liquid storage pipe 304, which can evenly spray the agents on the wastewater in the wastewater treatment tank 1, so that the agents and wastewater can fully contact and react, improving the treatment efficiency. The guide plate 601 is set at an angle, which can guide the wastewater to flow in an orderly manner in the wastewater treatment tank 1, so that the wastewater passes through the activated carbon filter plate 605 and the ultrafiltration membrane sieve plate 606 in sequence. The activated carbon filter plate 605 can effectively adsorb organic matter, pigments, odors and some heavy metal ions in the wastewater by utilizing the adsorption properties of activated carbon. The ultrafiltration membrane sieve plate 606 intercepts bacteria, colloids, large molecular organic matter and other impurities through sieving. The combination of the two achieves deep purification of wastewater and improves the quality of effluent.

[0030] Working principle of this utility model: This utility model is a water treatment device for thermal power generation. Wastewater generated by thermal power generation flows into wastewater treatment tank 1 from inlet pipe 5. It is first pre-treated by the filter collection device 2 located at the upper end of the wastewater treatment tank 1. The dual-shaft motor 203 of the filter collection device 2 starts, driving the threaded rod 204 to rotate. Since the threads on the surface of the threaded rod 204 are opposite, the threaded slider 205 drives the cleaning plate 206 and the cleaning brush 207 to move back and forth on the surface of the filter screen plate 211 that is engaged with the slot plate 210, so as to clean the impurities intercepted on the filter screen plate 211 in time. The cleaned impurities enter the collection tank 209 through the slag discharge port 208. After the preliminary filtration is completed, the medicine tank 301 stores the bactericidal and algaecidal agent, and the pump body 302 pumps... The chemicals in the medicine tank 301 are extracted, transported through the metal pipe 303, and then sprayed into the wastewater through the evenly distributed electric nozzles 305 on the storage pipe 304, ensuring full contact between the chemicals and the wastewater. The treated wastewater flows orderly along the inclined guide plate 601, passing sequentially through the activated carbon filter plate 605 and the ultrafiltration membrane sieve plate 606. The activated carbon filter plate 605 uses its own adsorption properties to adsorb organic matter, pigments, odors, and some heavy metal ions in the wastewater. The ultrafiltration membrane sieve plate 606, through sieving, intercepts impurities such as bacteria, colloids, and large molecular organic matter, achieving deep purification of the wastewater. After a series of treatments, the water that meets the standards flows out from the outlet pipe 7 at the bottom left side of the wastewater treatment tank 1. At this point, the entire process is complete.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water treatment device for thermal power generation, comprising a wastewater treatment tank (1), characterized in that: The wastewater treatment tank (1) is detachably fitted with a top cover (4), and a water inlet pipe (5) is fixedly installed on the top of the top cover (4). A filter collection device (2) is provided at the upper interior of the wastewater treatment tank (1). The filter collection device (2) includes a second housing (202) and a first housing (201) fixedly installed on the inner walls of the front and rear sides of the wastewater treatment tank (1). A dual-axis motor (203) is fixedly installed in the middle of the interior of the first housing (201), and threaded rods (204) are fixedly installed at the output ends of both dual-axis motors (203). On the inner walls of the left and right sides of the wastewater treatment tank (1) and below the first housing (201), a slot plate (210) is fixedly installed. A filter screen plate (211) is snapped between the two sets of slot plates (210). A fixed shaft is fixedly installed inside the second housing (202). Threaded sliders (205) are threadedly connected to the circumferential surfaces of the two sets of threaded rods (204). A cleaning plate (206) is fixedly installed on one side of each of the two sets of threaded sliders (205). A cleaning brush (207) is fixedly installed at the bottom of each of the two sets of cleaning plates (206).

2. The water treatment device for thermal power generation according to claim 1, characterized in that: A water outlet pipe (7) is fixedly installed on the bottom left side of the wastewater treatment tank (1), and a one-way valve (8) is fixedly installed on the water outlet pipe (7). A dosing device (3) and a purification device (6) are provided at the bottom of the wastewater treatment tank (1).

3. The water treatment device for thermal power generation according to claim 1, characterized in that: The bottom of the cleaning brush (207) is in contact with the surface of the filter plate (211). The ends of the two sets of cleaning plates (206) away from the threaded rod (204) are slidably connected to the circumferential surface of the fixed shaft. The threads on the surfaces of the two sets of threaded rods (204) are arranged in opposite directions.

4. A water treatment device for thermal power generation according to claim 1, characterized in that: The wastewater treatment tank (1) has slag discharge ports (208) through openings on both sides of the left and right surfaces above the slot plate (210), and collection boxes (209) are fixedly installed on both sides of the outer surface of the wastewater treatment tank (1) at the slag discharge ports (208).

5. A water treatment device for thermal power generation according to claim 2, characterized in that: The dosing device (3) includes a medicine tank (301) fixedly installed at the bottom of the right outer surface of the wastewater treatment tank (1). A metal pipe (303) is fixedly installed on the top of the medicine tank (301) via a pump body (302). One end of the metal pipe (303) extends into the interior of the medicine tank (301), and the other end extends into the interior of the wastewater treatment tank (1). A liquid storage pipe (304) is fixedly installed at the end of the metal pipe (303) away from the medicine tank (301) and inside the wastewater treatment tank (1). Multiple sets of electric nozzles (305) are fixedly installed on one side of the surface of the liquid storage pipe (304). A liquid filling port is opened at one end of the top of the medicine tank (301).

6. A water treatment device for thermal power generation according to claim 2, characterized in that: The purification device (6) includes a guide plate (601) fixedly installed inside the wastewater treatment tank (1) and located at the bottom of the slot plate (210). The guide plate (601) is inclined. A first fixing plate (602), a second fixing plate (603), and a third fixing plate (604) are fixedly installed on the rear inner wall of the wastewater treatment tank (1) from right to left. The tops of the first fixing plate (602) and the third fixing plate (604) are fixedly connected to the bottom of the guide plate (601). The bottom of the second fixing plate (603) is fixedly connected to the inner bottom surface of the wastewater treatment tank (1). An activated carbon filter plate (605) is fixedly installed between the first fixing plate (602) and the second fixing plate (603). An ultrafiltration membrane sieve plate (606) is fixedly installed between the second fixing plate (603) and the third fixing plate (604).

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