Green low-carbon liquid enhanced evaporation equipment capable of being used in low-temperature weather

Abstract

The utility model provides green low-carbon liquid enhanced evaporation equipment capable of being used in low-temperature weather, which comprises a water suction pump, an underground heat-preservation aeration tank, a solar heating device, a heating air supply device and a microporous aeration device, and a solar heating pipe of the solar heating device and the microporous aeration device are arranged in the underground heat-preservation aeration tank. The waste water is heated by solar energy, aeration treatment is carried out, the evaporation capacity and the evaporation efficiency are greatly improved, after steam is condensed, formed evaporation condensate water is recycled, and the requirements of actual production are met.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a green and low-carbon liquid enhanced evaporation device that can be used in low-temperature weather. Background Art

[0002] At present, uranium mining and metallurgical enterprises encounter problems such as insufficient evaporation efficiency of evaporation pools and inability to treat wastewater in a timely manner during normal production processes or during the process of expanding production capacity. When the wastewater generated during the production process exceeds the treatment capacity, the excess wastewater will have potential pollution risks. The research of this project will enhance the radioactive waste treatment technology of my country's uranium mining and metallurgical enterprises, promote the increase in my country's uranium mining capacity, further ensure the sustainable development of my country's uranium mining and metallurgical enterprises, and protect human health and the environment.

[0003] In-situ leaching uranium mining does not require the establishment of uranium tailings ponds or waste rock dumps, and the surface vegetation is less damaged during the mining and smelting process. It is called "green uranium mining technology". However, the main method for treating in-situ leaching mine process wastewater is natural evaporation, which requires the establishment of evaporation pools that are not available in conventional mines. Evaporation pools are used to store and treat large amounts of radioactive waste liquid generated during the in-situ leaching process. They use the physical phenomenon of natural evaporation to achieve the non-radioactive medium water in the evaporation pool waste liquid to escape into the atmosphere in the form of water vapor, and the non-volatile radioactive nuclides remain in the solid pool mud. However, natural evaporation is seriously affected by changes in seasons, climate, weather, etc., especially in winter when the liquid surface freezes and the evaporation rate is extremely low. It is necessary to build large-scale evaporation pools for storage. The large area occupied by the evaporation pool will bring pressure on land acquisition. The natural evaporation of the original evaporation pool by enterprises cannot meet the increasing industrial needs. At the same time, wastewater evaporation is also a waste of water resources.

[0004] To this end, further research and design of batch evaporation treatment equipment and methods for radioactive waste liquid are needed to meet actual production needs and save water resources. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a green and low-carbon liquid enhanced evaporation equipment that can be used in low temperature weather. It designs an underground thermal insulation aeration tank to guide radioactive wastewater into the ground for treatment, and uses solar energy to heat the wastewater and perform aeration treatment, which greatly improves the evaporation amount and evaporation efficiency. The evaporated condensed water is recycled to meet the actual production needs and save water resources.

[0006] The purpose of the utility model is to provide a green and low-carbon liquid enhanced evaporation device that can be used in low-temperature weather, which includes a water pump, an underground thermal insulation aeration tank, a solar heating device, a heating and air supply device and a microporous aeration device, and also includes a control unit.

[0007] The underground thermal insulation aeration tank is arranged under the ground surface, and a preheating tank and an aeration tank are respectively arranged, and the two are separated by an inner tank wall.

[0008] A steam exhaust fan is arranged near the top of the aeration tank, which is connected to the condenser pipe, and the air outlet of the steam exhaust fan is aimed at the condenser pipe. The middle section of the condenser pipe is placed inside the preheating tank.

[0009] The condenser is communicated with the condensation water pool.

[0010] The aeration tank is provided with a solar heating tube of a solar heating device and a microporous aeration device.

[0011] The solar heating device comprises a solar heating tube, a solar panel and a circulating water control circuit. The solar panel is placed in a sunny place on the ground.

[0012] The microporous aeration device comprises a plurality of aeration tubes which are arranged in parallel or in a mesh. A plurality of aeration holes are arranged on the aeration tubes.

[0013] The green and low-carbon liquid enhanced evaporation equipment of the utility model which can be used in low-temperature weather has at least the following advantages:

[0014] (1) The utility model can be used for green and low-carbon liquid enhanced evaporation equipment under low-temperature weather. It can perform liquid enhanced evaporation under low-temperature weather conditions in the north, and use solar energy in the local natural environment to treat wastewater in the evaporation pool in a green and low-carbon manner, that is, use local solar energy to assist in enhanced evaporation to treat wastewater generated by uranium mines, and use preheated wastewater to condense the evaporated water vapor, and the condensed water is recycled. This method uses solar energy heating to maintain the temperature of the wastewater to be treated, and then uses microporous aeration to expand the efficient evaporation under low-temperature conditions in the north, mainly to expand the lower limit of evaporation and expand the evaporation area of ​​the liquid surface, that is, to control the low-temperature water in the evaporation pool within the temperature range that can be efficiently evaporated, and finally make it into a green and low-carbon liquid enhanced evaporation equipment under low-temperature weather conditions in the north through microporous aeration.

[0015] (2) The utility model uses microporous aeration under the action of solar energy to accelerate the evaporation rate of water. At the same time, the evaporated water vapor is condensed by preheating wastewater, and the condensed water is recycled, thereby improving the efficiency of solar energy utilization and generating condensed water for recycling. It has good economy, rationality and application prospects. Compared with the natural evaporation of wastewater in an evaporation pool under low temperature conditions, the equipment system can greatly increase the amount of evaporated wastewater and greatly reduce the area occupied by the construction of the evaporation pool, thus solving the problem of wastewater evaporation and water resource utilization during the low temperature freezing period in the north.

[0016] (3) The utility model takes into account the influence of water temperature and water depth on water evaporation, and adds an automatic control system to achieve automatic control of water temperature and water depth, ensure efficient use of solar energy, and reduce fan energy consumption. The equipment adopts an automatic control system to achieve automation of the operation process.

[0017] (4) The utility model can be used as a green and low-carbon liquid enhanced evaporation device under low temperature weather conditions, and can achieve an evaporation capacity of 2-6 times higher than the summer evaporation capacity of the same water surface evaporation pool under low temperature conditions in the north, and an increase of more than 30 times under freezing conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model shows a structural schematic diagram of a green and low-carbon liquid enhanced evaporation device that can be used in low-temperature weather.

[0019] Description of Figure Numbers

[0020] 1- Water pump;

[0021] 2-Underground thermal insulation aeration tank;

[0022] 3- Solar heating device;

[0023] 4- Heating and air supply device;

[0024] 5- Microporous aeration device;

[0025] 6-Double-layer suspension frame;

[0026] 201- insulation layer;

[0027] 202-steam exhaust fan;

[0028] 203- condenser;

[0029] 204- condensation pool;

[0030] 205-preheating pool;

[0031] 206- aeration tank;

[0032] 207-Water outlet;

[0033] 301-Solar heating tube;

[0034] 302-Solar panels;

[0035] 501- aeration pipe;

[0036] 401- fan;

[0037] 402-heating box;

[0038] 4021-Heating wire. DETAILED DESCRIPTION

[0039] The present invention will be described in detail below through specific implementation modes, and the features and advantages of the present invention will become clearer and more explicit with these descriptions.

[0040] A green and low-carbon liquid enhanced evaporation device that can be used in low-temperature weather includes a water pump 1, an underground heat-insulating aeration tank 2, a solar heating device 3, a heating and air supply device 4, a microporous aeration device 5, and a control unit.

[0041] The underground thermal insulation aeration tank 2 is arranged below the ground surface, and a preheating tank 205 and an aeration tank 206 are arranged respectively, and the two are separated by an inner tank wall. An insulation layer 201 is arranged outside the underground thermal insulation aeration tank 2. Figure 1 shown.

[0042] The water outlet of the pump 1 is connected to the water inlet of the preheating tank 205 to pump water into the preheating tank 205 of the underground thermal insulation aeration tank 2. The pump 1 is preferably arranged above the ground surface.

[0043] A water inlet 207 is provided at the upper portion of the inner pool wall. When the water level inside the preheating pool 205 reaches the water inlet 207 , the water enters the aeration pool 206 .

[0044] High and low liquid level sensors are respectively arranged inside the aeration tank 206. When the liquid level in the aeration tank 206 reaches the low liquid level sensor, the sensor is triggered, and the control unit controls the start of the pump 1 to fill the preheating tank 205 with the radioactive waste water to be treated. When the liquid level reaches the triggering high liquid level sensor, the control unit controls the shut-down of the pump 1 to stop pumping the radioactive waste water to be treated.

[0045] The aeration tank 206 is provided with a solar heating tube 301 of the solar heating device 3 and a microporous aeration device 5. Preferably, a double-layer suspension frame 6 is provided inside the aeration tank 206, and the double-layer suspension frame 6 includes an upper fixing frame and a lower fixing frame. The upper fixing frame is provided at the lower part of the underground thermal insulation aeration tank 2 to fix the microporous aeration device 5, and the lower fixing frame is provided at the bottom of the underground thermal insulation aeration tank 2 to fix the solar heating tube 301.

[0046] A temperature sensor is provided inside the aeration tank 206 to measure the internal water temperature.

[0047] A steam exhaust fan 202 is arranged near the top of the aeration tank 206, which is connected to the condenser 203, and the air outlet of the steam exhaust fan 202 is aligned with the condenser 203. The middle section of the condenser 203 is placed inside the preheating tank 205, and the condenser 203 is cooled by the wastewater to be treated in the preheating tank 205. The steam exhaust fan 202 is turned on to send the evaporated water vapor to the condenser 203, and the water vapor is condensed by the wastewater in the preheating tank, and the wastewater to be evaporated is preheated while the water vapor is condensed.

[0048] A condensation water tank 204 is arranged outside the underground thermal insulation aeration tank 2 .

[0049] The condensation pipe 203 is connected to the condensation water pool 204, and the water formed by the steam cooling is introduced into the condensation water pool 204. The underground thermal insulation aeration pool 2 is provided with an upper cover, and a thermal insulation layer 201 is provided outside.

[0050] The solar heating device 3 includes a solar heating tube 301, a solar panel 302 and a circulating water control circuit. The solar panel 302 is placed in a sunny place on the ground to convert solar energy into heat energy to heat the internal circulating water. When the water temperature inside the underground thermal insulation aeration tank 2 drops below the set temperature, the control unit controls the opening of the circulating water in the solar heating device 3 to circulate to the solar heating tube 301 to heat the radioactive wastewater to be treated inside the underground thermal insulation aeration tank 2. When the preset temperature is reached, the control unit can control the closing of the circulating water.

[0051] The microporous aeration device 5 comprises a plurality of aeration tubes 501, which are arranged in parallel or in a mesh. The aeration tubes 501 are provided with a plurality of aeration holes. Preferably, two aeration holes are provided on the same circumference of the aeration tube 501, and the circumferential angle formed by the line connecting the two aeration holes and the center of the circle is 45-50°, such as 45°.

[0052] The heating and air supply device 4 includes a fan 401 and a heating box 402. The fan 401 blows air into the heating box 402. A heating wire 4021 is provided inside the heating box 402 to heat the blown air. The air outlet pipeline of the heating box 402 is connected to the air inlet of the aeration pipe 501, and the hot air is transported to each aeration pipe 501, and then blown out from the aeration hole to aerate the radioactive wastewater to be treated inside the aeration tank 206, so as to improve the evaporation efficiency.

[0053] When working, the solar heating device 3 is first turned on to make the solar heating tube 301 heat the radioactive wastewater to be treated. After reaching the predetermined temperature, the heating and air supply device 4 is turned on for aeration. At the same time, the exhaust steam fan 202 is turned on to send the evaporated water vapor to the condenser pipe 203, and the water vapor is condensed by the wastewater in the preheating pool. While the water vapor is condensed, the wastewater to be evaporated is also preheated. The condensed water is introduced into the condensation water pool 204, and the condensed water is recycled.

[0054] The green and low-carbon liquid enhanced evaporation equipment provided by the utility model, which can be used in low-temperature weather, is not affected by the low-temperature weather in the north, can continuously evaporate and treat radioactive wastewater, has high heat utilization efficiency, greatly improves evaporation efficiency and processing capacity, and recycles evaporated and condensed wastewater to meet actual mass production needs.

[0055] The present invention is described in detail above in conjunction with the specific implementation methods and the accompanying drawings, but these descriptions cannot be understood as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, the technical solution of the present invention and its implementation methods may be subjected to a variety of equivalent substitutions, modifications or improvements, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be subject to the attached claims.

Claims

1. A green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather, characterized in that: It comprises a water pump (1), an underground heat-insulating aeration tank (2), a solar heating device (3), a heating and air supply device (4) and a microporous aeration device (5), and also comprises a control unit. The underground thermal insulation aeration tank (2) is arranged below the ground surface, and is provided with a preheating tank (205) and an aeration tank (206), which are separated by an inner tank wall. The aeration tank (206) is provided with a solar heating tube (301) of a solar heating device (3) and a microporous aeration device (5). The solar heating device (3) comprises a solar heating tube (301) and a solar panel (302). The microporous aeration device (5) comprises a plurality of aeration tubes (501) which are distributed in parallel or in a mesh shape, and a plurality of aeration holes are arranged on the aeration tubes (501).

2. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 1 is characterized in that: The water outlet of the water pump (1) is connected to the water inlet of the preheating tank (205). The underground thermal insulation aeration tank (2) is provided with a thermal insulation layer (201) outside. A water inlet (207) is arranged on the upper part of the inner pool wall.

3. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 1 is characterized in that: High and low liquid level sensors are respectively arranged inside the aeration tank (206).

4. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 1 is characterized in that: A double-layer suspension frame (6) is arranged inside the underground thermal insulation aeration tank (2), and the double-layer suspension frame (6) includes an upper fixing frame and a lower fixing frame. The upper fixing frame is arranged at the lower part of the underground thermal insulation aeration tank (2), the upper fixing frame fixes the microporous aeration device (5), and the lower fixing frame is arranged at the bottom of the underground thermal insulation aeration tank (2) to fix the solar heating pipe (301).

5. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 1 is characterized in that: A steam exhaust fan (202) is arranged near the top of the aeration tank (206), which is connected to the condenser pipe (203). The air outlet of the steam exhaust fan (202) is aligned with the condenser pipe (203). The middle section of the condenser tube (203) is placed inside the preheating tank (205). A condensation water pool (204) is arranged outside the underground thermal insulation aeration pool (2), and the condensation pipe (203) is connected to the condensation water pool (204).

6. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 1 is characterized in that: Two aeration holes are provided on the same circumference of the aeration pipe (501), and the circumferential angle formed by the line connecting the two aeration holes and the center of the circle is 45-50°.

7. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 1 is characterized in that: The heating and air supply device (4) comprises a fan (401) and a heating box (402); the fan (401) blows air into the heating box (402); a heating wire (4021) is arranged inside the heating box (402).

8. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 7 is characterized in that: The air outlet pipeline of the heating box (402) is connected to the air inlet of the aeration pipe (501).

9. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 1 is characterized in that: A temperature sensor is arranged inside the underground thermal insulation aeration tank (2).

10. The green and low-carbon liquid enhanced evaporation equipment that can be used in low-temperature weather according to claim 1 is characterized in that: The water pump (1) is arranged above the ground surface.

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