A high-cold high-altitude water treatment device and water supply system

Abstract

The application relates to the technical field of sewage treatment, in particular to a high-cold and high-altitude water treatment device and a water supply system, which comprises a sedimentation tank, a filter tank, a biological oxidation tank, a combustion chamber and a heat preservation medium circulating pipeline, a heat preservation interlayer is arranged outside the biological oxidation tank, the heat preservation medium circulating pipeline is connected with the heat preservation interlayer and the combustion chamber respectively; a tail gas pipe is arranged on the combustion chamber, heat exchange coils and a first aeration pipe are arranged in the sedimentation tank, the input end of the heat exchange coils is communicated with the tail gas pipe, and the output end of the heat exchange coils is communicated with an emptying pipe and the first aeration pipe respectively. The application converts the environmental burden of high-cold and high-altitude areas into production resources, almost eliminates the cost of outsourcing heat sources and acid, the treated water body retains appropriate minerals and alkalinity which are beneficial to human bodies, the taste is better than that of pure RO water, the corrosion to pipe networks is weaker, and the water supply for the high-cold and high-altitude areas is realized at low cost, low energy consumption, continuity, stability and high efficiency.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a water treatment device and water supply system for high-altitude and cold regions. Background Technology

[0002] For oil and gas extraction sites located in high-altitude and cold regions, the low temperature environment and water source affect the need to obtain water from nearby sources to ensure the continuity and stability of domestic water supply. Nearby water sources mostly rely on the meltwater from high-altitude glaciers and snow, resulting in low water temperature, high concentrations of ammonia, nitrogen, calcium ions, and magnesium ions, and high water hardness. Due to the low temperature environment, biological activity is reduced, and heating is difficult to maintain stably. Therefore, most existing technologies have abandoned biological oxidation processes to purify water sources and instead use softening + reverse osmosis processes to remove inorganic salts and organic matter from the water to obtain pure water for domestic use.

[0003] However, in the process of implementing this application, the applicant discovered that the reverse osmosis process generates high-salt and high-ammonia-nitrogen concentrate during operation. Direct discharge of this concentrate would cause significant pollution to fragile high-altitude and cold regions. If a thermal evaporation pond or crystallizer is constructed to treat the concentrate in an environmentally friendly manner, the investment and energy consumption will increase significantly. Consequently, the existing technology cannot simultaneously address the issues of the continuity, stability, environmental protection, and cost of domestic water supply in high-altitude and cold regions. Summary of the Invention

[0004] This application provides a water treatment device and water supply system for high-altitude and cold regions, which can at least solve the problems of continuous, stable, environmentally friendly and cost-effective domestic water supply in high-altitude and cold regions.

[0005] In a first aspect, this application provides a high-altitude, cold-weather water treatment device, comprising a sedimentation tank, a filtration tank, a biological oxidation tank, a combustion chamber, and a heat-insulating medium circulation pipeline. The sedimentation tank, filtration tank, and biological oxidation tank are arranged sequentially along the fluid flow direction. A heat-insulating jacket is provided outside the biological oxidation tank. The heat-insulating medium circulation pipeline is connected to the heat-insulating jacket and the combustion chamber, respectively. The heat-insulating medium circulation pipeline is used to collect the heat energy of the combustion chamber and transfer it to the heat-insulating jacket to maintain the biological oxidation tank at a preset temperature. An exhaust pipe is provided on the combustion chamber. A heat exchange coil and a first aeration pipe are provided in the sedimentation tank. The input end of the heat exchange coil is connected to the exhaust pipe, and the output end of the heat exchange coil is connected to the drain pipe and the first aeration pipe, respectively. A dosing module is provided on the sedimentation tank. The dosing module is used to add softening agents into the sedimentation tank.

[0006] Secondly, this application provides a high-altitude, cold-weather water supply system, including the aforementioned high-altitude, cold-weather water treatment device.

[0007] The technical solution adopted in this application can achieve the following beneficial effects: This application, taking into account the conditions of oil and gas extraction sites in high-altitude and cold regions, utilizes associated gas and residual oil that were previously vented and burned during oil and gas extraction. This transforms the environmental burden of high-altitude and cold regions into production resources, virtually eliminating the need for purchasing external heat sources and acids. Furthermore, the treated water retains appropriate amounts of minerals and alkalinity beneficial to the human body, has a better taste than pure RO water, and is less corrosive to pipe networks. This achieves a low-cost, low-energy, continuous, stable, and efficient supply of domestic water to high-altitude and cold regions. Attached Figure Description

[0008] The accompanying drawings, which are provided to further understand this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0009] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the high-altitude and cold-weather water treatment device disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the pipeline connection of the high-altitude and cold-weather water treatment device disclosed in the embodiments of this application; Figure 3 This is a schematic diagram of the module connection of the control module disclosed in an embodiment of this application.

[0010] In the diagram, 100 is the sedimentation tank; 110 is the first transfer pump; 120 is the second transfer pump; 200 is the filter tank; 300 is the biological oxidation tank; 310 is the insulation jacket; 320 is the second aeration pipe; 400 is the combustion chamber; 410 is the fuel pipe; 420 is the exhaust pipe; 430 is the heat exchange coil; 440 is the first aeration pipe; 450 is the vent pipe; 510 is the heating pipe; 520 is the medium input pipe; 530 is the medium output pipe; 540 is the circulation pump; 550 is the medium circulation branch pipe; 600 is the purification module; and 700 is the disinfection tank. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0012] In related technologies, for the supply of domestic water in oil and gas extraction sites in high-altitude and cold regions, the impact of environmental freezing damage often leads to the interruption of water supply from external sources due to pipeline damage. It is necessary to extract and purify nearby water sources to maintain a stable supply of domestic water. However, due to the special characteristics of the water quality, existing technologies mainly employ a softening + reverse osmosis process. This involves adding chemicals to remove calcium and magnesium ions from the water to soften it, and then passing the water through a reverse osmosis membrane under high pressure to remove inorganic salts, organic matter, bacteria, and viruses, resulting in purified water for domestic use. However, reverse osmosis has several drawbacks. First, reverse osmosis membranes are expensive and sophisticated consumables, and the high pressure required during operation corresponds to high energy consumption, increasing operating costs. Second, the reverse osmosis process generates concentrated water with high salinity and ammonia nitrogen levels, which, if directly discharged, would cause significant pollution to fragile high-altitude and cold regions. If thermal evaporation ponds or crystallizers are constructed for treatment, the investment and energy consumption will further increase. Therefore, when using reverse osmosis to supply domestic water in high-altitude and cold regions, it is difficult to simultaneously address the issues of supply continuity, stability, environmental protection, and cost.

[0013] As for biological oxidation processes to purify water sources, biological activity decreases in low-temperature environments, and the new energy sources commonly used in high-altitude and cold regions are volatile, making it difficult to provide a stable operating temperature for biological oxidation processes. Therefore, most existing technologies have abandoned biological oxidation processes for water purification.

[0014] Therefore, this application provides a high-altitude, cold-climate water treatment device and water supply system. Taking into account the conditions of oil and gas extraction sites in high-altitude, cold-climate regions, it utilizes associated gas and residual oil that were previously vented and burned during oil and gas extraction, converting them into a stable heat source to maintain the operation of the biological system. This ensures the continuous and stable operation of the biological oxidation tank. Simultaneously, it guides the waste heat from the combustion exhaust gas to heat the settling tank during the chemical softening process. This not only improves the softening efficiency and effect but also eliminates the impact of low-temperature water on the biological oxidation tank. After softening reaches the required standards, the exhaust gas is then introduced into the settling tank. By using CO2 from exhaust gas to adjust the pH of the water in the settling tank, the amount of chemicals used is reduced, energy consumption is lowered, and resource utilization is improved. This also eliminates the damage to the microbial community in the biological oxidation tank caused by excessively high pH levels, reducing the risk of scaling in pipes and microbial communities. The environmental burden of high-altitude and cold regions is transformed into a productive resource, virtually eliminating the need for external heat sources and acid. Furthermore, the treated water retains appropriate amounts of beneficial minerals and alkalinity, has a better taste than pure RO water, and is less corrosive to pipe networks. This achieves a low-cost, low-energy, continuous, stable, and efficient supply of domestic water to high-altitude and cold regions. Specific examples are described below.

[0015] Example 1

[0016] This embodiment provides a water treatment device for high-altitude and cold regions, such as... Figure 1 and Figure 2As shown, the system includes a settling tank 100, a filter tank 200, a biological oxidation tank 300, a combustion chamber 400, and a heat-insulating medium circulation pipeline. The settling tank 100, filter tank 200, and biological oxidation tank 300 are arranged sequentially along the fluid flow direction. A heat-insulating interlayer 310 is provided outside the biological oxidation tank 300. The heat-insulating medium circulation pipeline is connected to the heat-insulating interlayer 310 and the combustion chamber 400, respectively. The heat-insulating medium circulation pipeline is used to collect the heat energy of the combustion chamber 400 and transfer it to the heat-insulating interlayer 310. In order to maintain the biological oxidation tank 300 at a preset temperature; the combustion chamber 400 is provided with an exhaust pipe 420, the sedimentation tank 100 is provided with a heat exchange coil 430 and a first aeration pipe 440, the input end of the heat exchange coil 430 is connected to the exhaust pipe 420, and the output end of the heat exchange coil 430 is connected to the drain pipe 450 and the first aeration pipe 440 respectively. The sedimentation tank 100 is provided with a dosing module, which is used to add softening agents into the sedimentation tank 100.

[0017] In practical applications, groundwater or river water is used as the water source and introduced into the sedimentation tank 100. The water is first softened by adding chemicals, specifically lime and flocculants, to convert calcium and magnesium ions in the water into CaCO3 and Mg(OH)2, which then aggregate into flocs for rapid sedimentation and separation. During this process, exhaust gas from the combustion chamber 400 is guided through the exhaust pipe 420 to heat the sedimentation tank 100. In some embodiments, the waste heat from the exhaust gas can be used to raise the water temperature to 15°C. At ~26℃, the outlet of the preferred dosing module corresponds to the heat exchange coil 430, which not only improves the softening efficiency and effect but also eliminates the impact of low-temperature water on the biological oxidation tank 300. After softening reaches the standard and the flocs have fully settled, the exhaust gas from the heat exchange coil 430 is introduced into the settling tank 100 through the first aeration pipe 440 (the exhaust gas during chemical softening is discharged through the vent pipe 450). The CO2 in the exhaust gas is used to adjust the pH of the water in the settling tank 100. Adjusting the water pH to 7.5-8.0 reduces the amount of chemicals used, lowers energy consumption, and improves resource utilization. It also eliminates the damage to the microbial community in the biological oxidation tank 300 caused by excessively high pH, ​​reducing the risk of scaling in pipes and on the microbial carriers. The water then enters the biological oxidation tank 300, where ammonia nitrogen is removed, dissolved organic matter is mineralized into CO2 and water, and the treated water retains beneficial minerals and alkalinity, resulting in a better taste than pure R. O-water is less corrosive to pipelines. In this process, associated gas and residual oil that were previously vented and burned during oil and gas extraction are transformed into production resources. They are burned in the combustion chamber 400 to become a heat source. The heat is transferred to the insulation jacket 310 through the insulation medium circulation pipeline, maintaining the biological oxidation tank 300 at 20℃~26℃. This ensures the continuous and stable operation of the biological oxidation tank 300, achieving low-cost, low-energy consumption, continuous, stable and efficient supply of domestic water to high-altitude and cold regions.

[0018] In some embodiments, to ensure the normal operation of chemical softening and to avoid acidification of the water due to excessive CO2 during pH adjustment, a first detection unit can be installed on the sedimentation tank 100. The first detection unit is used to detect the temperature and pH value inside the sedimentation tank 100. The output end of the heat exchange coil 430 is connected to the drain pipe 450 and the first aeration pipe 440 through a three-way valve. During chemical softening, the output end of the heat exchange coil 430 is connected to the drain pipe 450 through the three-way valve. After the softening reaches the standard, the output end of the heat exchange coil 430 is connected to the first aeration pipe 440 through the three-way valve. When the first detection unit detects that the pH value in the sedimentation tank has dropped to a preset value, it controls the output end of the heat exchange coil 430 to be connected to the drain pipe 450 through the three-way valve.

[0019] In some embodiments, to achieve automated operation of the device, the processing device may further include a control module, such as... Figure 3 As shown, the first detection unit and the three-way valve are respectively connected to the control module. The control module is configured to: determine the on / off state of the three-way valve based on the detection signal of the first detection unit, so as to realize the connection between the output end of the heat exchange coil 430 and the drain pipe 450 or the first aeration pipe 440; based on the above design, during operation, the control module receives temperature and pH data from the first detection unit in real time. When it is detected that the water in the sedimentation tank 100 has been softened, the three-way valve is automatically switched so that the exhaust gas is introduced into the first aeration pipe 440 after passing through the heat exchange coil 430 to participate in the pH adjustment of the water; when the pH of the water drops to the target range, the control module acts again to switch the three-way valve to the drain pipe 450 side, stop the CO2 injection into the sedimentation tank 100, and maintain the residual heat of the exhaust gas to heat the water in the sedimentation tank 100, thereby accurately maintaining the water quality parameters in the sedimentation tank 100 within the process requirement range, ensuring the stable operation of the subsequent biological oxidation tank 300. The first detection unit is also used to detect the turbidity of the water in the sedimentation tank 100 to determine whether the water in the sedimentation tank 100 has been softened to meet the standard. The first detection unit is existing technology and can be an integration of a temperature sensor, a pH meter, and a turbidity meter. It is sufficient to detect the temperature, pH value, and turbidity of the water in the sedimentation tank 100. No specific limitation is made here.

[0020] In some embodiments, to transfer the heat energy from waste combustion to the biological oxidation tank 300, a fuel pipe 410 can be installed on the combustion chamber 400, connected to a burner within the combustion chamber 400. The insulation medium circulation pipeline includes a heating pipe 510, a medium input pipe 520, and a medium output pipe 530, with the heating pipe 510 corresponding to the burner. The heating pipe 510, medium input pipe 520, insulation jacket 310, and medium output pipe 530 are sequentially circulated and connected. A circulation pump 540 is installed on the medium input pipe 520 or the medium output pipe 530. The circulation pump 540 drives the insulation medium to flow in the medium circulation pipeline, thereby efficiently transferring the heat generated in the combustion chamber 400 to the insulation jacket 310 of the biological oxidation tank 300. In some embodiments, the insulation medium is heat transfer oil or antifreeze, which can maintain good fluidity and heat conduction performance in cold environments, ensuring that the temperature inside the biological oxidation tank 300 is stably maintained within a suitable range for microbial activity. In addition, to improve thermal energy utilization efficiency, a heat insulation layer can be installed on the outside of the medium input pipe 520 and the medium output pipe 530 to reduce heat loss. A temperature sensor is also installed on the medium output pipe 530 to monitor the temperature of the return medium in real time and feed it back to the control module to dynamically adjust the fuel supply and achieve closed-loop control of combustion intensity.

[0021] In some embodiments, to maintain the stability of the operating temperature of the biological oxidation tank 300, a second detection unit can be installed on the biological oxidation tank 300. The second detection unit is used to detect the temperature inside the biological oxidation tank 300. A fuel valve is installed on the fuel pipe 410. The fuel valve and the second detection unit are respectively connected to a control module. The control module is configured to: determine the opening degree of the fuel valve based on the temperature signal detected by the second detection unit, so as to dynamically adjust the fuel supply in the combustion chamber 400, thereby precisely controlling the heat energy delivered to the insulation jacket 310 by the insulation medium circulation pipeline, ensuring that the temperature inside the biological oxidation tank 300 is always maintained within a suitable range of 20℃~26℃. When the temperature reported by the second detection unit is lower than the set lower limit, the control module automatically increases the opening degree of the fuel valve to increase the combustion intensity; when the temperature approaches or reaches the upper limit, it decreases the opening degree or even temporarily shuts off the fuel supply to avoid overheating and affecting the activity of microorganisms. The second detection unit is existing technology and can specifically be a temperature sensor, which is not specifically limited here.

[0022] In some embodiments, the heat-insulating medium circulation pipeline further includes a medium circulation branch pipe 550. The two ends of the medium circulation branch pipe 550 are connected to the medium input pipe 520 and the medium output pipe 530 respectively through a three-way valve. The medium circulation branch pipe 550 is arranged around the outlet pipe of the filter tank 200. The water flowing from the filter tank 200 to the biological oxidation tank 300 is heated through the medium circulation branch pipe 550 to ensure that the water temperature is compatible with the temperature of the biological oxidation tank 300 and to reduce the impact of water temperature on the biological oxidation tank 300.

[0023] In some embodiments, to prevent sulfides in the exhaust gas from polluting water bodies and the environment, a purification module 600 can be installed at the output end of the heat exchange coil 430. The purification module 600 filters organic matter and sulfides in the exhaust gas. Located upstream of the drain pipe 450 and the first aeration pipe 440, the purification module 600 ensures that the exhaust gas entering the settling tank 100 or the drain pipe 450 meets environmental emission standards. The purification module 600 can employ a combination of activated carbon adsorption and alkaline spraying to effectively remove residual hydrogen sulfide, sulfur dioxide, and volatile organic compounds from the exhaust gas, while preventing acidic gases from interfering with the pH adjustment process of the water body. In actual operation, the purification module 600 can also integrate a differential pressure sensor to monitor filter clogging and trigger a cleaning or replacement prompt when the resistance exceeds a threshold, ensuring long-term stable operation of the system.

[0024] In some embodiments, to guide the orderly flow of exhaust gas, a fan can be installed at the output end of the purification module 600. The fan is used to provide the power required for the flow of exhaust gas, ensuring that the exhaust gas is stably transported in the heat exchange coil 430, the purification module 600 and subsequent pipelines. At the same time, the operation of the fan can be linked with the control module, automatically starting or stopping or adjusting the speed according to the pH adjustment requirements in the sedimentation tank 100 or the venting status, so as to match the gas flow requirements under different operating conditions.

[0025] In some embodiments, the purification module 600 can be equipped with a molecular sieve adsorption device, which can effectively adsorb residual trace organic pollutants and acidic gases in the exhaust gas, ensuring that the gas composition entering the settling tank 100 is safe and controllable. It should be noted that the molecular sieve adsorption device is existing technology, and existing adsorption devices with regeneration capabilities can be used. During system operation intervals, adsorption performance can be restored through thermal stripping or depressurization, extending service life and reducing maintenance frequency. Furthermore, the adsorption device has a layered structure internally; the upper layer intercepts particulate matter, while the lower layer focuses on the deep purification of gaseous pollutants, thereby improving overall treatment efficiency and stability.

[0026] In some embodiments, to maintain the continuous operation of the biological oxidation tank 300 and the filtration tank 200, the high-altitude and cold-weather water treatment device may include at least two sedimentation tanks 100 connected in parallel. The two sedimentation tanks 100 are alternately connected to the filtration tank 200. When the first sedimentation tank 100 (which has completed chemical softening and pH adjustment) is connected to the filtration tank 200, the second sedimentation tank 100 introduces a new water source and then performs chemical softening. After the softening reaches the standard, pH adjustment is performed. When the pH value is adjusted to the preset value, and the water in the first sedimentation tank 100 has been completely or nearly completely drained, the second sedimentation tank 100 is switched to the filtration tank 200. This ensures the continuous and stable operation of the filtration tank 200 and the biological oxidation tank 300, while the first sedimentation tank 100 introduces a new water source to prepare for pretreatment such as chemical softening and pH adjustment.

[0027] In some embodiments, to reduce the impact of environmental fluctuations, the high-altitude and cold-weather water treatment device may further include a regulating branch. The regulating branch and the heat exchange coil 430 are connected in parallel. The exhaust pipe 420 is directly connected to the purification module 600 through the regulating branch, without passing through the sedimentation tank 100. A regulating valve is provided on the regulating branch. When the ambient temperature rises, the water source temperature rises accordingly. The water near the heat exchange coil 430 is prone to overheating, which can easily cause the instantaneous explosive generation of CaCO3 crystal nuclei and form extremely fine needle-like or amorphous precipitates. The flocculant is difficult to effectively bridge, resulting in an increase in the turbidity of the water in the sedimentation tank 100. At this time, part of the exhaust gas can be directly introduced into the purification module 600 for treatment through the regulating branch and then directly discharged, thereby reducing the amount of residual heat from the exhaust gas and the amount of heating in the water in the sedimentation tank 100, thus avoiding the water near the heat exchange coil 430 from being affected by overheating and affecting the pretreatment of the water.

[0028] In some embodiments, to ensure the safety of the water produced by the device as domestic drinking water, the high-altitude and cold-weather water treatment device may also include a disinfection tank 700. The disinfection tank 700 is located at the output end of the biological oxidation tank 300. The disinfection tank 700 is equipped with an ultraviolet disinfection device or a sodium hypochlorite dosing system for final sterilization of the treated water, ensuring that the effluent microbiological indicators meet national drinking water hygiene standards. Simultaneously, the disinfection tank 700 has a residence time control structure to ensure sufficient contact time for the water to achieve effective sterilization. To further improve water quality safety, a residual chlorine detector or ultraviolet intensity monitor can be installed at the outlet of the disinfection tank 700, linked to the control module. Based on real-time detection data, the disinfectant dosage or ultraviolet lamp power can be dynamically adjusted to avoid health risks caused by insufficient or excessive disinfection. Furthermore, the disinfection tank can be equipped with an emergency bypass pipeline to ensure uninterrupted water supply during equipment maintenance or sudden malfunctions. An online water quality monitoring unit is also installed to continuously monitor key parameters such as turbidity, residual chlorine, and pH value, ensuring that the final produced water consistently meets standards. In some embodiments, a second aeration pipe 320 may be provided in the biological oxidation tank 300. The high-altitude and cold-weather water treatment device further includes a first transfer pump 110 and a second transfer pump 120. The input end of the first transfer pump 110 is connected to the water source, the output end of the first transfer pump 110 is connected to the input end of the sedimentation tank 100, the output end of the sedimentation tank 100 is connected to the input end of the second transfer pump 120, and the output end of the second transfer pump 120 is connected to the filter tank 200.

[0029] Example 2

[0030] This embodiment provides a high-altitude and cold-weather water supply system, including the high-altitude and cold-weather water treatment device in Embodiment 1, and also includes a water source pretreatment unit and a clear water storage tank; the water source pretreatment unit is located at the front end of the sedimentation tank 100, and is used to initially intercept large particulate impurities and floating objects in the water, reducing the load on the subsequent sedimentation tank 100; the clear water storage tank is connected to the outlet end of the disinfection tank 700, and is used to store qualified domestic water, and achieve constant pressure water supply through a variable frequency water supply pump set.

[0031] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0032] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A high-cold high-altitude water treatment device, characterized in that, The system includes a sedimentation tank, a filtration tank, a biological oxidation tank, a combustion chamber, and a heat-insulating medium circulation pipeline. The sedimentation tank, filtration tank, and biological oxidation tank are arranged sequentially along the fluid flow direction. A heat-insulating jacket is installed outside the biological oxidation tank. The heat-insulating medium circulation pipeline is connected to the heat-insulating jacket and the combustion chamber, respectively. The heat-insulating medium circulation pipeline is used to collect the heat energy of the combustion chamber and transfer it to the heat-insulating jacket to maintain the biological oxidation tank at a preset temperature. An exhaust pipe is installed on the combustion chamber. A heat exchange coil and a first aeration pipe are installed in the sedimentation tank. The input end of the heat exchange coil is connected to the exhaust pipe, and the output end of the heat exchange coil is connected to the drain pipe and the first aeration pipe, respectively. A dosing module is installed on the sedimentation tank. The dosing module is used to add softening agents into the sedimentation tank.

2. The high-cold high-altitude water treatment device according to claim 1, characterized in that, The sedimentation tank is equipped with a first detection unit, which is used to detect the temperature and pH value inside the sedimentation tank. The output end of the heat exchange coil is connected to the drain pipe and the first aeration pipe through a three-way valve.

3. The high-cold high-altitude water treatment device according to claim 2, characterized in that, The high-altitude and cold-weather water treatment device also includes a control module. The first detection unit and the three-way valve are respectively connected to the control module. The control module is configured to determine the on / off state of the three-way valve based on the detection signal of the first detection unit, so as to realize the connection between the output end of the heat exchange coil and the drain pipe or the first aeration pipe.

4. The high-cold high-altitude water treatment device according to claim 3, characterized in that, A fuel pipe is installed on the combustion chamber and connected to the burner inside the combustion chamber. The heat insulation medium circulation pipeline includes a heating pipe, a medium input pipe and a medium output pipe. The heating pipe corresponds to the burner. The heating pipe, medium input pipe, heat insulation jacket and medium output pipe are sequentially circulated and connected. A circulation pump is installed on the medium input pipe or the medium output pipe.

5. The high-cold high-altitude water treatment device according to claim 4, characterized in that, The biological oxidation tank is equipped with a second detection unit for detecting the temperature inside the biological oxidation tank. The fuel pipe is equipped with a fuel valve. The fuel valve and the second detection unit are respectively connected to the control module. The control module is configured to determine the opening degree of the fuel valve based on the temperature signal detected by the second detection unit. And / or, the heat insulation medium circulation pipeline further includes a medium circulation branch pipe, the two ends of which are connected to the medium input pipe and the medium output pipe respectively through a three-way valve, and the medium circulation branch pipe is arranged around the outlet pipeline of the filter tank.

6. The high-cold high-altitude water treatment device according to any one of claims 1-5, characterized in that, The heat exchange tube is equipped with a purification module at its output end. The purification module is used to filter organic matter and sulfides in the exhaust gas. The purification module is located upstream of the vent pipe and the first aeration pipe.

7. The high-cold high-altitude water treatment device according to claim 6, characterized in that, The output end of the purification module is equipped with a fan; And / or, the purification module is an activated carbon or molecular sieve adsorption device.

8. A high-altitude, cold-weather water treatment device according to claim 6, characterized in that, The high-altitude and cold-weather water treatment device also includes a regulating branch, which is connected in parallel with the heat exchange coil. The exhaust pipe is connected to the purification module through the regulating branch, and a regulating valve is installed on the regulating branch.

9. A high-altitude, cold-weather water treatment device according to any one of claims 1 to 5, characterized in that, The high-altitude and cold-weather water treatment device also includes a disinfection tank, which is located at the output end of the biological oxidation tank; And / or, the high-altitude and cold-climate water treatment device includes at least two sedimentation tanks connected in parallel.

10. A high-altitude, cold-weather water supply system, characterized in that, Includes the high-altitude and cold-weather water treatment device as described in any one of claims 1 to 9.

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