Domestic sewage treatment method and system for high-cold and high-altitude areas

Abstract

The invention relates to a domestic sewage treatment method and system for high-cold and high-altitude areas, and relates to the technical field of sewage treatment.The method comprises the steps that the water inlet temperature of to-be-treated sewage entering a reactor is determined; determining the dissolved oxygen concentration of the sewage to be treated; performing biological activity enhancement treatment on the to-be-treated sewage according to the dissolved oxygen concentration, and determining a biological activity index of the to-be-treated sewage; carrying out pollutant degradation treatment according to the biological activity index of the to-be-treated sewage, and determining the degradation rate of the to-be-treated sewage; performing efficiency optimization treatment on the reactor according to the water inlet temperature, the dissolved oxygen concentration, the biological activity index and the degradation rate of the to-be-treated sewage, and determining the total efficiency of the reactor; and performing control optimization treatment on the reactor according to the total efficiency of the reactor in combination with the water inlet temperature, the dissolved oxygen concentration and the biological activity index of the sewage to be treated, and determining control parameters of the reactor. The sewage treatment effect of the high-cold and high-altitude area can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a method, system, electronic equipment and non-transient computer-readable storage medium for treating domestic sewage in cold and high-altitude areas. Background Art

[0002] In cold and high-altitude areas, traditional sewage treatment methods are usually used to treat domestic sewage. For example, the activated sludge method can be used to effectively remove organic matter, nitrogen, phosphorus and other pollutants in sewage.

[0003] However, the biodegradation rate slows down in low temperature environments, and the efficiency of traditional biological treatment methods drops significantly, resulting in longer treatment time and the inability of sewage to meet discharge standards in a timely manner. Secondly, due to insufficient oxygen supply, the treatment capacity of traditional activated sludge methods in these areas is limited, especially in winter, when the temperature drops sharply, the metabolic activity of microorganisms almost stagnates, seriously affecting the sewage treatment effect. Summary of the invention

[0004] In response to the technical problems existing in the prior art, the present invention provides a method, system, electronic device and non-transitory computer-readable storage medium for treating domestic sewage in cold and high-altitude areas, which can improve the sewage treatment effect.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] The present invention provides a method for treating domestic sewage in cold and high altitude areas, the method comprising:

[0007] Perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the water inlet temperature of the sewage to be treated entering the reactor;

[0008] Performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the sewage to be treated;

[0009] Performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration to determine the biological activity index of the sewage to be treated;

[0010] Performing pollutant degradation treatment according to the biological activity index of the sewage to be treated, and determining the degradation rate of the sewage to be treated;

[0011] According to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the sewage to be treated, the reactor is subjected to efficiency optimization treatment to determine the overall efficiency of the reactor;

[0012] According to the total efficiency of the reactor, combined with the inlet temperature, dissolved oxygen concentration and biological activity index of the sewage to be treated, the reactor is controlled and optimized to determine the control parameters of the reactor.

[0013] Optionally, the treating wastewater is subjected to solar energy and geothermal dual energy coupling preheating treatment to determine the inlet temperature of the treated wastewater entering the reactor, including:

[0014] A solar heat collecting panel and a geothermal heat exchanger are arranged at the water inlet end of the reactor;

[0015] The solar radiation energy is converted into thermal energy by the solar heat collecting panel, and the geothermal energy is collected from underground by the geothermal heat exchanger;

[0016] The collected heat energy is transferred to the water inlet through a heat exchange device to preheat the sewage to be treated;

[0017] The ratio of heat collection by the solar thermal collector and heat exchange by the geothermal heat exchanger is dynamically adjusted according to the ambient temperature and the current temperature of the sewage to be treated.

[0018] Optionally, the water inlet temperature is calculated in the following manner:

[0019] Obtaining solar radiation intensity and the heat collection area of ​​the solar heat collecting panel;

[0020] Obtaining the geothermal thermal conductivity and geothermal temperature gradient of the geothermal heat exchanger;

[0021] Obtaining the water specific heat capacity, water volume, altitude and atmospheric pressure correction coefficient of the sewage to be treated;

[0022] The water inlet temperature is determined based on the solar radiation intensity, the collection area of ​​the solar collector panel, the geothermal thermal conductivity of the geothermal heat exchanger, the geothermal temperature gradient, the water specific heat capacity of the sewage to be treated, the water volume, and the altitude and atmospheric pressure correction coefficient of the environment.

[0023] Optionally, the water inlet temperature is expressed as:

[0024]

[0025] Among them, Tp is the inlet water temperature after preheating, Hs is the solar radiation intensity, Rs is the collection area of ​​the solar collector, Kg is the geothermal thermal conductivity of the geothermal heat exchanger, Gt is the geothermal temperature gradient, Cw is the specific heat capacity of water, Vw is the water volume, βh is the altitude, and P is the atmospheric pressure correction factor.

[0026] Optionally, performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the sewage to be treated includes:

[0027] installing a pressure fluctuation device in the aeration device of the reactor;

[0028] By adjusting the pressure fluctuation frequency, the dissolution efficiency of oxygen in the sewage to be treated is enhanced;

[0029] The aeration volume and pressure fluctuation parameters are monitored in real time and automatically adjusted to obtain the dissolved oxygen concentration of the sewage to be treated.

[0030] Optionally, the dissolved oxygen concentration is calculated by:

[0031] Obtain oxygen partial pressure under standard atmospheric pressure;

[0032] Obtaining the height correction factor, pressure fluctuation frequency, time, and standard temperature of the environment where the sewage to be treated is located;

[0033] The dissolved oxygen concentration is determined according to the oxygen partial pressure under the standard atmospheric pressure, the altitude correction factor, the pressure fluctuation frequency, the time, and the standard temperature of the environment where the sewage to be treated is located.

[0034] Optionally, the dissolved oxygen concentration is expressed as:

[0035]

[0036] Wherein, Do is the dissolved oxygen concentration, Po is the oxygen partial pressure under standard atmospheric pressure, γh is the altitude correction factor, ω is the pressure fluctuation frequency, t is the time, and To is the standard temperature.

[0037] Optionally, the performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration to determine the biological activity index of the sewage to be treated includes:

[0038] Obtaining the basic growth rate of microorganisms in the sewage to be treated;

[0039] Obtaining the standard dissolved oxygen concentration required for the microbial metabolism process under standard conditions;

[0040] Obtaining a temperature sensitivity coefficient describing the degree of influence of temperature change on the biological activity index, and a critical temperature of the microbial activity;

[0041] Obtaining the altitude suppression factor of the influence degree of altitude on the biological activity index, the current altitude of the sewage to be treated, and the maximum adaptation altitude;

[0042] The biological activity index of the sewage to be treated is determined according to the basic growth rate, the standard dissolved oxygen concentration, the temperature sensitivity coefficient, the critical temperature, the impact degree altitude suppression factor, the current altitude and the maximum adaptation altitude.

[0043] Optionally, performing pollutant degradation treatment according to the biological activity index of the sewage to be treated to determine the degradation rate of the sewage to be treated includes:

[0044] Obtaining the oxygen utilization coefficient of the influence of oxygen concentration on the degradation rate of pollutants, and the temperature influence coefficient of the influence of temperature on the degradation rate of pollutants;

[0045] Obtain the time decay coefficient of the pollutant degradation rate decaying over time;

[0046] Obtain the concentration influence factor of the pollutant concentration on the degradation rate;

[0047] Obtaining the current pollutant concentration of the wastewater to be treated and the initial pollutant concentration when the wastewater just enters the reactor;

[0048] The degradation rate of the sewage to be treated is determined according to the oxygen utilization coefficient, the temperature influence coefficient, the time attenuation coefficient, the concentration influence factor, the current pollutant concentration and the initial pollutant concentration.

[0049] The present invention also provides a domestic sewage treatment system for high-cold and high-altitude areas, the system comprising:

[0050] The temperature determination module is used to perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the water inlet temperature of the sewage to be treated entering the reactor;

[0051] an oxygen enrichment treatment module, used for performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature, and determining the dissolved oxygen concentration of the sewage to be treated;

[0052] An activity enhancement module, used for performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration, and determining the biological activity index of the sewage to be treated;

[0053] A degradation treatment module, used to perform pollutant degradation treatment according to the biological activity index of the sewage to be treated and determine the degradation rate of the sewage to be treated;

[0054] An efficiency optimization module, used to perform efficiency optimization processing on the reactor according to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the sewage to be treated, and determine the overall efficiency of the reactor;

[0055] The control optimization module is used to perform control optimization processing on the reactor according to the total efficiency of the reactor in combination with the inlet temperature, dissolved oxygen concentration and biological activity index of the sewage to be treated, and determine the control parameters of the reactor.

[0056] In addition, to achieve the above-mentioned purpose, the present invention also proposes an electronic device, including: a memory for storing computer software programs; a processor for reading and executing the computer software programs, thereby realizing a method for treating domestic sewage in high-cold and high-altitude areas as described above.

[0057] In addition, to achieve the above-mentioned purpose, the present invention also proposes a non-transitory computer-readable storage medium, in which a computer software program is stored. When the computer software program is executed by a processor, it implements a method for treating domestic sewage in high-cold and high-altitude areas as described above.

[0058] The beneficial effects of the present invention are:

[0059] (1) The present invention can ensure that sewage can still be efficiently treated in a low-temperature environment, thereby improving the biodegradability of the sewage treatment process and the overall efficiency of the system.

[0060] (2) The present invention solves the problem of low oxygen levels in high altitude areas by increasing the concentration of dissolved oxygen, thereby enhancing the activity of microorganisms and ensuring stable operation and efficient degradation of the sewage treatment system.

[0061] (3) The present invention improves the growth rate and degradation efficiency of microorganisms in low temperature and high altitude environments, enhances the stability and durability of the system, and makes the sewage treatment process more efficient, especially in cold climate conditions.

[0062] In summary, the present invention overcomes the common problems in sewage treatment in cold and high-altitude areas by optimizing energy use, improving microbial activity, increasing dissolved oxygen concentration, adjusting reactor parameters, etc., and provides an efficient, energy-saving, environmentally friendly and stable solution. It can not only improve sewage treatment efficiency, but also reduce energy consumption and enhance the sustainability of the system, which is in line with the green development trend in the field of modern sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 A scene diagram of a method for treating domestic sewage in cold and high altitude areas provided by the present invention;

[0064] Figure 2 A flow chart of a method for treating domestic sewage in cold and high altitude areas provided by the present invention;

[0065] Figure 3A schematic diagram of the structure of a domestic sewage treatment system in cold and high altitude areas provided by the present invention;

[0066] Figure 4 A schematic diagram of the hardware structure of a possible electronic device provided by the present invention;

[0067] Figure 5 A schematic diagram of the hardware structure of a possible computer-readable storage medium provided by the present invention. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0069] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] In the description of the present invention, the term "for example" is used to mean "used as an example, illustration or explanation". Any embodiment described as "for example" in the present invention is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present invention.

[0071] See also Figure 1 , Figure 1 This is a scene diagram of a method for treating domestic sewage in cold and high altitude areas provided by the present invention. Figure 1As shown, the terminal and the server are connected via a network, such as a wired or wireless network connection. The terminal may include but is not limited to portable terminals such as mobile phones and tablets installed with various network platform applications, as well as fixed terminals such as computers, query machines, and advertising machines. The server provides users with various business services, including service push servers, user recommendation servers, etc.

[0072] It should be noted that Figure 1 The scenario diagram of a method for treating domestic sewage in a cold and high-altitude area is only an example. The terminal, server and application scenario described in the embodiment of the present invention are intended to more clearly illustrate the technical solution of the embodiment of the present invention, and do not generate limitations on the technical solution provided by the embodiment of the present invention. Ordinary technicians in this field can know that with the evolution of the system and the emergence of new business scenarios, the technical solution provided by the embodiment of the present invention is also applicable to similar technical problems.

[0073] Among them, the terminal can be used for:

[0074] Perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the water inlet temperature of the sewage to be treated entering the reactor;

[0075] Performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the sewage to be treated;

[0076] Performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration to determine the biological activity index of the sewage to be treated;

[0077] Performing pollutant degradation treatment according to the biological activity index of the sewage to be treated, and determining the degradation rate of the sewage to be treated;

[0078] According to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the sewage to be treated, the reactor is subjected to efficiency optimization treatment to determine the overall efficiency of the reactor;

[0079] According to the total efficiency of the reactor, combined with the inlet temperature, dissolved oxygen concentration and biological activity index of the sewage to be treated, the reactor is controlled and optimized to determine the control parameters of the reactor.

[0080] See also Figure 2 , provides a flow chart of a method for treating domestic sewage in cold and high altitude areas of the present invention, comprising the following steps:

[0081] Step 201: Perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the water inlet temperature of the sewage to be treated entering the reactor.

[0082] In some embodiments, step 201 may include:

[0083] A solar heat collecting panel and a geothermal heat exchanger are arranged at the water inlet end of the reactor;

[0084] The solar radiation energy is converted into thermal energy by the solar heat collecting panel, and the geothermal energy is collected from underground by the geothermal heat exchanger;

[0085] The collected heat energy is transferred to the water inlet through a heat exchange device to preheat the sewage to be treated;

[0086] The ratio of heat collection by the solar thermal collector and heat exchange by the geothermal heat exchanger is dynamically adjusted according to the ambient temperature and the current temperature of the sewage to be treated.

[0087] In some embodiments, the inlet water temperature can be calculated as follows:

[0088] Obtaining solar radiation intensity and the heat collection area of ​​the solar heat collecting panel;

[0089] Obtaining the geothermal thermal conductivity and geothermal temperature gradient of the geothermal heat exchanger;

[0090] Obtaining the water specific heat capacity, water volume, altitude and atmospheric pressure correction coefficient of the sewage to be treated;

[0091] The water inlet temperature is determined based on the solar radiation intensity, the collection area of ​​the solar collector panel, the geothermal thermal conductivity of the geothermal heat exchanger, the geothermal temperature gradient, the water specific heat capacity of the sewage to be treated, the water volume, and the altitude and atmospheric pressure correction coefficient of the environment.

[0092] In some embodiments, the inlet water temperature can be expressed as:

[0093]

[0094] Among them, Tp is the inlet water temperature after preheating, Hs is the solar radiation intensity, Rs is the collection area of ​​the solar collector, Kg is the geothermal thermal conductivity of the geothermal heat exchanger, Gt is the geothermal temperature gradient, Cw is the specific heat capacity of water, Vw is the water volume, βh is the altitude, and P is the atmospheric pressure correction factor.

[0095] In specific implementation, Tp is the final temperature of sewage after being heated by the combined action of solar energy and geothermal dual energy system. For high-altitude and cold areas, the temperature is usually low, which has a certain impact on the activity of microorganisms and the efficiency of sewage treatment. Therefore, the design of the preheating system is crucial. The function is to increase the temperature of sewage through the coordinated work of two energy sources, solar energy and geothermal energy, to achieve the purpose of increasing microbial activity and accelerating biodegradation. The optimized design of the system can improve the treatment efficiency in cold environments and ensure that sewage can be treated smoothly.

[0096] Solar radiation intensity Hs is the solar radiation energy received per square meter per unit time, usually expressed in watts per square meter (W / m 2 ) as a unit. In cold and high altitude areas, the intensity of solar radiation is usually high, especially in the early morning and evening, when solar radiation is relatively concentrated. The solar radiation intensity Hs is the main source of energy collected by the solar collector. The efficiency and area (Rs) of the solar collector together determine the amount of heat obtained by the system. In this formula, Hs·Rs represents the total amount of heat energy obtained by the solar collection system from solar radiation. The larger this amount, the better the sewage preheating effect.

[0097] The solar collector area Rs is the area of ​​the solar collector, usually in square meters (m 2 ) as a unit. The larger the collection area, the more solar energy can be collected. Rs directly affects the system's heat collection capacity. In high-cold areas, due to the long period of short sunshine, the collection area needs to be designed to be larger to ensure sufficient heat energy. In cold areas, by appropriately increasing the collection area, the efficiency of the solar collector can be improved, thereby increasing the preheating temperature of the sewage.

[0098] Geothermal thermal conductivity Kg is an important parameter of geothermal energy exchanger, which indicates the heat conduction capacity of geothermal energy through soil or rock. It reflects the heat transfer efficiency of geothermal source. In high-altitude and cold areas, geothermal energy is a very effective energy source. Geothermal thermal conductivity Kg determines the efficiency of geothermal energy transfer from underground to water bodies.

[0099] The temperature gradient (Gt) and thermal conductivity (Kg) of the geothermal resource determine the effectiveness of the geothermal system. Generally, the higher the temperature of the geothermal source, the Kg will also affect the efficiency of heat transfer. The geothermal temperature gradient Gt represents the change in geothermal temperature within a unit depth range, usually in degrees Celsius per meter (℃ / m). It reflects the potential of the geothermal resource. At high altitudes, the geothermal temperature gradient is larger, indicating that the geothermal temperature changes more significantly with increasing depth. Gt and Kg together affect the amount of geothermal energy obtained, so the local geothermal resource characteristics need to be considered during design to ensure that the system can effectively utilize geothermal energy.

[0100] The specific heat capacity of water, Cw, indicates the amount of heat that a unit mass of water needs to absorb or release when the unit temperature changes. The specific heat capacity of water is usually 4.18 kJ / kg·℃ at room temperature. Cw affects the heating efficiency of sewage. The larger the specific heat capacity, the more heat is required per unit water volume. Therefore, in high-altitude cold areas, due to the fixed characteristics of the specific heat capacity of water, sufficient heat must be provided to raise the water temperature to the required level.

[0101] The water volume Vw is the volume of water in the wastewater treatment system that needs to be heated. The larger the water volume, the more heating energy is required. Vw determines the total amount of water in the wastewater system and therefore affects the energy requirement of the entire preheating process. By properly designing the system capacity (e.g. the water volume of the reactor), the size of the heating system can be adjusted more accurately to ensure sufficient heat energy is provided.

[0102] The altitude correction factor βh is used to correct the effect of altitude on atmospheric pressure and temperature. As altitude increases, atmospheric pressure decreases, and temperature changes also affect the heat transfer process. The exponential term in the formula This reflects the inhibitory effect of altitude on the heating system. As the altitude increases, the preheating effect will be inhibited because the boiling point of water will also decrease when the air pressure is lower, and the heat transfer efficiency will decrease.

[0103] The atmospheric pressure correction factor P is used to compensate for the effect of atmospheric pressure on the heating system. At high altitudes, due to the lower air pressure, the boiling point of water will also be lower, which affects the water heating process. P is a key parameter that affects the efficiency of heat transfer. Usually, with the increase of altitude, the P value increases, and the preheated water temperature Tp will decrease.

[0104] In summary, this formula reflects how to provide effective preheating treatment for domestic sewage in cold and high-altitude areas by combining two energy sources: solar energy and geothermal energy.

[0105] The combination of solar heat collection and geothermal energy exchange provides sufficient heat through effective heat collection area and thermal conductivity. The influence of altitude and atmospheric pressure: The altitude correction factor and atmospheric pressure correction factor in high altitude areas indicate that with the increase of altitude, the change of temperature and pressure will inhibit the preheating effect, so it is necessary to improve the energy conversion efficiency through reasonable design.

[0106] The present invention provides an accurate preheating temperature calculation model for domestic sewage treatment systems in high-cold and high-altitude areas. By effectively designing a solar and geothermal dual-energy coupling system and combining local environmental factors (such as altitude, atmospheric pressure, geothermal resources, etc.), the preheating effect of sewage can be significantly improved, thereby promoting microbial activity and pollutant degradation efficiency in subsequent treatment processes. This optimized design is crucial to ensure efficient sewage treatment.

[0107] Step 202: Perform oxygen enrichment treatment on the wastewater to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the wastewater to be treated.

[0108] In some embodiments, step 202 may include:

[0109] installing a pressure fluctuation device in the aeration device of the reactor;

[0110] By adjusting the pressure fluctuation frequency, the dissolution efficiency of oxygen in the sewage to be treated is enhanced;

[0111] The aeration volume and pressure fluctuation parameters are monitored in real time and automatically adjusted to obtain the dissolved oxygen concentration of the sewage to be treated.

[0112] In some embodiments, dissolved oxygen concentration is calculated by:

[0113] Obtain oxygen partial pressure under standard atmospheric pressure;

[0114] Obtaining the height correction factor, pressure fluctuation frequency, time, and standard temperature of the environment where the sewage to be treated is located;

[0115] The dissolved oxygen concentration is determined according to the oxygen partial pressure under the standard atmospheric pressure, the altitude correction factor, the pressure fluctuation frequency, the time, and the standard temperature of the environment where the sewage to be treated is located.

[0116] In some embodiments, the dissolved oxygen concentration may be expressed as:

[0117]

[0118] Wherein, Do is the dissolved oxygen concentration, Po is the oxygen partial pressure under standard atmospheric pressure, γh is the altitude correction factor, ω is the pressure fluctuation frequency, t is the time, and To is the standard temperature.

[0119] Specifically, dissolved oxygen concentration Do is the amount of oxygen dissolved in water, usually in milligrams per liter (mg / L). In the sewage treatment process, dissolved oxygen is a necessary condition for microbial metabolic activity, which directly affects the activity of microorganisms and their ability to degrade pollutants. Its function is to calculate the dissolved oxygen concentration under different conditions in order to optimize the sewage treatment process, ensure the good growth of microorganisms and the effective degradation of pollutants.

[0120] Oxygen partial pressure Po refers to the partial pressure of oxygen under standard atmospheric pressure, usually the pressure component of oxygen under 1 atmosphere. Under standard atmospheric pressure, the oxygen partial pressure is close to 0.21atm (21% of oxygen). Po is a constant used to represent the oxygen concentration under ideal climatic conditions. It is the benchmark for calculating dissolved oxygen concentration and is used as a reference point. In actual environments, it will be adjusted according to factors such as altitude and air pressure.

[0121] The altitude correction factor γh is used to adjust the effect of changes in air pressure on oxygen partial pressure caused by altitude. As altitude increases, atmospheric pressure decreases and oxygen partial pressure decreases. γh is used to quantify this change and is usually proportional to altitude. As altitude increases, the decrease in air pressure and oxygen partial pressure can significantly affect the concentration of dissolved oxygen. Therefore, by correcting for γh, oxygen concentrations at high altitudes can be calculated more accurately.

[0122] The atmospheric pressure correction factor P reflects the correction effect of atmospheric pressure on oxygen partial pressure. In high altitude areas, the air pressure is lower, which causes the oxygen partial pressure to decrease, affecting the dissolved oxygen concentration in the sewage. The larger the P value, the stronger the effect of atmospheric pressure on oxygen partial pressure. The oxygen partial pressure can be adjusted according to the actual altitude.

[0123] The pressure fluctuation frequency ω represents the rate of change of pressure fluctuations in the oxygen supply system. In some sewage treatment processes, periodic pressure fluctuations may be applied to promote the dissolution of oxygen and thus increase the oxygen concentration. ω is used to describe the periodic changes of these fluctuations. The sin(ωt) term reflects the periodic fluctuations of oxygen concentration over time. Increasing the volatility of dissolved oxygen helps to improve the activity of microorganisms.

[0124] Time t is used to describe the law of oxygen concentration change over time. Due to changes in the external environment (such as temperature, pressure, etc.), the dissolved oxygen concentration will also fluctuate over time. The sin(ωt) term represents the fluctuation of oxygen concentration within a certain period, which is helpful in simulating the dynamic changes of oxygen in sewage treatment systems in practical applications.

[0125] The standard temperature To is a constant, usually taken as 298K (25℃), which represents the temperature under standard conditions. It indicates the ratio of the actual water temperature (Tp) to the standard temperature (To). Since water temperature has a significant effect on the solubility of dissolved oxygen, the concentration of dissolved oxygen in water is lower when the temperature is higher. The effect of water temperature change on oxygen solubility can be quantified.

[0126] Reflects the effect of water temperature on dissolved oxygen concentration. The dissolved oxygen concentration of water is inversely proportional to temperature, that is, the higher the water temperature, the lower the dissolved oxygen concentration. In practical applications, Tp represents the actual water temperature and To is the standard temperature. An increase in the ratio of the two indicates a higher temperature, which may lead to a decrease in oxygen solubility. In this formula, the temperature effect is amplified by an exponential relationship of 1.5, emphasizing the strong impact of temperature changes on dissolved oxygen concentration.

[0127] As the altitude increases, the air pressure and oxygen partial pressure decrease, resulting in a decrease in dissolved oxygen concentration. Through the γh and P parameters, reasonable corrections can be made to adapt to the special environment of high altitude areas.

[0128] Through periodic pressure fluctuations (sin(ωt) term), the concentration of dissolved oxygen can be further increased, thereby promoting the metabolism of microorganisms. Water temperature is an important factor affecting the concentration of dissolved oxygen. Higher water temperature usually reduces the solubility of oxygen in water, so it is necessary to optimize the oxygen concentration by properly controlling the water temperature.

[0129] In high-altitude and cold regions, the dissolved oxygen concentration is often lower than that in standard environments due to low air pressure, low temperature, and reduced oxygen caused by altitude. By precisely adjusting the various parameters in the formula, the dissolved oxygen concentration can be dynamically optimized to ensure that microorganisms can perform degradation reactions in the best environment, thereby improving sewage treatment efficiency.

[0130] The present invention accurately calculates the dissolved oxygen concentration in the sewage treatment system in high-cold and high-altitude areas by considering factors such as altitude, air pressure, temperature, and oxygen fluctuations. In these areas, the oxygen solubility is usually low, so it is necessary to adjust and optimize the dissolved oxygen concentration through reasonable system design to promote the activity of microorganisms and the efficient sewage treatment.

[0131] Step 203: Perform biological activity enhancement treatment on the wastewater to be treated according to the dissolved oxygen concentration to determine the biological activity index of the wastewater to be treated.

[0132] In some embodiments, step 203 may include:

[0133] Obtaining the basic growth rate of microorganisms in the sewage to be treated;

[0134] Obtaining the standard dissolved oxygen concentration required for the microbial metabolism process under standard conditions;

[0135] Obtaining a temperature sensitivity coefficient describing the degree of influence of temperature change on the biological activity index, and a critical temperature of the microbial activity;

[0136] Obtaining the altitude suppression factor of the influence degree of altitude on the biological activity index, the current altitude of the sewage to be treated, and the maximum adaptation altitude;

[0137] The biological activity index of the sewage to be treated is determined according to the basic growth rate, the standard dissolved oxygen concentration, the temperature sensitivity coefficient, the critical temperature, the impact degree altitude suppression factor, the current altitude and the maximum adaptation altitude.

[0138] In some embodiments, the biological activity index of the sewage to be treated can be expressed as:

[0139]

[0140] Among them, Ba is the biological activity index, μ is the basic growth rate, Do is std is the standard dissolved oxygen concentration, δ is the temperature sensitivity coefficient, Tc is the critical temperature, η is the altitude suppression factor, h is the current altitude, and h max The maximum adaptability altitude.

[0141] In specific implementation, Ba is used to measure the activity of microorganisms under specific environmental conditions. It is a key indicator that affects the ability of microorganisms to degrade pollutants during sewage treatment. In high-altitude and cold areas, environmental conditions have a significant impact on the activity of microorganisms, especially dissolved oxygen concentration, temperature and altitude. Therefore, the dynamic changes of this index can accurately reflect the adaptability of microorganisms under different environmental conditions.

[0142] μ is the basic growth rate, which indicates the natural growth rate of microorganisms under standard environmental conditions. The basic growth rate μ is a preliminary parameter for evaluating microbial activity, which is closely related to factors such as the type of microorganism, the habitat, and the nutrients required. In high-altitude and cold environments, the basic growth rate of microorganisms is usually low because the temperature is low, the dissolved oxygen content of the water may be insufficient, and the high air pressure at altitude will also affect the activity of microorganisms.

[0143] Dissolved oxygen concentration Do is the oxygen concentration required for microbial metabolism. This parameter directly affects the growth and reproduction of microorganisms. Standard dissolved oxygen concentration Do std It is the oxygen concentration measured under standard conditions (usually normal temperature and sea level atmospheric pressure). It is used to quantify the ratio of oxygen concentration under specific environmental conditions to that under standard conditions. This ratio directly affects the activity of microorganisms, especially in high-altitude and cold regions where oxygen is relatively scarce.

[0144] When Do is greater than Do std When Do is less than Do stdWhen the microbial activity is inhibited. It indicates the nonlinear effect of oxygen concentration on the bioactivity index. The higher the dissolved oxygen concentration, the higher the bioactivity index of microorganisms.

[0145] The parameter δ is the temperature sensitivity coefficient, which describes the degree of influence of temperature changes on the biological activity index of microorganisms. Since temperature has a significant effect on microbial growth, especially in high-altitude cold areas, low temperature will significantly inhibit the activity of microorganisms. The critical temperature Tc is a threshold temperature for microbial activity. When the temperature is lower than the critical temperature, the growth of microorganisms almost stops, or their activity is significantly reduced.

[0146] The exponential term e in the formula δ(Tp-Tc) It reflects the nonlinear effect of temperature change on microbial growth.

[0147] When Tp>Tc, the bioactivity index increases with the temperature. When Tp≤Tc, the bioactivity index drops sharply.

[0148] Among them, Tp is the current temperature of the water body. By adjusting the water temperature (such as preheating the water temperature through a solar and geothermal dual-energy coupling system), the biological activity of microorganisms can be improved. Temperature changes are particularly important for sewage treatment in high-altitude and cold regions.

[0149] The altitude inhibition factor η indicates the degree of influence of altitude on the bioactivity index of microorganisms. As the altitude increases, the air pressure decreases, the oxygen concentration decreases, and the growth of microorganisms is inhibited.

[0150] The current altitude h represents the actual altitude of the processing system. The maximum adaptation altitude h max It indicates the highest altitude to which the microbial system can adapt. Above this altitude, the activity of the microorganisms will be significantly inhibited.

[0151] Terms in formulas It is used to reflect the inhibitory effect of altitude on microbial activity. As the altitude increases, h increases, and the value of this item gradually decreases, and may eventually approach zero, indicating that the microbial activity is close to stopping.

[0152] In general, the various parameters and terms in the formula work together to reflect the effects of environmental factors such as temperature, dissolved oxygen and altitude on the biological activity of microorganisms in high-altitude and cold areas:

[0153] The ratio of dissolved oxygen concentration to standard concentration affects microbial activity. Temperature affects the growth rate of microorganisms through sensitivity coefficient and critical temperature. Altitude has an inhibitory effect on microbial activity, especially in high altitude areas with low air pressure and insufficient oxygen.

[0154] The biological activity index formula can help understand and predict how the activity of microorganisms changes under extreme environmental conditions, thereby providing theoretical support and technical basis for sewage treatment in cold and high-altitude areas.

[0155] The present invention scientifically characterizes the biological activity of microorganisms in high-cold and high-altitude areas through the combined effects of multiple factors (dissolved oxygen, temperature, altitude, etc.). By precisely controlling these factors, the activity of microorganisms in the sewage treatment process can be effectively improved, and the treatment effect can be improved, especially in special environments with low oxygen, low temperature and high altitude.

[0156] Step 204: Perform pollutant degradation treatment according to the biological activity index of the sewage to be treated, and determine the degradation rate of the sewage to be treated.

[0157] In some embodiments, step 204 may include:

[0158] Obtaining the oxygen utilization coefficient of the influence of oxygen concentration on the degradation rate of pollutants, and the temperature influence coefficient of the influence of temperature on the degradation rate of pollutants;

[0159] Obtain the time decay coefficient of the pollutant degradation rate decaying over time;

[0160] Obtain the concentration influence factor of the pollutant concentration on the degradation rate;

[0161] Obtaining the current pollutant concentration of the wastewater to be treated and the initial pollutant concentration when the wastewater just enters the reactor;

[0162] The degradation rate of the sewage to be treated is determined according to the oxygen utilization coefficient, the temperature influence coefficient, the time attenuation coefficient, the concentration influence factor, the current pollutant concentration and the initial pollutant concentration.

[0163] In some embodiments, the degradation rate of the wastewater to be treated can be expressed as:

[0164]

[0165] Among them, Rd is the degradation rate, k1 is the oxygen utilization coefficient, k2 is the temperature influence coefficient, θ is the time attenuation coefficient, ρ is the concentration influence factor, C is the current pollutant concentration, and Co is the initial pollutant concentration.

[0166] In specific implementation, the degradation rate Rd represents the degradation rate of pollutants during sewage treatment and is a key indicator for measuring the effect of pollutant removal. In this scheme, Rd is determined by multiple factors, including biological activity index, oxygen concentration, temperature, time decay, pollutant concentration, etc. By accurately controlling the degradation rate, the efficiency of sewage treatment can be optimized, especially in high-altitude and cold areas, where environmental conditions have a significant impact on the treatment process.

[0167] Ba is the biological activity index, which indicates the activity level of microorganisms. Biological activity directly affects the ability of microorganisms to degrade pollutants. Generally, the higher the activity of microorganisms, the higher the degradation rate. In high-altitude and cold areas, factors such as temperature, dissolved oxygen and altitude will affect the growth and metabolism of microorganisms. Therefore, adjusting Ba can improve the effect of sewage treatment.

[0168] The oxygen utilization coefficient k1 indicates the degree of influence of oxygen concentration on the degradation rate of pollutants. In the biodegradation process, oxygen is an important energy source for microbial metabolism and decomposition of pollutants. When the oxygen concentration is high, the activity of microorganisms is enhanced, thereby increasing the degradation rate. Specifically, the larger the k1, the greater the contribution of oxygen to the degradation of pollutants.

[0169] Oxygen concentration Do represents the concentration of dissolved oxygen in water. Generally speaking, the higher the oxygen concentration, the higher the degradation rate. Therefore, the k1·Do term reflects the promoting effect of oxygen on sewage treatment. In high-altitude and cold areas, due to the low oxygen concentration, the relationship between k1 and Do is particularly important.

[0170] Temperature has a significant effect on the growth and metabolism of microorganisms. At lower temperatures, the activity and degradation rate of microorganisms tend to be lower. The temperature influence coefficient k2 is used to quantify the effect of temperature changes on the degradation rate. Represents the temperature of the sewage, and higher temperatures generally accelerate the metabolic activity of microorganisms, thereby increasing the degradation rate. In alpine areas, the temperature is relatively low, and the k2·Tp term plays a key role. It can be seen from the k2·Tp term in the formula that an increase in temperature increases the degradation rate. The existence of this term indicates that the system can optimize the degradation process by adjusting the temperature, especially by achieving water temperature regulation through the dual-energy system of solar energy and geothermal energy, thereby enhancing microbial activity.

[0171] The time decay coefficient θ represents the decay of the pollutant degradation rate over time. Generally, as the degradation process continues, the concentration of the pollutant gradually decreases and the degradation rate gradually slows down.

[0172] t is the time of the degradation process. The exponential decay term in the formula reflects that in the long-term degradation process, due to the decrease in pollutant concentration and the gradual slowing of microbial metabolism, the degradation rate will gradually decrease.

[0173] This item reflects the dynamic changes of sewage treatment, that is, as time goes by, the degradation rate of pollutants is faster in the early stage, but as the concentration of pollutants decreases, the degradation rate gradually decreases. In order to improve the degradation efficiency, it is necessary to strengthen oxygen supply and temperature regulation in the early stage.

[0174] The concentration influence factor ρ reflects the effect of pollutant concentration on the degradation rate. Generally, the higher the pollutant concentration, the greater the metabolic demand of microorganisms, which may increase the degradation rate.

[0175] The current pollutant concentration C is the current concentration of pollutants in the wastewater. The initial pollutant concentration Co is the concentration of pollutants when they first enter the reactor. From the term, we can see that as the pollutant concentration increases, the degradation rate will also be affected. Generally speaking, when the pollutant concentration is high, the degradation rate will increase accordingly, but at the same time, the excessive concentration may also cause the microbial burden to be too heavy, resulting in a decrease in activity. Therefore, this term can also help regulate the microbial load during the degradation process.

[0176] Oxygen concentration and temperature are the main factors affecting the degradation rate, especially in high-altitude and cold regions, where these two factors have a more significant impact on microbial activity and degradation. By effectively controlling dissolved oxygen and water temperature, the degradation rate can be significantly increased.

[0177] The time decay coefficient takes into account the characteristic that the degradation rate gradually decreases over time, indicating that in the initial stage of sewage treatment, the degradation rate is fast, but as the pollutant concentration decreases, the rate gradually slows down.

[0178] The concentration of pollutants also affects the degradation rate. Higher pollutant concentrations may lead to an increase in the degradation rate, but may also inhibit the growth of microorganisms, so timely adjustments are needed.

[0179] In cold and high altitude areas, the degradation rate is restricted by multiple factors, such as low temperature, thin oxygen, high altitude, etc., which will significantly affect the sewage treatment effect. By optimizing parameters such as k1, k2, θ, ρ, especially adjusting the oxygen concentration, temperature and pollutant concentration in the reactor, the degradation rate can be effectively improved to ensure the high efficiency of the sewage treatment process.

[0180] The present invention characterizes the rate change in the pollutant degradation process in detail by comprehensively considering multiple factors such as oxygen, temperature, time, and pollutant concentration. By adjusting key parameters (such as oxygen concentration, temperature, etc.), the sewage treatment effect in high-altitude and cold areas can be optimized, the degradation rate can be increased, and the efficient sewage treatment can be ensured.

[0181] Step 205: Optimize the efficiency of the reactor according to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the wastewater to be treated, and determine the total efficiency of the reactor.

[0182] In some embodiments, the overall efficiency of the reactor can be expressed as:

[0183]

[0184] Where Ef is the total efficiency of the reactor, Ba max is the maximum biological activity, and φ is the reactor synergy coefficient.

[0185] In specific implementation, the total efficiency Ef is an indicator to measure the performance of the entire sewage treatment system. It reflects the treatment effect of the system under the comprehensive action of various links in the treatment process (such as degradation rate, biological activity, oxygen concentration, etc.). In this scheme, the total efficiency of the reactor not only takes into account the degradation rate of pollutants, but also involves the comprehensive influence of multiple factors such as microbial activity, oxygen solubility and water temperature. Efficiency is a dynamic value. As the treatment process goes on and environmental conditions change, the system efficiency will change.

[0186] The degradation rate Rd represents the rate at which pollutants are degraded. In high-altitude and cold regions, the degradation rate is affected by factors such as temperature, dissolved oxygen concentration, and microbial activity. Rd is a variable that changes over time, so when calculating the total efficiency of the system, it is necessary to integrate the degradation rate (∫Rd dt) to obtain the cumulative degradation effect during the entire treatment process. This item reflects the ability of the sewage treatment system to degrade pollutants within a certain period of time. The longer the treatment time, the higher the degree of degradation of the pollutants may be.

[0187] Ba represents the activity level of microorganisms under specific environmental conditions, which directly affects the ability of microorganisms to degrade pollutants. Biological activity is closely related to factors such as dissolved oxygen concentration, temperature, and altitude.

[0188] Ba max It indicates the highest activity level that microorganisms can achieve under optimal environmental conditions. It represents the ratio of the biological activity of microorganisms under current environmental conditions to the maximum biological activity, reflecting the relative level of the activity of microorganisms in the current system compared with the activity under ideal conditions.

[0189] This ratio can be used to adjust the calculation of the overall system efficiency to ensure that the biological activity of microorganisms can be reasonably estimated under different environmental conditions (such as low temperature and low oxygen in high altitude areas). If Ba is low, it means that the microbial activity is limited, and the system efficiency may also be low.

[0190] The system synergy coefficient φ is an adjustment coefficient used to describe the synergy between various factors in the system. It indicates the effectiveness of the overall system collaboration under the conditions of changing oxygen concentration and water temperature. The role of φ is to amplify or reduce the impact of oxygen concentration and water temperature on system efficiency, affecting the overall performance of the system. For example, a higher φ value indicates that each treatment link in the system (such as the impact of oxygen and temperature on microbial activity) has a greater effect on improving the overall efficiency. Conversely, a lower φ value indicates that the synergy between the various links is weaker.

[0191] Dissolved oxygen concentration Do is the oxygen content in water, which directly affects the metabolic activity of microorganisms. In high-altitude and cold areas, the oxygen concentration is usually low, resulting in reduced microbial activity. Therefore, dissolved oxygen concentration is one of the key factors determining biodegradation efficiency.

[0192] Water temperature has a significant effect on the metabolic rate of microorganisms. Higher temperatures generally promote microbial activity, whereas lower temperatures inhibit the degradation ability of microorganisms. At high altitudes, the temperature is lower, so extra attention needs to be paid to the effect of water temperature on system efficiency.

[0193] 1-e -φ·Do·Tp This reflects the synergistic effect of dissolved oxygen concentration and water temperature on system efficiency:

[0194] When Do and Tp are high, biological activity is enhanced and system efficiency is improved. This item also shows that when the dissolved oxygen concentration and water temperature are low, the system efficiency will be inhibited because low oxygen and low temperature will limit the activity of microorganisms and reduce the degradation rate.

[0195] Since the degradation rate Rd is a time-varying variable, the overall efficiency of the system not only depends on the instantaneous degradation rate, but also needs to consider the cumulative effect over the entire time period of the sewage treatment process.

[0196] The integral term ∫Rd dt reflects the cumulative effect of pollutant degradation during the entire treatment process. As time goes by, pollutants in the sewage are gradually degraded, and the system efficiency will gradually increase until a certain treatment effect is achieved. This term comprehensively measures the effect of sewage treatment by accumulating the degradation rate, rather than relying solely on the treatment capacity at a certain moment.

[0197] pass This reflects the relative change in microbial activity, which further affects system efficiency. Biological activity is lower at high altitudes, low oxygen or low temperatures, so special attention needs to be paid to the impact of these environmental factors on efficiency.

[0198] The system synergy coefficient φ ensures that the effects of oxygen concentration and water temperature on the microbial degradation rate are appropriately amplified or reduced, thereby optimizing the operation effect of the overall system.

[0199] Oxygen and temperature are important factors in determining microbial activity and degradation rate, so the formula is 1-e -φ·Do·Tp The synergistic effects of these factors are taken into account.

[0200] By integrating the degradation rate over time, the continuous effect of the sewage treatment process is reflected.

[0201] In cold and high-altitude areas, due to low temperature and thin oxygen, the biological activity of microorganisms is usually low. Through this formula, the system efficiency can be adjusted according to the actual environmental conditions:

[0202] Under low temperature and low oxygen conditions, the biological activity of microorganisms is inhibited, so It may be lower, and the system efficiency will decrease accordingly.

[0203] By adjusting the synergy coefficient φ in the system, the effects of dissolved oxygen and temperature on system efficiency can be optimized, thereby improving the overall processing capacity of the system.

[0204] The present invention provides a method for dynamically calculating the total efficiency of the system, taking into account multiple factors such as degradation rate, biological activity, oxygen concentration, temperature, etc. By rationally adjusting the system parameters, especially in cold and high-altitude areas, the overall efficiency of the sewage treatment system can be effectively improved, ensuring the efficient degradation of pollutants and promoting the activity of microorganisms in specific environments.

[0205] Step 206: According to the total efficiency of the reactor, combined with the inlet temperature, dissolved oxygen concentration and biological activity index of the wastewater to be treated, the reactor is controlled and optimized to determine the control parameters of the reactor.

[0206] Specifically, the reactor control system can adjust the heat source (such as solar energy and geothermal dual energy coupling preheating system) according to the inlet water temperature Tp to increase the inlet water temperature and achieve the best treatment effect. If Tp is too low, the system will start the heating mode; if Tp is too high, the system may need to adjust the water flow rate or cooling measures to avoid excessive temperature affecting the growth of microorganisms in the reactor.

[0207] The control system of the reactor will automatically adjust parameters such as bubble aeration and pressure fluctuation frequency (ω) according to the dissolved oxygen concentration Do to maintain the optimal oxygen concentration. If Do is lower than the set threshold, the system will increase the oxygen supply to increase Do by increasing the oxygen partial pressure or optimizing the gas flow to ensure that the metabolic needs of the microorganisms are met.

[0208] The reactor control system needs to optimize biological activity by adjusting Do and Tp to ensure that the microbial activity index Ba reaches or is close to the maximum biological activity. In addition, if Ba is found to be lower than the expected value, the system can also improve activity by adjusting the altitude inhibition factor or introducing cold-resistant microorganisms that are more adapted to the environment.

[0209] In order to ensure that the reactor can operate efficiently under various environmental conditions, the control system must dynamically adjust the reactor operating parameters based on the inlet water temperature, dissolved oxygen concentration and biological activity index:

[0210] Inlet water temperature (Tp) control: Ensure that the temperature is regulated through solar and geothermal preheating systems to be in the range most suitable for microbial activity.

[0211] Dissolved oxygen concentration (Do) control: By intelligently adjusting parameters such as the aeration system and pressure fluctuation frequency, dissolved oxygen is maintained within the ideal range to support microbial metabolism and pollutant degradation.

[0212] Biological activity (Ba) control: By monitoring and adjusting dissolved oxygen, temperature and other conditions, the microbial activity index is optimized to ensure that the microorganisms are in the best degradation state. If necessary, more adaptable microorganisms are added, or biological activity enhancement measures based on temperature and altitude corrections are used.

[0213] Based on the inlet water temperature, dissolved oxygen concentration and biological activity index, the reactor control system will automatically calculate and adjust the following parameters:

[0214] Temperature adjustment parameters (such as heating power, cooling system, etc.) ensure that the water temperature is within the optimal range. Oxygen adjustment parameters (such as aeration volume, oxygen partial pressure, etc.) maintain the appropriate dissolved oxygen concentration. Microbial culture parameters (such as microbial population and activity index) improve microbial activity by optimizing environmental conditions.

[0215] The reactor's control system has a dynamic feedback function that can monitor temperature, dissolved oxygen concentration and biological activity index in real time and adjust control parameters in a timely manner. If the system detects that a parameter deviates from the expected value (for example, dissolved oxygen is too low or water temperature is too low), the system will automatically adjust the corresponding operating parameters, such as increasing oxygen supply or heating water, to ensure that the reactor is always in the best operating state.

[0216] The present invention can ensure that the reactor can maintain efficient sewage treatment effect in the harsh environment of high-cold and high-altitude areas by real-time monitoring and control optimization of the reactor according to the inlet water temperature, dissolved oxygen concentration and biological activity index. Dynamic adjustment of reactor parameters not only improves the treatment efficiency of the system, but also extends the service life of the equipment, ensuring the stability and sustainability of the treatment process.

[0217] See also Figure 3 , Figure 3 This is a structural schematic diagram of a domestic sewage treatment system for high-cold and high-altitude areas provided by the present invention.

[0218] like Figure 3As shown, a domestic sewage treatment system in a high-cold and high-altitude area proposed in an embodiment of the present invention includes:

[0219] The temperature determination module 301 is used to perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the inlet temperature of the sewage to be treated entering the reactor;

[0220] The oxygen enrichment treatment module 302 is used to perform oxygen enrichment treatment on the wastewater to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the wastewater to be treated;

[0221] The activity enhancement module 303 is used to perform biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration to determine the biological activity index of the sewage to be treated;

[0222] The degradation treatment module 304 is used to perform pollutant degradation treatment according to the biological activity index of the sewage to be treated and determine the degradation rate of the sewage to be treated;

[0223] The efficiency optimization module 305 is used to optimize the efficiency of the reactor according to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the wastewater to be treated, and determine the total efficiency of the reactor;

[0224] The control optimization module 306 is used to perform control optimization processing on the reactor according to the total efficiency of the reactor in combination with the inlet temperature, dissolved oxygen concentration and biological activity index of the wastewater to be treated, and determine the control parameters of the reactor.

[0225] See also Figure 4 , Figure 4 Schematic diagram of an electronic device provided by an embodiment of the present invention. Figure 4 As shown, an embodiment of the present invention provides an electronic device 400, including a memory 410, a processor 420, and a computer program 411 stored in the memory 410 and executable on the processor 420. When the processor 420 executes the computer program 411, the following steps are implemented:

[0226] Perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the water inlet temperature of the sewage to be treated entering the reactor;

[0227] Performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the sewage to be treated;

[0228] Performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration to determine the biological activity index of the sewage to be treated;

[0229] Performing pollutant degradation treatment according to the biological activity index of the sewage to be treated, and determining the degradation rate of the sewage to be treated;

[0230] According to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the sewage to be treated, the reactor is subjected to efficiency optimization treatment to determine the overall efficiency of the reactor;

[0231] According to the total efficiency of the reactor, combined with the inlet temperature, dissolved oxygen concentration and biological activity index of the sewage to be treated, the reactor is controlled and optimized to determine the control parameters of the reactor.

[0232] See also Figure 5 , Figure 5 A schematic diagram of an embodiment of a computer-readable storage medium provided in an embodiment of the present invention. Figure 5 As shown, this embodiment provides a computer-readable storage medium 500, on which a computer program 411 is stored. When the computer program 411 is executed by a processor, the following steps are implemented:

[0233] Perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the water inlet temperature of the sewage to be treated entering the reactor;

[0234] Performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the sewage to be treated;

[0235] Performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration to determine the biological activity index of the sewage to be treated;

[0236] Performing pollutant degradation treatment according to the biological activity index of the sewage to be treated, and determining the degradation rate of the sewage to be treated;

[0237] According to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the sewage to be treated, the reactor is subjected to efficiency optimization treatment to determine the overall efficiency of the reactor;

[0238] According to the total efficiency of the reactor, combined with the inlet temperature, dissolved oxygen concentration and biological activity index of the sewage to be treated, the reactor is controlled and optimized to determine the control parameters of the reactor.

[0239] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0240] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0241] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A system that specifies the functions of a box or multiple boxes.

[0242] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction system, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0243] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0244] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0245] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for treating domestic sewage in cold and high altitude areas, characterized in that: The method comprises: Perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the water inlet temperature of the sewage to be treated entering the reactor; Performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the sewage to be treated; Performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration to determine the biological activity index of the sewage to be treated; Performing pollutant degradation treatment according to the biological activity index of the sewage to be treated, and determining the degradation rate of the sewage to be treated; According to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the sewage to be treated, the reactor is subjected to efficiency optimization treatment to determine the overall efficiency of the reactor; According to the total efficiency of the reactor, combined with the inlet temperature, dissolved oxygen concentration and biological activity index of the sewage to be treated, the reactor is controlled and optimized to determine the control parameters of the reactor.

2. The method for treating domestic sewage in cold and high altitude areas according to claim 1, characterized in that: The method of preheating the sewage to be treated by coupling solar energy and geothermal energy to determine the inlet temperature of the sewage to be treated entering the reactor includes: A solar heat collecting panel and a geothermal heat exchanger are arranged at the water inlet end of the reactor; The solar radiation energy is converted into thermal energy by the solar heat collecting panel, and the geothermal energy is collected from underground by the geothermal heat exchanger; The collected heat energy is transferred to the water inlet through a heat exchange device to preheat the sewage to be treated; The ratio of heat collection by the solar thermal collector and heat exchange by the geothermal heat exchanger is dynamically adjusted according to the ambient temperature and the current temperature of the sewage to be treated.

3. The method for treating domestic sewage in cold and high altitude areas according to claim 2, characterized in that: The inlet water temperature is calculated as follows: Obtaining solar radiation intensity and the heat collection area of ​​the solar heat collecting panel; Obtaining the geothermal thermal conductivity and geothermal temperature gradient of the geothermal heat exchanger; Obtaining the water specific heat capacity, water volume, altitude and atmospheric pressure correction coefficient of the sewage to be treated; The water inlet temperature is determined based on the solar radiation intensity, the collection area of ​​the solar collector panel, the geothermal thermal conductivity of the geothermal heat exchanger, the geothermal temperature gradient, the water specific heat capacity of the sewage to be treated, the water volume, and the altitude and atmospheric pressure correction coefficient of the environment.

4. The method for treating domestic sewage in cold and high altitude areas according to claim 3, characterized in that: The inlet water temperature is expressed as: Among them, Tp is the inlet water temperature after preheating, Hs is the solar radiation intensity, Rs is the collection area of ​​the solar collector, Kg is the geothermal thermal conductivity of the geothermal heat exchanger, Gt is the geothermal temperature gradient, Cw is the specific heat capacity of water, Vw is the water volume, βh is the altitude, and P is the atmospheric pressure correction factor.

5. The method for treating domestic sewage in cold and high altitude areas according to claim 4, characterized in that: The step of performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature to determine the dissolved oxygen concentration of the sewage to be treated includes: installing a pressure fluctuation device in the aeration device of the reactor; By adjusting the pressure fluctuation frequency, the dissolution efficiency of oxygen in the sewage to be treated is enhanced; The aeration volume and pressure fluctuation parameters are monitored in real time and automatically adjusted to obtain the dissolved oxygen concentration of the sewage to be treated.

6. The method for treating domestic sewage in cold and high altitude areas according to claim 5, characterized in that: The dissolved oxygen concentration is calculated as follows: Obtain oxygen partial pressure under standard atmospheric pressure; Obtaining the height correction factor, pressure fluctuation frequency, time, and standard temperature of the environment where the sewage to be treated is located; The dissolved oxygen concentration is determined according to the oxygen partial pressure under the standard atmospheric pressure, the altitude correction factor, the pressure fluctuation frequency, the time, and the standard temperature of the environment where the sewage to be treated is located.

7. The method for treating domestic sewage in cold and high altitude areas according to claim 6, characterized in that: The dissolved oxygen concentration is expressed as: Wherein, Do is the dissolved oxygen concentration, Po is the oxygen partial pressure under standard atmospheric pressure, γh is the altitude correction factor, ω is the pressure fluctuation frequency, t is the time, and To is the standard temperature.

8. The method for treating domestic sewage in cold and high altitude areas according to claim 7, characterized in that: The step of performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration to determine the biological activity index of the sewage to be treated includes: Obtaining the basic growth rate of microorganisms in the sewage to be treated; Obtaining the standard dissolved oxygen concentration required for the microbial metabolism process under standard conditions; Obtaining a temperature sensitivity coefficient describing the degree of influence of temperature change on the biological activity index, and a critical temperature of the microbial activity; Obtaining the altitude suppression factor of the influence degree of altitude on the biological activity index, the current altitude of the sewage to be treated, and the maximum adaptation altitude; The biological activity index of the sewage to be treated is determined according to the basic growth rate, the standard dissolved oxygen concentration, the temperature sensitivity coefficient, the critical temperature, the impact degree altitude suppression factor, the current altitude and the maximum adaptation altitude.

9. The method for treating domestic sewage in cold and high altitude areas according to claim 8, characterized in that: The step of performing pollutant degradation treatment according to the biological activity index of the sewage to be treated and determining the degradation rate of the sewage to be treated comprises: Obtaining the oxygen utilization coefficient of the influence of oxygen concentration on the degradation rate of pollutants, and the temperature influence coefficient of the influence of temperature on the degradation rate of pollutants; Obtain the time decay coefficient of the pollutant degradation rate decaying over time; Obtain the concentration influence factor of the pollutant concentration on the degradation rate; Obtaining the current pollutant concentration of the wastewater to be treated and the initial pollutant concentration when the wastewater just enters the reactor; The degradation rate of the sewage to be treated is determined according to the oxygen utilization coefficient, the temperature influence coefficient, the time attenuation coefficient, the concentration influence factor, the current pollutant concentration and the initial pollutant concentration.

10. A domestic sewage treatment system for high-cold and high-altitude areas, characterized in that: The system comprises: The temperature determination module is used to perform solar energy and geothermal dual energy coupling preheating treatment on the sewage to be treated, and determine the water inlet temperature of the sewage to be treated entering the reactor; an oxygen enrichment treatment module, used for performing oxygen enrichment treatment on the sewage to be treated according to the inlet water temperature, and determining the dissolved oxygen concentration of the sewage to be treated; An activity enhancement module, used for performing biological activity enhancement treatment on the sewage to be treated according to the dissolved oxygen concentration, and determining the biological activity index of the sewage to be treated; A degradation treatment module, used to perform pollutant degradation treatment according to the biological activity index of the sewage to be treated and determine the degradation rate of the sewage to be treated; An efficiency optimization module, used to perform efficiency optimization processing on the reactor according to the inlet temperature, dissolved oxygen concentration, biological activity index and degradation rate of the sewage to be treated, and determine the overall efficiency of the reactor; The control optimization module is used to perform control optimization processing on the reactor according to the total efficiency of the reactor in combination with the inlet temperature, dissolved oxygen concentration and biological activity index of the sewage to be treated, and determine the control parameters of the reactor.

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