Energy-saving and consumption-reducing wastewater treatment method, device and storage medium

Abstract

The application provides an energy-saving and cost-reducing sewage treatment method, device and storage medium, relates to the field of sewage treatment, and comprises the following steps: judging whether the total nitrogen concentration is greater than a first threshold value; if the total nitrogen concentration is greater than the first preset threshold value, determining the nitrogen form according to the nitrate nitrogen concentration and the ammonia nitrogen concentration; wherein the nitrogen form comprises a first nitrogen form, a second nitrogen form and other forms, the first nitrogen form is a form mainly composed of nitrate nitrogen, and the second nitrogen form is a form mainly composed of ammonia nitrogen; if the nitrogen form is the first nitrogen form or the second nitrogen form, the air volume of a fan or the dosing amount of a carbon source dosing system is adjusted until the nitrogen form is the other form, wherein the carbon source dosing system is used for providing carbon source medicaments for an anaerobic tank, and the fan is used for providing oxygen for an aeration device in an aerobic tank. The application can treat nitrogen elements in sewage, reduce the consumption of medicaments and energy consumption, and achieve the purpose of energy saving and cost reduction.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment, and in particular to an energy-saving and consumption-reducing wastewater treatment method, equipment, and storage medium. Background Technology

[0002] Wastewater treatment plants effectively remove harmful substances from wastewater through physical, chemical, and biological treatment processes. After purifying the wastewater to meet national discharge standards, it is safely discharged into rivers, lakes, oceans, and other water bodies, reducing damage to aquatic ecosystems and biodiversity, and helping to restore and maintain the ecological balance of water bodies.

[0003] Wastewater treatment plants in my country (especially those along the Yangtze River) generally suffer from low concentrations of pollutants in the influent and insufficient carbon sources, requiring the addition of external carbon sources, which leads to high energy and chemical consumption.

[0004] In response to the above-mentioned shortcomings, there is an urgent need for an energy-saving and consumption-reducing wastewater treatment method, equipment, and storage medium that can solve the problem of high energy and chemical consumption in existing wastewater treatment processes. Summary of the Invention

[0005] This application provides an energy-saving and consumption-reducing wastewater treatment method, equipment, and storage medium to solve the problem of high energy and chemical consumption in some wastewater treatment processes.

[0006] In a first aspect, this application provides an energy-saving and consumption-reducing wastewater treatment method, comprising:

[0007] The system determines whether the total nitrogen concentration is greater than a first threshold. If the total nitrogen concentration is greater than the first preset threshold, the nitrogen form is determined based on the nitrate nitrogen concentration and the ammonia nitrogen concentration. The total nitrogen concentration, nitrate nitrogen concentration, and ammonia nitrogen concentration are obtained by a total nitrogen sensor, a nitrate sensor, and an ammonia nitrogen sensor, respectively, at the outlet of the secondary sedimentation tank or the aerobic tank. The nitrogen form includes a first nitrogen form, a second nitrogen form, and other forms. The first nitrogen form is predominantly nitrate nitrogen, the second nitrogen form is predominantly ammonia nitrogen, and the other forms are forms other than the first and second nitrogen forms.

[0008] If the nitrogen form is the first nitrogen form or the second nitrogen form, the air volume of the blower or the dosage of the carbon source dosing system is adjusted until the nitrogen form is the other form. The carbon source dosing system is used to provide carbon source agents to the anaerobic tank, and the blower is used to provide oxygen to the aeration device in the aerobic tank.

[0009] In one possible design, determining the nitrogen form based on the nitrate nitrogen concentration and the ammonia nitrogen concentration includes:

[0010] If the first percentage of the nitrate nitrogen concentration to the total nitrogen concentration is greater than the first preset percentage, the nitrogen form is determined to be the first nitrogen form.

[0011] If the second percentage of the ammonia nitrogen concentration to the total nitrogen concentration is greater than the second preset percentage, the nitrogen form is determined to be the second nitrogen form.

[0012] If the conditions for determining it as both the first nitrogen form and the second nitrogen form are not met simultaneously, the nitrogen form is determined to be another form.

[0013] In one possible design, if the nitrogen form is the first nitrogen form, adjusting the airflow of the fan or the dosage of the carbon source dosing system until the nitrogen form is one of the other forms includes:

[0014] By increasing the dosage and decreasing the fan airflow until the nitrogen form is the other form.

[0015] In one possible design, if the nitrogen form is the second nitrogen form, adjusting the dosage of the fan or the carbon source dosing system until the nitrogen form is one of the other forms includes:

[0016] By increasing the airflow of the fan and decreasing the dosage, the nitrogen form is changed to the other form.

[0017] In one possible design, the method further includes:

[0018] If the total nitrogen concentration is not greater than the first preset threshold, the nitrogen form is determined to be another form.

[0019] In one possible design, if the nitrogen form is another form, the method further includes:

[0020] If the ammonia nitrogen concentration is less than the second preset threshold, reduce the air volume of the fan until the ammonia nitrogen concentration is not less than the second preset threshold.

[0021] In one possible design, before determining whether the total nitrogen concentration in the secondary sedimentation tank or at the outlet of the aerobic tank exceeds a first threshold, the method further includes:

[0022] Determine whether the total nitrogen concentration meets the standard. If it does not meet the standard, adjust the fan or the carbon source dosing system until the total nitrogen concentration meets the standard.

[0023] Determining whether the total nitrogen concentration meets the standard includes:

[0024] If the total nitrogen concentration is greater than the preset compliance threshold, the total nitrogen concentration is determined to be non-compliant; if the total nitrogen concentration is not greater than the preset compliance threshold, the total nitrogen concentration is determined to be compliant.

[0025] The step of adjusting the blower or the carbon source dosing system to achieve the required total nitrogen concentration includes:

[0026] If the ammonia nitrogen concentration is greater than the third preset threshold, the air volume of the fan is increased until the ammonia nitrogen concentration is no greater than the third preset threshold.

[0027] Determine whether the total nitrogen concentration is greater than a preset threshold. If it is greater than the preset threshold, increase the dosage of the carbon source dosing system until the total nitrogen concentration is no greater than the preset threshold.

[0028] Secondly, this application provides an energy-saving and consumption-reducing wastewater treatment device, the device comprising:

[0029] The judgment module is used to determine whether the total nitrogen concentration is greater than a first threshold value. If the total nitrogen concentration is greater than the first preset threshold value, the nitrogen form is determined based on the nitrate nitrogen concentration and the ammonia nitrogen concentration. The total nitrogen concentration, nitrate nitrogen concentration and ammonia nitrogen concentration are obtained by the total nitrogen sensor, nitrate sensor and ammonia nitrogen sensor respectively in the secondary sedimentation tank or at the outlet of the aerobic tank. The nitrogen form includes a first nitrogen form, a second nitrogen form and other forms.

[0030] The adjustment module is used to adjust the dosage of the blower or carbon source dosing system until the nitrogen form is the other form if the nitrogen form is the first nitrogen form or the second nitrogen form. The carbon source dosing system is used to provide carbon source agents to the anaerobic tank, and the blower is used to provide oxygen to the aeration device in the aerobic tank.

[0031] Thirdly, this application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0032] The memory stores computer-executed instructions;

[0033] The processor executes computer execution instructions stored in the memory to implement the aforementioned energy-saving and consumption-reducing wastewater treatment method.

[0034] Fourthly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the aforementioned energy-saving and consumption-reducing wastewater treatment method.

[0035] This application provides an energy-saving and consumption-reducing wastewater treatment method, equipment, and storage medium. When the total nitrogen concentration exceeds a first preset threshold, the nitrogen form is determined based on nitrate nitrogen and ammonia nitrogen concentrations. When the nitrogen form is a first or second nitrogen form, the nitrogen form is adjusted to another form by regulating a blower or carbon source dosing system. This achieves the following technical effects:

[0036] This application can treat nitrogen in wastewater according to its form, while reducing chemical and energy consumption, thereby achieving energy conservation and emission reduction. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A schematic diagram illustrating an application scenario of the energy-saving and consumption-reducing wastewater treatment method provided in the embodiments of this application;

[0039] Figure 2 A schematic flowchart of the energy-saving and consumption-reducing wastewater treatment method provided in the embodiments of this application. Figure 1 ;

[0040] Figure 3 A schematic flowchart of the energy-saving and consumption-reducing wastewater treatment method provided in the embodiments of this application. Figure 2 ;

[0041] Figure 4 A schematic diagram of the structure of an energy-saving and consumption-reducing wastewater treatment device provided in an embodiment of this application;

[0042] Figure 5 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application.

[0043] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments.

[0044] Explanation of reference numerals in the attached figures:

[0045] 101-Inlet pump; 102-Anaerobic tank; 103-Anoxic tank; 104-Aerobic tank; 105-Secondary sedimentation tank; 106-Control device; 107-Carbon source dosing system; 108-Blower; 109-Aeration device; 110-Ammonia nitrogen sensor; 111-Nitrate sensor; 112-Total nitrogen sensor;

[0046] 40 - Equipment; 401 - Judgment Module; 402 - Adjustment Module;

[0047] 50 - Electronic equipment; 501 - Processor; 502 - Memory; 503 - Communication components; 504 - Bus. Detailed Implementation

[0048] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of devices and methods consistent with some aspects of this application as detailed in the appended claims, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0049] It should be noted that, in the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0050] It should be noted that the terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0051] It should be noted that "at the time of..." in the embodiments of this application can be either at the instant when a certain situation occurs, or for a period of time after the occurrence of a certain situation. The embodiments of this application do not make specific limitations on this.

[0052] First, let's explain the terms used in this application:

[0053] Denitrification is a microbial-mediated biochemical process that primarily occurs in anaerobic environments, converting nitrates (NO3-) into nitrogenous substances. - ) and nitrite (NO2) - Nitrogen is reduced to gaseous nitrogen compounds (such as N2 and N2O) and released into the atmosphere as nitrogen gas. In wastewater treatment, by designing and operating anaerobic or anoxic treatment units, the growth of denitrifying bacteria and the denitrification reaction are promoted, achieving effective removal of nitrogen from wastewater to meet discharge standards or resource recovery requirements. The denitrification process is of great value for the nitrogen balance of ecosystems, wastewater treatment, and environmental protection.

[0054] Carbon source: refers to substances that provide carbon. These substances typically contain abundant carbon compounds that can be absorbed by organisms and converted into organic matter they need. In the denitrification process of wastewater treatment, organic carbon sources are needed as electron donors to remove nitrogen from wastewater. Organic carbon sources include methanol, sodium acetate, and glucose. In practical applications, the selection of a carbon source needs to consider factors such as its bioavailability, economics, environmental impact, and ease of application to ensure the efficiency, stability, and economy of the wastewater treatment process.

[0055] In the existing technology, sewage treatment plants in my country (especially those along the Yangtze River) generally suffer from low concentrations of pollutants in the influent and insufficient carbon sources in the influent, requiring the addition of external carbon sources, which leads to high energy and chemical consumption.

[0056] This application provides an energy-saving and consumption-reducing wastewater treatment method, which aims to solve the above-mentioned technical problems of the prior art.

[0057] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0058] Figure 1 This is a schematic diagram illustrating an application scenario of the energy-saving and consumption-reducing wastewater treatment method provided in the embodiments of this application; such as Figure 1 As shown, upstream water enters the anaerobic tank 102 through the inlet pump 101, passes through the anoxic tank 103 and the aerobic tank 104 in sequence, and enters the secondary sedimentation tank 105 from the aerobic tank 104.

[0059] Anaerobic tank 102 is used for anaerobic digestion in an anaerobic environment, converting complex organic matter in wastewater into simple organic matter, volatile fatty acids (VFAs), and biogas (mainly methane and carbon dioxide). Anoxic tank 103 is used for denitrification in an anoxic environment, utilizing organic matter in wastewater as an electron donor to convert nitrate nitrogen (NO3) into nitrogen. - or NO2 -The nitrogen is reduced to nitrogen gas (N2), thus achieving nitrogen removal. Aerobic tank 104 is used for aerobic biodegradation in an aerobic environment, including the oxidative decomposition of organic matter by heterotrophic bacteria and the oxidation of ammonia nitrogen.

[0060] The method described in this application is used in a wastewater treatment control system, which includes a control device 106, an ammonia nitrogen sensor 110, a nitrate sensor 111, a total nitrogen sensor 112, a carbon source dosing system 107, a blower 108, and an aeration device 109. The control device 106 is connected to the carbon source dosing system 107, the blower 108, the ammonia nitrogen sensor 110, the nitrate sensor 111, and the total nitrogen sensor 112. The ammonia nitrogen sensor 110, the nitrate sensor 111, and the total nitrogen sensor 112 are installed in the secondary sedimentation tank 105 or at the outlet of the aerobic tank 104. The blower 108 is used to supply air to the aeration device 109, which is installed in the aerobic tank 104. The carbon source dosing system 107 is used to deliver chemicals to the anoxic tank 103.

[0061] Specifically, the control device 106 generally uses a PLC controller;

[0062] Specifically, the total nitrogen sensor 112 is used to measure the total nitrogen concentration in wastewater. The nitrogen elements involved in total nitrogen control mainly include nitrate nitrogen (NO3). - -N), nitrite nitrogen (NO2) - -N), ammonia nitrogen (NH4) + -N / NH3-N) and other organic nitrogen, of which nitrate nitrogen (NO3) - -N), nitrite nitrogen (NO2) - -N) are all nitrate nitrogen.

[0063] Specifically, the ammonia nitrogen sensor 110 is used to measure the nitrogen concentration in the form of ammonia nitrogen; the nitrate sensor 111 is used to measure the nitrogen concentration in the form of nitrate nitrogen.

[0064] Specifically, the blower 108 is used to provide oxygen to the aeration device 109. The amount of oxygen provided is controlled by adjusting the air volume of the blower 108. It is used to provide oxygen to the aerobic tank 104 and can consume ammonia nitrogen in the aerobic tank 104, thereby reducing the concentration of ammonia nitrogen and total nitrogen.

[0065] Specifically, the carbon source dosing system 107 is used to provide carbon source agents to the anoxic pond 103. It utilizes a variety of organic carbon sources as electron donors for direct addition to promote efficient denitrification by denitrifying bacteria and reduce nitrates to nitrogen.

[0066] Figure 2 A schematic flowchart of the energy-saving and consumption-reducing wastewater treatment method provided in the embodiments of this application. Figure 1 ;like Figure 2As shown, the control device specifically used in the above system includes the following method:

[0067] S201. Determine whether the total nitrogen concentration is greater than the first threshold value. If the total nitrogen concentration is greater than the first preset threshold value, determine the nitrogen form based on the nitrate nitrogen concentration and ammonia nitrogen concentration. The total nitrogen concentration, nitrate nitrogen concentration and ammonia nitrogen concentration are obtained by the total nitrogen sensor, nitrate sensor and ammonia nitrogen sensor respectively at the outlet of the secondary sedimentation tank or the aerobic tank. The nitrogen form includes the first nitrogen form, the second nitrogen form and other forms. The first nitrogen form is the form mainly composed of nitrate nitrogen, the second nitrogen form is the form mainly composed of ammonia nitrogen, and other forms are forms other than the first nitrogen form and the second nitrogen form.

[0068] Specifically, total nitrogen is mainly composed of nitrate nitrogen and ammonia nitrogen. This step is used to determine the nitrogen form of total nitrogen when the total nitrogen concentration is greater than the first preset threshold value. The first nitrogen form is nitrogen element that mainly appears in the form of nitrate, and the second nitrogen form is nitrogen element that mainly appears in the form of ammonia nitrogen. Other forms are neither the first nitrogen form nor the second nitrogen form.

[0069] S202. If the nitrogen form is the first nitrogen form or the second nitrogen form, adjust the air volume of the blower or the dosage of the carbon source dosing system until the nitrogen form is other forms. The carbon source dosing system is used to provide carbon source agents to the anaerobic tank, and the blower is used to provide oxygen to the aeration device in the aerobic tank.

[0070] Specifically, increasing aeration is used to consume ammonia nitrogen, thereby reducing the ammonia nitrogen concentration; reducing aeration is used to reduce unnecessary aeration energy consumption.

[0071] Specifically, the carbon source dosing system provides carbon source agents to the anoxic pond. It utilizes various organic carbon sources as electron donors, adding them directly to promote efficient denitrification by denitrifying bacteria, reducing nitrates to nitrogen gas. The dosage is adjusted based on the nitrogen form; increasing the dosage further promotes denitrification, while decreasing it reduces excess agent consumption.

[0072] The method provided in this application determines the nitrogen form based on nitrate nitrogen concentration and ammonia nitrogen concentration when the total nitrogen concentration exceeds a first preset threshold; and adjusts the nitrogen form to other forms by regulating the fan or carbon source dosing system when the nitrogen form is a first nitrogen form or a second nitrogen form. This achieves the following technical effects:

[0073] The embodiments of this application can treat nitrogen in wastewater according to the form of nitrogen in the wastewater, while reducing chemical and energy consumption, thereby achieving the purpose of energy conservation and consumption reduction.

[0074] Figure 3A schematic flowchart of the energy-saving and consumption-reducing wastewater treatment method provided in the embodiments of this application. Figure 2 ;like Figure 3 As shown, the control device specifically used in the above system includes the following method:

[0075] S301. Determine whether the total nitrogen concentration meets the standard. If it does not meet the standard, proceed to S302; if it meets the standard, proceed to S303.

[0076] Specifically, whether the wastewater meets the standards is a procedure that wastewater treatment plants must control. This step only considers whether the total nitrogen concentration meets the discharge standards.

[0077] Specifically, by judging the preset compliance threshold, if the total nitrogen concentration is greater than the preset compliance threshold, it is determined that the total nitrogen concentration does not meet the standard; if the total nitrogen concentration is not greater than the preset compliance threshold, it is determined that the total nitrogen concentration meets the standard.

[0078] As some embodiments, the preset threshold value is generally set at 12 mg / L to 15 mg / L;

[0079] Specifically, if the total nitrogen concentration is greater than the preset threshold, the total nitrogen concentration is determined to be non-compliant; if the total nitrogen concentration is not greater than the preset threshold, the total nitrogen concentration is determined to be compliant.

[0080] S302. Adjust the blower or carbon source dosing system until the total nitrogen concentration meets the standard, then execute S303.

[0081] Specifically, this is usually achieved by consuming one or more of the following methods: nitrate and ammonia nitrogen. The total nitrogen sensor is used to determine whether the total nitrogen concentration meets the standard, while the nitrate sensor or ammonia nitrogen sensor is used to determine whether nitrate or ammonia nitrogen has been consumed.

[0082] As one embodiment, S302 specifically includes:

[0083] S3021. Determine whether the ammonia nitrogen concentration is greater than the third preset threshold. If it is greater, execute S3022; if it is not greater, execute S3023.

[0084] S3022. Increase the air volume of the fan until the ammonia nitrogen concentration does not exceed the third preset threshold value;

[0085] S3023. Determine whether the total nitrogen concentration is greater than the preset threshold. If it is, proceed to S2024; otherwise, confirm that the total nitrogen concentration meets the standard.

[0086] S3024. Increase the dosage of the carbon source dosing system until the total nitrogen concentration does not exceed the preset threshold value.

[0087] S303. Determine whether the total nitrogen concentration is greater than the first preset threshold. If not, proceed to S307; if not, proceed to S304.

[0088] Specifically, the first preset threshold is a threshold that needs to be warned. When the total nitrogen concentration is greater than the first preset threshold, it is necessary to further determine the nitrogen form through S304, and determine whether the dosage or the fan air volume needs to be adjusted based on the nitrogen form.

[0089] Specifically, if the total nitrogen concentration is not greater than the first preset threshold, then the nitrogen form is determined to be another form.

[0090] Specifically, the first preset threshold value is less than the preset compliance threshold value;

[0091] As one embodiment, the range of the first preset threshold value is set at 10 mg / L to 12 mg / L.

[0092] S304. Determine the nitrogen form based on the nitrate nitrogen concentration and ammonia nitrogen concentration. If the nitrogen form is the first nitrogen form, proceed to S305; if the nitrogen form is the second nitrogen form, proceed to S306; if the nitrogen form is any other form, proceed to S307.

[0093] Specifically, nitrogen forms include a first nitrogen form, a second nitrogen form, and other forms; if the first percentage of nitrate nitrogen concentration to total nitrogen concentration is greater than a first preset percentage, the nitrogen form is determined to be the first nitrogen form.

[0094] Specifically, the first preset percentage is set between 50% and 80%;

[0095] Specifically, if the second percentage of ammonia nitrogen concentration to total nitrogen concentration is greater than the second preset percentage, the nitrogen form is determined to be the second nitrogen form.

[0096] Specifically, the second preset percentage is set between 50% and 80%;

[0097] Specifically, if the conditions for determining it as the first nitrogen form and the second nitrogen form are not met simultaneously, the nitrogen form is determined to be another form.

[0098] Furthermore, if the total nitrogen concentration is greater than the first preset threshold, and the first percentage is not greater than the first preset percentage, and the second percentage is not greater than the second preset percentage, then the nitrogen form is determined to be another form.

[0099] Furthermore, according to S303, when the total nitrogen concentration is not greater than the first preset threshold, the nitrogen form is also determined to be another form.

[0100] S305. Increase the dosage of the carbon source dosing system and reduce the air volume of the blower until the nitrogen form is in another form.

[0101] As one embodiment, a method of gradually increasing the dosage and gradually decreasing the fan air volume is adopted. Each time the dosage is increased and the fan air volume is decreased, the nitrate nitrogen concentration, total nitrogen concentration, and ammonia nitrogen concentration are re-acquired after a preset time. Then, return to S303, re-determine the nitrogen form, and continue to cycle this method until the nitrogen form is in another form, and then execute S307.

[0102] As another embodiment, a method of gradually increasing the dosage and gradually decreasing the fan air volume is adopted. Each time the dosage is increased and the fan air volume is decreased, the nitrate nitrogen concentration and total nitrogen concentration are re-acquired after a preset time.

[0103] Determine whether the first or second condition is met based on the nitrate nitrogen concentration and total nitrogen concentration. If met, determine that the nitrogen form is another form and execute S307. If not met, continue to increase the dosage and decrease the fan airflow once, repeating the steps of obtaining the nitrate nitrogen concentration and total nitrogen concentration again after a preset time until the first or second condition is met, then execute S307.

[0104] Furthermore, the first condition includes: the total nitrogen concentration is not greater than the first preset threshold value; the second condition includes: the total nitrogen concentration is greater than the first preset threshold value, and the first percentage is not greater than the first preset percentage.

[0105] S306. Increase the air volume of the fan and reduce the dosage of the carbon source supply system until the nitrogen form is in another form.

[0106] As one embodiment, a method of gradually increasing the air volume and gradually decreasing the dosage is adopted. The primary fan air volume is increased and the primary dosage is decreased. After a preset time, the nitrate nitrogen concentration, total nitrogen concentration, and ammonia nitrogen concentration are re-acquired. The process returns to S303, the nitrogen form is re-determined, and the method continues to cycle until the nitrogen form is in another form, and then S307 is executed.

[0107] In another embodiment, each time the fan airflow is increased and the dosage is decreased, the ammonia nitrogen concentration and total nitrogen concentration are re-acquired after a preset time. The ammonia nitrogen concentration and total nitrogen concentration are used to determine whether the first or third condition is met. If met, the nitrogen form is determined to be another form, and step S307 is executed. If not met, the fan airflow is increased and the dosage is decreased again, and the steps of re-acquiring the ammonia nitrogen concentration and total nitrogen concentration after a preset time are repeated until the first or third condition is met, at which point step S307 is executed.

[0108] Specifically, the first condition includes: the total nitrogen concentration is not greater than the first preset threshold value; the third condition includes: the total nitrogen concentration is greater than the first preset threshold value, and the second percentage is not greater than the second preset percentage.

[0109] S307. When the nitrogen form is determined to be other forms, if the ammonia nitrogen concentration is less than the second preset threshold, reduce the air volume of the fan until the ammonia nitrogen concentration is not less than the second preset threshold.

[0110] Specifically, if the nitrogen form is determined to be other forms and the ammonia nitrogen in the effluent is close to 0, it indicates that the aerobic tank of the wastewater treatment plant is over-aerated. The dissolved oxygen in the aerobic tank can be reduced by decreasing the aeration rate, so that part of the nitrogen in the total nitrogen of the effluent is converted from nitrate nitrogen to ammonia nitrogen. This ensures that the total nitrogen in the effluent does not increase while saving the aeration energy consumption of the wastewater treatment plant.

[0111] Specifically, the second preset threshold value is set close to 0.

[0112] The wastewater treatment method provided in this application embodiment can achieve the following technical effects:

[0113] This application, based on nitrogen form and concentration, rapidly diagnoses key problems in wastewater treatment plants. It dynamically adjusts the system based on real-time online nitrogen detection results, ensuring that the total nitrogen in the effluent does not increase while achieving precise, rapid, energy-saving, and consumption-reducing goals for the wastewater treatment system. This application is simple and convenient to operate, with significant energy-saving and consumption-reducing effects, and is suitable for widespread adoption.

[0114] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0115] It should be further noted that although the steps in the flowchart are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowchart may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0116] In this embodiment of the invention, electronic devices or main control devices can be divided into functional modules according to the above method examples. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing unit. The integrated unit can be implemented in hardware or as a software functional module. It should be noted that the module division in this embodiment of the invention is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0117] Figure 4 This application provides a schematic diagram of the structure of an energy-saving and consumption-reducing wastewater treatment device; as shown in the embodiments. Figure 4 As shown, device 4 includes:

[0118] The judgment module 401 is used to determine whether the total nitrogen concentration is greater than the first threshold value. If the total nitrogen concentration is greater than the first preset threshold value, the nitrogen form is determined according to the nitrate nitrogen concentration and the ammonia nitrogen concentration. The total nitrogen concentration, nitrate nitrogen concentration and ammonia nitrogen concentration are obtained by the total nitrogen sensor, nitrate sensor and ammonia nitrogen sensor respectively in the secondary sedimentation tank or at the outlet of the aerobic tank. The nitrogen form includes the first nitrogen form, the second nitrogen form and other forms. The first nitrogen form is the form mainly composed of nitrate nitrogen, the second nitrogen form is the form mainly composed of ammonia nitrogen, and the other forms are forms other than the first nitrogen form and the second nitrogen form.

[0119] The adjustment module 402 is used to adjust the dosage of the blower or carbon source dosing system until the nitrogen form is other forms, if the nitrogen form is the first nitrogen form or the second nitrogen form. The carbon source dosing system is used to provide carbon source agents to the anaerobic tank, and the blower is used to provide oxygen to the aeration device in the aerobic tank.

[0120] Specifically, the judgment module 401 is also used for:

[0121] If the first percentage of nitrate nitrogen concentration to total nitrogen concentration is greater than the first preset percentage, the nitrogen form is determined to be the first nitrogen form.

[0122] If the second percentage of ammonia nitrogen concentration to total nitrogen concentration is greater than the second preset percentage, the nitrogen form is determined to be the second nitrogen form.

[0123] If the conditions for determining it as the first nitrogen form and the second nitrogen form are not met simultaneously, the nitrogen form is determined to be another form.

[0124] Specifically, adjustment module 402 is also used for:

[0125] If the nitrogen form is the first nitrogen form, increase the dosage and decrease the fan airflow until the nitrogen form changes to another form.

[0126] Specifically, adjustment module 402 is also used for:

[0127] If the nitrogen form is the second nitrogen form, increase the air volume of the fan and reduce the dosage until the nitrogen form is another form.

[0128] Specifically, the judgment module 401 is also used for:

[0129] If the total nitrogen concentration is not greater than the first preset threshold, the nitrogen form is determined to be another form.

[0130] Specifically, adjustment module 402 is also used for:

[0131] If the nitrogen form is another form, the method also includes:

[0132] If the ammonia nitrogen concentration is less than the second preset threshold, reduce the fan's airflow until the ammonia nitrogen concentration is not less than the second preset threshold.

[0133] Specifically, the judgment module 401 is also used for:

[0134] Before determining whether the total nitrogen concentration in the secondary sedimentation tank or at the outlet of the aerobic tank is greater than the first threshold, determine whether the total nitrogen concentration meets the standard. If it does not meet the standard, adjust the blower or carbon source dosing system until the total nitrogen concentration meets the standard.

[0135] Determining whether the total nitrogen concentration meets the standard includes:

[0136] If the total nitrogen concentration is greater than the preset threshold, the total nitrogen concentration is determined to be non-compliant; if the total nitrogen concentration is not greater than the preset threshold, the total nitrogen concentration is determined to be compliant.

[0137] Adjusting the blower or carbon source dosing system to achieve the required total nitrogen concentration includes:

[0138] If the ammonia nitrogen concentration is greater than the third preset threshold, the air volume of the fan is increased until the ammonia nitrogen concentration is no greater than the third preset threshold.

[0139] Determine whether the total nitrogen concentration is greater than the preset threshold. If it is, increase the dosage of the carbon source dosing system until the total nitrogen concentration is no greater than the preset threshold.

[0140] This embodiment provides an energy-saving and consumption-reducing sewage treatment device that can perform the above-mentioned energy-saving and consumption-reducing sewage treatment method. Its implementation principle and technical effect are similar, and will not be described again here.

[0141] In the specific implementation of the aforementioned energy-saving and consumption-reducing wastewater treatment equipment, each module can be implemented as a processor. The processor can execute computer execution instructions stored in the memory, so that the processor executes the aforementioned energy-saving and consumption-reducing wastewater treatment method.

[0142] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 5 As shown, the electronic device 50 includes at least one processor 501 and a memory 502. The electronic device 50 also includes a communication component 503. The processor 501, memory 502, and communication component 503 are connected via a bus 504.

[0143] In the specific implementation process, at least one processor 501 executes computer execution instructions stored in memory 502, causing at least one processor 501 to execute an energy-saving and consumption-reducing wastewater treatment method as executed on the electronic device side as described above.

[0144] The specific implementation process of processor 501 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0145] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0146] The memory may include high-speed RAM, and may also include non-volatile storage (NVM), such as at least one disk storage.

[0147] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0148] The above description of the functions implemented by electronic devices and main control devices has introduced the solutions provided by the embodiments of the present invention. It is understood that, in order to implement the above functions, the electronic device or main control device includes hardware structures and / or software modules corresponding to the execution of each function. By combining the units and algorithm steps of the various examples described in the embodiments of the present invention, the embodiments of the present invention can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present invention.

[0149] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the energy-saving and consumption-reducing wastewater treatment method described above.

[0150] The aforementioned computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0151] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in an electronic device or a host device.

[0152] This application also provides a computer program product, comprising: a computer program stored in a readable storage medium, wherein at least one processor of an electronic device can read the computer program from the readable storage medium, and the at least one processor executes the computer program to cause the electronic device to perform the scheme provided in any of the above embodiments.

[0153] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wastewater treatment method that saves energy and reduces consumption, characterized in that, The method includes: The system determines whether the total nitrogen concentration is greater than a first preset threshold. If the total nitrogen concentration is greater than the first preset threshold, the nitrogen form is determined based on the nitrate nitrogen concentration and the ammonia nitrogen concentration. The total nitrogen concentration, nitrate nitrogen concentration, and ammonia nitrogen concentration are obtained by a total nitrogen sensor, a nitrate sensor, and an ammonia nitrogen sensor, respectively, at the outlet of the secondary sedimentation tank or the aerobic tank. The nitrogen form includes a first nitrogen form, a second nitrogen form, and other forms. The first nitrogen form is a form dominated by nitrate nitrogen, the second nitrogen form is a form dominated by ammonia nitrogen, and the other forms are forms other than the first nitrogen form and the second nitrogen form. If the nitrogen form is the first nitrogen form or the second nitrogen form, the air volume of the blower or the dosage of the carbon source dosing system is adjusted until the nitrogen form is the other form. The carbon source dosing system is used to provide carbon source agents to the anoxic tank, and the blower is used to provide oxygen to the aeration device in the aerobic tank. The determination of nitrogen form based on the nitrate nitrogen concentration and ammonia nitrogen concentration includes: If the first percentage of the nitrate nitrogen concentration to the total nitrogen concentration is greater than the first preset percentage, the nitrogen form is determined to be the first nitrogen form. If the second percentage of the ammonia nitrogen concentration to the total nitrogen concentration is greater than the second preset percentage, the nitrogen form is determined to be the second nitrogen form. If the conditions for determining it as both the first nitrogen form and the second nitrogen form are not met simultaneously, the nitrogen form is determined to be one of the other forms. If the nitrogen form is the first nitrogen form, adjusting the dosage of the blower or the carbon source dosing system until the nitrogen form is one of the other forms includes: By increasing the dosage and decreasing the fan airflow until the nitrogen form is one of the other forms; If the nitrogen form is the second nitrogen form, adjusting the airflow of the fan or the dosage of the carbon source dosing system until the nitrogen form is one of the other forms includes: By increasing the air volume of the fan and decreasing the dosage until the nitrogen form is one of the other forms; Before determining whether the total nitrogen concentration in the secondary sedimentation tank or at the outlet of the aerobic tank is greater than a first preset threshold, the method further includes: Determine whether the total nitrogen concentration meets the standard. If it does not meet the standard, adjust the fan or the carbon source dosing system until the total nitrogen concentration meets the standard. Determining whether the total nitrogen concentration meets the standard includes: If the total nitrogen concentration is greater than the preset compliance threshold, the total nitrogen concentration is determined to be non-compliant; if the total nitrogen concentration is not greater than the preset compliance threshold, the total nitrogen concentration is determined to be compliant. The step of adjusting the blower or the carbon source dosing system to achieve the required total nitrogen concentration includes: If the ammonia nitrogen concentration is greater than the third preset threshold, the air volume of the fan is increased until the ammonia nitrogen concentration is no greater than the third preset threshold. Determine whether the total nitrogen concentration is greater than a preset threshold. If it is greater than the preset threshold, increase the dosage of the carbon source dosing system until the total nitrogen concentration is no greater than the preset threshold.

2. The method according to claim 1, characterized in that, The method further includes: If the total nitrogen concentration is not greater than the first preset threshold, the nitrogen form is determined to be another form.

3. The method according to claim 1, characterized in that, If the nitrogen form is another form, the method further includes: If the ammonia nitrogen concentration is less than the second preset threshold, reduce the air volume of the fan until the ammonia nitrogen concentration is not less than the second preset threshold.

4. An energy-saving and consumption-reducing wastewater treatment device, characterized in that, include: The judgment module is used to determine whether the total nitrogen concentration is greater than a first preset threshold. If the total nitrogen concentration is greater than the first preset threshold, the nitrogen form is determined based on the nitrate nitrogen concentration and the ammonia nitrogen concentration. The total nitrogen concentration, nitrate nitrogen concentration, and ammonia nitrogen concentration are obtained by the total nitrogen sensor, nitrate sensor, and ammonia nitrogen sensor respectively at the outlet of the secondary sedimentation tank or the aerobic tank. The nitrogen form includes a first nitrogen form, a second nitrogen form, and other forms. The first nitrogen form is a form mainly composed of nitrate nitrogen, the second nitrogen form is a form mainly composed of ammonia nitrogen, and the other forms are forms other than the first nitrogen form and the second nitrogen form. An adjustment module is used to adjust the air volume of the blower or the dosage of the carbon source dosing system until the nitrogen form is the other form if the nitrogen form is the first nitrogen form or the second nitrogen form. The carbon source dosing system is used to provide carbon source agents to the anoxic tank, and the blower is used to provide oxygen to the aeration device in the aerobic tank. The judgment module is also specifically used for: If the first percentage of the nitrate nitrogen concentration to the total nitrogen concentration is greater than the first preset percentage, the nitrogen form is determined to be the first nitrogen form. If the second percentage of the ammonia nitrogen concentration to the total nitrogen concentration is greater than the second preset percentage, the nitrogen form is determined to be the second nitrogen form. If the conditions for determining it as both the first nitrogen form and the second nitrogen form are not met simultaneously, the nitrogen form is determined to be one of the other forms. The adjustment module is further used for: If the nitrogen form is the first nitrogen form, the dosage is increased and the air volume of the blower is reduced until the nitrogen form is another form. The adjustment module is further used for: If the nitrogen form is the second nitrogen form, the air volume of the fan is increased and the dosage is decreased until the nitrogen form is the other form. The judgment module is also specifically used for: Before determining whether the total nitrogen concentration in the secondary sedimentation tank or at the outlet of the aerobic tank is greater than the first preset threshold, determine whether the total nitrogen concentration meets the standard. If it does not meet the standard, adjust the blower or the carbon source dosing system until the total nitrogen concentration meets the standard. Determining whether the total nitrogen concentration meets the standard includes: If the total nitrogen concentration is greater than the preset compliance threshold, the total nitrogen concentration is determined to be non-compliant; if the total nitrogen concentration is not greater than the preset compliance threshold, the total nitrogen concentration is determined to be compliant. The step of adjusting the blower or the carbon source dosing system to achieve the required total nitrogen concentration includes: If the ammonia nitrogen concentration is greater than the third preset threshold, the air volume of the fan is increased until the ammonia nitrogen concentration is no greater than the third preset threshold. Determine whether the total nitrogen concentration is greater than a preset threshold. If it is greater than the preset threshold, increase the dosage of the carbon source dosing system until the total nitrogen concentration is no greater than the preset threshold.

5. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1 to 3.

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