Sewage low-carbon treatment system based on electrochemistry and biochar

Abstract

The invention relates to the technical field of sewage discharge treatment, and discloses a sewage low-carbon treatment system based on electrochemistry and biochar, which comprises a deep treatment filter tank, an electrochemical nitrogen and phosphorus removal device, a biochar adsorption and filtration module, an intelligent control and operation and maintenance system, a slow-release agent regulation and control module and a low-carbon and resource recycling system, the advanced treatment filter tank is used for filtering sewage impurities and particles, adsorbing and removing organic matters, reducing the content of nitrogen and phosphorus nutrient substances and adapting to the change of water quality and water quantity; the electrochemical nitrogen and phosphorus removal device is used for carrying out electrochemical reaction to remove nitrate, phosphate and fluorine ions. According to the invention, the electrochemical active reaction is combined with charcoal adsorption filtration, so that the technology greatly improves the sewage treatment efficiency, especially shows a higher removal rate when treating complex pollutants, can meet higher water quality standard requirements, and effectively overcomes the difficulty that the traditional treatment technology is difficult to remove multi-element pollutants.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage discharge treatment, and in particular to a sewage low-carbonization treatment system based on electrochemistry and biochar. Background Art

[0005] Driven by policies and with the growth of market demand, the innovation of municipal wastewater zero discharge technology has become an issue that needs to be addressed urgently. Summary of the invention

[0006] The present invention provides a sewage low-carbonization treatment system based on electrochemistry and biochar, aiming to improve the problems of high energy consumption, high investment and incomplete pollutant removal faced by existing municipal sewage treatment technologies.

[0007] In the first aspect, the present invention provides the following technical solutions: a sewage low-carbonization treatment system based on electrochemistry and biochar, comprising: a deep treatment filter, an electrochemical denitrification and phosphorus removal device, a biochar adsorption and filtration module, an intelligent control and operation and maintenance system, a slow-release agent control module, and a low-carbonization and resource recycling system; The deep treatment filter is used to filter sewage impurities and particles, adsorb and remove organic matter, reduce the content of nitrogen and phosphorus nutrients, and adapt to changes in water quality and quantity; The electrochemical denitrification and dephosphorization device is used to perform electrochemical reactions to remove nitrates, phosphates and fluoride ions; The biochar adsorption and filtration module is used to adsorb organic pollutants and remove trace heavy metals; The intelligent control and operation and maintenance system is used to monitor sewage treatment parameters and adjust treatment process operation parameters, as well as predict equipment failures; The slow-release agent control module is used to control the release rate and dosage of the slow-release agent, maintain the stability of the electrochemical reaction, reduce excessive use of the agent, and adapt to the treatment requirements of different water quality conditions; The low-carbonization and resource recycling system is used to recover energy in the sewage treatment process, reduce carbon emissions, and extract and recover useful resources in the sewage.

[0008] The deep treatment filter includes a filter unit, a supporting layer unit and a water collection system unit. The filter unit is used for preliminary filtration, the supporting layer unit is used to support filter material, and the water collection system unit is used to collect clean water after filtration treatment. The filter unit includes a first-order deep treatment filter, a second-order deep treatment filter and an N-order deep treatment filter.

[0009] The electrochemical denitrification and dephosphorization device includes a reaction cell, an electrolyte circulation unit, a power supply unit, a monitoring and control unit, a gas exhaust unit and a filtration and separation unit. The reaction cell is used to provide a space for electrochemical reactions. The electrolyte circulation unit is used to allow the electrolyte to flow continuously and be evenly distributed in the reaction cell. The power supply unit is used to provide stable voltage and current to the electrochemical reaction. The monitoring and control unit is used to obtain various parameters during the electrochemical reaction in real time. The gas exhaust unit is used to promptly exhaust the gas generated by the electrochemical reaction. The filtration and separation unit is used to filter and separate the precipitate or impurities after the reaction.

[0010] The biochar adsorption and filtration module includes a biochar filling unit, an inlet distribution unit, an outlet collection unit, a backwash unit and a pressure monitoring unit. The biochar filling unit is used to fill biochar materials, the inlet distribution unit is used to evenly distribute sewage entering the module, the outlet collection unit is used to collect the outlet water after biochar adsorption and filtration treatment, the backwash unit is used to backwash the biochar to remove adsorbed impurities, and the pressure monitoring unit is used to monitor the pressure conditions inside the module.

[0011] The intelligent control and operation and maintenance system includes an intelligent guide rail and manipulator unit, a monitoring and display unit, a remote control unit and a data analysis and prediction unit. The intelligent guide rail and manipulator unit is used to provide the manipulator with an accurate moving path and operation support. The monitoring and display unit is used to display the operating status, water quality data and equipment status information of the sewage treatment plant in real time. The remote control unit is used to realize the remote operation and management of the sewage treatment system by the staff. The data analysis and prediction unit is used to analyze and process the collected data.

[0012] The sustained-release drug regulation module includes a drug storage and drug release control unit, a sustained-release carrier unit and a feedback regulation unit. The drug storage and drug release control unit is used to store the sustained-release drug and accurately control its release speed and dosage. The sustained-release carrier unit is used to carry and control the slow release process of the drug. The feedback regulation unit is used to adjust and optimize the drug release in real time according to monitoring data.

[0013] The low-carbonization and resource recycling system includes an energy recovery unit, a solar energy utilization unit, a waste heat recovery unit, a resource recovery unit, a sewage treatment and reuse unit and a carbon emission monitoring unit. The energy recovery unit is used to collect and utilize the energy generated in the sewage treatment process, the solar energy utilization unit is used to convert solar energy into electrical energy or thermal energy, the waste heat recovery unit is used to recover waste heat in the sewage treatment process, the resource recovery unit is used to extract useful substances in the sewage, the sewage treatment and reuse unit is used to further purify the treated sewage, and the carbon emission monitoring unit is used to monitor the carbon emissions during the operation of the system.

[0014] In a second aspect, the invention provides the following technical solution: a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned electrochemical and biochar-based low-carbon and zero-emission sewage treatment system when executing the computer program.

[0015] In a third aspect, the present invention provides the following technical solution: a readable storage medium having a computer program stored thereon, and the computer program, when executed by a processor, implements the above-mentioned electrochemical and biochar-based low-carbon and zero-emission sewage treatment system.

[0016] Furthermore, the operation method of the electrochemical and biochar-based sewage low-carbonization treatment system comprises the following steps: Step 1: Collect the wastewater to be treated into the regulating tank for preliminary sedimentation and screen filtration to remove larger solid impurities and floating objects, and adjust the flow and water quality of the wastewater to make it uniform and stable, so as to prepare for subsequent treatment; Step 2: The pretreated sewage first enters the first-stage deep treatment filter tank, where the coarse filter material removes larger particle impurities. Then, the sewage flows through the second-stage deep treatment filter tank and subsequent filter tanks in turn. The filter material and biofilm in each filter tank work together to finely filter the sewage and adsorb and remove organic matter, nitrogen, and phosphorus pollutants. In this process, the operating parameters of the filter tank, such as filtration speed and backwashing cycle, are adjusted according to the real-time changes in the influent water quality and water volume to ensure the efficient operation of the filter tank. Step 3: The sewage flowing out of the deep treatment filter tank enters the reaction tank of the electrochemical denitrification and phosphorus removal device. The power supply unit provides stable voltage and current to drive the electrochemical reaction and remove nitrate, phosphate and fluoride ions. The electrolyte circulation unit ensures that the electrolyte is continuously and evenly distributed and optimizes the reaction conditions. The monitoring and control unit closely monitors the reaction parameters and adjusts the power output and reaction environment in time according to the feedback information. The gas generated by the reaction is discharged in time by the gas discharge unit. The solution after the reaction is filtered and separated by a separation unit to remove precipitation and impurities. Step 4: The sewage that has completed the electrochemical treatment enters the biochar adsorption and filtration module. Under the action of the water inlet distribution unit, the sewage is evenly contacted with the biochar filling unit. The biochar efficiently adsorbs organic pollutants and trace heavy metals. The treated effluent is collected by the effluent collection unit. The backwash unit regularly washes the biochar to remove the adsorbed impurities and restore its adsorption performance. The pressure monitoring unit monitors the internal pressure of the module throughout the process. Step 5: According to the real-time water quality and treatment requirements of the sewage, the agent storage and agent release control unit in the slow-release agent regulation module accurately controls the release speed and dosage of the slow-release agent. The slow-release carrier unit ensures the slow and stable release of the agent to enhance the treatment effect. The feedback regulation unit adjusts the agent release strategy in real time according to the monitoring data to adapt to changes in the treatment process. Step 6: The intelligent control and operation and maintenance system plays a key role in the entire treatment process. The intelligent guide rail and manipulator unit automatically inspects and maintains the equipment according to the preset program. The monitoring and display unit displays the overall operation status, water quality data and equipment status of the sewage treatment plant in real time. The remote control unit enables the staff to remotely control and manage the system. The data analysis and prediction unit deeply analyzes the collected data, predicts potential problems in advance, and formulates optimization strategies; Step 7: The energy recovery unit collects and utilizes the biogas energy generated during the sewage treatment process. The solar energy utilization unit converts solar energy into electrical energy or thermal energy to supplement the system energy consumption. The waste heat recovery unit recovers waste heat for heating the water inlet. The resource recovery unit extracts useful nitrogen and phosphorus substances from the sewage to achieve resource reuse. The sewage treatment and reuse unit further purifies the sewage that has been treated to meet the standards and meets the reuse standards for use in industry and greening fields. The carbon emission monitoring unit continuously monitors carbon emissions to provide a basis for emission reduction. Step eight, conduct strict water quality testing on the treated effluent. After all indicators meet the discharge standards, it will be safely discharged or reused. If it does not meet the standards, it will be returned to the corresponding treatment link for further treatment until it meets the standards.

[0017] The present invention has the following beneficial effects: 1. In the present invention, the electrochemical active reaction is combined with biochar adsorption filtration to remove nitrate, phosphate and fluoride ions through electrochemical reaction, and at the same time, the efficient adsorption performance of biochar is used to remove organic pollutants and heavy metals. This technology greatly improves the efficiency of sewage treatment, especially when treating complex pollutants, it shows a higher removal rate, can meet higher water quality standards, and effectively overcomes the problem that traditional treatment technologies are difficult to remove multiple pollutants.

[0018] 2. In the present invention, the balanced regulation of the electrochemical reaction potential energy is achieved through the parameter regulation of the sustained-release agent, the electrochemical reaction process of denitrification and phosphorus removal is further optimized, the reaction efficiency is improved, and the stable operation of the system under different water quality conditions is ensured. This design reduces the use of external agents, improves resource utilization, reduces operating costs, and at the same time improves the system's adaptability to water quality fluctuations, ensuring the stability of the effluent water quality.

[0019] 3. In the present invention, the filter tank adopts a new multi-layer stacking structure, and is designed with full water level and half water level operation modes. It can be dynamically adjusted according to the fluctuations of water volume and water quality, optimize the residence time, and realize flexible regulation of deep treatment. This innovation improves the operating efficiency of the sewage treatment plant under high load and fluctuating water quality conditions, ensures that the effluent water quality is stable and meets the standards, and enhances the adaptability and flexibility of sewage treatment.

[0020] 4. In the present invention, by introducing intelligent rails and manipulator systems, the filter tank operation and maintenance is automated and efficient, and the water quality and equipment status are monitored and adjusted in real time in combination with the online monitoring system, which further improves the automation level of the system. The intelligent control platform reduces the need for manual maintenance, reduces the risk of operational failures, improves the management efficiency and safety of the sewage treatment plant, and significantly reduces operating costs. 5. In the present invention, low-carbon treatment technology, such as anaerobic fermentation to convert organic matter in sludge into biomass gas, combined with intelligent energy recovery and recycling systems, is used to achieve low-carbon operation of sewage treatment, while recycling resources such as nitrogen and phosphorus generated during the treatment process. Greenhouse gas emissions in the sewage treatment process are greatly reduced, in line with the "carbon neutrality" goal, and further through the recycling of recycled water and resources, help achieve the "zero emission" goal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a system architecture diagram of the electrochemical and biochar-based low-carbon sewage treatment system proposed in the present invention; Figure 2 This is a schematic diagram of a deep treatment filter tank of a sewage low-carbonization treatment system based on electrochemistry and biochar proposed in the present invention; Figure 3 This is a schematic diagram of the filter unit of the sewage low-carbonization treatment system based on electrochemistry and biochar proposed in the present invention; Figure 4 Schematic diagram of the electrochemical denitrification and phosphorus removal device of the sewage low-carbonization treatment system based on electrochemistry and biochar proposed in the present invention; Figure 5 This is a schematic diagram of the biochar adsorption filtration module of the electrochemical and biochar-based sewage low-carbonization treatment system proposed in the present invention; Figure 6This is a usage diagram of the intelligent control and operation and maintenance system of the electrochemical and biochar-based sewage low-carbonization treatment system proposed by the present invention; Figure 7 This is a schematic diagram of a slow-release agent control module of a sewage low-carbonization treatment system based on electrochemistry and biochar proposed in the present invention; Figure 8 A schematic diagram of a low-carbonization and resource recycling system of a sewage low-carbonization treatment system based on electrochemistry and biochar proposed in the present invention; Fig. 9 This is a flow chart of the operating method steps of the electrochemical and biochar-based sewage low-carbonization treatment system proposed in the present invention. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1 Reference Figure 1-Figure 8 In the first embodiment of the present invention, the present invention provides a sewage low-carbonization treatment system based on electrochemistry and biochar, including: a deep treatment filter, an electrochemical denitrification and phosphorus removal device, a biochar adsorption filtration module, an intelligent control and operation and maintenance system, a slow-release agent control module and a low-carbonization and resource recycling system; The deep treatment filter is used to filter sewage impurities and particles, adsorb and remove organic matter, reduce the content of nitrogen and phosphorus nutrients, and adapt to changes in water quality and quantity; The electrochemical denitrification and phosphorus removal device is used to remove nitrate, phosphate and fluoride ions by electrochemical reaction; The biochar adsorption and filtration module is used to adsorb organic pollutants and remove trace heavy metals; Intelligent control and operation and maintenance systems are used to monitor sewage treatment parameters and adjust treatment process operating parameters, as well as predict equipment failures; The slow-release agent control module is used to control the release rate and dosage of the slow-release agent, maintain the stability of the electrochemical reaction, reduce excessive use of agents, and adapt to the treatment requirements of different water quality conditions; The low-carbonization and resource recycling system is used to recover energy in the sewage treatment process, reduce carbon emissions, and extract and recycle useful resources in sewage.

[0024] The deep treatment filter includes a filter unit, a supporting layer unit and a water collection system unit. The filter unit is used for preliminary filtration, the supporting layer unit is used to support filter materials, and the water collection system unit is used to collect clean water after filtration treatment. The filter unit includes a first-order deep treatment filter, a second-order deep treatment filter and an N-order deep treatment filter.

[0025] The filter unit is the core filtration part. The first-stage deep treatment filter, second-stage deep treatment filter and N-stage deep treatment filter inside it form a hierarchical multi-stage filtration system. Each stage of the filter removes pollutants of different sizes and characteristics in a targeted manner, gradually improving the purity of the water quality. The supporting layer unit provides a solid and reliable support structure for the filter material, ensuring that the filter material maintains a stable structure and excellent performance during the long-term filtration process, without deformation or displacement, to ensure the consistency and reliability of the filtration effect. The water collection system unit demonstrates efficient and accurate clean water collection capabilities, and methodically collects the clean water that has been filtered and treated layer by layer, preparing for subsequent utilization or further treatment, thereby achieving the initial purification and orderly integration of water resources.

[0026] The electrochemical denitrification and phosphorus removal device includes a reaction cell, an electrolyte circulation unit, a power supply unit, a monitoring and control unit, a gas emission unit and a filtration and separation unit. The reaction cell is used to provide a space for the electrochemical reaction. The electrolyte circulation unit is used to make the electrolyte flow continuously and be evenly distributed in the reaction cell. The power supply unit is used to provide a stable voltage and current to the electrochemical reaction. The monitoring and control unit is used to obtain various parameters in the electrochemical reaction process in real time. The gas emission unit is used to discharge the gas generated by the electrochemical reaction in time. The filtration and separation unit is used to filter and separate the precipitate or impurities after the reaction.

[0027] The reaction pool creates a sufficient and suitable space environment for the electrochemical reaction, ensuring that the reaction can be fully and effectively carried out without any dead ends. The electrolyte circulation unit plays a key role. It ensures that the electrolyte flows continuously and evenly in the reaction pool, maintains a stable and ideal ion concentration, and provides good conductivity, thereby creating the best conditions for the electrochemical reaction and significantly improving the reaction efficiency and effect. The power supply unit provides a stable, accurate and suitable voltage and current for the electrochemical reaction to ensure efficient and thorough removal. The monitoring and control unit is always vigilant and obtains the key parameters of the electrochemical reaction in real time. Then, based on these precise data, the reaction conditions are intelligently adjusted to ensure that the reaction always remains in an efficient, stable and ideal state without any external interference. The gas emission unit quickly and timely discharges various gases generated during the electrochemical reaction to avoid any adverse effects of gas accumulation on the reaction process and maintain the smooth progress of the reaction. The filtration and separation unit exhibits excellent separation ability, effectively filters and separates the precipitation or impurities after the reaction, ensures that the effluent water quality reaches an extremely high purity standard, and provides reliable guarantee for subsequent use or discharge.

[0028] The biochar adsorption and filtration module includes a biochar filling unit, an inlet distribution unit, an outlet collection unit, a backwash unit and a pressure monitoring unit. The biochar filling unit is used to fill the biochar material, the inlet distribution unit is used to evenly distribute the sewage entering the module, the outlet collection unit is used to collect the outlet water after the biochar adsorption and filtration treatment, the backwash unit is used to reversely wash the biochar to remove the adsorbed impurities, and the pressure monitoring unit is used to monitor the pressure inside the module.

[0029] The biochar filling unit is filled with biochar materials with high adsorption performance. These materials provide rich and efficient adsorption media for the adsorption process, ensuring strong adsorption of pollutants. The water inlet distribution unit distributes the sewage entering the module in a uniform and fine manner, so that the sewage can fully contact with the biochar in all directions and without dead ends, thereby ensuring the high consistency and excellent efficiency of the adsorption effect, and not letting go of any pollutant molecules. The effluent collection unit collects the effluent after biochar adsorption and filtration treatment in an accurate and correct manner, realizing the orderly and efficient collection of the treated water body, making full preparations for subsequent treatment or use. The backwashing unit regularly and regularly backwashes the biochar, effectively removing the impurities accumulated during the adsorption process, and quickly restoring the original adsorption performance of the biochar, ensuring that the module can operate long-term, stably and efficiently without being affected by adsorption saturation. The pressure monitoring unit monitors the pressure inside the module in real time and keenly, providing key and accurate pressure data support for the stable and safe operation of the system. Once there is any abnormal fluctuation or deviation from the normal range of pressure, an alarm signal can be issued in time, and corresponding effective measures can be taken quickly to ensure the normal operation of the system. The intelligent control and operation and maintenance system includes an intelligent guide rail and manipulator unit, a monitoring and display unit, a remote control unit and a data analysis and prediction unit. The intelligent guide rail and manipulator unit is used to provide the manipulator with precise moving path and operation support. The monitoring and display unit is used to display the operating status, water quality data and equipment status information of the sewage treatment plant in real time. The remote control unit is used to realize the remote operation and management of the sewage treatment system by the staff. The data analysis and prediction unit is used to analyze and process the collected data.

[0030] The intelligent guide rail and manipulator unit provides the manipulator with an extremely precise and stable moving path and solid and reliable operating support, so that the manipulator can perform complex and critical operation and maintenance tasks such as equipment inspection, maintenance and cleaning efficiently and accurately like a flexible dancer, greatly reducing the intensity and potential risks of manual operation, and improving the efficiency and quality of operation and maintenance. The monitoring and display unit displays the full range of operating status of the sewage treatment plant, accurate water quality data and detailed equipment status information in a real-time, clear and intuitive manner, just like providing a clear panoramic view for operators, providing a solid basis for them to make wise and timely decisions. The remote control unit breaks the limitations of space and distance, allowing staff to remotely operate and manage the sewage treatment system through convenient network connections, greatly improving the convenience and flexibility of work, and being able to control the overall situation no matter where they are. The data analysis and prediction unit deeply mines and finely analyzes the collected data, and uses advanced algorithms and intelligent models to predict potential problems and future trends, providing a scientific and accurate basis for optimizing operation strategies and preventing failures in advance, just like installing foresight eyes for the stable operation of the system. The sustained-release drug regulation module includes a drug storage and drug release control unit, a sustained-release carrier unit and a feedback regulation unit. The drug storage and drug release control unit is used to store the sustained-release drug and accurately control its release rate and dosage. The sustained-release carrier unit is used to carry and control the slow release process of the drug. The feedback regulation unit is used to adjust and optimize the drug release in real time according to the monitoring data.

[0031] The drug storage and drug release control unit stores the sustained-release drugs safely and reliably, and controls the speed and dosage of their release with extremely high precision, ensuring that the drugs are put into the reaction at the most appropriate time and with the most accurate measurement, thereby significantly improving the treatment effect and avoiding waste and excessive use of drugs. The sustained-release carrier unit carefully carries and cleverly controls the slow release process of the drugs, like a precise clock, ensuring the continuity and stability of the drug's action, providing lasting, stable and just the right support for the electrochemical reaction, ensuring the efficient conduct of the reaction. The feedback regulation unit, with the strong support of real-time monitoring data, makes intelligent and sensitive adjustments and optimizations to the drug release, and can respond quickly and accurately to various changes in the treatment process, ensuring that the drug release is always perfectly matched with the treatment requirements, like a keen conductor, ensuring the harmony and efficiency of the entire treatment process.

[0032] The low-carbonization and resource recycling system includes an energy recovery unit, a solar energy utilization unit, a waste heat recovery unit, a resource recovery unit, a sewage treatment and reuse unit and a carbon emission monitoring unit. The energy recovery unit is used to collect and utilize the energy generated in the sewage treatment process. The solar energy utilization unit is used to convert solar energy into electrical energy or thermal energy. The waste heat recovery unit is used to recover waste heat in the sewage treatment process. The resource recovery unit is used to extract useful substances in sewage. The sewage treatment and reuse unit is used to further purify the treated sewage. The carbon emission monitoring unit is used to monitor carbon emissions during the operation of the system.

[0033] The energy recovery unit efficiently collects and cleverly utilizes the energy generated during the sewage treatment process, and achieves energy self-sufficiency and efficient recycling by converting it into usable electrical energy or thermal energy, reducing dependence on external energy and improving energy utilization efficiency. The solar energy utilization unit fully utilizes the huge potential of clean solar energy, converts it into stable electrical energy or thermal energy, injects green and renewable energy power into the entire system, and further reduces the consumption of traditional non-renewable energy. The waste heat recovery unit effectively recovers the waste heat generated during the sewage treatment process, and uses this part of energy that may have been wasted for heating water or other key links that require thermal energy, greatly improving the comprehensive utilization efficiency of energy and maximizing the utilization of energy. The resource recovery unit relies on precise technology Means, valuable and useful substances such as nitrogen and phosphorus are extracted from sewage, and valuable and useful substances such as nitrogen and phosphorus are recycled and reused. This not only reduces resource waste, but also creates additional economic value, and promotes the transformation of sewage treatment to resource recovery. The sewage treatment reuse unit further deeply and finely purifies the treated sewage to meet strict reuse standards. It can be widely used in industrial production, agricultural irrigation, urban landscape and many other fields, greatly reducing the demand for fresh water resources and realizing the recycling of water resources. The carbon emission monitoring unit monitors the carbon emissions in real time, accurately and strictly during the operation of the system, providing key data support for taking targeted and effective emission reduction measures, helping the entire system achieve the goal of low-carbon operation, and contributing to environmental protection and sustainable development.

[0034] A temperature control unit is provided in the biochar adsorption and filtration module, the intelligent control and operation and maintenance system, and the electrochemical denitrification and phosphorus removal device, and a stirring device is provided in the intelligent control and operation and maintenance system, the electrochemical denitrification and phosphorus removal device, and the slow-release agent regulation module.

[0035] The operation method of the electrochemical and biochar-based low-carbon sewage treatment system of this embodiment includes the following steps: Step 1: Collect the wastewater to be treated into the regulating tank for preliminary sedimentation and screen filtration to remove larger solid impurities and floating objects, and adjust the flow and water quality of the wastewater to make it uniform and stable, so as to prepare for subsequent treatment; Step 2: The pretreated sewage first enters the first-stage deep treatment filter tank, where the coarse filter material removes larger particle impurities. Then, the sewage flows through the second-stage deep treatment filter tank and subsequent filter tanks in turn. The filter material and biofilm in each filter tank work together to finely filter the sewage and adsorb and remove organic matter, nitrogen, and phosphorus pollutants. In this process, the operating parameters of the filter tank, such as filtration speed and backwashing cycle, are adjusted according to the real-time changes in the influent water quality and water volume to ensure the efficient operation of the filter tank. Step 3: The sewage flowing out of the deep treatment filter tank enters the reaction tank of the electrochemical denitrification and phosphorus removal device. The power supply unit provides stable voltage and current to drive the electrochemical reaction and remove nitrate, phosphate and fluoride ions. The electrolyte circulation unit ensures that the electrolyte is continuously and evenly distributed and optimizes the reaction conditions. The monitoring and control unit closely monitors the reaction parameters and adjusts the power output and reaction environment in time according to the feedback information. The gas generated by the reaction is discharged in time by the gas discharge unit. The solution after the reaction is filtered and separated by a separation unit to remove precipitation and impurities. Step 4: The sewage that has completed the electrochemical treatment enters the biochar adsorption and filtration module. Under the action of the water inlet distribution unit, the sewage is evenly contacted with the biochar filling unit. The biochar efficiently adsorbs organic pollutants and trace heavy metals. The treated effluent is collected by the effluent collection unit. The backwash unit regularly washes the biochar to remove the adsorbed impurities and restore its adsorption performance. The pressure monitoring unit monitors the internal pressure of the module throughout the process. Step 5: According to the real-time water quality and treatment requirements of the sewage, the agent storage and agent release control unit in the slow-release agent regulation module accurately controls the release speed and dosage of the slow-release agent. The slow-release carrier unit ensures the slow and stable release of the agent to enhance the treatment effect. The feedback regulation unit adjusts the agent release strategy in real time according to the monitoring data to adapt to changes in the treatment process. Step 6: The intelligent control and operation and maintenance system plays a key role in the entire treatment process. The intelligent guide rail and manipulator unit automatically inspects and maintains the equipment according to the preset program. The monitoring and display unit displays the overall operation status, water quality data and equipment status of the sewage treatment plant in real time. The remote control unit enables the staff to remotely control and manage the system. The data analysis and prediction unit deeply analyzes the collected data, predicts potential problems in advance, and formulates optimization strategies; Step 7: The energy recovery unit collects and utilizes the biogas energy generated during the sewage treatment process. The solar energy utilization unit converts solar energy into electrical energy or thermal energy to supplement the system energy consumption. The waste heat recovery unit recovers waste heat for heating the water inlet. The resource recovery unit extracts useful nitrogen and phosphorus substances from the sewage to achieve resource reuse. The sewage treatment and reuse unit further purifies the sewage that has been treated to meet the standards and meets the reuse standards for use in industry and greening fields. The carbon emission monitoring unit continuously monitors carbon emissions to provide a basis for emission reduction. Step eight, conduct strict water quality testing on the treated effluent. After all indicators meet the discharge standards, it will be safely discharged or reused. If it does not meet the standards, it will be returned to the corresponding treatment link for further treatment until it meets the standards.

[0036] Embodiment 2 The second embodiment of the present invention is based on the same inventive concept and proposes a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the steps of the image recognition method of the above embodiment are implemented.

[0037] Embodiment 3 The third embodiment of the present invention is based on the same inventive concept and proposes a terminal, which includes: a processor and a memory; the processor and the memory communicate with each other; the memory is used to store instructions; the processor is used to execute the instructions in the memory to execute the image recognition method of the above embodiment.

[0038] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The sewage low-carbon treatment system based on electrochemistry and biochar is characterized by: include: Deep treatment filter, electrochemical denitrification and phosphorus removal device, biochar adsorption filtration module, intelligent control and operation and maintenance system, slow-release agent regulation module and low-carbonization and resource recycling system; The deep treatment filter is used to filter sewage impurities and particles, adsorb and remove organic matter, reduce the content of nitrogen and phosphorus nutrients, and adapt to changes in water quality and quantity; The electrochemical denitrification and dephosphorization device is used to perform electrochemical reactions to remove nitrates, phosphates and fluoride ions; The biochar adsorption and filtration module is used to adsorb organic pollutants and remove trace heavy metals; The intelligent control and operation and maintenance system is used to monitor sewage treatment parameters and adjust treatment process operation parameters, as well as predict equipment failures; The slow-release agent control module is used to control the release rate and dosage of the slow-release agent, maintain the stability of the electrochemical reaction, reduce excessive use of the agent, and adapt to the treatment requirements of different water quality conditions; The low-carbonization and resource recycling system is used to recover energy in the sewage treatment process, reduce carbon emissions, and extract and recover useful resources in the sewage.

2. The electrochemical and biochar-based low-carbon sewage treatment system according to claim 1 is characterized in that: The deep treatment filter includes a filter unit, a supporting layer unit and a water collection system unit. The filter unit is used for preliminary filtration, the supporting layer unit is used to support filter material, and the water collection system unit is used to collect clean water after filtration treatment. The filter unit includes a first-order deep treatment filter, a second-order deep treatment filter and an N-order deep treatment filter.

3. The electrochemical and biochar-based low-carbon sewage treatment system according to claim 1 is characterized in that: The electrochemical denitrification and dephosphorization device includes a reaction cell, an electrolyte circulation unit, a power supply unit, a monitoring and control unit, a gas exhaust unit and a filtration and separation unit. The reaction cell is used to provide a space for electrochemical reactions. The electrolyte circulation unit is used to allow the electrolyte to flow continuously and be evenly distributed in the reaction cell. The power supply unit is used to provide stable voltage and current to the electrochemical reaction. The monitoring and control unit is used to obtain various parameters during the electrochemical reaction in real time. The gas exhaust unit is used to promptly exhaust the gas generated by the electrochemical reaction. The filtration and separation unit is used to filter and separate the precipitate or impurities after the reaction.

4. The electrochemical and biochar-based low-carbon sewage treatment system according to claim 1 is characterized in that: The biochar adsorption and filtration module includes a biochar filling unit, an inlet distribution unit, an outlet collection unit, a backwash unit and a pressure monitoring unit. The biochar filling unit is used to fill biochar materials, the inlet distribution unit is used to evenly distribute sewage entering the module, the outlet collection unit is used to collect the outlet water after biochar adsorption and filtration treatment, the backwash unit is used to backwash the biochar to remove adsorbed impurities, and the pressure monitoring unit is used to monitor the pressure conditions inside the module.

5. The electrochemical and biochar-based low-carbon sewage treatment system according to claim 1 is characterized in that: The intelligent control and operation and maintenance system includes an intelligent guide rail and manipulator unit, a monitoring and display unit, a remote control unit and a data analysis and prediction unit. The intelligent guide rail and manipulator unit is used to provide the manipulator with an accurate moving path and operation support. The monitoring and display unit is used to display the operating status, water quality data and equipment status information of the sewage treatment plant in real time. The remote control unit is used to realize the remote operation and management of the sewage treatment system by the staff. The data analysis and prediction unit is used to analyze and process the collected data.

6. The electrochemical and biochar-based low-carbon sewage treatment system according to claim 1 is characterized in that: The sustained-release drug regulation module includes a drug storage and drug release control unit, a sustained-release carrier unit and a feedback regulation unit. The drug storage and drug release control unit is used to store the sustained-release drug and accurately control its release speed and dosage. The sustained-release carrier unit is used to carry and control the slow release process of the drug. The feedback regulation unit is used to adjust and optimize the drug release in real time according to monitoring data.

7. The electrochemical and biochar-based low-carbon sewage treatment system according to claim 1 is characterized in that: The low-carbonization and resource recycling system includes an energy recovery unit, a solar energy utilization unit, a waste heat recovery unit, a resource recovery unit, a sewage treatment and reuse unit and a carbon emission monitoring unit. The energy recovery unit is used to collect and utilize the energy generated in the sewage treatment process, the solar energy utilization unit is used to convert solar energy into electrical energy or thermal energy, the waste heat recovery unit is used to recover waste heat in the sewage treatment process, the resource recovery unit is used to extract useful substances in the sewage, the sewage treatment and reuse unit is used to further purify the treated sewage, and the carbon emission monitoring unit is used to monitor the carbon emissions during the operation of the system.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the electrochemical and biochar-based low-carbon and zero-emission sewage treatment system is implemented as described in any one of claims 1 to 7.

9. A readable storage medium, characterized in that: The readable storage medium stores a computer program, and when the computer program is executed by the processor, it implements the electrochemical and biochar-based low-carbon and zero-emission sewage treatment system as described in any one of claims 1 to 7.

10. The electrochemical and biochar-based low-carbon sewage treatment system according to claim 1, characterized in that: The operation method of the system comprises the following steps: Step 1: Collect the wastewater to be treated into the regulating tank for preliminary sedimentation and screen filtration to remove larger solid impurities and floating objects, and adjust the flow and water quality of the wastewater to make it uniform and stable, so as to prepare for subsequent treatment; Step 2: The pretreated sewage first enters the first-stage deep treatment filter tank, where the coarse filter material removes larger particle impurities. Then, the sewage flows through the second-stage deep treatment filter tank and subsequent filter tanks in turn. The filter material and biofilm in each filter tank work together to finely filter the sewage and adsorb and remove organic matter, nitrogen, and phosphorus pollutants. In this process, the operating parameters of the filter tank, such as filtration speed and backwashing cycle, are adjusted according to the real-time changes in the influent water quality and water volume to ensure the efficient operation of the filter tank. Step 3: The sewage flowing out of the deep treatment filter tank enters the reaction tank of the electrochemical denitrification and phosphorus removal device. The power supply unit provides stable voltage and current to drive the electrochemical reaction and remove nitrate, phosphate and fluoride ions. The electrolyte circulation unit ensures that the electrolyte is continuously and evenly distributed and optimizes the reaction conditions. The monitoring and control unit closely monitors the reaction parameters and adjusts the power output and reaction environment in time according to the feedback information. The gas generated by the reaction is discharged in time by the gas discharge unit. The solution after the reaction is filtered and separated by a separation unit to remove precipitation and impurities. Step 4: The sewage that has completed the electrochemical treatment enters the biochar adsorption and filtration module. Under the action of the water inlet distribution unit, the sewage is evenly contacted with the biochar filling unit. The biochar efficiently adsorbs organic pollutants and trace heavy metals. The treated effluent is collected by the effluent collection unit. The backwash unit regularly washes the biochar to remove the adsorbed impurities and restore its adsorption performance. The pressure monitoring unit monitors the internal pressure of the module throughout the process. Step 5: According to the real-time water quality and treatment requirements of the sewage, the agent storage and agent release control unit in the slow-release agent regulation module accurately controls the release speed and dosage of the slow-release agent. The slow-release carrier unit ensures the slow and stable release of the agent to enhance the treatment effect. The feedback regulation unit adjusts the agent release strategy in real time according to the monitoring data to adapt to changes in the treatment process. Step 6: The intelligent control and operation and maintenance system plays a key role in the entire treatment process. The intelligent guide rail and manipulator unit automatically inspects and maintains the equipment according to the preset program. The monitoring and display unit displays the overall operation status, water quality data and equipment status of the sewage treatment plant in real time. The remote control unit enables the staff to remotely control and manage the system. The data analysis and prediction unit deeply analyzes the collected data, predicts potential problems in advance, and formulates optimization strategies; Step 7: The energy recovery unit collects and utilizes the biogas energy generated during the sewage treatment process. The solar energy utilization unit converts solar energy into electrical energy or thermal energy to supplement the system energy consumption. The waste heat recovery unit recovers waste heat for heating the water inlet. The resource recovery unit extracts useful nitrogen and phosphorus substances from the sewage to achieve resource reuse. The sewage treatment and reuse unit further purifies the sewage that has been treated to meet the standards and meets the reuse standards for use in industry and greening fields. The carbon emission monitoring unit continuously monitors carbon emissions to provide a basis for emission reduction. Step eight, conduct strict water quality testing on the treated effluent. After all indicators meet the discharge standards, it will be safely discharged or reused. If it does not meet the standards, it will be returned to the corresponding treatment link for further treatment until it meets the standards.

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