8771 results about "Environmental protection" patented technology

The invention provides a sewage treatment system and method based on a large language model and multi-agent collaboration, and the system comprises a sensor network which is used for collecting the water quality parameters of sewage in real time; the monitoring agent is used for performing data verification on the water quality parameters; the at least one edge computing node is used for performing data preprocessing on the water quality parameters; the cloud decision intelligent agent is used for generating a sewage treatment strategy according to the preprocessed water quality parameters based on a large language model; the execution agent is used for executing the sewage treatment strategy and treating the sewage; the evaluation agent is used for analyzing and evaluating the sewage treatment effect and feeding back the sewage treatment effect to the cloud decision agent so as to optimize the sewage treatment strategy; by constructing an intelligent and dynamic treatment system, real-time monitoring, intelligent analysis and self-adaptive treatment of the mariculture sewage are realized, so that the sewage treatment stability and environmental protection benefits are improved, and the sustainable development of the mariculture industry is promoted.

The invention discloses a rapid culture method of aerobic granular sludge, and belongs to the technical field of sewage treatment. According to the invention, pharmaceutical factory sludge is used as a raw material to prepare pharmaceutical factory sludge biochar; an SBR reactor is constructed and operates in a water inlet-anoxic-aeration-precipitation-drainage mode, and pharmaceutical factory sludge biochar is added in the sludge inoculation process to promote rapid formation of system particles and stable operation. According to the method disclosed by the invention, the mature aerobic granular sludge with the capabilities of removing organic matters and synchronously denitrifying can be obtained by culturing for 30 days on average, so that the granulation process of the sludge is effectively improved, the forming time of the aerobic granular sludge is remarkably shortened, and the aerobic granular sludge has higher long-term operation stability.

The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.

The invention relates to the technical field of sewage treatment, in particular to a coupling control system and method for deep denitrification of sewage, and the system comprises a real-time water quality monitoring module, a microorganism twinborn modeling module, a real-time prediction module, an intelligent decision module, an execution mechanism module and a prediction regulation and control module. Compared with the prior art that a passive feedback control strategy based on an effluent quality index is generally adopted, the hysteresis quality is high, and violent fluctuation of an inflow load cannot be coped with; according to the method, a digital twinborn body capable of reflecting the functional state of a microbial community in real time is constructed, and a control target is improved from a traditional process parameter set point to direct optimization of microbial ecological functions; according to the invention, the method achieves the fundamental crossing from the control of technological parameters to the regulation and control of microbial ecology, can carry out intervention from the root of the reaction process, enables the system to have the active health management capability, and remarkably improves the stability of the treatment efficiency and the intelligent level of coping with complex working conditions.

The invention discloses a cyclic utilization and purification treatment system for slurry in pile foundation engineering construction. According to the invention, the purification treatment system is utilized to realize the double breakthrough of environmental friendliness and high resource efficiency in the construction process through the deep enabling of the intelligent regulation and control module. The system constructs a closed-loop management chain of the slurry life cycle by relying on full-process data perception and dynamic optimization capability. The intelligent regulation and control module captures fine changes of physical and chemical characteristics of the slurry in real time and automatically regulates the operation mode of the treatment equipment, so that the purified slurry always keeps the optimal engineering performance index, and the risk of pile body defects caused by quality fluctuation of the slurry is greatly reduced. By means of the intelligent design of the waste slurry recycling path, pollution sources in traditional construction are converted into reusable engineering materials, damage to the ecological environment caused by outward transportation and landfill of waste is remarkably reduced, and an engineering site is promoted to move towards the near-zero emission target.

A system and method for quantifying CO2 capture by photobioreactors using microalgal biomass are disclosed. The method involves accurately quantifying carbon dioxide capture by photobioreactors using microalgal biomasses involves determining a unique ratio relating carbon consumed to biomass produced for each microalgae strain. This ratio is then used to predict CO2 removal from flue gases or industrial processes based on the dry mass of the corresponding biomass produced. Machine learning models are also trained on data obtained from the photobioreactors to predict CO2 consumption rates under varying conditions, thereby enhancing the accuracy and efficiency of carbon capture technologies.

The present embodiment relates to a control method for a cleaning robot and a related device. The method comprises: acquiring a contaminant type and a contaminated area of a floor to be cleaned, wherein the contaminant type comprises a liquid contaminant; when there is the contaminated area having the liquid contaminant on the floor to be cleaned, turning a body of the cleaning robot around and driving the cleaning robot to perform a cleaning operation in a reversing posture, so as to use a wet cleaning member to clean the liquid contaminant in the contaminated area. The present invention solves the problem that a dry cleaning member of the cleaning robot is easily wetted when cleaning the liquid contaminant, improving the cleaning effect on the floor having the liquid contaminant.

The invention belongs to the technical field of water treatment, and particularly provides a fungus filament bamboo-based biomass composite material and a lead-containing sewage treatment method. According to the invention, the lead-containing sewage is pretreated by using microorganism neurospora crassa, and then the lead-containing sewage is post-treated by using the fungus filament bamboo-based biomass composite material prepared under specific conditions, so that the mildness of microorganism treatment and the efficient adsorbability of the biomass composite material are effectively combined; and finally, the removal rate of heavy metal lead is increased, the cost is low, and environmental friendliness is achieved.

The invention discloses an application of an electronic waste pollution human body exposure fingerprint spectrum in exposure risk prediction, and the human body exposure fingerprint spectrum is composed of more than three of exposure markers of 2, 4, 6-tribromophenol, 2, 4, 5-trichlorophenol, 4-bromophenol, 1-hydroxypyrene and bisphenol A. The invention further discloses an application of the electronic waste pollution human body exposure fingerprint spectrum in exposure risk prediction. According to the method, a systematic method of urine pollutant exposure omics is adopted for the first time, comprehensive screening and characterization of pollutant exposure markers related to specific components and by-products are achieved in electronic waste exposure worker groups, and the method is the most systematic organic pollutant exposure research known in the field at present.

The invention belongs to the technical field of wastewater denitrification treatment, and particularly relates to an anaerobic ammonia oxidation reaction-based integrated partitioned denitrification method which comprises the following steps: S1, removing high-concentration organic matters and suspended matters in wastewater through coagulating sedimentation or chemical oxidation pretreatment to avoid inhibition on subsequent Anammox; s2, partitioning the integrated reactor, and setting a short-cut nitrification region and an Anammox reaction region; s3, enabling the effluent part of the Anammox reaction zone to flow back to the short-cut nitrification zone, supplementing nitrite and balancing the carbon nitrogen ratio; the Anammox granular sludge flows back to the reaction zone through the settling zone, and the biomass concentration and the reaction efficiency are maintained; s4, a secondary sedimentation tank or a built-in sedimentation zone is arranged to achieve mud-water separation, residual sludge is discharged, and it is guaranteed that effluent reaches the standard, and it is guaranteed that the denitrification efficiency is stable by dynamically adjusting dissolved oxygen of the short-cut nitrification zone and the pH value of the Anammox reaction zone.

The invention discloses a biological nitrogen and phosphorus removal MBR sewage treatment system and a treatment process thereof. The process comprises the following steps: 1) pretreatment; 2) treatment in an anaerobic tank; (3) treating in an anoxic tank; 4) treatment in an aerobic tank; 5) MBR membrane pool treatment; sewage enters the box body through the water inlet, the moving mechanism drives the aeration mechanism and the scum cleaning mechanism to move, the aeration mechanism performs aeration treatment on the sewage in the box body, and when the aeration mechanism blows gas into the sewage through the branch gas pipe, bubbles can be scattered by spiral blades, so that the contact area between the gas and liquid is further increased, and the aeration effect is enhanced; when the sewage is subjected to aeration treatment, the scum after aeration treatment rises, the scum cleaning mechanism scrapes the scum floating after aeration for multiple times, collects the scraped scum and sends the scum out of the box body, impurities suspended in the middle layer of the sewage are fished, and the sewage after scum cleaning enters the next treatment procedure through the water outlet.

Various products, systems, and parts or components of such products and systems include a binder matrix (such as a polymer matrix) reinforced with carbon fibers and graphene particles. Inclusion of the carbon fibers and graphene particles substantially improves mechanical strength and utility of the resulting parts, components, and corresponding products and systems. The improvements facilitate substantial advances in various practices of fabrication using additive manufacturing techniques, which lend to applications in biomedical, industrial, agricultural, mechanical, energy generation, transmission, and storage, military, transportation, recreational, and other fields. The inventive materials are particularly well suited for manufacturing of parts for terrestrial vehicles, manned or unmanned aerial vehicles, and space-borne vehicles. Substantial improvements to mechanical strength are achieved even at very low levels of graphene loading (e.g., at about 0.1 wt %), such that the resulting products are substantially stronger than corresponding products lacking said graphene loading, while yet having substantially the same mass.

The invention discloses a waste wind power blade recycling process. The waste wind power blade recycling process comprises the following steps that S1, a waste wind power blade is cut into blocks; wherein manufacturing materials of the waste wind power blade comprise carbon fibers and epoxy resin; s2, the block is put into a swelling solution to be subjected to swelling treatment; wherein the swelling liquid comprises a swelling agent and a solvent, the swelling agent is an inorganic metal chloride, the solvent is composed of acetone and water, in the solvent, the mass percentage of acetone is 10-40%, the mass percentage of water is 60-90%, and in the swelling liquid, the molar concentration of the swelling agent is 0.004-0.1 M; s3, cracking the block subjected to swelling treatment to obtain a cracking product containing the inorganic filler and the carbon fiber material; and S4, recycling the carbon fiber material in the cracking product. The recycling process has the advantages of being efficient, environmentally friendly, low in cost and the like, and is suitable for large-scale resource recycling of the wind power blades.

The invention discloses an intelligent continuous pretreatment process for herbicide pesticide wastewater, relates to the technical field of pesticide wastewater pretreatment, and aims to solve the problem of poor removal effect of pesticide residues in wastewater. According to the method, Fenton oxidation, photocatalysis and other processes are accurately selected for different pollutants such as chlorinated organic compounds and triazines, the degradation pertinence is greatly improved, the pollutant removal rate is remarkably increased, all links are seamlessly connected, a pretreatment-deep purification closed loop is formed, the adaptability to complex pesticide wastewater is improved by 40% compared with a single process, and the method is suitable for industrial production. By combining the design of sludge combined treatment, gravity flow sludge discharge and the like, the energy consumption and the operation and maintenance cost are remarkably saved, a multi-stage monitoring and parameter dynamic adjustment mechanism is adopted, the reaction conditions can be timely corrected, the blind feeding of chemicals is reduced, the treatment effect is ensured, the waste of consumables is reduced, and the economic benefit is increased. Compared with the traditional process, the medicament consumption is reduced by more than 30%.

The invention belongs to the technical field of organic pollution treatment, and relates to a biochar-LDH-nZVI-GO composite material for organic pollution remediation and a preparation method and application thereof.The preparation method comprises the steps that graphene oxide is ultrasonically dispersed in deionized water, magnesium salt and aluminum salt are added to form uniform suspension liquid, then the uniform suspension liquid is mixed with biochar suspension liquid, and the biochar-nZVI-GO composite material is obtained; carrying out pH (Potential of Hydrogen) regulation and a hydrothermal crystallization reaction, so as to prepare a biochar-Mg / Al-LDH-GO compound; and dispersing the compound in an organic solvent, sequentially adding FeSO4. 7H2O and a NaBH4 solution in an inert atmosphere to carry out a reduction reaction, and finally washing and drying to obtain the biochar-LDH-nZVI-GO composite material. The material shows high-efficiency removal capacity on various organic pollutants such as trichloroethylene, chlorobenzene and polychlorinated biphenyl, is suitable for high-efficiency green remediation of organic pollutants in soil and water, and has good popularization and application prospects.

The present application provides a control method for adding a carbon source to sewage treatment, which relates to the technical field of sewage treatment, comprising the following steps: obtaining water inlet parameters of the sewage to be treated and process parameters of the treatment section, the water inlet parameters including chemical oxygen demand, total nitrogen, total phosphorus and flow rate, and the process parameters including phosphate concentration at the end of the anaerobic tank, nitrate concentration at the end of the anoxic tank, total nitrogen and chemical oxygen demand of the denitrification filter inlet; dynamically calculating and predicting the carbon-nitrogen ratio and the carbon-phosphorus ratio in real time based on the water inlet parameters and the process parameters; determining a carbon source addition point and a first carbon source addition amount based on the predicted carbon-nitrogen ratio, the predicted carbon-phosphorus ratio and a preset effluent water quality standard, the carbon source addition point including at least one of the anaerobic tank, the anoxic tank and the denitrification filter; controlling a carbon source addition device to perform corresponding addition operations based on the carbon source addition point and the first carbon source addition amount, and avoiding excessive COD caused by excessive carbon source through segmented addition and closed-loop control, thereby effectively suppressing secondary pollution.

The invention discloses a sewage pipeline defect detection method and system based on an improved YOLO11 network. The sewage pipeline defect detection method comprises the following steps that a pipeline CCTV robot is used for collecting a defect image sample in a sewage pipeline; the YOLO11n basic network is improved by using an MSGA module, an AIFI module and a positioning loss function Wise-Inner-IoU so as to construct a sewage pipeline defect model; inputting the acquired defect image sample in the sewage pipeline into a sewage pipeline defect model for training, and performing data enhancement on the acquired defect image sample in real time by adopting a Python library Albumentations in the training process; and inputting the defect target image in the to-be-detected sewage pipeline into the trained sewage pipeline defect model to obtain a defect detection result in the to-be-detected sewage pipeline. According to the method, the detection precision is improved, the capturing capability of target structure information under a complex background and the sensitivity to defects are enhanced, and a better detection effect is achieved.

The invention discloses a biological environment-friendly clothing material with a self-cleaning function and a preparation method of the biological environment-friendly clothing material. According to the invention, the environmental friendliness is obviously improved, and natural components which can be completely biodegraded are adopted and can be quickly decomposed in the natural environment, so that the micro-plastic pollution is reduced; the self-cleaning function is enhanced, and through the synergistic effect of the bionic hydrophobic surface and photocatalytic decomposition, automatic falling and decomposition of stains are achieved; the durability is enhanced, a dynamic self-repairing network can automatically repair daily wear, the service life is prolonged, and the bio-based raw materials are natural, skin-friendly and excellent in air permeability. The supercritical fluid processing and microwave shaping technology replaces a high-energy-consumption process; emission of toxic substances is eliminated, and organic solvents and fluorine-containing compounds are forbidden in the whole process; raw material loss is reduced, and the using amount of functional materials is reduced through an accurate structure regulation and control technology; the maintenance cost is simplified, and the washing frequency and the use of chemical cleaning agents are reduced due to the self-cleaning characteristic; waste is compressed, and resource utilization of by-products is achieved through a closed-loop production system.

Activatable indicator platforms for integrated circuits using microencapsulation are disclosed herein. An example activatable indicator platform includes an RFID tag, including an antenna; an integrated circuit, electrically connected to the antenna; an electrical loop having an open state and a closed state, the electrical loop electrically connected to the integrated circuit; an activatable environmental exposure indicator included as a portion of the electrical loop, the indicator having a conductive state and a nonconductive state, such that the electrical loop is in the closed state when the activatable environmental exposure indicator is in the conductive state and the electrical loop is in the open state when the activatable environmental exposure indicator is in the nonconductive state.

The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.

The invention discloses a method and system for identifying perfluorooctanoic acid pollutants in tap water, and relates to the field of water environment new pollutant detection, and the method comprises the steps of SERS spectral signal collection, signal preprocessing, bimodal learning device construction and training verification, and concentration prediction result generation based on numerical value and image bimodal. The to-be-predicted data is put into the trained bimodal learning device for prediction and identification, and the concentration of the detection sample is output, so that batch rapid detection based on surface enhanced Raman spectroscopy and bimodal deep learning is realized, and high-precision identification and prediction based on small sample data are realized; the accurate detection result of the perfluorooctanoic acid pollutants in the tap water is obtained.

The invention relates to the technical field of environmental restoration, in particular to a slow-release material for synergistically restoring heavy metal and organic compound contaminated soil based on modified biochar and microorganisms and an application method thereof.The slow-release material is prepared from, by weight, 50-80 parts of modified biochar, 30-40 parts of sodium alginate, 10-20 parts of gelatin, 5-10 parts of glycerin and 3-5 parts of calcium carbonate. The multi-modified biochar is prepared from, by weight, 300-400 parts of a functional flora mixed solution and 5-10 parts of mixed nutrient elements of glucose, yeast extract and KHPO, and through the synergistic effect of the multi-modified biochar and the functional flora, efficient immobilization (the immobilization rate gt is 60%) of heavy metal (lead, cadmium and chromium) and efficient degradation (the degradation rate gt is 70%) of organic pollutants (polycyclic aromatic hydrocarbon and petroleum hydrocarbon) are achieved.

The invention relates to the technical field of mine solid waste treatment and carbon dioxide sealing and storage, and particularly discloses a system and a method for sealing and storing carbon dioxide by utilizing coal-based solid waste and mine water to prepare slurry. The system comprises a cement bin, a gangue bin, a coal ash bin, a gasified slag bin, a mine water storage tank, a stirring reaction kettle, a carbon dioxide storage tank, a slurry temporary storage tank, a vacuum pump and a slurry pump, and the stability and adsorption efficiency of carbon dioxide fixation are improved in the mode that coal-based solid waste, mine water and carbon dioxide are subjected to chemical reaction and physical adsorption; meanwhile, the prepared backfill slurry has high-strength anti-pressure ability, the stability of the backfilled underground goaf is better improved, further, coal-based solid waste and mine water are utilized for waste recycling, and the carbon dioxide storage cost is reduced.

The invention discloses a road cementing material based on bulk solid wastes and a preparation method thereof, and belongs to the field of geopolymer cementing materials. The material is prepared from 35-38 parts of fly ash, 15-18 parts of acid-washed red mud, 22-25 parts of carbide slag, 20-23 parts of phosphogypsum, 5-8 parts of rice hull ash, 6-9 parts of a water reducing agent and water, and the water-binder ratio is (0.4-0.5): 1. Wherein the pickling red mud is treated by 5-6% dilute sulphuric acid (pH is 8-9, and heavy metal is reduced by 30%), and the rice hull ash (SiO2 is greater than or equal to 85%) and the nano silicon dioxide (10-30nm) synergistically optimize the microstructure. The 28-day compressive strength of the material is larger than or equal to 35 MPa, the load cycle strength loss rate is smaller than or equal to 5%, the CO2 emission amount is 62 kg / t, the heavy metal leaching concentration is lower than the national standard by 50%, and the cost is only 31.6% of that of traditional cement. According to the invention, efficient synergistic utilization of four solid wastes of fly ash, red mud, carbide slag and ardealite is realized, and the concrete has the characteristics of high strength, low pollution, salt corrosion resistance and the like, is suitable for heavy-duty road base and severe cold area engineering, and has remarkable environmental protection and economic values.

The invention discloses a carbon dioxide sensitive material and a carbon dioxide sensor, the carbon dioxide sensitive material is formed by compounding Co-Ni LDH and PEI, and the mass ratio of Co-Ni LDH to PEI is (0.2-20): 1; the invention also provides a carbon dioxide sensor prepared from the sensitive material, the carbon dioxide sensor can realize high-sensitivity detection on 15-900ppm carbon dioxide under the environment of room temperature and 50-70% RH humidity, the response value on 15ppm carbon dioxide can reach 25%, the response value on 500ppm CO2 can reach 377.8%, the response value on 900ppm carbon dioxide can reach 713%, and the response value on 15ppm CO2 can reach 377.8%. The problems that an existing carbon dioxide sensor is high in working temperature and low in detection sensitivity are solved, the testing environment range is widened, and high-sensitivity detection of carbon dioxide can be achieved in the environment with the RH of 50%-70%.

The invention relates to the technical field of environment-friendly additives, and discloses an environment-friendly additive for soil pollution remediation and an application method thereof.The environment-friendly additive is prepared from 5-20 parts of nano zero-valent iron, 2-15 parts of a nano carbon material and 3-18 parts of a nano mineral composite material; 5-25 parts of biochar, 2-10 parts of microbial flora and 1-10 parts of a plant source extract; 1-8 parts of a pH responsive material; 2-10 parts of a microcapsule material; the particle size range of the nanoscale zero-valent iron is 10-100 nm, and SiO2 or C is coated on the surface of the nanoscale zero-valent iron; the nano carbon material is selected from activated carbon nanoparticles, graphene and carbon nanotubes. The carbon-coated nano zero-valent iron is adopted, so that the technical effects of improving the oxidation resistance of the material and prolonging the active life are achieved. Compared with a traditional technical scheme without coating nZVI, the problems that the composite material is prone to oxidation inactivation and insufficient in long-term repair capacity are solved, and the composite material has more stable heavy metal removal performance in a complex environment.

The invention discloses forest steppe fire extinguishing barrier foam and a preparation method thereof.The foam is prepared from 5%-20% of a material A, 0.5%-0.8% of a material B, 1.8%-3% of a coagulant and the balance water through a foam generation system; the material A is prepared from 1 to 10 parts of organic aggregate and 100 to 200 parts of inorganic aggregate; the material B is composed of 2-7 parts of a composite surfactant and 1-6 parts of a cross-linking agent; the coagulant is carbon dioxide gas. The inorganic aggregate is condensed under the action of hydrogen ions generated by dissolution of carbon dioxide to form colloidal particles, the colloidal particles are polymerized and crosslinked with the organic aggregate to form a gel skeleton of a three-dimensional network structure, the foam is converted into gel foam, and a heat-insulating and anti-burning barrier layer is formed on the surface of a combustible. The fire extinguishing agent is high in fire extinguishing efficiency, good in heat insulation effect and environment-friendly, and has wide application prospects in forest and grassland fire disasters.

The invention belongs to the technical field of sewage treatment, and particularly relates to an anaerobic ammonia oxidation-photoelectric denitrification deep nitrogen removal method. The method comprises the following steps: firstly, adopting a double-chamber reactor; introducing part of sewage into the cathode chamber, carrying out Anammox reaction under a dark state condition to remove ammonia nitrogen and part of nitrite nitrogen, and synchronously generating nitrate nitrogen; turning on a light source to irradiate the anode chamber, exciting photo-induced electrons by a photosensitizer, transmitting the photo-induced electrons to the cathode chamber through an external circuit, and driving the sulfur autotrophic denitrification sludge to reduce residual nitrite nitrogen and nitrate nitrogen generated by Anammox; the total nitrogen removal rate is close to 100%. According to the invention, photo-induced electrons are used as the only denitrification electron donor, so that the addition of a carbon source / sulfide is thoroughly avoided, and the risk of secondary pollution is eliminated. The method is suitable for green low-carbon deep treatment of sludge digestion liquid and pharmaceutical wastewater high-ammonia-nitrogen low-carbon-nitrogen-ratio sewage.

The invention relates to the technical field of organic fertilizer preparation and waste recycling, in particular to a food industrial park wastewater recycling and sludge resourceful treatment method which comprises the following steps: step 1, dynamically partitioning wastewater and cooperatively separating grease, monitoring the conductivity and turbidity of wastewater at water outlets of all workshops in real time, and dynamically dividing wastewater load grades according to monitored values; step 2, coupling biological treatment and carbon source circulation, inputting the effluent in the step 1 into an anaerobic reactor according to a real-time COD load ratio, adding a sludge glycolysis solution as a carbon source supplement, and dynamically adjusting the adding amount based on the ratio of volatile fatty acid to alkalinity; step 3, catalytic oxidation-membrane coupling advanced treatment: carrying out catalytic ozonation on aerobic effluent through sludge-based activated carbon, and adjusting the filling amount of a catalyst in a stepped manner along with characteristic parameters of organic matters in the effluent; 4, directional glycolysis of the sludge and closed-loop utilization of products. Through monitoring and dynamic adjustment, the problems of high energy consumption, low treatment efficiency, resource waste and the like in a traditional wastewater treatment method are effectively solved.

The invention provides a low C / N sewage nitrogen and phosphorus removal method based on MABR-DPR-anaerobic ammonia oxidation, which couples anaerobic, membrane aeration anoxic and anaerobic ammonia oxidation processes, forms an anoxic environment in a water phase of a membrane aeration reactor, and enriches denitrifying phosphorus-accumulating bacteria. And the anaerobic phosphorus release and anoxic denitrification nitrogen and phosphorus removal processes of the denitrifying phosphorus-accumulating bacteria are realized through the backflow of the sludge between the anaerobic tank and the membrane aeration reactor. Nitrite accumulated in effluent of the membrane aeration reactor supplements an electron acceptor for a subsequent anaerobic ammonia oxidation deep denitrification process, and meanwhile, a carbon source is obviously consumed in an anoxic denitrification nitrogen and phosphorus removal process of the membrane aeration reactor, so that inhibition of influent organic matters on an anaerobic ammonia oxidation process is effectively weakened. The process solves the problem that the carbon source is seriously insufficient in the nitrogen and phosphorus removal process of the low C / N sewage, and the stable and efficient nitrogen and phosphorus removal effect can still be maintained under the condition that an external carbon source is not needed.