199 results about "Contamination control" patented technology

The invention discloses a method and system for evaluating the influence of long-term fertilization on rice field soil heavy metals, and the method comprises the steps: obtaining rice field soil data through a sensor, and obtaining a standardized soil physicochemical property data set and a heavy metal content data set; according to the standardized soil physicochemical property data set and the heavy metal content data set, obtaining a feature vector set reflecting correlation between soil physicochemical properties and heavy metal behaviors; aiming at the feature vector set, obtaining a prediction model for representing the influence of the fertilization mode on the heavy metal mobility; if the heavy metal effective state content output by the prediction model exceeds a preset bioavailability threshold value, classifying the soil physicochemical property data set, judging the influence weight of the soil pH value and the organic matter content on the cadmium mobility, and obtaining the classified soil environment risk grade; and according to the classified soil environment risk levels, obtaining comprehensive rice field soil heavy metal pollution evaluation indexes. The pertinence and effectiveness of pollution control are remarkably improved.

The invention provides an intelligent maintenance cleaning device for nanofiltration membrane pollution control and a method thereof, and solves the problems of low maintenance cleaning efficiency, poor adaptability of cleaning parameters and pollution conditions and frequent chemical cleaning of an existing nanofiltration system. Belongs to the technical field of membrane pollution control. According to the invention, the filtering system, the cleaning system and the intelligent decision-making module are integrally designed, so that the closed-loop control of the whole process of real-time monitoring, pollution identification, intelligent decision-making and automatic cleaning of the running state of the nanofiltration membrane is realized. The cleaning effect gating memory neural network model is used as a membrane pollution prediction model, membrane pollution can be accurately predicted, and key cleaning nodes can be identified. The optimal membrane cleaning parameters are generated by adopting a non-dominated sorting genetic algorithm, the usage amount of chemical agents and the cleaning cost are reduced, and the membrane pollution control effect is improved. The invention is applicable to the field of drinking water treatment.

The invention provides a cyanide-containing wastewater resource recovery and cyclic utilization method, and belongs to the technical field of environmental protection and water treatment. According to the method, firstly, copper is collected through sulfuration under the weak acid condition with the pH being 5-6, so that a copper-cyanogen complex ([Cu (CN) 43-]) in wastewater is converted into a mixed material of copper sulfide (CuS) and cuprous cyanide (CuCN), and primary recovery of copper is achieved; and then, adding a pH regulator 2 to control the pH of the reaction system to be 9-11, adding a separation agent to control the ORP of the reaction system to be-400mV to-200mV, and carrying out a separation reaction. In the process, cuprous cyanide reacts with free cyanide (CN <->) to generate a soluble copper-cyanogen complex, and copper sulfide is retained, so that cuprous cyanide is accurately separated from the copper-containing material, the content of cyanide in the material is reduced, and the obtained copper-containing material meets the requirements of industrial product quality standards and pollution control standards; the problems that in the prior art, the cyanide content in the copper-containing material obtained by recycling copper from the cyanide-containing wastewater exceeds the standard, and the environmental risk is high in storage, transportation and comprehensive utilization are solved.

The invention relates to a calcium-based difunctional composite material and a preparation method and application thereof, the calcium-based difunctional composite material is applied to pollution control in a sludge-low-rank coal co-pyrolysis process, the calcium-based difunctional composite material is composed of Ca2Fe2O5 and an adsorptive material, and the mass ratio of Ca2Fe2O5 to the adsorptive material is 1: 1. According to the calcium-based bifunctional composite material, the fixation rate of sulfur in pyrolytic carbon is remarkably increased, conversion of heavy metal to a more stable form is facilitated, and the leaching capacity and potential ecological risks of the heavy metal are remarkably reduced.

The invention discloses a pollution emission monitoring and early warning method based on physical prior and information value driving, and relates to the technical field of environment monitoring and pollution control, and the method comprises the following steps: collecting production side certificate data, executing time alignment and self-calibration drift removal, and constructing a standardized multi-source database; judging whether a heat island effect occurs or not, and if yes, collecting volume heat capacity, solar irradiance and heat island intensity data of a single building; according to the method, the heat island effect is introduced to judge and generate a new time-space diagram network, real-time heat island intensity changes caused by building materials and solar irradiation can be dynamically captured, and building wind field and plume data are accurately corrected. The problem that a conventional method cannot adapt to irregular fluctuation of vertical wind shear caused by the real-time heat island effect is solved, the pollution plume low-altitude compression phenomenon caused by the heat island effect is effectively corrected, and the monitoring direction is always aligned with the real diffusion path of pollutants.

The invention relates to a reverse osmosis membrane pollution control method based on green biological scale inhibition, which is especially suitable for reverse osmosis membrane pollution treatment in an industrial wastewater zero discharge system. The method comprises the following steps: regulating and controlling the composition of organic components of inlet water through a sand filtration pretreatment unit, and directly interfering the nucleation and crystallization processes of inorganic scaling on a membrane surface by utilizing naturally enriched microbial communities and extracellular polymeric substances thereof in a sand filtration process without adding a fungicide or a chemical scale inhibitor, so as to form a loose and reversible pollution layer structure. The method effectively reduces the scaling rate of inorganic salts such as calcium carbonate and the like, inhibits membrane surface biological pollution, delays compaction of a pollution layer, improves the membrane flux retention rate, prolongs the membrane operation cycle and reduces the cleaning frequency. Compared with an existing traditional physical or chemical pretreatment method, the natural scale inhibition effect of an ecological system in the sand filtration unit is fully utilized, and the method has the remarkable advantages of being low in operation cost, environmentally friendly, high in adaptability and the like.

The invention discloses a method for repairing alkaline cadmium-polluted farmland in arid and semi-arid regions and application of the method, and belongs to the technical field of soil repairing. According to the method, the alkaline cadmium polluted farmland soil in the arid and semi-arid areas is subjected to deep ploughing treatment, and organic materials are applied to improve the soil fertility and the environment and health quality. On the basis, an intercropping planting system suitable for the arid and semi-arid land area is constructed, low-cadmium-accumulation grain crops and high-cadmium-accumulation plants are reasonably selected according to the ecological conditions and crop characteristics of the area, and an intercropping combination of low-absorption grain crops and enriched economic crop plants is formed. According to the system, organic unification of source reduction of heavy metal pollution in soil, pollution control in the planting process and continuous and safe utilization of the farmland is achieved, the dual goals of pollution remediation and farmland production are taken into account, and pollution reduction and collaborative improvement of economic benefits are achieved; and a feasible technical path is provided for ecological restoration of alkaline heavy metal polluted farmlands in arid and semi-arid regions.

The invention discloses a water quality purification system based on a heterogeneous catalytic material and an ecological floating bed. The water quality purification system comprises a floating bed device, a purification device, a fixing device and a water moving trolley, the floating bed device comprises a floating bed carrier and aquatic plants planted on the floating bed carrier; root systems of the aquatic plants extend into the water, and microorganisms are attached to the root systems; the purification device is arranged on the floating bed carrier, is in contact with water flow and comprises a plurality of purification assemblies distributed on the floating bed carrier at intervals, and each purification assembly comprises a purification bag suspended on the floating bed carrier and a heterogeneous catalytic material loaded in the purification bag; the fixing device is arranged on the floating bed carrier and fixes the floating bed carrier on the water surface of a target area; the water moving trolley is connected with the floating bed carrier and drives the floating bed carrier to the water surface of the target area; according to the water quality purification system disclosed by the invention, a material-plant-microorganism three-in-one synergistic purification framework is constructed, and the potential of an ecological floating bed in the aspects of sustainable pollution control and phosphorus resource recovery is remarkably enhanced.

The invention belongs to the technical field of environmental monitoring and pollution control, and particularly relates to a cross-medium pollution traceability system based on fusion of water, sediment and atmospheric settlement, and the system comprises the following components: a sampling module which is used for synchronously collecting a water sample, a sediment sample and an atmospheric settlement sample of a target water area in a preset time window; the detection module is connected to the sampling module and is used for determining the carbon stable isotope delta 13C of the water body sample; the data preprocessing module is connected to the detection module and is used for executing a quality control process, data standardization and abnormal value processing; and the Bayesian network calculation module is connected to the data preprocessing module and is used for establishing a hierarchical hybrid model taking the contribution rate of the pollution source as a hidden variable. Through three-medium synchronous sampling of water, sediment and atmospheric sedimentation and Bayesian posterior interval estimation, traceability errors caused by instantaneous discharge and background fluctuation are significantly inhibited, and conclusion robustness is improved.

The invention discloses a membrane pollution control method, and belongs to the field of membrane pollution control. Comprising the following steps: S1, online monitoring and data acquisition; S2, intelligent pollution identification and trend prediction: inputting a multi-dimensional process feature matrix into an intelligent self-learning neural network, and training and identifying pollution types; and predicting a future pollution trend according to an identification result to obtain a pollution development trend curve. S3, dynamic regeneration strategy generation: generating a dynamic regeneration strategy according to the pollution development trend curve; the dynamic regeneration strategy comprises backwashing time, backwashing flow, regeneration frequency and regenerant concentration adjustable parameters; and issuing the dynamic regeneration strategy to a control system for execution to realize real-time intervention and optimization control of membrane pollution. And S4, performing self-learning tuning and closed-loop feedback. And S5, long-term stability maintenance. According to the invention, the dual goals of flux recovery rate improvement and energy consumption reduction are realized while the pollution removal effect is ensured.

The invention belongs to the technical field of pollution control, and relates to a soil pollution treatment method and system utilizing microbial remediation, and the method comprises the following steps: obtaining target remediation functional microbial agent genome and to-be-remedied site native microbiome metagenome data, and constructing a biological information basic data set; processing the data, and constructing an interaction network model containing microbial inoculum and native species nodes based on metabolic complementarity and ecological niche overlapping degree simulation calculation; analyzing the network topology structure to screen a key native co-generation node set, and generating a growth promotion demand map; determining a targeted metabolism regulation factor with targeted selectivity based on atlas reverse matching, and generating a targeted signal instruction; executing the instruction and putting a microbial agent, activating a synergistic node in situ and coupling with the microbial agent to construct a degradation function network; the method solves the problem that the colonization efficiency of the exogenous functional microbial inoculum is not high due to lack of accurate regulation and control on the native microbial community.

A gripping gripper (30), particularly suitable for controlling contamination of a surface (112) by smear, comprises: a gripper body (22); a mechanical interface (18) for its connection to a modular effector (16) of a robotic arm (12); two jaws (24); a transmission mechanism (26) for connecting the jaws (24) to the gripper body (22) and converting commands from the mechanical interface (18) into movements of the jaws (24) between a mutually separating configuration and a mutually approaching configuration; two pads (32, 34) mounted on the jaws (24) by means of support mechanisms (38) configured to allow movement of the pads (32, 34) relative to the jaws (24) along trajectories parallel to each other, independently of the position of the jaws (24);and elastic return means (36) configured to stress each of the pads (32, 34) towards an extreme position on its trajectory, on the same side. Figure for the abbreviation: Figure 7;

The invention relates to the technical field of solid waste treatment and resource utilization, and particularly discloses a waste incineration fly ash harmless treatment method based on water washing-sulfide cooperative circulation. The method comprises the following steps: firstly, carrying out crushing, drying and sieving pretreatment on the fly ash; secondly, carrying out water washing desalination and detoxification on the fly ash by adopting deionized water under the conditions of optimized liquid-solid ratio, water washing temperature, time and stirring rate, and carrying out solid-liquid separation to obtain water-washed fly ash and water washing liquid; then adding a sodium sulfide solution with a certain concentration and proportion into the water washing liquid, and removing heavy metal ions through reaction, centrifugation and membrane filtration to obtain purified water washing liquid; and finally, the residual sulfur ions in the purified water washing liquid are partially recycled to the untreated water washing liquid, so that closed circulation of the sulfur ions and medicament saving are realized. By means of the method, the leaching concentration of Cl and heavy metal in the fly ash can be remarkably reduced, the fly ash can meet the hazardous waste landfill pollution control standard (GB18598-2019), and the treated washing liquid can reach the first-level emission limit value of the integrated wastewater emission standard (GB8978-1996). Compared with a traditional solidification / stabilization method, the method has the advantages of being high in desalination rate, high in heavy metal removal efficiency, low in energy consumption, low in operation cost, near-zero in emission and the like, and an efficient, economical and environment-friendly solution is provided for harmless treatment and resource utilization of the waste incineration fly ash.

The present application relates to the field of non-ferrous smelting solid waste resource utilization and pollution control technology, and specifically discloses a zinc oxide fume treatment control system and method. The system comprises a raw material slurry module, a first-stage leaching alkali control module, a second-stage leaching temperature control module and a calcification arsenic precipitation control module. In the first-stage leaching process, the efficient arsenic leaching balance point is dynamically captured according to the arsenic and zinc leaching rate variation curve with pH, and the leaching agent addition amount is accurately controlled; in the second-stage leaching, the heating temperature is real-time regulated according to the dissolved zinc rate; before the calcification arsenic precipitation, oxidation treatment is carried out, the oxidation-reduction potential is controlled based on the trivalent arsenic oxidation efficiency, and the lime milk addition amount is dynamically adjusted according to the arsenic concentration and zinc content in the precipitate during the arsenic precipitation process. The present application realizes efficient selective leaching and stable solidification of arsenic, effectively inhibits the loss of zinc, and has the advantages of high separation efficiency, high resource recovery rate and the like.

This invention provides a photovoltaic-powered microbial fuel cell constructed wetland system, relating to the field of water pollution control. The system consists of a photovoltaic power supply module, a pulse modulation unit, a mode switching unit, a microbial fuel cell constructed wetland body, an auxiliary anode module, and an electrically isolated stimulation electrode pair. Through photovoltaic power supply and low duty cycle intermittent constant current pulse modulation, it can maintain stable operation for more than 72 hours under no-light conditions. Relying on the time-sharing pulse output of the mode switching unit, electrochemical oxidation of recalcitrant organic matter is achieved through the auxiliary anode. The electroisolated electrode pair stimulates the metabolism of electrogenic bacteria with a non-contact alternating electric field, solving the problems of unstable power supply and difficulty in balancing oxidation efficiency and bacterial activity in off-grid scenarios, thus improving wastewater treatment efficiency and long-term operational stability of the system.

The invention provides an automatic water and dust removal method and system of an ultrasonic water removal camera, and relates to the technical field of water and dust removal. The ultrasonic water removal camera is constructed, image information collection is performed according to the ultrasonic water removal camera, image feature information and position comparison and division are performed, and image pollution analysis data are obtained; determining image pollution annotation information according to the image pollution analysis data; performing comprehensive state analysis and control analysis of pollution characteristic area and density according to the image pollution labeling information to obtain pollution control analysis data, and obtaining control feedback information according to the pollution control analysis data; processing feature effect analysis and judgment are conducted according to the control feedback information, an automatic water and dust removal instruction is triggered according to effect judgment information, continuous control operation is conducted, and pollution can be accurately recognized, cleaning parameters can be dynamically matched, and the cleaning effect can be optimized in a closed-loop mode.

The invention discloses a method for co-treating salt-containing organic wastewater through step-by-step electrodialysis-similar electro-Fenton, and relates to the field of water pollution control, wastewater is collected and filtered through a filter membrane, and a humification index HIX is scanned and calculated through a three-dimensional fluorescence spectrophotometer; regulating and controlling the concentration of Cl <-> in the wastewater by utilizing a front catalytic electrodialysis unit according to the measured HIX index, and synchronously regulating the pH value to obtain a product I; adding a catalyst precursor Fe < 3 + > into the product I, starting Fe < 2 + > / HClO electro-Fenton catalytic reaction, and performing deep desalination through a rear catalytic electrodialysis unit to finally realize synergistic catalytic removal of salt and organic matters. The method has the advantages that the HIX index is taken as a judgment basis, the Cl <-> removal is dynamically adjusted to efficiently and safely operate in the collaborative electro-Fenton process, the collaborative efficient removal of organic pollutants and salt can be realized, the goal of'Cl <-> removal after utilization 'can be achieved, and the method is an ideal method for treating the salt-containing organic wastewater.

The invention belongs to the technical field of pollution control of membrane method water treatment, and particularly relates to a composite conductive membrane, a preparation method thereof and application of the composite conductive membrane in membrane pollution control and N2O emission reduction. According to the composite conductive film, polyvinylidene fluoride serves as a matrix, nano titanium dioxide is introduced to improve the hydrophilicity and surface charge characteristics of the film, nano silver modified carbon cloth is adopted to construct a conductive layer, and the conductive layer and a separation layer are integrally combined through a phase inversion method. When the membrane operates under the condition of external low voltage, adsorption and deposition of pollutants on the surface of the membrane are inhibited through the surface charge conduction effect, meanwhile, the denitrification electron transfer process is promoted, and the synergistic effect of membrane pollution control and greenhouse gas emission reduction is achieved. The prepared composite conductive film is stable in structure, high in hydrophilicity and excellent in conductivity, is suitable for the field of municipal sewage, industrial wastewater and sludge treatment, and has remarkable energy-saving and environmental benefits.

The invention belongs to the technical field of biological detection, and particularly relates to an escherichia coli non-amplification type rapid detection method based on a deoxyribozyme probe. The method comprises the following steps: detecting Escherichia coli by adopting a fluorescent chip, mixing Escherichia coli lysate and RFD-EC recognition molecules for reaction, dripping into the fluorescent chip for reaction, and detecting the fluorescence intensity after the reaction; the fluorescent chip takes paper as a substrate and is coated with d-DNA, the nucleotide sequence of the d-DNA is shown as SEQ ID NO.3, and the 5'end of the d-DNA is marked with biotin. Fluorescent DNA molecules are enriched through a fluorescent chip micro-fluidic technology, and detection can be completed within 0.5-1 hour without enrichment culture in combination with multi-channel fluorescence detection. The detection lower limit of the method is as low as 100 CFU, and the method has the advantages of rapidness, sensitivity and low cost, is suitable for on-site rapid detection of Escherichia coli in clinical samples and environmental samples, and has important application value in the fields of pollution control and the like.

The invention discloses an intelligent prediction and migration regulation and control method for key indexes of a solid waste incineration system. According to the method, firstly, a hybrid expert model is constructed based on historical operation data of a reference incinerator, and soft physical constraints such as oxygen balance, total pollution load conservation and energy balance are introduced into model training in combination with a physical information neural network structure, so that the physical consistency of a prediction result is improved. On the basis, cross-plant migration is realized through a mode of field self-adaption, parameter fine tuning or plant vector embedding, so that the model can be quickly adapted under data distribution and operation characteristics of different incineration plants, and the high-precision prediction capability of multi-pollutant emission is kept. According to the method, a carbon-pollution collaborative comprehensive risk index is further constructed, and real-time quantitative evaluation of the environmental risk in the incineration process is achieved. According to the method, the key emission indexes of the solid waste incineration system can be stably predicted under the condition that the data size is limited, and an effective decision basis is provided for incineration working condition optimization and pollution control.

The invention discloses a green low-carbon treatment device for landfill leachate. The method belongs to the field of landfill leachate treatment. The problems of durability, biological accumulation and toxicity caused by the existing landfill leachate are solved. The device comprises a landfill leachate collecting tank, a three-dimensional electrolysis pretreatment tank, a sulfur circulation multi-stage anaerobic biological treatment tank, a sedimentation tank, an ozone catalysis device and a tail end biological enhancement filter tank which are connected in sequence. According to the invention, the removal of ammonia nitrogen, total phosphorus and refractory organic matters and the reduction of sludge in the biological treatment section are realized, and the effluent is ensured to reach the discharge standard in Pollution Control Standard for Household Refuse Landfill (GB 16889-2008). According to the invention, full quantification and low carbonization of landfill leachate treatment are realized, and the treatment cost is greatly reduced. According to the present invention, the environmental pollution problem can be easily solved, the water resource and the ecological environment can be protected, the technical progress and the industrial upgrading of the water treatment industry can be promoted, and the implementation of the green development and the sustainable development strategy can be promoted.

The invention discloses a method for detecting mouse bronchial Bordetella by using a qPCR (quantitative polymerase chain reaction) technology instead of a traditional sacrificial sentinel mouse, and a specific primer and probe combination comprises a forward primer sequence: 5 '-CGTTGTCGGCTTTCGTCTG-3', as shown in SEQ ID NO.1; the sequence of a reverse primer is 5 '-ACTATACGTCGGAAATCTGTTTG-3', and the sequence of the reverse primer is as shown in SEQ ID NO. 2; and a probe sequence: 5 '-FAM-CGGGCCGATAGTCAGGGCGTAG-BHQ1-3', and the probe sequence is as shown in SEQ ID NO. 3. The method disclosed by the invention has the beneficial effects that an analysis method suitable for detecting the bronchial Bordetella in the animal cage environment sample is established, the bronchial Bordetella in the environment sample can be rapidly and accurately detected and quantified by the method, and a technical support is provided for pathogen pollution control.

This invention relates to the field of flue gas pollution control technology in coal-fired power plants, and discloses a method for total pollutant emission reduction in an environmental protection island based on morphological transformation and residual compensation. The method includes: acquiring real-time operating data of a smart environmental protection island in a coal-fired power plant, generating a time-series feature vector, and setting inlet boundary conditions; constructing a pollutant morphological transformation mechanism model for each environmental protection subsystem, inputting relevant data and inlet boundary conditions, and calculating the theoretical baseline concentration of pollutants; using an LSTM as an error-compensated prediction model, after training with historical data, inputting the current operating condition time-series feature vector to obtain the concentration prediction residual value, obtaining the deviation between the historical training conditions and the current operating conditions, calculating the confidence factor, and generating a mixed pollutant prediction concentration; finally, using ammonia injection flow rate and other factors as optimization variables, setting constraints, and constructing an objective function with the lowest total cost to obtain the optimal control parameter set, thereby achieving optimized control and pollutant emission reduction of the environmental protection subsystem. This invention significantly improves the pollutant emission reduction effect.

The application provides a carbon source intelligent screening method and device for strengthening microbial degradation of emerging pollutants, and belongs to the technical field of pollution control. The method adopts a carbon source screening model constructed and trained based on coupling of a large language model and machine learning, intelligently screens based on gene characteristics of microorganisms in a microbial community and candidate carbon source characteristics to obtain an advantage specific carbon source of functional microorganisms, and can screen the advantage specific carbon source for promoting growth of the functional microorganisms, so that the functional microorganisms are directionally enriched in the microbial community, the in-situ emerging pollutant degradation capacity of the microbial community is improved, and the treatment effect of the emerging pollutants is further improved.

The application provides a wastewater treatment method and treatment equipment containing iron, arsenic and antimony, and relates to the field of water pollution control and treatment. The wastewater treatment method containing iron, arsenic and antimony comprises the following steps: S1, sequentially performing coarse filtration and ultrafiltration on the wastewater containing iron, arsenic and antimony; S2, performing reverse osmosis concentration treatment on the filtered wastewater again, and obtaining an enrichment liquid containing iron, arsenic and antimony; and S3, adding pyrite into the obtained iron-arsenic-antimony enrichment liquid, stirring and heating to obtain a reduction solution. The wastewater treatment method containing iron, arsenic and antimony can repair water bodies polluted by iron, arsenic and antimony, simultaneously realize harmless treatment and resource utilization of solid waste (distiller's grains, electrolytic manganese residue and the like), and achieve the purpose of treating pollution with waste; the adsorbent of the application adopts a one-step pyrolysis method, the process is simple, no chemical reagent needs to be added, the adsorbent is environmentally friendly, the adsorbent can be recycled, regenerated and reused, and the specific surface area and total pore volume of the adsorbent are large.

The invention relates to the technical field of data acquisition control, and particularly discloses a nanofiltration optimization method, system and equipment based on nanofiltration membrane pollution control, and the method comprises the steps of raw water pretreatment judgment, precipitation water scale inhibition effect judgment and filtered water recovery degree evaluation. The raw water pretreatment assembly performs initial pretreatment on raw water at a water inlet end, collects data, evaluates a state coincidence degree value of the raw water, compares the state coincidence degree value with a threshold value to determine whether secondary pretreatment is performed or not, obtains to-be-optimized water quality, ensures that the quality of the raw water entering the nanofiltration process better meets the requirement, improves nanofiltration efficiency, and then matches the dosage of a scale inhibitor according to the state coincidence degree value, so that the water quality is optimized. The adding assembly is used for adding, acquiring water quality data of precipitated water, verifying scale inhibition effect indexes and determining whether adding points are increased or not according to needs, the post-filtration analysis assembly is used for acquiring water quality data of water after tail end filtration, evaluating a recoverable degree index, verifying the recoverable degree index with a preset index, judging a recovery state and finally feeding back a nanofiltration membrane pollution control process.

The invention provides a steam stripping purified water separation and quality-divided recycling method and system.The method comprises the steps that a separation membrane with the organic pollutant separation efficiency not lower than 90% and the membrane flux not lower than 20 LMH is selected; separating the steam stripping purified water by adopting a separation membrane to obtain organic pollution control produced water and inorganic pollution control produced water; the TOC concentration in the organic pollution control produced water is not more than 10 mg / L, the pH value of the inorganic pollution control produced water is 6.5-8.5, the suspended matter and the total hardness are not more than 5 mg / L and 140 mg / L respectively, and the sulfide concentration and the ammonia nitrogen concentration are not more than 20 mg / L and 50 mg / L respectively; the organic pollution control produced water and the inorganic pollution control produced water are respectively recycled as production water of different oil refining devices. According to the invention, the collection, precise separation and quality-based recycling of the steam stripping purified water can be realized, the treatment and recycling ways of the steam stripping purified water can be increased, and the resource utilization efficiency of the steam stripping purified water can be improved to the maximum extent.

The invention relates to the field of supergravity sewage treatment, in particular to a supergravity explosive sewage treatment device and a sewage treatment method. Comprising a sewage treatment tank, a feeding storage cavity and a filler layer, a main body of the sewage treatment tank is of a cylindrical bin body structure, the bottom of the sewage treatment tank is a conical tank body, and a manual liquid outlet valve is arranged in the middle of the bottom of the conical tank body; according to the present invention, the secondary pollution caused by the discharge of the iron-containing sludge along with the water is completely eradicated, the reagent reaction sufficiency and the treatment efficiency are improved through the supergravity, and the device maintenance process is simplified. By considering the stability of solid-liquid separation, the high efficiency of reaction and the convenience of operation, an environment-friendly, high-efficiency and easy-to-maintain solution is provided for the treatment of refractory organic wastewater, so that the defects of the existing device in pollution control effect, reaction efficiency and practical suitability are overcome; and the comprehensive requirements of relevant treatment scenes on clean effluent, efficient reaction and convenient operation and maintenance are met.

This invention relates to the field of landfill leachate treatment and discloses a comprehensive treatment method for leachate from aging landfills, comprising two parts: denitrification and deep decarbonization. Denitrification employs an "OAO+UF" process, while deep decarbonization utilizes a "coagulation sedimentation + Fenton + built-in MBR + ozone + carbon filtration" process. The OAO unit of this invention achieves ammonia nitrogen and total nitrogen levels sufficient for municipal solid waste landfill pollution control standards, and eliminates the need for nitrification liquid return pumps or internal return pumps, resulting in lower energy consumption. The deep treatment section employs a two-stage AOP-based process, which can utilize a combination of Fenton and ozone processes, leading to higher COD compliance stability. This method offers advantages such as smaller footprint, stable operation, good treatment effect, low operating cost, and no concentrate production. The treated effluent consistently meets discharge standards, making it particularly suitable for treating leachate from closed or near-closed aging landfills.

The invention relates to the technical field of space environment effect ground tests, and provides a neutralized metal plate sputtering pollution control method and system for an atomic oxygen simulation test. The method comprises the following steps: determining a neutralized metal plate according to a relation curve of sputtering yield and atomic number of target material elements; the generated oxygen plasma is guided to the determined neutralization plate according to the optimized incident angle, the oxygen plasma is neutralized on the surface of the neutralization plate to form atomic oxygen, and the atomic oxygen is guided to the sample to be tested; the bias voltage applied to the neutralization plate is controlled, so that the energy of incident oxygen ions is lower than a sputtering threshold value of the neutralization plate while the energy of atomic oxygen reflected by the neutralization metal plate and the neutralization efficiency are ensured, and sputtering is effectively controlled; the temperature of the neutralized metal plate is controlled to prevent an increase in the sputtering level of the neutralized metal plate. According to the invention, the sputtering pollution of the neutralized metal plate in the test process is effectively controlled.