537 results about "Membrane reactor" patented technology

The invention relates to a rotary micro-liquid membrane reactor in-situ detection system for monitoring the nucleation behavior of a nano material. The reactor comprises a rotor and a stator, the base angle of the stator is 70-85 degrees, the rotating speed of the stator is 500-5000 rpm, the width of a slit is 10-500 microns, it is guaranteed that fluid does not backmix when passing through the slit, and a strong shear field is formed. A micro-negative pressure sampler is manufactured to capture nucleation particles in a high-speed shear field to enter a visual observation area, and a high-speed camera and a microscope objective lens are connected in situ, so that an instantaneous image of a nucleation process is obtained in a nano-micro scale, and a transient evolution behavior of a crystal nucleus is captured in situ. The construction of the rotary micro-liquid membrane reactor in-situ detection system solves the problems that the large-scale preparation quality is poor due to the fact that a traditional stirred tank reactor is poor in structure and micro-mixing effect and uncontrollable in material nucleation and growth, and the instantaneous phase transformation and nucleation process cannot be observed due to the fact that the reactor is closed. The obtained hydrotalcite nucleation result enriches the non-classical nucleation theory, and provides guidance for large-scale preparation of nano materials.

The invention discloses a device and a method for realizing low-carbon-nitrogen-ratio sewage autotrophic and heterotrophic coupled deep nitrogen and phosphorus removal based on a continuous flow membrane aeration bio-membrane reactor. A hollow fiber membrane is arranged in the continuous flow reactor, and an oxygen concentration gradient is formed through a bubble-free membrane aeration technology. In the biomembrane area, spatial partitions of functional bacteria such as nitrifying bacteria and anaerobic ammonium oxidation bacteria are established, and the two anoxic areas realize efficient nitrogen removal through short-cut denitrification coupling anaerobic ammonium oxidation (PD / A) and synchronous nitrification and denitrification. In the aspect of phosphorus removal, the system adopts an anaerobic-aerobic operation mode, phosphorus-accumulating bacteria release phosphorus anaerobically and absorb excessive phosphorus aerobically, and finally, phosphorus removal is realized through residual sludge discharge. The system integrates an internal carbon source extraction process, recovers a sludge carbon source and supplements an electron donor required by denitrification, and reduces the operation cost and carbon emission. The continuous flow MABR denitrification system enhances the denitrification efficiency of the PD / A system, is suitable for large-scale operation, and efficiently and stably realizes deep denitrification of a low-carbon-nitrogen-ratio urban sewage treatment plant.

The invention belongs to the technical field of organic synthesis of ethers, and particularly relates to a method for continuously synthesizing ethylene glycol dimethyl ether. The method comprises the following steps that ethylene glycol, sodium hydroxide and methane chloride serve as raw materials, multi-stage continuous reaction is carried out in liquid membrane reactors to synthesize ethylene glycol dimethyl ether, ethylene glycol, sodium hydroxide and methane chloride are introduced into the first-stage liquid membrane reactor, sodium hydroxide and methane chloride are introduced into the subsequent stages of liquid membrane reactors, and the first-stage liquid membrane reactor and the second-stage liquid membrane reactor are connected with the second-stage liquid membrane reactor. A byproduct sodium chloride is separated from a reaction product in the previous-stage liquid membrane reactor and then enters the next-stage liquid membrane reactor, a byproduct sodium chloride is separated from a reaction product in the last-stage liquid membrane reactor and then clear liquid is obtained, and ethylene glycol dimethyl ether is obtained through rectification treatment. The invention develops a novel process mode for continuously synthesizing an ethylene glycol dimethyl ether product, and provides a new idea for large-scale continuous production of ethylene glycol dimethyl ether.

The present application relates to a kind of full solid-state lithium ion membrane reactor with symmetrical structure and its application, the reactor is in situ construction on the both sides of solid-state lithium ion conductor film with Pt and / or Ni as catalyst, with single-walled carbon nanotube etc. Conductive material is used as current collector gas diffusion electrode, the reactor can work in nitrogen hydrogen mixture atmosphere, integration is high, scale is flexible.The present application changes the working mode of traditional reactor using liquid electrolyte, replaces inefficient nitrogen and proton mass transfer with efficient lithium ion mass transfer, couples lithium-mediated nitrogen reduction and hydrogen oxidation reaction to synthesize ammonia, and the maximum working current density is increased to 1000mA / cm 2 , and can work at 40mA / cm 2 Current density for a long time, with innovation and broad industrial application prospect.

The utility model discloses a membrane aeration bio-membrane reactor convenient to clean, and relates to the technical field of sewage treatment. Comprising a shell, a reaction chamber and a cleaning chamber are arranged in the shell, a dividing body and a horizontal reaction body are arranged between the reaction chamber and the cleaning chamber, the reaction body is in a hollow cylindrical shape, two rotating grooves matched with the reaction body are formed in the dividing body, and the bottom face of the reaction body is rotationally and hermetically connected with the inner wall of the shell. The reaction body is in sliding sealing connection with the segmentation body, the reaction body comprises a fixed block and membrane assemblies, the fixed block coincides with the projection of the segmentation body in the vertical direction, and the membrane assemblies are arranged on the two sides of the fixed block; a first liquid inlet is formed in the end, away from the cleaning chamber, of the reaction chamber, and a first liquid outlet is formed in the end, located in the hollow part in the reaction body, of the reaction chamber and communicates with the outside. According to the membrane component cleaning device, the influence on the working efficiency of the membrane component during cleaning is greatly reduced while the membrane component is conveniently cleaned by a worker, and the sewage treatment efficiency is ensured.

The utility model discloses an MOBR membrane bioreactor, which belongs to the technical field of MOBR membranes, and adopts the technical scheme that the MOBR membrane bioreactor comprises a shell, a shell cover is arranged at the top of the shell, an adjusting mechanism is arranged in the shell, and a membrane body is arranged in the shell; the adjusting mechanism comprises two limiting plates, an adjusting plate and a plurality of pull rods, the rear side of the adjusting plate makes contact with the rear side of the inner wall of the shell, the rear sides of the limiting plates are fixedly connected with the front side of the adjusting plate, the rear sides of the pull rods are fixedly connected with the front side of the adjusting plate, and the top of the adjusting plate is rotationally connected with a threaded column; the rear side of the top of the shell is fixedly connected with a fixing plate, and the problems that the sewage treatment effect of the MOBR membrane bioreactor is limited due to the fact that the area size of MOBR membranes arranged in most existing MOBR membrane bioreactors is inconvenient to adjust, and the use effect is affected due to the fact that stains on the surfaces of the MOBR membranes are inconvenient to clean are solved.

The invention provides a method for accurately regulating and controlling the water quality of cold water in a rotor of a phase modifier, which comprises the following steps: accurately regulating and controlling the water quality of the cold water in the rotor through a bipolar membrane reactor, a rectifier and a control system; the anion receiving liquid circularly circulates between the anion receiving chamber and the anion receiving box, the rotor internal cooling water circularly circulates between the rotor internal cooling water chamber and the raw water tank, and the phase modifier rotor internal cooling water can be introduced into the raw water tank through a bypass and returns to the rotor internal cooling water system from the raw water tank; the water quality of rotor internal cooling water introduced into the raw water tank is monitored in real time through an online pH meter and an online conductivity meter of an internal cooling water circulation pipeline, and parameters of applying direct current to an operation membrane stack are regulated and controlled through a rectifier. According to the invention, the controllability is stronger, the stability is better, the water quality of the cold water in the rotor can be accurately regulated and controlled and recycled, an ion exchanger is not required to be arranged for ion exchange desalination, the energy consumption is low, and the pollution is avoided.

The invention relates to the technical field of wastewater treatment, and discloses an algae membrane reactor, a decontamination optimization method, an online monitoring method and related equipment.The MAR reactor comprises an aeration system, an illumination system, a microalgae culture system, a membrane separation system, a water production tank, an algae production tank, a water pump and an intelligent control system; the method comprises the following steps: adding a pure microalgae stock solution through an adding pump, aerating and oxygenating through an air blower, stirring an algae-water mixed solution, enabling the amplified algae-water mixed solution to enter a membrane pool, pumping water by a backwashing pump, recycling the water or returning the water to a front-end advanced treatment unit, enabling a concentrated solution of algae to enter an algae box, centrifugally concentrating, storing and transporting as feed; microalgae species capable of efficiently removing specific pollutants in water are directionally cultivated according to production wastewater with different water quality characteristics, and intelligent operation of comprehensively assisting food industry wastewater treatment is achieved through construction of the self-control integrated algae membrane reactor and construction of the cloud management platform.

This invention relates to an in-situ detection system for a rotating microliquid film reactor (MFR) for monitoring the nucleation behavior of nanomaterials. The reactor comprises a rotor and a stator, with a stator base angle of 70-85°, a rotational speed of 500-5000 rpm, and a slit width of 10-500 μm to ensure that fluid passing through the slit does not undergo backmixing and to create a strong shear field. A micro-negative pressure sampler is fabricated to capture nucleating particles within the high-speed shear field and bring them into the visible observation area. A high-speed camera and microscope objective are connected in situ, thereby acquiring instantaneous images of the nucleation process at the nanoscale and capturing the transient evolution behavior of crystal nuclei. The construction of this rotating MFR in-situ detection system solves the problems of poor micro-mixing effects and uncontrollable nucleation and growth in traditional stirred tank reactors, leading to poor quality in large-scale preparations, and the inability to observe phase transitions and instantaneous nucleation processes in a closed reactor. The obtained hydrotalcite nucleation results enrich non-classical nucleation theories and provide guidance for the large-scale preparation of nanomaterials.

The invention discloses an efficient treatment process for salt-containing industrial wastewater, and relates to the technical field of wastewater treatment. Salt-containing industrial wastewater sequentially passes through an adjusting tank, a silicon and hardness removal unit, a biochemical unit, a secondary sedimentation tank, a fluorine removal unit, a filter unit, a catalytic ozonation unit, a moving bed bio-membrane reactor treatment unit, a powder carbon sedimentation unit and an ultrafiltration-reverse osmosis double-membrane unit to be treated, produced water is recycled, and concentrated water enters an evaporation and concentration unit; the silicon removal and hardness removal unit is used for treating the wastewater by adding a flocculating agent and a composite coagulant aid; the flocculating agent is a chitosan-based flocculating agent, and the addition amount of the flocculating agent is 10 to 20 mg / L; the composite coagulant aid is composed of a magnesium-aluminum hydrotalcite coagulant aid and alginic acid-silicate hybrid microgel according to the mass ratio of 2: (1-4), and the addition amount of the composite coagulant aid is 5-15 mg / L. The treatment effect of the salt-containing industrial wastewater is remarkably improved.

The embodiment of the utility model provides an algal-bacterial symbiotic membrane aeration bio-membrane reactor, the algal-bacterial symbiotic membrane aeration bio-membrane reactor comprises a container, a membrane assembly, a carbon dioxide supply device, an oxygen supply device and a light source, the membrane assembly is arranged in the container, the membrane assembly comprises a first membrane wire group and a second membrane wire group which are arranged at an interval, the carbon dioxide supply device is connected with the air inlet of the first membrane filament group to provide carbon dioxide for the first membrane filament group, the carbon dioxide is connected with the air inlet of the second membrane filament group to provide oxygen for the second membrane filament group, and the light source irradiates the first membrane filament group. The bacteria-algae symbiotic membrane aeration bio-membrane reactor disclosed by the embodiment of the utility model has a relatively strong sewage treatment effect.

The invention discloses a tubular dynamic membrane sulfur autotrophic denitrification device and method, the device comprises: a housing, which is composed of a middle cylindrical structure and two end hemispherical structures, the upper part of the cylindrical structure is provided with a purified water outlet, the lower part is provided with a backwashing port, and the top end of the hemispherical structure is respectively provided with a sewage inlet and a concentrated liquid outlet; the plurality of supporting bodies are arranged in parallel, each supporting body is composed of two layers of honeycomb-shaped PVC grids and a layer of polypropylene net, and the polypropylene net is clamped between the two layers of honeycomb-shaped PVC grids; the two splitter plates are fixed to the two ends of the supporting body respectively, and splitter holes corresponding to the supporting body are formed in the splitter plates; a large-aperture polypropylene net is used as a filtering support body, and powdered sulfur is used as a precoating agent, so that the problems of difficulty in powdered sulfur recovery and serious loss in the traditional sulfur autotrophic process are solved; meanwhile, sulfur powder with a certain particle size is used as a dynamic membrane reactor of a precoating agent, nitrate nitrogen can be efficiently removed, the effluent quality is improved, and meanwhile the dynamic membrane reactor has the advantages of being resistant to pollution and easy to clean.

The invention discloses a continuous preparation method of sodium tanshinone IIA sulfonate based on a single-tube thin-layer liquid membrane reactor. Comprising the following steps: (1) dissolving tanshinone IIA in an organic solvent as a feed liquid; (2) reacting gas-phase sulfur dioxide with air, and cooling to obtain sulfur trioxide mixed gas; (3) enabling the feed liquid and sulfur trioxide mixed gas to enter a single-tube thin-layer liquid membrane reactor in a parallel flow or reverse flow manner, and carrying out continuous sulfonation reaction to obtain reaction liquid; and (4) adding a sodium salt aqueous solution into the reaction solution to carry out salt forming reaction, centrifuging, drying and purifying to obtain the tanshinone IIA sodium sulfonate. According to the invention, a novel method is adopted to carry out sulfonation reaction on tanshinone IIA, and sulfur trioxide is basically completely consumed after the reaction is finished, so that the generation of waste acid is greatly reduced, and the method has important significance on environmental protection and cost reduction. The green, safe, efficient and continuous preparation of the high-purity tanshinone IIA sodium sulfonate is realized.

The invention discloses a membrane bioreactor based on distributed vibration, relates to the technical field of membrane bioreactors, and is characterized in that operation processes of a plurality of membrane reactor bodies form an integral structure based on an operation principle of the membrane reactor. In the whole process, the treatment capacity of the membrane reactor body in each independent position is directly fed back according to the liquid level change of sewage in the tank body, and the essence is that a water level analysis system is established, and specifically, the sewage liquid level parameters in the front-position section, the middle-position section and the cross-linking section are acquired in real time for analysis; the treatment capacity of the membrane reactor body is fed back based on the change speed of sewage, on this basis, the working assembly is additionally arranged in the whole structure, the essence is that the treatment capacity is utilized, each membrane reactor body adopts a circulating continuous replacement process, the sewage treatment process is not interrupted in the whole process, and the sewage treatment efficiency is improved. And the whole sewage treatment effect is not directly influenced.

It is provided a hydrophobic carbon molecular sieve membrane (CMSM) characterized by comprising pores with a pore size distribution in which at least 20 % of the pores have a pore size from 0.5 to 0.6 nm, measured by perm-porosimetry; and having a C / O ratio higher than 8 and a C / H ratio higher than 20; the membrane being obtainable by dip- coating a support with a dipping solution comprising a carbon precursor, a non-aqueous solvent, a curing agent, and a pore forming agent, wherein the pore forming agent is in an amount from 0.5 wt% to 8 wt% related to the weight of carbon precursor; followed by carbonization at a temperature higher than 700 ºC and lower than 1000 ºC; and wherein the carbon molecular sieve membrane has a higher hydrophobicity than a membrane prepared by the same process but without the addition of the pore forming agent. It is also provided a method for the preparation of the CMSM, and its use for the selective separation of propionic acid from a mixture with water and acetic acid and as a membrane reactor or part of a membrane reactor.

The present application discloses a method for monitoring dissolved oxygen in a biofilm, an optimized oxygen supply method, a system and a device, relating to the technical field of wastewater treatment. The monitoring method includes: obtaining image data of a biofilm of a membrane aerated biofilm reactor (MABR) sewage treatment device during sewage treatment; extracting features from the image data to obtain image feature parameters; inputting the image feature parameters into a biofilm dissolved oxygen prediction model to obtain an effective concentration of dissolved oxygen in the biofilm output by the biofilm dissolved oxygen prediction model; the biofilm dissolved oxygen prediction model is obtained by training based on a machine learning model. The present application provides a method for monitoring dissolved oxygen in a biofilm using image recognition by a machine learning model, which overcomes the defects of high cost, easy damage and great maintenance difficulty of microelectrodes, and realizes effective monitoring of dissolved oxygen in the biofilm at low cost.

The present application provides a wastewater treatment system and a wastewater treatment method, the system comprising: a membrane aerated biofilm reactor, a secondary sedimentation tank and an anaerobic ammonium oxidation reactor connected in sequence through pipelines; an inlet pipeline connected to the water inlet of the membrane aerated biofilm reactor, used to guide the wastewater to be treated into the membrane aerated biofilm reactor for treatment; an outlet pipeline connected to the water outlet of the anaerobic ammonium oxidation reactor, used to discharge the treated wastewater out of the system; a nitrification liquid reflux pipeline connected to the outlet pipeline and the membrane aerated biofilm reactor, used to reflux part of the outlet water of the outlet pipeline to the membrane aerated biofilm reactor. The membrane aerated biofilm reactor is used to couple the short-range nitrification reaction and the short-range denitrification reaction in the same reactor to achieve continuous and large-scale accumulation of nitrite, and can also remove a small amount of nitric nitrogen produced by the anaerobic ammonium oxidation reaction itself.

The invention provides an integrated sewage treatment method and system, a storage medium and electronic equipment. The method comprises the following steps: collecting sewage to be treated; carrying out pretreatment on the sewage to be treated; conveying the pretreated sewage to a bio-membrane reactor and starting bio-membrane treatment; conveying the sewage treated by the biological membrane to a multi-stage membrane assembly, and starting multi-stage membrane treatment; and carrying out post-treatment on the sewage subjected to the multi-stage membrane treatment. According to the integrated sewage treatment method disclosed by the invention, different types of pollutants are efficiently removed by integrating a biological membrane technology and a plurality of membrane filtration technologies, and deep treatment and recycling of sewage are realized.

The invention belongs to the technical field of devices for generating new substances by gas-liquid contact reaction, and discloses a falling film reactor for uniformly splitting hydroxyacetonitrile by using hydrocyanic acid, comprising a tower body, on which an air inlet, a liquid inlet, an upper tube plate, a lower tube plate, an air outlet and a liquid outlet are arranged in sequence from top to bottom, a falling film tube is fixed between the upper tube plate and the lower tube plate, and a falling film head fixed by a fixing member is arranged in the falling film tube; an even number of liquid inlets are arranged, and the liquid inlets are evenly distributed along the circumference of the tower body, and two opposite liquid inlets are connected by a guide tube; a plurality of guide protrusions located near the liquid inlet are arranged on the upper tube plate, and the number of the liquid inlets is consistent with the number of the guide protrusions. The invention solves the problem that after a mixed liquid is introduced into an existing falling film reactor, the mixed liquid will flow down from the falling film tube closer to the liquid inlet, resulting in a "dry tube" in other falling film tubes, affecting the contact reaction between hydrocyanic acid and the mixed liquid, and resulting in low production efficiency of hydroxyacetonitrile.

The invention belongs to the technical field of preparation of corn oligopeptide, and particularly relates to a preparation method of corn oligopeptide, which comprises the following steps: by taking corn protein powder as a raw material, carrying out ethanol-alkali composite pretreatment to obtain a corn protein solution; the corn protein liquid is pretreated through three-stage cooperative treatment of ultrasonic waves, microwaves and high-pressure homogenization; feeding the pretreated corn protein liquid into a three-area circulation type membrane reactor to carry out space-time coupling catalytic reaction; key parameters are monitored in real time through an online monitoring system, and technological conditions are dynamically regulated and controlled through an AI model; after the reaction is finished, performing membrane separation purification and drying to obtain a corn oligopeptide finished product; the utilization rate of the corn protein powder is improved, and high-value utilization of agricultural product processing byproducts is realized; the corn protein enzymolysis efficiency is improved; the bitterness value does not exceed 1; the corn oligopeptide prepared by the preparation method of the corn oligopeptide is applied to the preparation of blood pressure reducing functional food and the preparation of antioxidant cosmetics.

The invention belongs to the technical field of organic matter synthesis, and discloses an adiponitrile preparation device and method based on a falling film reactor. The stirring assembly and the falling film reactor are adopted, and the stirring assembly can achieve further uniform dispersion and rapid dehydration of liquid flowing out of the falling film tube. Meanwhile, heat supply is not needed in the stirring assembly, the temperature of the liquid can be further reduced, and side reactions after the materials enter the gas-liquid separation tank are reduced. In the reaction process, liquids such as adipic acid and adiponitrile are uniformly dispersed in a gas phase, the local concentration is prevented from being too high in the heating process, water is rapidly separated in the reaction process, and the product yield is increased.

The invention provides a reciprocating type membrane aeration bio-membrane reactor, which comprises a membrane box, the top of which is provided with an action wheel; the membrane assembly is arranged in the membrane box; the guide rail plate is used for being arranged on a membrane pool, an arc-shaped guide rail groove matched with the action wheel is formed in the guide rail plate in the length direction of the guide rail plate, and the arc-shaped guide rail groove is bent downwards; the buoyancy assembly is arranged at the bottom of the membrane box; the power assembly is used for being arranged on the membrane pool and connected with the membrane box, and the power assembly is used for driving the membrane box to reciprocate in the length direction of the arc-shaped guide rail groove. According to the reciprocating type membrane aeration bio-membrane reactor, the energy consumption can be reduced, and the mass transfer effect and the membrane area utilization rate can be improved.

The invention discloses a BF-MABR-based culture tail water treatment integrated system which comprises a pretreatment unit and an efficient treatment unit which are arranged in a culture pond, the bottom of the pretreatment unit is communicated with the bottom of the efficient treatment unit, and the pretreatment unit comprises a grating area and a brush area from front to back; wherein the grating area is composed of a plurality of groups of gratings, and the brush area is composed of a plurality of groups of ecological brushes fixed on a rope and is perpendicular to the water flow direction; the efficient treatment unit comprises a combination of a plurality of groups of membrane aeration biological membrane assemblies, biological filler, an air supply unit and aquatic plants, and the plurality of groups of membrane aeration biological membrane assemblies are arranged in parallel and are vertical to the water flow direction; by coupling the biological filler and the membrane aeration bio-membrane reactor, the amount of attached microorganisms is increased, the membrane pollution problem is relieved, the impact load resistance is enhanced, meanwhile, stable and efficient treatment of aquaculture tail water is achieved, the environmental pressure caused by excessive discharge of the aquaculture tail water in a region is relieved, and improvement of the water environment quality is facilitated.

The invention discloses a device for treating high-concentration ammonium salt wastewater by adopting a membrane technology, which belongs to the field of sewage treatment, is used for treating the high-concentration ammonium salt wastewater, and comprises the following steps: adjusting the alkali of the wastewater injected into a mother liquor tank, heating the alkali-adjusted wastewater in a mother liquor preheater, and heating the mother liquor preheater; the heated wastewater is fed into a liquid inlet of the columnar membrane reactor and forms turbulent flow through a liquid distribution pipe and a flow guide baffle in the columnar membrane reactor; a sulfuric acid solution in the acid storage tank is fed into an acid inlet of the columnar membrane reactor through a pump body, and the sulfuric acid solution and wastewater are located on the two sides of the hollow fiber membrane respectively and form a concentration gradient; and the sulfuric acid solution after generating ammonium sulfate crystals circularly enters the acid storage tank. According to the application, ammonia nitrogen selective adsorption in the presence of antibiotics can be successfully realized, ammonia nitrogen can be converted into high-added-value products, and cyclic utilization and appreciation of resources are realized.

Methods of hydrogen (H2) production is provided. The method includes: performing steam cracking of a feed to generate an olefin product and a tail gas including methane; reforming the methane to form a syngas including H2 and carbon monoxide (CO); providing the syngas into a reaction vessel to a region external to a tubular membrane in the reaction vessel; providing a steam into the reaction vessel to the region; performing water-gas shift reaction (WGS) of the syngas in the reaction vessel to form a product gas including the H2 and carbon dioxide (CO2); diffusing the H2 in the product gas through the tubular H2-selective membrane into its bore; discharging the H2 from the bore of the tubular H2-selective membrane; discharging a remainder of the product gas from the external region; and generating heat using the H2 as fuel, where the heat is used for the steam cracking.

The invention belongs to the technical field of environmental engineering, and discloses a predation-enhanced cascade fixed biological membrane sewage treatment process dual-environment-three-component coupling model. Metabolism of autotrophic microorganisms and heterotrophic microorganisms in activated sludge and a biological membrane and predation effects of protozoan and metazoan are comprehensively considered, on the basis of a mass balance principle, a substance conversion way in a biological predation enhanced sewage treatment reactor is analyzed, and dynamic changes of bacteria and pollutants are disassembled into diffusion, metabolism and predation processes; a material flow model framework is established, on the basis of an ASM1 activated sludge model and a biological membrane model, a primary animal predation model and a metazoan predation model are coupled, and a dual-environment-three-component coupling model is recreated. According to the method, the pollutant removal process and the dynamic change of the microbial community are dynamically simulated through multi-model coupling, and the method is suitable for optimizing the design and operation parameters of a sewage treatment reactor and particularly has remarkable application value in regulation and control of a cascade fixed bio-membrane reactor.

The invention discloses a continuous synthesis device and method for pseudo-boehmite, and belongs to the field of chemical material synthesis. The device comprises a raw material storage tank, a rotary liquid membrane reactor, a stirring tank, a tubular reactor, a vibration motor and a heating device. Three raw materials stored in different raw material storage tanks are conveyed into a liquid membrane reactor through a pump in a parallel flow mode, slurry generated after reaction flows into a stirring tank by means of gravity and then is conveyed into a tubular reactor which is placed in a heating device and preheated to a set temperature through a pump, and the tubular reactor and a vibration motor are fixed to the same vibration platform. The vibration motor is arranged outside the heating device, and vibration waves generated during operation of the vibration motor are conducted to the tubular reactor through the vibration platform. The slurry is aged in the tubular reactor and enters a product collecting tank after flowing out. The obtained pseudo-boehmite is uniform in particle size distribution, the particle size fluctuation range is small in the continuous synthesis period, energy consumption is reduced through continuous preparation, and efficiency is improved.

The invention discloses a method for realizing deep autotrophic nitrogen removal of sludge digestion liquid based on alternate intermittent aeration of a double-membrane aeration bio-membrane reactor (MABR). The process device comprises a sludge digestion liquid raw water tank, a single-stage double-MABR reactor, two MABR devices and a water outlet tank. According to the method, sludge digestion liquid enters the single-stage double-MABR reactor, the two MABR devices are alternately and intermittently aerated, the state of one aeration and one aeration stopping is always kept, and ammonia nitrogen in raw water is converted into nitrite through ammonia oxidizing bacteria enriched on the inner side of an MABR membrane. And simultaneously supplying to anaerobic ammonium oxidation bacteria enriched on the outer sides of the two MABR membranes through matrix diffusion for denitrification and generation of nitrate. Denitrifying bacteria enriched on the outer side of the MABR membrane utilize raw water organic matters to drive short-cut denitrification to synchronously supply nitrite to anaerobic ammonium oxidation bacteria so as to realize deep autotrophic nitrogen removal. According to the invention, a double-anaerobic ammonia oxidation reaction hot area is constructed through alternate intermittent aeration of double MABRs, and efficient deep autotrophic nitrogen removal of the sludge digestion liquid can be stably realized.

The invention provides a Joule thermally driven CO2 rapid desorption method based on a hollow fiber carbon film. The conductive hollow fiber carbon film is used as a reactor; the method comprises the following steps: pumping an absorption solution of saturated CO2 into a tube pass of a membrane reactor, simultaneously applying voltage to a component to generate Joule heat, vacuumizing a shell side of the component, separating desorbed carbon dioxide and barren liquor through a gas-liquid separation tank, and then collecting the desorbed carbon dioxide and barren liquor. The problems of high energy consumption and slow desorption of a traditional process are solved, the energy consumption-rate mutual exclusion dilemma in the amine solution regeneration process is overcome, the phenomena of amine degradation and equipment corrosion are relieved, and the dynamic response speed and comprehensive performance of a desorption system are improved.

The invention discloses a biological coupling treatment device and method for high-salt organic wastewater, and relates to the technical field of wastewater treatment.The biological coupling treatment device comprises a pretreatment unit, a biological treatment unit, a physical and chemical treatment unit, a desalination unit and a post-treatment unit, the bio-membrane reactor comprises a biological reaction tank and an MBR membrane assembly, activated sludge is arranged in the biological reaction tank, an aeration assembly and a limiting assembly are arranged at the bottom of the MBR membrane assembly, a flow pushing assembly is arranged on the bottom side in the biological reaction tank, and the MBR membrane assembly comprises a frame. According to the invention, the aeration structure is optimized, the permeability of the MBR membrane is guaranteed, the cleaning frequency is reduced, the service life of the membrane is prolonged, in addition, the aeration structure is optimized, so that bubbles are uniformly distributed, and the oxygen content of each region is kept uniform.