55 results about "Thermal hydrolysis" patented technology

The application discloses a sea urchin-shaped antibacterial piezoelectric copper-zinc oxide and a preparation method and application thereof, and belongs to the field of biological medical materials. The preparation of the copper-zinc oxide comprises the following steps: (1) weighing Cu 2+ and Zn 2+ containing compound raw materials, dissolving the raw materials in deionized water, and preparing a mixed solution after dispersion; (2) adding the mixed solution obtained in the step (1) into deionized water containing DMSO, stirring and uniformly mixing, and preparing a solution containing Cu 2+ and Zn 2+ ; (3) adding an alkali source into the solution obtained in the step (2), heating and reacting, centrifugally collecting a precipitate, and obtaining the copper-zinc oxide after washing. The copper-zinc particles are subjected to thermal hydrolysis under the action of the organic solvent DMSO under an alkaline condition, and the copper-zinc oxide with a sea urchin-shaped structure is generated; and the oxide exhibits excellent piezoelectric antibacterial performance under stirring at room temperature.

The invention belongs to the technical field of sludge treatment and recycling, and relates to a method for promoting anaerobic methane production by sludge through tubular pore structure biochar. Comprising the following steps: screening, washing, segmenting and drying a biomass material with a natural grade pore network, and then pyrolyzing and screening to obtain tubular pore structure biochar; carrying out sedimentation, sieving, dilution and pyrohydrolysis on the residual sludge to obtain pretreated sludge; mixing the pretreated sludge with the inoculated sludge to obtain mixed sludge; and adding the tubular pore structure biochar and the mixed sludge into an anaerobic reactor, aerating nitrogen in the anaerobic reactor, sealing the anaerobic reactor in a water bath constant-temperature oscillator, and carrying out methane production until no methane is generated in the anaerobic reactor. According to the method, the anaerobic methanogenesis efficiency of the residual sludge is remarkably improved by utilizing the tubular pore structure biochar, and the improvement of the anaerobic methanogenesis efficiency of the sludge under the mediation of the exogenous conductive material is realized.

The invention discloses a kitchen waste anaerobic digestion treatment and resource utilization system which comprises a pretreatment subsystem, an anaerobic digestion subsystem, a biogas purification and utilization subsystem and a biogas slurry and biogas residue resource subsystem which are sequentially connected along the material flow direction, the pretreatment subsystem is used for carrying out impurity separation, pulping and oil extraction on incoming kitchen waste; and the anaerobic digestion subsystem is used for carrying out hydrolytic acidification and methanogenesis reaction on the pretreated organic slurry to generate biogas. According to the invention, through integration of high-efficiency pyrohydrolysis pretreatment, two-phase anaerobic digestion enhancement and multi-element resource deep treatment, the spanning of kitchen waste treatment from reduction to high value is realized, and the beneficial technical effects of the system are reflected in that: through pyrohydrolysis and multi-stage separation pretreatment, the organic matter degradation efficiency and the grease recovery rate are remarkably improved; and the acidification risk of the system is effectively relieved by combining two-phase anaerobic digestion with a trace element strengthening strategy, and the biogas yield and the operation stability are greatly improved.

The invention discloses a method for improving methane production by anaerobic digestion through hydrothermal electrochemistry, which comprises the following steps: dispersing livestock and poultry manure by using a water solvent to obtain a raw material solution, carrying out anaerobic digestion treatment on the raw material solution under external voltage through an electrochemical anaerobic digestion system, and dehydrating the material solution subjected to anaerobic digestion to obtain a biogas residue solution with adjusted solid content, carrying out a heating hydrolysis reaction under a low-oxygen or anaerobic condition; after the hydrolysis reaction, the feed liquid is directly introduced into a flash tank, so that the pressure of the feed liquid is suddenly reduced, the temperature is reduced along with the room temperature environment, macromolecular substances are cracked into micromolecular substances under the flash evaporation effect, and then centrifugal treatment is performed to obtain biogas residue pyrohydrolysate and livestock and poultry manure biogas residues. The method provided by the invention not only can produce methane at high yield, but also enhances the degradation effect of organic matters in the raw material solution.

The invention provides a method for preparing a glycolic acid solution by using polyglycolic acid industrial waste, which comprises the following steps: mixing crushed polyglycolic acid waste with water, carrying out hydrothermal hydrolysis to obtain a glycolic acid crude water solution, and then carrying out decoloration and organic impurity adsorption by using microporous activated carbon to obtain the glycolic acid solution. And then carrying out deep purification through cation exchange resin and anion exchange resin in sequence to remove metal ions and inorganic anion impurities so as to obtain the required glycollic acid aqueous solution product. The content of metal ions in the prepared glycollic acid aqueous solution product is less than or equal to 1 ppm, the content of anions is less than or equal to 10 ppm, and the glycollic acid aqueous solution product is not turbid or precipitated after being stored for 30 days at normal temperature, shows good long-term storage stability and can be directly used as a raw material of an industrial cleaning agent; and the technological process is simple, industrial amplification is easy, and good application prospects are achieved.

The present application relates to a kind of hydrolysis-extraction coupling processing aging oil system and method, system includes preheating tank, hydrothermal reactor, sequentially connected flash tank, heat exchanger and oil-water separator and three-phase centrifuge.Aging oil mixture material is preheated after entering preheating tank and obtains preheated material;Preheated material enters hydrothermal reactor and obtains hydrothermal reaction oil slurry;Hydrothermal reaction oil slurry enters flash tank, and flash separation is obtained by flash oil gas and flash remaining oil slurry;Flash oil gas is obtained by heat exchanger, oil-water separator, circulating extraction agent, recovery extraction agent, sewage and incondensable gas, circulating extraction agent is transported to preheating tank;Flash remaining oil slurry is transported to three-phase centrifuge and centrifuged.By hydrolysis-flash effect, the flowability of aging oil system is improved, the extraction effect is strengthened, and the addition proportion of extraction agent is reduced;And all processes are completed in closed system, reduce the volatilization of oil gas and extraction agent, reduce the pollution generated by oil gas dispersion in disposal process.

This hot water supply system reduces the startup loss of the heat source unit and allows for hot water storage using surplus electricity from solar power generation. [Solution] The hot water storage system (1) includes a hot water storage tank (21), a heat source unit (10) that heats the hot water in the hot water storage tank, a pump (22) that circulates the hot water between the hot water storage tank and the heat source unit, and a control means (29) that controls the hot water storage operation to drive the heat source unit and the pump to store hot water. The control means starts the hot water storage operation when the start condition of the heat source unit is met, and stops the hot water storage operation when the stop condition of the heat source unit is met. The start condition is met when the amount of heat in the hot water storage tank is insufficient to meet the first amount of heat obtained by summing the predicted heat amounts for a predetermined first period while the heat source unit is stopped, and the stop condition is met when the amount of heat in the hot water storage tank is equal to or greater than the second amount of heat obtained by summing the predicted heat amounts for a second period which is longer than the first period.

The present application relates to the technical field of sludge treatment, and discloses a sludge degradation treatment system based on a modular reaction bin, which comprises a pretreatment module, a core treatment platform and a resource treatment module connected with a control system through a pipeline, the core treatment platform takes an anaerobic digestion module as a main treatment line and is provided with a hot hydrolysis module and an aerobic fermentation module connected in parallel or in series as auxiliary branch lines, the resource treatment module comprises the aerobic fermentation module and a thermochemical treatment module, and the system dynamically allocates paths according to sludge characteristics and treatment targets through intelligent scheduling and a routing unit: the outlet of the pretreatment module is selectively connected with the inlet of the hot hydrolysis module or the anaerobic digestion module; the outlet of the anaerobic digestion module is connected with a biogas energy recovery unit and a sludge dewatering unit after digestion; and the outlet of the dewatering unit is selectively connected with the inlet of the aerobic fermentation module or the thermochemical treatment module, so that directional degradation and resource treatment of sludge are realized.

The invention discloses a method for directly utilizing land by preparing a green organic fertilizer from kitchen waste anaerobic fermentation biogas residues through pyrohydrolysis and precise oxidation. A pyrohydrolysis reactor is adopted as a container; high-pressure steam and high-pressure air are used as stirring power to carry out pyrohydrolysis-precise oxidation cooperative treatment on the kitchen waste anaerobic fermentation biogas residues, so that heating and oxidation are synchronously carried out, after the reaction is finished, the biogas residues subjected to heat treatment are dried, and the obtained solid phase is the green organic fertilizer. According to the method, in a high-temperature and high-pressure reaction system, free oxygen widely existing in air serves as an oxidizing agent to excite free radical chain reaction, synergistic degradation of organic matter and oxidative decomposition of toxic and harmful substances are achieved, and finally the organic fertilizer meeting the green standard is generated. According to the method, in-situ harmlessness of the biogas residues is realized by adopting a pyrohydrolysis and precise oxidation synergistic technology, the content of toxic and harmful substances is reduced from the source, and soil pollution caused by application of biogas residue fertilizer is avoided.

The application provides a method and a treatment device for realizing consumption reduction and emission reduction by optimizing carbon source circulation in a sewage plant, and the treatment method comprises the following steps: mixing residual sludge with biological surfactant, stirring and treating, and then performing low-temperature thermal hydrolysis treatment, and then performing stripping and separation of extracellular polymers through hydraulic cyclone; wherein the residual sludge is a mixture of biochemical sludge and physical-chemical sludge, and the temperature of the low-temperature thermal hydrolysis is not more than 90 DEG C; performing short-path fermentation on the treated sludge to obtain carbon source rich in volatile fatty acids; recycling sludge conversion carbon source; and putting the recycled carbon source into a biochemical denitrification treatment device to supplement biological denitrification carbon source. By adopting the technical scheme of the application, the extracellular polymers of the residual sludge can be converted into volatile fatty acids as the main fermentation substrate, and the volatile fatty acids can be used for in-situ denitrification, so that the carbon source in the sewage plant can be recycled, the sludge amount can be reduced, the cost can be saved, and the carbon emission can be reduced.

This application provides a chemical thermal washing method and system for oily sludge. The method includes: crushing, screening, and washing the oily sludge to obtain a first solid phase product and a first liquid phase product; performing a first centrifugal separation on the first liquid phase product to obtain a second solid phase product and a second liquid phase product; preheating and liquefying the second solid phase product to obtain a first mixed product; mixing the first mixed product with a catalytic conditioning agent and performing a hot water hydrolysis reaction to obtain a second mixed product; flash evaporating the second mixed product to obtain a third mixed product; mixing the second liquid phase product and the third mixed product with a demulsifier and performing a demulsification treatment to obtain a fourth mixed product; and performing multi-stage separation on the fourth mixed product to obtain a first aqueous phase product, a first oil phase product, and a third solid phase product. This method solves the technical problem of low processing efficiency in existing chemical thermal washing methods.

The application discloses a kind of based on thermal hydrolysis-pyrolysis coupling process organic solid waste resource disposal method, the present application is to solve the bottleneck problem of low sludge organic matter conversion efficiency and poor quality of resource product under the stress of melanin-like by-product, propose pyrolysis treatment to thermal hydrolysis sludge solid phase product, to improve pyrolysis reaction activity, improve the pore structure of biochar, inhibit the strategy of melanin-like.By low temperature, high temperature treatment after thermal hydrolysis sludge derived carbon has larger hysteresis ring, and it is mesoporous structure, total surface area, total pore volume significantly increases, so as to promote the development process of biochar pore structure volatile matter pyrolysis reaction activity.In addition, biochar derived dissolved organic matter can be degraded component is split, forms aromatic component, increases the aromaticity of biochar.At the same time, humic acid component in melanin-like is effectively fixed by biochar, and finally eliminates the inhibitory effect of melanin-like.The present application provides an effective strategy for high-quality product recovery in organic solid waste thermal hydrolysis-pyrolysis practical engineering.

Disclosed is a method for producing biocrude and bioactive substances from microalgae biomass. The method has the steps of mixing and stirring dry microalgae biomass with water and an acid catalyst, heating the mixture at high pressure at a temperature and time based on each individual species or processing the biomass mixture in a colloidal mill with solvent, separating lysed algae cells into non-polar extracts from water-soluble extracts via vacuum filtration, washing the lysed algae cells and non-polar extracts with organic solvents, separating the organic solvent mixture, which has ethanol and long-chain fatty acids, from the remaining biochar via vacuum filtration, and separating the ethanol from the fatty acids via distillation or rotary evaporator to extract bio-oil.

An incineration system is adapted for burning an incineration matter, and for generating a regenerative matter by hydrolyzing a hydrolysis matter. The incineration system includes an incineration device, a boiler device, a power generating device, and a thermal hydrolysis device. The incineration device includes an incinerator that is adapted for receiving the incineration matter and for burning the incineration matter to thereby generate heated air. The boiler device receives the heated air from the incinerator and generates steam via the heated air. The power generating device receives the steam from the boiler device to generate electric power. The thermal hydrolysis device includes a tank that is adapted for receiving the hydrolysis matter and the steam. The thermal hydrolysis device is adapted for hydrolyzing the hydrolysis matter via the steam, for generating the regenerative matter by hydrolyzing the hydrolysis matter, and for outputting the regenerative matter.

The invention discloses a continuous thermal hydrolysis and flash evaporation integrated device and a thermal hydrolysis and flash evaporation method, and belongs to the technical field of environmental protection. The device comprises a shell, and the interior of the shell is divided into an upper pyrohydrolysis reaction area and a lower flash evaporation area through a pyrohydrolysis and flash evaporation partition plate; the pyrohydrolysis reaction area is connected with a feeding pipeline, a steam pipeline, a non-condensable gas pipeline and a pyrohydrolysis reaction area differential pressure type liquid level meter; the flash evaporation area is connected with a flash evaporation dead steam pipeline, a guide plate, a discharge pipe, a flash evaporation area differential pressure type liquid level meter and a flash evaporation area temperature transmitter; and at least one material passing controller is arranged on the thermal hydrolysis and flash evaporation partition plate. According to the continuous integrated device, the thermal hydrolysis function and the flash evaporation function are integrated into a single reactor, stable and continuous operation is achieved through the structural design of the frame type stirrer, the special steam spraying pipe and the like, and the stirring and heating efficiency, the equipment structural strength, the sealing and heat insulation performance and the production efficiency are improved.

Systems for and methods of treating a fluid containing siloxanes, silanols, silanes, and / or other silicon compounds. A hot box receives an initial flow of the fluid, and reacts the initial flow with water at a temperature and pressure suitable for hydrolysis to generate a first treated flow, in which at least a portion of the siloxane is hydrolyzed to produce silicon dioxide and methane. A catalytic reactor receives the first treated flow, and converts at least a portion of volatile organic compounds (VOCs) and dioxygen to carbon dioxide and water to generate a second treated flow. A membrane separator receives the second treated flow, and removes at least a portion of the carbon dioxide and water to generate a clean gas flow.

The present application relates to a method for promoting sludge thermal hydrolysis by exciting in-situ quinone compound catalytic oxidation, and belongs to the field of organic waste treatment. In the method, humic acid and other quinone compounds generated in the process of sludge high-temperature thermal hydrolysis are used as in-situ organic catalysts, and the catalytic oxidation function of the quinone compounds is excited to improve the effect of sludge thermal hydrolysis. On the premise of not affecting the effect of sludge hydrolysis, the hydrolysis temperature is reduced, the Maillard product is effectively reduced, and the quality of carbon source released by sludge hydrolysis is improved. Under the same sludge thermal hydrolysis conditions, the soluble COD concentration can be increased from 17.1 g / L to 24.3 g / L by exciting the catalytic oxidation of in-situ quinone compounds, and the increase rate is 42.1%. The method does not need to add additional catalyst, and the exciting agent is cheap metal such as ferrous ion, so the cost is low and the efficiency is high. It is a new method and new idea for improving the effect of sludge thermal hydrolysis and improving the biodegradability of hydrolyzed sludge carbon source, and it integrates sludge reduction and resource utilization, which has high application value.

A method for efficient hydrogen production from sludge by means of catalytic cracking and reforming promoted by sludge thermal hydrolysis by-product melanoidins, relating to the field of energy recovery from organic solid waste. In view of the problems in high-temperature thermal hydrolysis-pyrolysis processes that melanoidins inhibit sludge decomposition, the composition of pyrolysis gas is complex, and the directional regeneration of H2 is difficult, in the present invention, by-product melanoidins in a high-temperature thermal hydrolysis procedure are extracted to enhance the efficiency of gas production from cracking of thermally hydrolyzed sludge. The sludge is subjected to low-temperature thermal hydrolysis treatment, so that the surface is loose and the degree of organic matter devolatilization is enhanced, thereby promoting gas production from solid-phase cracking of thermally hydrolyzed sludge. Furthermore, melanoidins demonstrate superior reaction catalytic activity due to carboxyl groups and nitrogen-containing structures and achieve the best effect at 2.5 mg / g DW. The total gas production is increased by 6.54%. The melanoidins induce, in mixed gas from the cracking of thermally hydrolyzed sludge, a methane catalytic cracking reaction CH 4®C+2H 2 and a catalytic reforming reaction CH 4+CO 2®2CO+2H 2. The hydrogen yield is increased by at most 35.92%. The present invention effectively solves the engineering bottleneck problems of negative impact of melanoidins and low green energy recovery in the field of thermal hydrolysis-pyrolysis.

The invention relates to a method for improving anaerobic digestion efficiency of pyrohydrolysis sludge and reducing generation of H2S, which specifically comprises the following steps: obtaining anaerobic digestion sludge and pyrohydrolysis sludge of a sewage treatment plant, taking the anaerobic digestion sludge as inoculation sludge, and fully mixing the inoculation sludge and the pyrohydrolysis sludge to obtain a sludge mixture; adding the sludge mixture into an anaerobic sequencing batch reactor, and fully and uniformly stirring; the method comprises the following steps: adding iron-rich coal into a reactor, emptying the reactor through nitrogen, sealing, connecting a gas collecting device, operating the reactor for 30 days in a thermostatic water bath at 39-42 DEG C at the rotating speed of 110-130 rpm, and dropping the H2S content in the system to 0 ppm after the operation is stopped. According to the method, the anaerobic digestion gas production efficiency of the sludge can be remarkably improved, the activity of methanogenic archaea is fully excited, meanwhile, the removal effect of organic pollutants in the sludge can be greatly enhanced, the content of hydrogen sulfide in the biogas is efficiently reduced, and the quality of the biogas is effectively improved.

The application discloses a kind of sludge hot hydrolysate's deep dewatering method, first take sludge hot hydrolysate, determine its moisture content, then according to 1-4% of sludge dry weight Iron salt type conditioning agent is added, after stirring, heating treatment is carried out;Then the sludge after heating treatment is transported to filter pressing dewatering equipment and is deeply dewatered, and forms mud cake.The application aims at the dewatering problem of the hot hydrolysate of residual sludge in sewage plant after hot hydrolysis conditioning, by adding iron salt type conditioning agent to the hot hydrolysate for reconditioning, and keeping at 60 DEG C and above for reaction, and then transported to filter pressing dewatering equipment for deep dewatering, which can significantly improve the dewatering performance of sludge, compared with the direct dewatering method of ordinary sludge hot hydrolysate, the application can significantly improve the efficiency and effect of sludge deep dewatering, can be stably operated and reduce the comprehensive treatment cost of sludge.

The invention relates to a top-mounted water heater with temperature adjusted outside the top, and aims to solve the problems that a traditional water heater is limited in mounting position, large in potential safety hazard, difficult to clean and maintain and affects indoor space utilization and attractiveness. The water heater body is designed to be installed at the top of a bathroom or a toilet, floor and wall space occupation is reduced, an external temperature regulator is arranged, user operation is facilitated, and the water splashing risk is reduced. The water heater further has intelligent functions such as remote control and intelligent temperature adjustment, and the user experience is improved. And meanwhile, the safety protection device is adopted to ensure safe and stable operation of the equipment in a humid environment, the equipment is coordinated with indoor decoration, and the overall attractiveness is improved. The water heater has the advantages of being high in safety, high in space utilization rate, convenient to maintain, high in attractiveness, intelligent, convenient to use and the like, and a safer, more comfortable and more convenient hot water solution is provided for family users.

The present application provides a chemical hot washing method and apparatus for oily sludge. The method comprises: crushing, screening, and cleaning oily sludge to obtain a first solid phase product and a first liquid phase product; performing first centrifugal separation treatment on the first liquid phase product to obtain a second solid phase product and a second liquid phase product; preheating and liquefying the second solid phase product to obtain a first mixed product; mixing the first mixed product and a catalytic conditioning agent, to perform a thermal hydrolysis reaction to obtain a second mixed product; performing flash evaporation treatment on the second mixed product, to obtain a third mixed product; mixing the second liquid phase product, the third mixed product, and a demulsifier, and performing demulsification treatment to obtain a fourth mixed product; performing multi-stage separation treatment on the fourth mixed product to obtain a first aqueous phase product, a first oil phase product, and a third solid phase product. Said method solves the technical problem of low treatment efficiency of chemical hot washing methods in the existing technology.

The utility model belongs to the field of sludge treatment, and particularly relates to a front pretreatment device for reducing the water content of sludge, which comprises a pyrohydrolysis reaction kettle, the top of the pyrohydrolysis reaction kettle is communicated and connected with a connecting valve, and the top of the connecting valve is communicated and connected with a preheating assembly. The middle of the bottom of the pyrohydrolysis reaction kettle is communicated with a crushing assembly; through the structural arrangement of the preheating assembly, when the pretreatment device is used, a solar heat collector continuously heats a heating medium in a water tank through solar energy, sludge is introduced into a preheating cylinder through an input pipe, and then a water pump is started; a heating medium heated in the solar heat collector is pumped into the cavity of the preheating cylinder through the hose A and then pumped into the cavity of the preheating cylinder through the hose B to preheat sludge, and the heating medium subjected to heat exchange in the cavity is squeezed back into the water tank of the solar heat collector through the return pipe, so that the pretreatment device can utilize solar energy to partially heat in the heating process; and the energy consumption of the device is reduced.

The utility model provides a deodorization device for sludge pyrohydrolysis treatment, which relates to the field of sludge pyrohydrolysis and comprises a pyrohydrolysis reaction kettle, the exhaust position of the pyrohydrolysis reaction kettle is fixedly connected with one end of an exhaust pipe, and the other end of the exhaust pipe is provided with a spraying deodorization mechanism. The spraying deodorization mechanism comprises a deodorization barrel, a water inlet pipe, a water pump, a water outlet pipe, a spiral spray head, a porous plate type equalization device and a porous plate type equalization device, an activated carbon deodorization mechanism is arranged at the top of the spraying deodorization mechanism, and a quick release mechanism is arranged on one side of the activated carbon deodorization mechanism; and the quick release mechanism comprises an activated carbon stabilizing pipe, an activated carbon filler, a handle, a spring groove, a moving opening, a sealing ring, a second sealing strip, a connecting spring, a moving plate, a clamping block and a moving block. According to the utility model, the deodorization effect on the odor is improved and the influence of the odor on the working environment is reduced by adopting the modes of spraying deodorization and activated carbon deodorization.

The invention relates to a method for obtaining peat-substitute fibres from fibre-containing biomass, in particular annual plants, wherein the biomass is subjected to hydrothermal digestion in a thermal hydrolysis process, preferably via steam explosion, and then a first separation of the digested biomass into a first fibre fraction and a liquid phase, which is enriched with dissolved organic and inorganic substances and finely suspended solids. According to the invention, before the hydrothermal digestion, the biomass is comminuted, then process water is added to mash the comminuted biomass, and after the hydrothermal digestion, the digested biomass is mashed again, preferably in a further step, and then the first separation is carried out.

This invention discloses an enhanced thermal hydrolysis method for excess sludge based on extracellular polymer dissociation, belonging to the field of excess sludge treatment and disposal technology. The method first prepares an extracellular polymer dissociation solution composed of sodium citrate and sodium dodecyl sulfate, mixes it with dewatered excess sludge, and performs dissociation treatment. After solid-liquid separation, a solid sludge free of extracellular polymers is obtained. This sludge is then replenished with water and mixed thoroughly before undergoing low-temperature thermal hydrolysis at 100-150℃. This achieves efficient sludge reduction and yields a high-concentration organic matter pyrolysis solution, while mitigating the deterioration of dewaterability after low-temperature thermal hydrolysis. This invention significantly improves the efficiency of low-temperature thermal hydrolysis by dissociating extracellular polymers to break their protection of microbial cells, reducing energy consumption and operating costs. The dissociation agents used are inexpensive and non-toxic, the process is simple, it is compatible with existing equipment, there is no secondary pollution, and it also enables the resource utilization of extracellular polymers and pyrolysis solution, possessing significant practical application and promotion value.

The application relates to an activated sludge-based antibacterial peptide efficient extraction and purification integrated equipment and belongs to the technical field of activated sludge resource recovery. The application provides an activated sludge-based antibacterial peptide efficient extraction and purification integrated equipment, which comprises a pretreatment and impurity removal unit, a low-temperature alkali hydrolysis unit, a temperature control enzyme hydrolysis unit, a primary purification unit, a secondary fractional purification unit, an antibacterial circle online screening unit and a magnetic molecular imprinting nanometer material enrichment and elution unit which are sequentially connected. The application provides an activated sludge-based antibacterial peptide efficient extraction and purification integrated equipment which is stable in process, safe in preservation, suitable for nanometer Fe3O4@MIPs, and capable of continuous operation.

The invention belongs to the field of sewage treatment, and discloses a gas-water two-phase carbon capture sewage recycling system and process. In the system, one path of a supernatant outlet of a first separation tank is connected with a microalgae biological tank; an algae-water mixed liquid outlet of the microalgae biological tank is connected with the second separation tank; one path of a sediment outlet of the first separation tank is connected with the anaerobic tank; one path of a precipitation outlet of the second separation tank is connected with the microalgae biological tank; the other path of the precipitation outlet of the first separation tank and the other path of the precipitation outlet of the second separation tank are connected with a pyrohydrolysis anaerobic digestion fermentation device; a CO2-containing biogas outlet of the pyrohydrolysis anaerobic digestion fermentation device is connected with a biogas inlet of the combined heat and power generation device; and a CO2-containing tail gas discharge port of the combined heat and power generation device is connected with a CO2 feeding port of the microalgae biological tank. The invention develops an efficient, green and low-carbon sewage regeneration and resource application technology.

The invention provides a production process method of low-salt sludge nutrient soil, and relates to the technical field of sludge treatment.The production process method comprises the steps that domestic sludge is preliminarily dewatered to a target water content range, and preliminarily dewatered sludge is obtained; carrying out thermal hydrolysis-anaerobic digestion treatment on a part of the preliminarily dewatered sludge to obtain anaerobic digested sludge; the other part of the preliminarily dewatered sludge is subjected to drying-pyrolysis carbonization treatment, and sludge carbon is obtained; sludge carbon is added into the anaerobic digestion sludge for conditioning, and conditioned sludge is obtained; deeply dehydrating the conditioned sludge to a target water content range to obtain sludge nutrient soil; the prepared sludge carbon is used as a sludge conditioner to be added into anaerobic digestion sludge, the sludge dewatering performance is improved through the effects of constructing a framework, adsorbing extracellular polymeric substances and the like, part of inorganic conditioning agents are replaced, the salt content and the conductivity of sludge nutrient soil are reduced, meanwhile, the high specific surface area and rich pores of the sludge carbon can adsorb water and nutrients, and the sludge carbon can be used for improving the sludge dewatering performance. Nutrient loss is reduced, and soil fertility is improved.

The application discloses a sludge anaerobic acid production strengthening method based on synergistic degradation of melanoid-like substances by thermal hydrolysis and potassium permanganate, which comprises the following steps: (1) screening and removing impurities from sludge, and then performing gravity sedimentation and concentration; (2) thermal hydrolysis treatment: high-temperature and high-pressure treatment, pressure relief and cooling; (3) adding potassium permanganate for oxidation, and combining with ultrasonic dispersion; (4) anaerobic fermentation: inoculating active sludge, and controlling fermentation conditions; and (5) separating and extracting short-chain fatty acids. The application realizes the synergistic effect of thermal hydrolysis and potassium permanganate, targets the degradation of melanoid-like substances generated in the thermal hydrolysis process, eliminates the inhibition of the melanoid-like substances on anaerobic microorganisms, and promotes the efficient dissolution of organic matters in sludge. The nano manganese dioxide generated by potassium permanganate oxidation serves as an electron transfer medium, further strengthens the metabolic activity of acid-producing bacteria, and the pickling recovery rate is greater than or equal to 90%. The method makes the yield of short-chain fatty acids increase by 65% (up to 456 mg / g VS), has high efficiency and environmental protection, and provides an innovative solution for sludge resource treatment.