85 results about "Thermal hydrolysis" patented technology

The utility model discloses a thermal hydrolysis cyanide breaking device, which relates to the technical field of wastewater treatment and comprises a cyanide breaking reactor, a wastewater heat exchanger, a pipeline mixer, a steam mixer, an instrument control valve and the like. After being heated by the wastewater heat exchanger, the wastewater enters a cyanide breaking reactor, and steam enters a steam mixer to heat the wastewater to a specified temperature and then enters the cyanide breaking reactor. The characteristic that the cyanide aqueous solution is easy to hydrolyze is utilized, so that the cyanide aqueous solution is hydrolyzed at the temperature of higher than 140 DEG C to produce sodium formate and ammonia, the toxicity of cyanide is eliminated, high-temperature wastewater discharged from the cyanide breaking reactor enters the wastewater heat exchanger to exchange heat with wastewater to be treated, and heat is recovered; the pressure of the reactor is controlled through a wastewater heat exchanger outlet wastewater outlet pipeline pressure regulating valve. The cyanide wastewater treatment device is reasonable in design, only a small amount of sodium hydroxide is needed for adjusting the pH of wastewater, no chemical agent needs to be added in other procedures, the cyanide wastewater treatment efficiency is improved, and the cost is saved.

The utility model relates to a sludge treatment device based on flash evaporation, which comprises a primary flash evaporation system and any one of a hydrolysis tank and a secondary flash evaporation system. The sludge is subjected to resourceful treatment in a flash evaporation and pyrohydrolysis and / or two-stage flash evaporation mode, cell walls in the sludge can be fully and effectively broken under the low-temperature condition through the flash evaporation technology, moisture and solute in cells are released, the dehydration performance of the sludge is improved, and the dehydration efficiency of the sludge is improved. The wall-broken sludge is conveyed to the hydrolysis tank for hydrolysis and / or the second flash evaporation tank for flash evaporation and drying, and the wall-broken sludge is more easily hydrolyzed and / or dried. According to the sludge drying device, the problems of high energy consumption, large heat loss and long treatment time in the sludge drying process are solved, and the productivity is greatly improved.

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 discloses a sludge anaerobic acidogenesis strengthening method based on pyrohydrolysis and potassium permanganate synergistic degradation of melanoids. The method comprises the following steps: (1) screening sludge to remove impurities, and then carrying out gravity settling concentration; (2) pyrohydrolysis treatment: high-temperature and high-pressure treatment, pressure relief and cooling; (3) adding potassium permanganate for oxidation, and performing ultrasonic dispersion; (4) anaerobic fermentation: inoculating activated sludge, and controlling fermentation conditions; and (5) separating and extracting the short-chain fatty acid. Through the synergistic effect of pyrohydrolysis and potassium permanganate, melanoids generated in the pyrohydrolysis process are degraded in a targeted mode, the inhibition effect of melanoids on anaerobic microorganisms is eliminated, and meanwhile efficient dissolution of organic matter in sludge is promoted. Nano-manganese dioxide generated by oxidizing potassium permanganate serves as an electron transfer medium, the metabolic activity of acid-producing bacteria is further enhanced, and the acid pickling recovery rate is larger than or equal to 90%. According to the method, the yield of short-chain fatty acid is increased by 65% (as high as 456mg / g VS), high efficiency and environmental friendliness are achieved, and an innovative solution is provided for sludge resourceful treatment.

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 petroleum fracturing flowback solid waste thermal hydrolysis device which comprises a treatment cylinder, and a supporting frame is mounted at the lower end of the treatment cylinder; the stirring mechanism comprises a driving motor mounted at the upper end of the treatment barrel, an output shaft of the driving motor extends into the treatment barrel and is fixedly connected with a rotating shaft, a thread layer is arranged on the rotating shaft, the thread layer is a reciprocating thread, and a lifting plate is in threaded connection with the thread layer; the inner top of the treatment cylinder is fixedly connected with a plurality of guide rods, the guide rods penetrate through the lifting plate and are in sliding connection, the lower end of the lifting plate is symmetrically and fixedly connected with two vertical rods, and the lower ends of the two vertical rods are jointly and fixedly connected with a lifting ring. When the hydrolysis device is used, materials to be hydrolyzed can be uniformly dispersed in a water body, so that the actual hydrolysis effect is improved, and in addition, the L-shaped metal rod is matched with the spiral induction coil for heating, so that the temperature of the water body is more uniform.

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 discloses a comprehensive treatment method for preparing bricks through synergy of high-water-content general solid waste sludge. The comprehensive treatment method comprises the steps of pyrohydrolysis pretreatment and anaerobic digestion deep dehydration, rotary kiln coking deep dehydration and stabilization, multi-source solid waste synergy mixing, brick making and the like. According to the method, deep dehydration, stabilization and harmlessness of the high-water-content sludge are achieved through the combined process of'thermal hydrolysis, anaerobic digestion and rotary kiln coking ', meanwhile, the sludge residues subjected to deep treatment and multiple solid wastes such as shale, construction waste and coal gangue are synergistically used as brick making raw materials, resource utilization of the multiple solid wastes is achieved, and the method is suitable for large-scale production. The method has the advantages of high deep dehydration efficiency, thorough sludge stabilization, energy recovery and utilization, solid waste synergetic recycling, remarkable environmental benefits, improvement of economic benefits and the like.

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 continuous sludge thermal hydrolysis reaction kettle and a detection method for sludge retention time thereof. The reaction kettle comprises an outer-layer heating jacket and an inner-layer tank body, a sludge feeding hole is formed in the bottom of the tank body, a sludge discharging hole is formed in the upper part of the tank body, and an access hole is formed in the middle of the tank body; a stirring paddle is arranged in the tank body and is controlled by a stirring motor at the top end outside the tank body to rotate, three groups of fan blades are arranged on the stirring paddle, two groups of guide plates are arranged on the inner wall of the tank body, and the interior of the tank body is divided into an upper area, a middle area and a lower area by the guide plates. Through the synergistic effect of the stirring paddle and the guide plate, the retention time of the sludge in the reaction kettle can be effectively ensured to accord with the optimal interval in a sludge thermal hydrolysis treatment system which continuously operates, so that the sludge hydrolysis efficiency of the whole system is improved.

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 present invention discloses an autoclave assembly, a system for solid waste treatment by thermal hydrolysis comprising at least two autoclave assemblies and a method for solid waste treatment by thermal hydrolysis using the system for solid waste treatment by thermal hydrolysis. The present invention solves all the problems associated with the treatment of the "complex" solid waste (composition of fibrous materials, such as textile and plastics), with advantages such as: being able to use a single inlet / outlet point of the treatment container located at the bottom, thereby saving in infrastructure, harnessing the storage capacity of the vertical arrangement, using conveyor systems that provide good fluid dynamics without clogging, avoiding the winding of fibrous materials and using a system configured to mobilise all the solid waste accumulated in the vertical container, allowing internal recirculation during the treatment that substantially improves heat transfer.

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.

The present application relates to a kind of electrical control device and its method for biogas slurry thermal hydrolysis coupling ammonia removal system, comprising the following steps: in PID control unit, the high and low threshold of the data corresponding to each probe and the high and low threshold of the pressure difference in flash separator, thermal hydrolysis reactor are set;Start biogas slurry thermal hydrolysis coupling ammonia removal system and its electrical control device, PID control unit compares the data obtained by probe with threshold, controls the start-stop of pulping screw feed pump, thermal hydrolysis feed pump and valve.The beneficial effects of the present application are: by selectively adding liquid level probe, temperature probe and pressure sensor probe in pulping reactor, thermal hydrolysis reactor and flash separator, data collection is carried out, and through the calculation of PLC control system, flash separator and biogas slurry thermal hydrolysis reuse system are cooperated with each other, the removal rate of ammonia in biogas slurry is improved;Automatic operation of biogas slurry thermal hydrolysis coupling ammonia removal system is realized.

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 present invention discloses a multi-split system and a control method thereof. The multi-split system comprises: a hot water heat exchanger and a constant temperature water tank; the hot water heat exchanger is connected between an outdoor heat exchanger and an indoor heat exchanger via a first pipe; the hot water heat exchanger is further connected between a main water inlet and the water inlet of the constant temperature water tank via a second pipe; the hot water heat exchanger is used to exchange heat between the refrigerant in the first pipe and the water in the second pipe. The present invention realizes the use of condensation waste heat to produce hot water, fully and effectively recycles and utilizes condensation waste heat, improves energy utilization, and improves the energy-saving effect and economic benefits of the unit. Furthermore, the production of hot water does not affect the efficiency of cooling or heating, and can achieve long-term continuous hot water production, thus solving the problem that the multi-split system cannot effectively utilize condensation waste heat.

The invention discloses an integrated treatment reactor for sludge wet oxidation and a treatment method, and aims to solve the problems that in the prior art, sludge and substances required by treatment are fully mixed, so that the reaction is not thorough, the thermal hydrolysis effect is poor, the subsequent oxidation reaction is finally influenced, sludge reduction, harmlessness and stabilization cannot be efficiently realized, and in addition, the treatment cost is low. The waste gas generated by the reaction is directly discharged, pollutants, particulate matters and the like contained in the waste gas can pollute the atmospheric environment, and secondary pollution is generated; the device comprises a reactor main body, an upper cover is arranged at the center of the upper end face of the reactor main body, a control panel is arranged at the position, close to the lower portion of the center, of one side of the reactor main body, a hopper is arranged at the center of the interior of the reactor main body, and a discharging electromagnetic valve is arranged at the center of the lower end face of the hopper. In addition, it is ensured that discharged gas reaches the environmental protection standard, and secondary pollution is avoided.

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.