669results about How to "Reduce output" patented technology

The invention relates to the field of forklift welding, in particular to a forklift gantry welding positioning device which comprises a supporting frame, a stand column fixing mechanism used for fixing gantry stand columns, a part positioning mechanism used for driving parts to move, a plurality of feeding mechanisms and a control unit. And the control unit is electrically connected with the stand column fixing mechanism and the component positioning mechanism. The stand column fixing mechanism is used for clamping, fixing and rotating positioning of the portal stand column, the part positioning mechanism is arranged for moving and positioning parts, the whole process is controlled by a motor, the automation degree of portal welding and the welding positioning precision are improved, and the production efficiency is improved. Meanwhile, various parts can be clamped and fixed through the part positioning mechanism, and the welding tool does not need to be replaced.

The utility model discloses sealing equipment for a food packaging bag, belongs to the technical field of food packaging bags, and is used for solving the problems that in the pre-packaged food sealing process, bag opening, material loading and then sealing need to be assisted by multiple persons, time and labor are wasted, and efficiency is low. Comprising a conveying mechanism and a packaging mechanism. After the food packaging bag is conveyed to a material storage tank and material loading is completed, the food packaging bag can be continuously driven to move towards the sealing assemblies, when the food packaging bag is located between the two sealing assemblies, two second servo electric cylinders can drive the two sealing assemblies to seal an opening of the food packaging bag, and after sealing is completed, the food packaging bag is driven to move towards the sealing assemblies. The adsorption assembly drives the sealed food packaging bags to be conveyed to the conveying device under the action of the electric sliding block and the electric sliding rail to be conveyed and packaged, through the mode, conveying, bag opening, discharging, packaging and conveying are integrated, output of manual labor is greatly reduced, and the working efficiency is improved.

The invention discloses arginine methyltransferase protein from phytophthora plant pathogenic oomycetes as well as a coding gene and application thereof. The arginine methyltransferase protein provided by the invention is as shown in sequences 6-8; the coding gene is shown in sequences 1-3. Experiments prove that the protein disclosed by the invention plays an important role in growth, development and pathopoiesis processes of typical phytophthora plant pathogen oomycete phytophthora capsici, and after the protein is deleted or the expression level is reduced, the growth rate of phytophthora capsici hyphae is reduced, the sporangium yield is reduced, the number of zoospore is reduced, the pathogenicity is reduced and the like. Corresponding arginine methyltransferase inhibitors have different degrees of activity on typical plant pathogenic oomycetes such as phytophthora capsici, phytophthora sojae and phytophthora infestans. The gene provided by the invention has great application potential in the aspect of preventing and controlling the crop epidemic diseases caused by phytophthora plant pathogenic oomycetes, and a novel bactericide developed based on the protein as an action target has important practical significance in controlling the occurrence and prevalence of the crop epidemic diseases caused by phytophthora.

The invention relates to the technical field of sewage treatment, in particular to a low-carbon nitrogen and phosphorus removal sewage treatment system, a sewage treatment method and application thereof. The sewage treatment system comprises a pretreatment unit, an adsorption tank, a mid-sedimentation tank, a biochemical tank, a secondary sedimentation tank and an anaerobic hydrolysis acidification tank; the biochemical tank comprises an anaerobic tank, an anoxic tank and an aerobic tank; the anaerobic hydrolysis acidification tank is provided with a VFAs-containing supernate outlet communicated with the anaerobic tank; the mid-sedimentation tank is provided with an adsorbed sludge outlet and a sewage outlet, the adsorbed sludge outlet is communicated with the adsorption tank and the anaerobic hydrolysis acidification tank, and the sewage outlet is communicated with the anaerobic tank; the secondary sedimentation tank is provided with a biological sludge outlet and a water outlet, and the biological sludge outlet is communicated with the anaerobic tank and the anaerobic hydrolysis acidification tank. According to the sewage treatment system, denitrifying phosphorus-accumulating bacteria, nitrifying bacteria and hydrolytic acidification bacteria can be cultured in different sludge systems, and the contradiction between the denitrifying phosphorus-accumulating bacteria, the nitrifying bacteria and the hydrolytic acidification bacteria on substrate competition and sludge age is solved; and the anaerobic hydrolysis acidification tank is arranged to recycle a carbon source in the sewage, so that the advantage of low carbon is achieved.

The invention relates to an intelligent AI information processing method and system and an intelligent terminal, and relates to the technical field of information processing, and the method comprises the steps: obtaining sound detection information in a preset detection range and triggering information of a user; inputting the sound detection information into a preset noise model to match noise detection information; updating the sound detection information through a preset sound processing method according to the noise detection information; inputting the updated sound detection information into a preset audio processing system, and determining an output text according to the updated sound detection information when the audio processing system outputs the text; obtaining a selected domain image based on the trigger information; determining a selected text field according to the selected field image; and performing matching combination according to the selected text field and the output text to obtain final uploading information, and uploading the final uploading information to a preset storage database for storage. The information processing method and device have the effect of improving the information processing accuracy.

The invention discloses a passive feed-forward noise shaping SAR ADC structure and a quantification method thereof. The structure comprises a second-order noise shaping circuit based on a charge pump, a sampling switch circuit, a DAC capacitor array, a six-input comparator and a logic control circuit. The method comprises the following steps: sampling an input analog signal to an upper pole plate of a DAC capacitor array; carrying out inter-board capacitor voltage switching processing according to the control signal, and outputting a successive approximation voltage signal; obtaining quantization residual voltage in inter-board capacitor voltage switching processing, performing second-order noise shaping filtering processing, and outputting a first-order integral voltage signal and a second-order integral voltage signal; comparing the successive approximation voltage signal, the first-order integral voltage signal and the second-order integral voltage signal to obtain a digital code; and carrying out inter-board capacitor voltage switching according to the digital code to obtain a quantization result. According to the embodiment of the invention, the power consumption of the SAR ADC structure can be reduced, and the quantization precision of the SAR ADC structure can be improved. The circuit can be widely applied to the technical field of integrated circuits.

The invention discloses a drip irrigation device for agricultural irrigation, comprising a water pipe connected to a pump, the water pipe connected to the pump is connected to a number of irrigation mechanisms, the irrigation mechanisms are respectively connected to control mechanisms, the irrigation mechanisms are respectively connected to the control mechanisms, the irrigation mechanisms are provided with an irrigation bottom, an irrigation middle, and an irrigation top from bottom to top, the number of irrigation mechanisms and control mechanisms can be determined according to the conditions of agricultural land, the part inserted into the ground is designed to be in the form of a cross arrow, so that the insertion into the ground is more stable and not easy to topple over; by setting the control mechanism, the amount of water dripping into the ground can be controlled, which will not cause excessive water content in the root system and a decrease in yield; the device reduces agricultural irrigation costs, has low maintenance costs, and can still manually adjust the water output when the control mechanism is damaged, which is convenient and quick.

The invention discloses a method for carrying out synchronous biological nitrogen and phosphorus removal by adopting an MABR, which comprises the following steps: respectively introducing two parts of wastewater and raw water into a nitrogen removal area and a phosphorus removal area in a sewage treatment system, and enabling the amount of wastewater entering the nitrogen removal area to be greater than the amount of wastewater entering the phosphorus removal area; the denitrification zone is provided with a plurality of MABR membrane assemblies, the dissolved oxygen concentration of the denitrification zone is monitored and kept at 0.1 mg / L-0. 3mg / L, and effluent of the denitrification zone enters the dephosphorization zone; monitoring the dissolved oxygen concentration of the dephosphorization area, and keeping the dissolved oxygen concentration of the dephosphorization area at 2mg / L to 4mg / L; effluent of the phosphorus removal area enters the solid-liquid separation area, supernate of the solid-liquid separation area flows back to the nitrogen removal area, one part of sludge at the bottom of the solid-liquid separation area is discharged out of the system as residual sludge, and the other part of sludge flows back to the phosphorus removal area. According to the method for performing synchronous biological nitrogen and phosphorus removal by adopting the MABR, the sewage treatment efficiency can be improved.

The invention provides a low-carbon ultra-deep denitrification method and device for town sewage, belongs to the field of sewage treatment, and is used for town sewage treatment. In a continuous flow anaerobic-aerobic anoxic alternating-post anoxic process, town sewage and refluxed heavy sludge enter an anaerobic zone of a biochemical pool, refluxed light sludge and added hydroxylamine enter an aerobic anoxic alternating zone of the biochemical pool, and a sludge-water mixed solution flowing out of a post anoxic zone of the biochemical pool enters a secondary sedimentation tank for sludge-water separation; and discharging the supernatant as effluent, separating the precipitated sludge into heavy sludge and light sludge in a cyclone separator, refluxing the heavy sludge and part of the light sludge into the process according to the mode, and discharging part of the light sludge as residual sludge. Microorganisms in the sludge store an internal carbon source in an anaerobic zone of the biochemical pool, short-cut nitrification-endogenous denitrification is realized in an aerobic-anoxic alternating zone of the biochemical pool, and ultra-deep endogenous denitrification nitrogen removal is realized in a rear anoxic zone of the biochemical pool. According to the invention, low-carbon ultra-deep nitrogen removal of town sewage can be realized.

The invention discloses a photovoltaic wastewater lime-process crystallization treatment process and a treatment system used by the same, which are characterized in that acid fluoride wastewater and alkali washing wastewater generated in a photovoltaic sheet production process are respectively collected by an acid fluoride wastewater collecting pool and an alkali washing wastewater collecting pool; the acid fluoride wastewater and a lime agent are subjected to a crystallization reaction in a crystallization fluidized bed to obtain calcium fluoride crystals, effluent of the crystallization fluidized bed and alkali washing wastewater are mixed in a secondary defluorination unit, and calcium chloride is added for a defluorination reaction after the pH value is adjusted; the effluent of the second-stage fluorine removal unit reacts with a fluorine removal agent or polyaluminum chloride in the third-stage fluorine removal unit to remove fluorine again, polyacrylamide is added into the third-stage fluorine removal unit to perform a flocculation reaction, and finally, the fluorine ion concentration in the effluent of the third-stage fluorine removal unit meets the discharge requirement. The agent input cost and the sludge treatment cost are reduced, the secondary pollution of chloride ions is avoided, and the effluent is ensured to stably reach the standard.

The invention discloses a method for synergistically removing nitrate and degrading antibiotics through sulfur autotrophy-heterotrophy, which comprises the following steps: (1) taking an SBR (sequencing batch reactor), inoculating anoxic sludge of a sewage treatment plant, adding CH3NaS, Na2S2O3 and NaHCO3 into influent water containing nitrate, and domesticating the sludge; and (2) after domestication in the step (1) is completed, carrying out anoxic stirring, introducing nitrate-containing wastewater, adding a solution containing CH3NaS and antibiotics into the reactor, carrying out a stirring reaction, determining a first-order derivative of ORP, when the first-order derivative dORP / dt is less than or equal to r, repeating the steps of adding the solution containing CH3NaS and antibiotics, carrying out a stirring reaction, and determining the first-order derivative of ORP for many times, and when the last first-order derivative dORP / dt is less than or equal to r, stopping adding the solution containing CH3NaS and antibiotics. Carrying out anaerobic stirring, precipitating, draining and stopping to complete domestication of the sludge; and (3) introducing wastewater to be treated to remove nitrate and antibiotics. The method provided by the invention can realize sulfur autotrophy-heterotrophy synergistic efficient removal of nitrate and tolerate beta-lactam antibiotic stress.

The invention discloses a preparation method and application of a composite nitrogen, phosphorus and sulfur removal autotrophic filter material, and relates to the technical field of sulfur autotrophic filter materials, and the preparation method comprises the following steps: stacking and combining a basic filter material, a catalyst loaded filter material, a strain-heterojunction loaded filter material and a magnesium oxide microsphere filter material from top to bottom, the composite nitrogen, phosphorus and sulfur removal autotrophic filter material is obtained; in the stacking combination process of the composite nitrogen, phosphorus and sulfur removal autotrophic filter material, the stacking thickness ratio of the basic filter material to the catalyst loaded filter material to the strain-heterojunction loaded filter material to the magnesium oxide microsphere filter material is 10: (3-5): (2-4): (4-5). The efficient and low-cost composite nitrogen, phosphorus and sulfur removal autotrophic filter material is developed according to the synergistic treatment requirements of nitrogen and phosphorus pollution and PNP pollution.

The invention provides a galvanized plate laser cutting machine, and belongs to the technical field of galvanized plate cutting equipment. Comprising a table body, transmission guide rails are arranged on the two sides of the top of the table body, a clamping and blocking structure is movably clamped to the tops of the transmission guide rails, and a dust collecting structure is arranged in the middle of the top of the table body. Through the arranged clamping and blocking structure, when a galvanized plate is machined, the galvanized plate is placed between a left clamping plate and a right clamping plate, then the galvanized plate is clamped through the rebound resilience of a second spring, then a transmission guide rail pushes a sliding groove and the galvanized plate on the top to the bottom of a dust collecting structure, and meanwhile a first trapezoidal frame is driven to horizontally move; and when passing through the inclined surface of the second trapezoidal frame, the first trapezoidal frame and the lifting plate are pushed to ascend along the limiting frame, so that the galvanized plate is completely sealed, laser is isolated when the galvanized plate is machined, noise output is reduced to the maximum extent, and damage of laser irradiation and noise to workers is reduced.

The invention belongs to the technical field of amino acid production, and discloses a method for reducing the content of potassium ions in a culture medium, which comprises the following steps: dividing a fermentation culture medium for producing glutamic acid by microorganisms into a fermentation culture medium A and a fermentation culture medium B, and maintaining the content of potassium ions in the fermentation culture medium A to be 50% or less of that in the fermentation culture medium B. By optimizing the addition amount of potassium ions in the non-fermentation stage, the glutamic acid production rate is increased, and the fermentation period is shortened.

The utility model discloses a denitrification treatment system for wastewater containing high ammonia nitrogen and refractory organics, and belongs to the technical field of wastewater treatment. The system comprises a coarse / fine grid, an adjusting tank, an anaerobic reaction tank, an anaerobic sedimentation tank, a Fenton reaction tank, an iron ammoxidation adjusting tank, an iron ammoxidation reaction tank, an iron ammoxidation sedimentation tank, a liquid alkali sedimentation tank, a sulfur autotrophic adjusting tank and a sulfur autotrophic tank which are sequentially communicated along the wastewater treatment direction, at least part of sludge in the anaerobic sedimentation tank flows back to the anaerobic reaction tank, at least part of sludge in the iron ammonia oxidation sedimentation tank flows back to the iron ammonia oxidation reaction tank, and at least part of sludge in the liquid caustic soda sedimentation tank flows back to the Fenton reaction tank; and residual sludge in the anaerobic sedimentation tank, the iron ammonia oxidation sedimentation tank, the liquid caustic soda sedimentation tank and the sulfur autotrophic tank sequentially enters a sludge concentration tank and sludge dewatering equipment. On the premise of meeting the production and environmental protection requirements, the operation and sludge treatment cost is reduced, and the operation stability of the treatment system is improved.

The invention discloses an application of a rice OsRNU7 gene. The registration number of the nucleotide sequence of the OsRNU7 gene in Genbank is LOC4337677, and the registration number of the nucleotide sequence of the OsRNU7 gene is LOC4337677. RNA-seq is utilized to discover that the OsRNU7 shows response to the external nitrogen supply level, and fluorescent quantitative PCR (Polymerase Chain Reaction) proves that the OsRNU7 is induced by high nitrogen. The OsRNU7 is knocked out, so that the nitrogen absorption rate, the plant height and the yield of the rice are reduced, and the comprehensive performance is that the nitrogen fertilizer utilization efficiency is reduced. The function of the OsRNU7 gene for positively regulating the utilization efficiency of the rice nitrogen fertilizer is defined, and a technical route for improving the utilization efficiency of the rice nitrogen fertilizer by increasing the expression of the OsRNU7 in rice is provided.

The invention relates to a cold precipitation-salting-out integrated ammonium chloride preparation method and system, which comprises the following steps: reducing the temperature of an ammonium chloride-containing solution generated in a combined alkali production process to below 10 DEG C, then adding sodium chloride into the solution while stirring until an ammonium chloride saturated salt solution is formed, standing, then cooling in a stepped manner, and after ammonium chloride crystals are completely separated out, obtaining ammonium chloride. And centrifuging to obtain an ammonium chloride product. Compared with a traditional separation preparation method of cold precipitation and salting-out in sequence, the method has the advantages that the ammonium chloride-containing solution generated in the combined alkali production process is subjected to cold precipitation and salting-out at the same time through one-step operation, so that the process flow is simplified, the time is greatly saved, the production efficiency and the yield are improved, the equipment investment is reduced, and the process operation cost is reduced; and the yield is improved.

The invention discloses a process and a treatment system for preparing white carbon black by utilizing photovoltaic cell wastewater, which are characterized in that concentrated alkali wastewater in a concentrated alkali regulating tank and part of concentrated acid wastewater in a concentrated acid regulating tank are mixed in a primary mixing tank, and then a primary gelation reaction is carried out through a primary gelation reactor; the method comprises the following steps: preparing concentrated acid wastewater from concentrated acid wastewater, dehydrating the concentrated acid wastewater by a primary dehydration device to obtain coarse gel particles, dissolving the coarse gel particles in an alkali dissolution tank by liquid alkali, mixing the coarse gel particles with the rest concentrated acid wastewater in a secondary mixing tank, feeding the mixture into a secondary gelation reactor for secondary gelation reaction, and supporting the fine gel particles by a secondary dehydration device to obtain fine gel particles. According to the method disclosed by the invention, the yield of silicon-containing sludge in subsequent fluorine removal is reduced, the purity of calcium fluoride sludge is favorably improved, silicon resources in the concentrated alkali wastewater are recycled, and resourceful treatment of the concentrated alkali wastewater is realized.

The invention discloses a method for reinforcing anaerobic ammonia oxidation denitrification and dephosphorization of an urban sewage treatment plant by using a falling biological membrane. The method is realized based on a system consisting of two main units, namely a functional area I and a functional area II. Inlet water of the first functional area and part of outlet water of the settling pond enter a second functional area anoxic zone (8), and sludge of the second functional area flows back to a first functional area nitrogen and phosphorus removal unit (1) of the urban sewage treatment plant from a second functional area settling pond (9) through a sludge backflow pipeline (10). Therefore, the overall anaerobic ammonium oxidation bacteria abundance of the suspended sludge in the system of the functional area I is enhanced, and the denitrification performance is further improved. The anoxic zone reduces the nitrogen load of the whole system, and meanwhile, part of carbon sources saved in the anaerobic ammonia oxidation process are beneficial to biological phosphorus removal. According to the method, the nitrogen and phosphorus removal performance can be effectively improved without interrupting operation of the sewage treatment plant, and the method is suitable for upgrading and reconstruction of a built urban sewage treatment plant or deep nitrogen and phosphorus removal of a newly built sewage treatment plant.

The invention belongs to the technical field of agricultural planting, and particularly relates to a method for improving drought tolerance and yield of wheat through combined application of wormcast and sodium selenite. According to the method, the wheat is sown after the wormcast is applied to the soil, and the sodium selenite solution is sprayed when drought stress occurs, so that the growth index of the wheat under the drought stress can be remarkably improved, oxidative stress indexes such as MDA, H2O2 and O2 <-> in the wheat can be remarkably reduced, the activity of antioxidant enzymes SOD, POD, CAT and APX is increased, and meanwhile, the flour yield of wheat grains is also increased.

The invention discloses a method for treating nitrogen in high-nitrogen wastewater by using autotrophic denitrification. The method comprises the following steps: S1, adjusting the pH value of to-be-treated high-nitrogen wastewater to 7.0-8.0 and the total nitrogen concentration to be less than or equal to 1000mg / L; s2, heating the high-nitrogen-content wastewater subjected to pH regulation in the step S1, and heating to 25-35 DEG C; s3, the high-nitrogen-content wastewater heated in S2 enters an autotrophic denitrification device from the bottom at a constant flow rate, the load of an autotrophic denitrification filter material is controlled to be 0.3-0.8 kgTN / t.d, and the water inlet flow rate is controlled to be 0.5-8 m / h; s4, enabling the wastewater to pass through the upper effluent of the autotrophic denitrification device to meet the treatment requirements. The method has the advantages of simple treatment process, wide application range, high load, small land occupation, no need of mechanical stirring, no need of additional organic carbon sources, extremely low sludge yield, effective reduction of the construction cost and the operation cost, and significant economic and environmental benefits.

The invention belongs to the technical field of medicines, and relates to an acinetobacter baumannii AbaR protein binding preparation and application thereof. The morusin O can be effectively combined with AbaR protein in acinetobacter baumannii, so that an AHL quorum sensing system of the acinetobacter baumannii is inhibited. It is proved that morusin O can significantly inhibit the biofilm forming ability of the Acinetobacter baumannii ATCC 19606 strain, reduce the motility of bacteria and reduce the toxicity of bacteria to cells, and does not significantly affect the growth of bacteria to cause selective pressure to promote the evolution of drug resistance of bacteria.

The invention discloses a non-contact portable sampling device for a polluted water body. The non-contact portable sampling device comprises a bracket, a sampling assembly, a retractable assembly and a collecting assembly, the sampling assembly comprises a mounting sleeve, an annular sampling pipe and a sampling pump; the winding and unwinding assembly comprises a mounting plate and a first winding disc connected to the mounting plate in a clamped mode, and a first inhaul cable connected with the mounting sleeve is arranged on the first winding disc. The collecting assembly comprises a transfer box arranged on the support and a collecting bottle arranged in the transfer box. The device is reasonable in structural design, the sampling assembly is suspended on the water surface through the support, a worker can stand on a river bank to complete the whole sampling work, the risk that the worker falls into a river channel is reduced, and the use safety of the device is improved; meanwhile, when the device is used, a worker does not need to be in contact with the water sample, so that on one hand, the harm of the polluted water body to the worker is reduced; on the other hand, the water sample can be prevented from being polluted by external factors to influence the detection result of the water sample.

The invention relates to the technical field of metallurgy, in particular to a method for extracting lithium through microwave acidification roasting and mechanical force ball milling leaching. According to the method for extracting lithium through microwave acidification roasting and mechanical force ball-milling leaching, microwave energy can be used for assisting calcination transformation of spodumene, and microwave energy is used for roasting an acid leaching material, so that the calcination effect is rapidly and efficiently achieved, and the use amount of sulfuric acid and calcination energy consumption are reduced. And a planetary ball mill is used for performing mechanical ball milling and water leaching on the caked roasted material after acid leaching and calcination, so that the water leaching efficiency is improved, and the lithium extraction rate is improved.

The invention discloses a double-biological-membrane sewage treatment process for deep nitrogen and phosphorus removal coupled sludge reduction, and belongs to the technical field of sewage treatment. The process is composed of an anoxic biofilm reaction tank, an aerobic biofilm reaction tank and an iron autotrophic denitrification biofilter, and efficient nitrogen and phosphorus removal is performed on sewage through the double-biofilm sewage treatment process. Nitrogen and phosphorus removal and sludge in-situ reduction are mainly carried out in the front-end biological membrane reaction tank, and deep nitrogen and phosphorus removal is mainly carried out in the iron autotrophic denitrification biological filter tank. And the residual sludge is predded by using a protozoon / metazoon food chain of the aerobic biological membrane reaction tank, so that the effect of zero generation of the residual sludge is achieved. The concentration of iron ions is changed by adjusting the reflux ratio of iron-ion-containing reflux liquid generated by the iron autotrophic denitrification biofilter, so that the number and community structures of micro-organisms are effectively controlled, the control on sludge predation is further achieved, and the sludge reduction effect is improved. The process is obvious in effect, can stably operate for a long time and is suitable for engineering application.

The utility model relates to the related technical field of sewage treatment, in particular to a distributed domestic sewage treatment system which comprises a treatment box, and a sewage treatment mechanism is arranged in the treatment box. According to the distributed domestic sewage treatment system, through the arrangement of the sewage treatment mechanism, sewage is firstly collected into the anoxic zone, the sewage is filtered from a grating to remove solid impurities in the sewage and flows down along an inclined plate, and the sewage in the anoxic zone flows into the aerobic zone from an opening in the bottom, so that the biological phosphorus removal effect is achieved; after the water level of the anoxic zone reaches a certain position, the sewage flows into the enhanced treatment zone through a perforated plate, after the sewage flows through an MBBR filler carrier, a biological membrane is formed on the carrier, and organic pollutants in the sewage are degraded while microorganisms massively propagate and grow on the biological membrane, so that the effect of purifying the sewage is achieved; and the water circularly flows through the filler carrier through the water suction pump, and the purified water can be discharged from the water outlet by screwing the water valve.

The utility model discloses an aquaculture wastewater up-to-standard discharge treatment device which comprises a sludge storage tank, a solid-liquid separator, a stock solution tank, a regulating tank and an integrated aquaculture wastewater treatment device, the integrated culture wastewater treatment device comprises an up-flow anaerobic granular sludge treatment unit, an activated sludge treatment unit, a short-cut nitrification-anaerobic ammonia oxidation treatment unit and a contact oxidation treatment unit, wherein the short-cut nitrification-anaerobic ammonia oxidation treatment unit improves the sludge activity by forming hydroxyapatite carrier type anaerobic ammonia oxidation granular sludge, and realizes synchronous nitrogen removal and phosphorus recovery. The inclined tube assemblies and the hollow folded plate type precipitators are arranged in the units of the integrated treatment device, so that the precipitation water conservancy condition is improved, the precipitation effect is improved, and the effluent can meet the discharge standard of pollutants in the livestock and poultry industry. The integrated device has the advantages of compact structure, small occupied area, small aeration rate, low sludge yield and synchronous low-carbon nitrogen removal and phosphorus resource recovery.

The invention discloses a continuous synthesis method of 3, 5-di-tert-butyl-4-hydroxybenzyl methyl ether, and belongs to the technical field of organic synthesis. The method comprises the following steps: reacting 2, 6-di-tert-butylphenol, paraformaldehyde and methanol under the action of a dimethylamine methanol and piperazine mixed catalyst, recovering methanol through rectification, crystallizing, carrying out suction filtration, and drying to obtain 3, 5-di-tert-butyl-4-hydroxybenzyl methyl ether; secondly, the recovered devitrification filtrate can be directly and circularly used for recovering the 3, 5-di-tert-butyl-4-hydroxybenzyl methyl ether and the methanol. According to the method, dimethylamine methanol and piperazine are compounded to serve as a catalyst for concerted catalysis, generation of by-products is effectively reduced, the product yield can reach 95.75%, and the purity can reach 96.6%. According to the synthesis method, the crystallization filtrate is recycled, the product and the solvent can be fully recovered, the loss is reduced, and the cost is saved; continuous production is adopted, a purification section is avoided, operation steps and energy consumption are reduced, and the production requirements of green chemical industry are met.

The utility model belongs to the technical field of aluminum ash treatment equipment, and particularly relates to a roller screen anti-blocking device which comprises a bracket and a roller screen drum above the bracket, a sweeping anti-blocking piece is arranged on one side of the roller screen drum, a beating piece and a driving device are further arranged on the bracket, and the driving device is used for driving the roller screen drum to rotate. The sweeping anti-blocking piece comprises a scraper, a brush and a rolling brush which are sequentially arranged in the rotating direction of the roller screen drum, the scraper and the rolling brush are located on the inner side of the roller screen drum, the brush is located on the outer side of the roller screen drum, connecting plates are arranged at the two ends of the roller screen drum, the scraper and the brush are fixedly arranged between the two connecting plates, and the rolling brush is rotationally arranged between the two connecting plates; one side of the scraper is in contact with the inner side wall of the roller screen drum. According to the roller screen, the scraping plate is arranged in the roller screen and used for scraping materials attached to the inner wall of the roller screen, then the materials in the screen holes are ejected out through the brush, the screen holes are further guaranteed to be dredged through the roller brush, and then the material screening efficiency is guaranteed.

The invention relates to the technical field of feed, and discloses a feed additive for laying hen breeding and a preparation method thereof.The feed additive for laying hen breeding is obtained by drying vitamins, nicotinamide, an antioxidant butylated hydroxytoluene, calcium pantothenate, modified chitosan and liquorice, putting the materials into a stirrer, conducting smashing and then conducting mixing. The feed additive obtained by compounding the raw materials can promote the growth of laying hens and promote the organ development of the laying hens; the oxidation resistance and the immunocompetence of the laying hens are improved; amino acid and chitosan groups contained in the modified chitosan also play a better role in helping the growth of the laying hens. The feed additive can shorten the laying day age of laying hens, improve the laying rate, improve the quality of eggs, reduce the yield of inferior eggs, improve the body quality of the laying hens and the like, is a non-toxic, drug-resistant and residue-free laying hen feed additive, and can be widely applied to laying hen feeding feeds.