54 results about "Microbial Concentration Method" patented technology

The invention relates to a video concentration method used for a video with a still picture, and belongs to the technical field of video compression. At first a video to be concentrated is processed frame by frame, initial judgment state of all pixel points of video frames are confirmed by utilizing a motion detection method based on Gaussian mixture, and the final judgment state is confirmed by carrying out spatial filtering processing on all the pixel points of the video frames, and comparing the size of the number of the pixel points with the final judgment state of motion state with a threshold value to obtain the initial judgment state of the video frames. When process of frame by frame is finished, time-domain filtering is carried out on the initial judgment state of all the video frames and the final judgment state of all the video frames is obtained, video frames of the stationary state within all the video frames are removed, and the video after concentration is obtained. The video concentration method used for the video with the still picture lowers video data amount substantially under the premise of retaining amount of information in a maximum degree, brings convenience for storage and transmission, at the same time concentrates the video to facilitate a viewer to extract information in a high-efficient mode, and has the advantages of being flexible and easily-controlled in concentration degree, and high in robustness in a slowly-changing environment and the like.

The invention relates to a technology for preparing a dietary fiber by a microbial fermentation method. The technology comprises the steps of taking waste scraps generated in a processing procedure of a bamboo shoot as a raw material, and performing fermentation seed liquid preparation, raw material treatment, raw material fermentation substrate preparation, inoculation, fermentation, vacuum freeze drying and the like to form a finish product of the bamboo shoot dietary fiber. The final product is natural in color, delicate in taste and fragrant in smell, a soluble dietary fiber content, water-holding power and swelling power are increased to various extents, and the technology can be put into industrial production. The technology is simple in operating condition and reliable in method, realizes comprehensive utilization of bamboo shoot resources, and increases a production added value of the bamboo shoot.

The invention belongs to the technical field of chemistry, and relates to a nitric acid extraction and concentration method, wherein dilute nitric acid is preheated by circulating sulfuric acid and then enters a nitric acid concentrating tower, the circulating sulfuric acid is further cooled and then enters the concentrating tower, the nitric acid is concentrated under the action of the sulfuric acid, so the concentrated sulfuric acid is formed and discharged from an overhead condenser, and a nitric acid product is obtained after nitric oxides are bleached and stripped by air; the dilute nitric acid is discharged from a reboiler of the nitric acid concentrating tower and is then vacuum concentrated, and the reboiler of the nitric acid concentrating tower adopts indirect steam heating; thedilute nitric acid undergoes first-class flash evaporation and then automatically flows into a sulfuric acid evaporator to be concentrated into a sulfuric acid product; and the whole technological process is simple and is easy to control, the operation load is low, raw materials are saved, the equipment is simple, the investment is less, the production efficiency is high, and the economic benefitis good.

The invention relates to a forward osmosis concentration system. The system comprises a seawater pretreatment clarifying tank, a first circular draw-off pump, a multistage draw solution evaporation regulating tank, transparent glass, a second circular draw-off pump, a secondary filtration device, a draw solution storage tank, a draw solution injection pump, a concentrated liquor draw-off pump, a concentration tank, a concentrated liquor injection pump, a forward osmosis device, a draw solution draw-off pump, a third circular draw-off pump, a water collecting pipeline and a water collecting tank. Water in raw juice is driven by osmosis pressure in the system to enter a draw solution through a forward osmosis membrane, thus realizing the concentration of the raw juice; the diluted draw solution can be evaporated into a high-concentration draw solution through a seawater baysalt technology, and is delivered back to the forward osmosis technology again as a draw solution, thus the high-efficiency cyclic utilization of the draw solution is realized, the engineering construction cost and the running cost are greatly reduced, and considerable economic benefits are achieved.

The invention discloses a concentration method and device for a traditional Chinese medicine extracting solution, which eliminate vacuum leakage, reduce the working amount, make production be more ordered and can find out failure reasons more quickly and conveniently. According to the technical scheme, the concentration method sequentially comprises the following steps of: (1) starting an automatic water supplementation valve to automatically supplement water to a buffering tank, so that a water feeding pipe in a recycling tank is lower than a liquid level in the tank, and the buffering tank contains water; (2) then starting fed liquid concentration equipment, detecting the flow of a liquid feeding pipeline through an electromagnetic flowmeter, transmitting the flow to a controller, judging whether a liquid feeding valve on the liquid feeding pipeline is open or closed according to the flow by the controller, and supplementing liquid to a concentration pot; and (3) when the concentration pot concentrates liquid, after a heat exchanger exchanges heat of the liquid, controlling an automatic valve and a condensed water discharging pump by the controller to enable condensed water from the heat exchanger to be mixed with condensed water from a roof evaporation type condenser and then to be fed into the recycling tank. The concentration device belongs to the technical field of concentration equipment.

Belonging to the field of food processing, the invention provides a compound probiotics fermented yellow peach clear juice beverage and a preparation method thereof. The process of the invention comprises the following steps: taking fresh peach as a raw material, preventing color, beating, adding a certain proportion of compound enzyme containing 0.03-0.06% of pectase, 0.02-0.05% of cellulase, 0.01-0.04% of xylanase and 0.03-0.06% of beta-glucanase; conducting enzymatic hydrolysis at 40 DEG C for 60-80 min, filtering, centrifuging, conducting pasteurization, cooling, inoculating 2-10% of compound probiotics fermentation agents including Lactobacillus plantarum, Lactobacillus casei and Streptococcus thermophilus in the ratio of 0.6-1.2:0.2-0.8:0.6-1.2; fermenting at 30-40 DEG C for 36-96 hours; regulating the sugar degree of yellow peach juice after fermentation to 5-20% and pH value to 3-6; the filling by aseptic equipment, and refrigerating for storage. The invention is characterized in that the microbial fermentation method is combined with biological enzymatic hydrolysis wall breaking technology to prepare fresh yellow peach into fermented yellow peach clear juice beverage. The product is rich in probiotics, high in nutrition and activity and good in flavor. The production method is safe and efficient, makes full use of abundant resources of yellow peach, and provides a new way for the deep processing of yellow peach and value transformation.

The invention discloses a microbial preparation method of strontium carbonate. The method comprises the following steps: adjusting pH value of a FeCl3 solution to 10-12 by the use of a NaOH aqueous solution at normal temperature by a titration method so as to carry out a precipitation reaction, centrifuging a mixed liquor, removing a supernatant, washing a precipitate with deionized water, and centrifuging to obtain hydrated iron oxide; preparing a reaction liquid containing strontium nitrate, sodium bicarbonate, sodium lactate and hydrated iron oxide by using water as a solvent, inoculating a culture solution which undergoes enlarge culture and contains iron-reducing bacteria to the above reaction liquid, and carrying out an anaerobic reaction at 20-50 DEG C for 2-5d to obtain a solution containing a strontium carbonate precipitate; standing for 1h, filtering, removing a supernatant, washing a white precipitate successively by using distilled water and absolute ethyl alcohol in turns, and drying to prepare a high-purity strontium carbonate powder. By wet-process one-step synthesis, the strontium carbonate powder in different granular sizes and shapes can be prepared, satisfying different purposes.

The invention discloses a dry grinding and dry concentration method for magnetic minerals. The method comprises the following steps: crushing and enriching ore, conveying the obtained iron ore into a grinding head elevator, elevating to a grinding head bin, and delivering the iron ore into a coarse grinding bin of a dry-process central discharge ball mill for coarse grinding; elevating iron ore powder obtained through coarse grinding into a rotary powder concentrator by using a circulating elevator, and grading the iron ore powder; and conveying fine powder obtained in the rotary powder concentrator into a combined pneumatic magnetic separator, finely sorting, discharging the obtained concentration powder through a discharge hole of the combined pneumatic magnetic separator and conveying the obtained concentration powder to a finished product warehouse for storage, and collecting rest tailings by using a dust remover and conveying the tailings to a tailing site. The dry grinding and dry concentration method can overcome defects of low product quality, high production cost, low sorting efficiency, narrow application range and the like in the prior art to have the advantages of high product quality, low production cost, high sorting efficiency and wide application range.

The invention relates to a concentration method for salt-containing wastewater and a recycling method for salt-containing wastewater method. The recycling method comprises the following steps: (1) pretreatment; (2) reverse osmosis treatment; (3) biochemical treatment; (4) electrodialytic concentration; and (5) cyclic crystallization. Compared with the prior art, the recycling method for salt-containing wastewater provided by the invention realizes recycling and zero discharge of wastewater, improves the quality and recovery rate of salt, and achieves recycling of wastewater and comprehensive utilization of crystalline salt; a biochemical unit further removes COD and nitrate ions and reduces difficulties in salt separation; a membrane treatment unit is stable in process, long in operation cycle and low in cost; and the method has good economical performance.

The invention discloses a concentration method for floatation tailings and a concentration device; the concentration method comprises the following steps: coal slime water enters a tailing thickener through a feeding tube; a flocculating agent is mixed in coal slime ash through a flocculating agent dosing tube which is communicated with the feeding tube; the coal slime ash mixed with the flocculating agent is concentrated and cleared in the tailing thickener; a flocculating agent dosing point is arranged at the front edge of the tailing thickener; before the flocculating agent is mixed in the coal slime ash, a coagulating agent is mixed in the coal slime ash by a coagulating agent dosing tube communicated with the feeding tube; a coagulating agent dosing point is arranged in front of the flocculating agent dosing point by L meter; L=10*(Q / X) / (3.14*R2*3600), wherein Q is coal slime water flow, the unit of which is m<3> / h; X is the number of the feeding tubes; R is the radius of each feeding tube, the unit of which is m. The concentration method uses the time difference (10s) of the addition of the coagulating agent and the flocculating agent to lead the floatation tailing to be absorbed on few, scores of or even more group particles under the action of the flocculating agent; and mineral grains are connected together under the bridging action to form big loose and porous flocculus.

The invention discloses a rotary-distribution and membrane flash specific gravity differential concentration method, relating to a concentration method. The invention aims at solving the problems of high steam energy consumption, easy damage of heat-labile components, and froth over caused by difficult separation of liquid from steam in the traditional concentration method. The method comprises the following steps: 1, an evaporating tank is vacuumized through a vacuumizing hole; 2, a distributing device is started to simultaneously introduce steam into second steam inlets of two intermediate jackets, a first steam inlet of an outer jacket and a third steam inlet of a bottom jacket; 3, a total feeding valve and a branch feeding valve are opened, a feed solution enters in the distributing device, the distributing device distributes the feed solution onto the walls of the intermediate jackets, the outer jacket and the bottom jacket for rapid evaporation, i.e. the feed solution is concentrated; and 4, the concentrated feed solution enters a density measurer under the action of gravity through an outlet at the bottom of the evaporating tank, and enters a collecting tank after the density of the concentrated feed solution is detected. The invention is used for concentrating the feed solution.

The invention discloses a traditional Chinese medicine Liandan anti-inflammatory tablet as well as a preparation method and a quality control method thereof. The traditional Chinese medicine compound preparation consists of two traditional Chinese medicines, namely quassia and common andrographis herb and is prepared by adding a proper amount of auxiliary materials. The preparation method comprises the following steps: treating with alcohol in advance, concentrating and drying the obtained cream for granulation, adding an auxiliary material for tabletting, wherein the weight of each tablet is 0.23g, and performing sub-package and outer package after coating. According to the quality control method, a microbial limit verification method is established. Compared with the original preparation technology and quality standard, the preparation method has the advantages that specific parameters of the addition times amount during ethanol extraction are researched and optimized; the weight of the tablets is analyzed, and the accuracy of taking the medicine by a patient is improved; moreover, the microbial verification method is established through the experiment. The tablet prepared by the method has the advantages of high safety, good curative effect, low production cost and the like.

The invention discloses a circular concentration method for treating dilute nitric acid produced by nitrotoluene waste sulfuric acid. The circular concentration method comprises a start-up phase and aproduction stage, wherein the production stage comprises the following steps: cooling 15%-40% low concentration dilute nitric acid produced from a denitration condenser for waste sulfuric acid treatment, and mixing the dilute nitric acid with concentrated nitric acid with a mass friction higher than or equal to 50% until the density of the mixture is larger than that of nitrotoluene; separating free nitrotoluene liquid, and concentrating by virtue of a nitrogen oxide compressor unit until the concentration is higher than or equal to 50%; applying a part of concentrated sulfuric acid with theconcentration higher than or equal to 50% to subsequent density adjustment, and discharging the other part into a finished product tank region; and compressing and absorbing nitrogen oxide gas by virtue of a nitrogen oxide compressor, absorbing nitrogen oxide gas by virtue of a nitrogen oxide absorbing tower, and discharging until nitrogen oxide gas reaches the standards. The circular concentration method is applicable to the separation and concentration of nitrotoluene in low-concentration dilute nitric acid with middle in the treatment of waste sulfuric acid, so that the use value of low-value dilute nitric acid is increased, the production balancing problem of dilute nitric acid is well solved, and the treatment economy of waste sulfuric acid is increased.

The invention discloses a method for extracting walnut health care grease by a microbial fermentation method. According to the method, ingredients such as protein and cellulose in the walnut kernels are decomposed by a microbial fermentation method; the goal of enriching the health care grease is finally achieved. After the water is added into the walnut kernels for pulping; yeast richly containing various microbes is added for fermentation, so that the protein in the walnut kernels is decomposed into amino acid; carbohydrate provides energy sources required by microbial fermentation; oil-water fermentation liquid richly containing the walnut health care grease is finally obtained; a cell crushing instrument is used for crushing and emulsification; then, through centrifugation filtering, walnut health care grease crude oil is obtained; then through refining, the walnut health care grease is obtained. The substances such as protein, sugar and cellulose in the walnut kernels are degradedby microbes; oil-water emulsion richly containing walnut health care grease is obtained; after the refining, the pure natural walnut health care grease which richly contains amino acid, has special flavor and does not have residue organic solvents can be obtained.

The invention relates to a method for preparing candied longans based on a microbial fermentation method. According to the method disclosed by the invention, appropriate fermentative strains are used, and longans are used as a fermentative raw material, so that the candied longans based on a biological fermentation production technology are obtained. The candied longans are healthy in material selection, do not contain a food additive basically, are long in quality guarantee period and are an ideal health-care product or food.

The invention discloses a preparation method of peony seed meal wine. The peony seed meal is sufficiently utilized with a microbial fermentation method, alcohol production with yeast and extraction of active substances in peony seeds are completed synchronously, the production cost is greatly reduced, and the peony seed meal resource is reused. The peony seed meal wine has unique aroma and contains higher polyphenol and flavone, thereby having the health care functions of scavenging free radical and delaying senescence, and huge social and economic benefits can be obtained after industrial production.

A method for manufacturing a solid carbon dioxide absorbent, comprises the steps of: (1) mixing (a) 10-80% by weight of fibroid material capable of resisting high temperature more than 100 DEG C, (b) 10-80% by weight of porous inorganic material, (c) 5-20% by weight of organic-inorganic binder, to make paper; (2) after forming the paper into a single-faced corrugated preform, winding the preform to manufacture a cylindrical honeybee preform; (3) cooling after dipping the honeybee preform in a solution dissolved with the carbon dioxide absorbing material; and (4) cooling after calcining the honeybee preform carrying the carbon dioxide absorbing material. When carbon dioxide in waste gas is removed by the solid carbon dioxide absorbent manufactured by the method, an absorbent broken phenomenon or process pressure reduction caused by air flow does not occur. A stable dry type carbon dioxide absorption and separation concentration processes capable of saving device cost and operation cost can be implemented without filtration or periodic supplement of concentrated carbon dioxide by simplifying the processes.

A preparation method of corn starch. The method includes the steps of: soaking niblets; crushing the soaked niblets; separating out germs; grinding niblet tissues containing corn bran and endosperm after degerming; separating out fiber; separating the obtained crude starch milk to obtain gluten water and starch milk; and washing the starch milk. A treatment method of gluten water comprises concentration of the gluten water. The concentration method of gluten water includes the steps of: (1) carrying out a first condensation on gluten water to obtain a first concentrated phase, wherein conditions of the first condensation enable an obtained first water phase to contain less than 0.3 wt% of solid containing protein; and (2) carrying out a second condensation on the first concentrated phase to obtain a second concentrated phase and a second water phase, wherein conditions of the second condensation enable the second concentrated phase to contain more than 10 wt% of solid containing protein. The second concentrated phase obtained by the method of the invention has similar or higher concentration compared with that of a concentrate obtained by a prior art; and water quality of the obtained first water phase is superior.

The invention discloses a botanical pesticide for wilt control. The preparation method of the botanical pesticide includes: mixing 1-2% by volume of trehalose, 0.1-0.6% by volume of chitosan and the balance Chinese medicinal components uniformly to obtain an active mixed medium containing traditional Chinese medicines; inoculating a compound microbial strain into the active mixed medium containingtraditional Chinese medicines for fermentation culture until the microbial concentration reaches 4 billion plants / ml, thus obtaining the botanical pesticide for wilt control. The Chinese medicinal components include: sophora flavescens, sweet wormwood herb, elephantopus tomentosus, honeysuckle, andrographis paniculata, cortex dictamni and fructus kochiae. The botanical pesticide provided by the invention can achieve effective control of wilt without pollution.

The invention discloses a biosynthesis preparation method of (R)-3-hydroxyalkanoate as a chiral pharmaceutical intermediate. The (R)-3-hydroxyalkanoate has a general formula shown in the patent specification. The biosynthesis preparation method comprises preparing poly(R)-3-hydroxyalkanoate by a microbial fermentation method, synthesizing a homopolymer or a co-polymer of the poly(R)-3-hydroxyalkanoate from different matrixes by a change of a carbon source, and directly preparing the (R)-3-hydroxyalkanoate from the poly(R)-3-hydroxyalkanoate by an alcoholysis-esterification method. The biosynthesis preparation method solves the problem that the traditional chemical method and the chiral separation method for producing the (R)-3-hydroxyalkanoate have defects of high costs, low purity and low chirality and cannot be industrialized, and provides a high-efficiency and low-cost production approach.

The invention discloses a re-concentration method for hematite combined tailings. The re-concentration method comprises the following steps: recycling original tailings, recycling iron minerals, splitting flow through a cyclone, grinding minerals by a tower mill, carrying out low-intensity magnetic separation, carrying out high-intensity magnetic separation, sorting through a spiral chute and sorting through a shaking table. The re-concentration method is simple in process and is low in production cost; iron concentrates are high in grade and recovery rate, so that effective recovery of hematite combined tailings is realized, mineral resources are sufficiently utilized, metal waste and loss is reduced, and remarkable economic benefits are achieved.

The embodiment of the invention provides a landfill leachate membrane concentrated solution evaporation and concentration method and system. The method comprises the following steps: carrying out primary evaporation and concentration on the landfill leachate membrane concentrated solution; discharging the landfill leachate membrane concentrated solution, which is evaporated and concentrated for the first time, into a flash tank device for flash evaporation and concentration until inorganic salt in the landfill leachate membrane concentrated solution is crystallized, wherein the flash tank device employs a closed-loop evaporation process to carry out flash concentration. According to the invention, a forced circulation and flash evaporation closed-loop evaporation process is adopted for concentration of the landfill leachate membrane concentrated solution; in the evaporation process, after the landfill leachate film concentrated solution is heated by the preheating equipment, a temperature difference exists between the landfill leachate film concentrated solution and the flash tank, so that a flash evaporation process is formed, the problem of pipe blockage of a shell-and-tube heatexchanger in the landfill leachate concentration process is completely avoided, and the tank brushing period is prolonged to the maximum extent.

The invention relates to a pre-concentration method of low-grade vanadium titano-magnetite. According to the technical scheme, raw ore of the low-grade vanadium titano-magnetite is broken till the particle size is not larger than 3mm, first-stage high intensity magnetic separation is carried out under the condition of magnetic field intensity being 0.6-1.2T, and first-stage high intensity magnetic-separation concentrate and tailings are obtained; the first-stage high intensity magnetic-separation concentrate is then ground till powders with the particle size being less than 0.074mm account for50-80 wt%, and ore grinding products are obtained; the ore grinding products are subjected to first-stage low intensity magnetic separation under the condition of the magnetic field intensity being 0.08-0.20T, and low intensity magnetic-separation concentrate and low intensity magnetic-separation tailings are obtained; the low intensity magnetic-separation tailings are subjected to separation ina chute, and gravity concentrate and tailings are obtained; and the gravity concentrate is subjected to second-stage high intensity magnetic separation under the condition of the magnetic field intensity being 0.4-0.8T, and second-stage high intensity magnetic-separation concentrate and tailings are obtained. The pre-concentration method of the low-grade vanadium titano-magnetite has the characteristics of being outstanding in ore processing capacity reduction, high in concentration ratio and low in cost.

The invention provides forage mulberry, a microbial fermentation method, a mutton sheep concentrate supplement and a preparation method. The microbial fermentation method of the forage mulberry comprises the following steps that: S1, the forage mulberry is dried until the water content is 30 to 35 percent, and is crushed to pass through a 40-mesh sieve; then, 0.5 to 1 percent of cellulose compoundenzyme is sprayed on 99 to 99.5 percent of the forage mulberry; uniform mixing is performed; placement is performed for 3 days under the condition of 35 to 45 DEG C; a forage mulberry cellulose enzymolysis pretreatment material is obtained; S2, 5 to 10 percent of corn shorts and 1 to 2 percent of molasses are added into 86 to 93 percent of the forage mulberry cellulose enzymolysis pretreatment material prepared according to step S1; the pH is regulated to be 6.5 to 7.5; 1 to 2 percent of a mixed bacteria solution is sprayed in a mist spray way; under the condition that the temperature is 35 to 40 DEG C, compaction is performed, and closed fermentation is performed for 5 to 7 days; first fermented forage mulberry is obtained. Compared with forage mulberry in the prior art, the forage mulberry provided by the invention has the advantages that the content of crude fibers is reduced; the content of crude protein is increased.

The invention discloses an albite concentration method, and relates to the technical field of albite processing. The method comprises the following steps of raw ore cleaning, screening, smashing, oregrinding, micro-organism processing, flotation and dewatering. The micro-organisms are brevibacterium flavum and bacillus licheniformis. In the floating step, water is added into ore sand after deironing to produce ore pulp with concentration of 35-45%, the pH of the ore pulp is adjusted to be 1-2, an agentia of 3-5% is added for stirring until bubbling appears, foam is scraped out, and dewateringis conducted until water content is no more than 15%. The agentia comprises an aloe extract, an eucalyptus leaf extract, citric acid and an N-dialkyl double quaternary ammonium salt. Iron titanium impurities and black mica in the albite can be effectively removed, and magnesium oxide can be further removed. Albite powder with high whiteness, low iron, low titanium, low mica and high quality can be produced. The adopted floating agentia is environmentally friendly, and is non-toxic and pollution-free. The whiteness of the obtained albite powder is more than 61, and the method is better than atraditional method.

The invention provides a suction filtration / concentration method which comprises a sludge supply stage in which sludge is supplied to a filtration / concentration tank, a filtration / concentration stage in which the supplied sludge is concentrated by filtration within the filtration / concentration tank, a thick-sludge separation stage in which the thick sludge obtained by the filtration / concentration is separated from the outer surface of the filter cloth, and a thick-sludge discharge stage in which the separated thick sludge is discharged outside the filtration / concentration tank, wherein the filtration / concentration stage involves a step in which the thick sludge is adhered to the outer surface of the filter cloth by continuously performing suction at a given suction pressure that enables the thick sludge to retain the shape thereof even when separated in unconcentrated sludge, and the thick-sludge separation stage involves a step in which water is continuously and forcedly sent to the filter cloth via the filtration chamber over a given period to thereby separate, in the supplied unconcentrated sludge, the thick sludge (filter cake) adherent to the outer surface of the filter cloth. A suction filtration / concentration device is provided.

The invention relates to a biosynthesis method of ethyl vanillin. The biosynthesis method comprises the steps of inoculating strains containing mandelic acid dehydrogenase genes and escherichia coli BL21(DE3) with plasmids pET30a-md1B into a fermentation medium, adding an inducer and then 3-ethoxy-4-hydroxy mandelic acid into the fermentation medium, and fermenting to obtain fermentation liquor of 3-ethoxy-4-hydroxy benzoylformic acid; and inoculating strains containing benzoylformic acid decarboxylase genes into fermentation supernate, and fermenting to obtain fermentation liquor containing the ethyl vanillin, wherein the strains are pseudomonas putida or pseudomonas aeruginosa with the preservation number being ATCC (American Type Culture Collection) 12633. The biosynthesis method provides a path for synthesizing the ethyl vanillin through a microbial fermentation method for the first time, has the advantages of being mild in reaction condition, low in environment pollution, simple and convenient to operate and the like, and is a novel ethyl vanillin synthesis method.

Belongings to the field of environmental protection, the invention in particular relates to a decoration sewage treatment method. According to the decoration sewage treatment method provided by the invention, the liquid and solid of decoration sewage are treated separately, a microbial fermentation method is utilized to greatly reduce the formaldehyde content of decoration sewage and further decompose solid in the decoration sewage, and finally harmless treatment is carried out on the decoration sewage to reduce environmental pollution of decoration sewage.