157results about How to "Mature technology" patented technology

The invention provides a method for quickly detecting melamine in a milk sample based on nanogold, which aims to solve the problems of the high operation requirement, complex detection process, high cost, long time, incapacity of meeting a lot of food test requirements and the like on the detection of the melamine. The method comprises the following steps: performing pretreatment on the milk sample and adding the pretreated milk sample into a nanogold solution; and adopting visual colorimetry to compare the color of the nanogold added with the sample solution with the color in a color standard series and then qualitatively judging whether the milk contains the melamine or not. The color standard series is prepared through the following steps: adding the pretreated milk samples in an identical volume and containing the melamine of different concentrations into the nanogold solution, wherein the content of the nanogold in each sample is consistent; and after color development reaction, obtaining the color standard series. The method has the advantages of low cost, simple and convenient operation and capacity of visually and quickly detecting the melamine in the milk.

The invention relates to method for hoisting a large-size workpiece in an ordinary plant and hydraulic jacking equipment thereof. The invention is characterized in that hydraulic lifting devices of a hydraulic jacking system are erected above hydraulic jacking towers through a hoisting beam; the equipment is lifted to a platform height by the hydraulic lifting devices and then sent above a foundation, and the jacking towers are lowered to enable the equipment to take place; a hook used in the combined hoisting beam is connected with a hook beam through a two-way pin shaft, and the hook can rotate to realize rotating operations of a stator. The hydraulic jacking equipment comprises four hydraulic jacking towers, four hydraulic lifting devices, the combined hoisting beam, two tracks and a control board, wherein the four hydraulic jacking towers are respectively arranged above the two tracks to form a framework structure; sectional telescopic mechanisms are arranged in the hydraulic jacking towers, and telescopic control ends of the sectional telescopic mechanisms are connected with an output end of a hydraulic drive mechanism; the lower parts of the hydraulic jacking towers are provided with travelling wheels; and drive input ends of the travelling wheels are connected with a drive output end of a motor. The invention organically combines the hydraulic jacking system with a working principle integrating machines, electricity and liquid and has the characteristics of stable action, safety, reliability, large hoisting weight, convenient mounting and dismounting and obvious economic benefit.

The invention relates to the technical field of measurement of nonmetallic inclusion, and in particular relates to a method for measuring nonmetallic inclusion in steel. The method comprises the following steps of: (1) sampling; (2) embedding; (3) grinding; (4) polishing; (5) cleaning; (6) corroding; and (7) carrying out microscopic metallurgic detection. The method for detecting the nonmetallic inclusion has the advantages of simplicity in operation, mature process and high measurement accuracy of the inclusion, and can meet the using requirements of most manufacturers in China.

The invention discloses a method of separating and purifying erythritol from fermentation liquid, comprising the steps of separating fermentation liquid cell, clarifying and primary purifying the fermentation liquid; decoloring and purifying the fermentation liquid, concentrating and crystallizing the fermentation liquid, crystallizing again for manufacturing the purified product of the erythritol etc. The method of the invention adopts a dish type centrifuge to separate the cell and uses a ceramic film to remove the impurity with quite large molecular weight such as protein etc.; the nano-filtration separation is firstly introduced into the separation and purification of the erythritol, which can dispense with the working procedures of decoloring, ion exchanging etc.; the pollution discharge quantity is reduced greatly, and at the same time the invention ensures the quality and improves the yield of the product. The purity of the erythritol product HPLC obtained by the method of the invention is more thatn 99.5 percent.

The invention discloses a GLP-1 derivant, which is characterized in that the molecular structural formula of the derivant is any one of the following structural formulas: aGLP-1(7-36), namely Seq ID No.2; aGLP-1(7-37), namely Seq ID No.3; or aGLP-1(7-38), namely Seq ID No.4. The invention also discloses a preparation method for the GLP-1 derivant by solid phase chemosynthesis and the application in preparing drugs for curing diabetes.

The invention relates to a method for connecting a convertor station into a multiport flexible direct current transmission system in a live manner, and pertains to the technical field of power electronics. According to the method, with the help of the structure characteristics of the flexible direct current transmission system itself, and through the characteristic that a disconnecting switch can be used to open and close a small-load current or a capacitive current, by appropriately reducing the flexible direct current system direct-current voltage, positive and negative electrode direct-current disconnecting switches are closed successively to realize the multiport flexible direct current transmission system live connection function. According to the invention, through the structure of the flexible direct current transmission system itself and the simple successive operation of the disconnecting switches, the multiport flexible direct-current transmission system live connection problem in the condition that a direct-current circuit breaker cannot be popularize and applied can be solved, advantages of mature technology, reliable operation, easy implementation and excellent performance can be realized, and the method can be applied into actual multiport flexible direct-current transmission projects.

The invention relates to a method for producing ethyl acetate by reaction rectification and pervaporation coupling. The method is as follows: raw materials, namely acetic acid and ethanol are catalyzed in a reaction rectification tower and rectified, an organic phase is separated out from the distillate at the top of the tower and passes through a pervaporation permeable film component, wherein the contained water and ethanol selectively permeate the film and then enrich on the permeable side of the film to be removed; the ethyl acetate is obtained from the non-permeable side of the film; and part of the ethyl acetate as dehydrating agent is returned to the reaction rectification tower while the rest as a product is extracted; at the same time, part of liquor extracted from the tower bottom of the reaction rectification tower is introduced into another pervaporation permeable film component, the contained moisture is enriched on the permeable side of the film to be separated and removed, the ethyl acetate is obtained from the non-permeable side of the film, and the ethyl acetate is circularly returned to an acetic acid feeding hole of the reaction rectification tower. Compared with the prior art, the method can reduce reflux ratio greatly, has the advantages of simple technical route, energy saving, environmental protection and compact device, and reduces equipment investment and production cost for the ethyl acetate remarkably.

An automatic continuous kneading apparatus for preparing tea leaves is composed of machine frame, two or more kneading units serially arranged on said machine frame and consisting of kneading pot, kneading tray and pressing module composed of motor and force measuring device, reciprocating feeder with controllable feeding gate, and automatic belt conveyer under the discharge gates of said kneading trays for discharging the kneaded tea leaves.

The invention discloses a fast book scanner and an operating method thereof. The scanner comprises a base, two supporting plates, a shooting device and a height-adjustable support, wherein the two supporting plates are arranged opposite to each other and are used for supporting books. The supporting plates are located on the upper surface of the base, the edges of the supporting plates are movably connected with the base through pivots, and an included angle for containing a book to be scanned is formed between the supporting plates. The shooting device is provided with double camera lenses, and an included angle is formed between the camera lenses. The scanning area of each camera lens is the surface area of the corresponding supporting plate. When the fast book scanner works, the book is opened and placed at the position of the included angle formed between the supporting plates, and two adjacent pages of the book are located on the two supporting plates. The included angle between the two supporting plates is adjusted to enable the double camera lenses of the shooting device to be aligned with the opened pages of the book respectively, pictures of the pages are taken, and scanning is achieved.

The invention discloses a high-efficiency grating coupler based on an intermediate-refractive-index waveguide material. The specific structure is a substrate, a lower cladding layer, an intermediate-refractive-index material layer, an insulating layer, an amorphous silicon grating, and an upper cladding layer from bottom to top. The invention also discloses a preparation method of the high-efficiency grating coupler based on the intermediate-refractive-index waveguide material. The method comprises the following steps of: first preparing a waveguide lower cladding layer and the intermediate-refractive-index material layer on the substrate; implementing a waveguide device in the intermediate-refractive-index material layer; growing an insulating layer and amorphous silicon on a surface of asample; transferring a grating structure to an electron beam glue or a photoresist layer by an electron beam or an ultraviolet exposure, and forming a grating pattern after development; and then transferring the grating structure to the amorphous silicon grating by an etching process; and finally, removing the electron beam glue or the photoresist layer, and growing the upper cladding layer. Theinvention has the advantages of simpler process steps, lower cost and higher tolerance of errors.

An innocent treatment method for leaded glass of a abandoned cathode ray tube comprises the following steps: 1) washing and drying CRT cone glass, carrying out coarse crushing on the CRT cone glass to form particles, and placing the particles into a ball mill; 2) adding reducing agents and alkaline additives, carrying out activation on ball mill machinery for 4-6h to obtain mixed materials; 3) placing the mixed materials in a smelter to be roasted for 1h under the condition of the temperature of 900 DEG C to 1000 DEG C and nitrogen gas to obtain glass with lead content smaller than 2% on the upper layer of the ball mill and highly purified metallic lead on the bottom portion of the ball mill, and carrying out breaking and separation after the glass and the metallic lead are cooled. The innocent treatment method for the leaded glass of the abandoned cathode ray tube has the advantages that the high-energy ball mill is adopted as mechanical activation equipment, is high in activation efficiency, and can effectively reduce the reduction temperature of the CRT cone glass; the lead in the cone glass can be effectively recovered, and environmental pollution is reduced; the separated metallic metal and lead-free glass can be reused; the method is simple in process, convenient to operate, free of secondary pollution, easy to apply, and suitable for large-scale industrial production.

The invention relates to a p-type electric-conducting Sb mixed SnO2 film and a stannic oxide homogeneous pn junction containing film and preparation methods thereof. The p-type electric-conducting Sb mixed SnO2 film is prepared by adopting Sb mixed SnO2 ceramic target on single crystal and quartz glass in a magnetron sputtering method. The stannic oxide homogeneous pn junction is prepared by sputtering and depositing an n-type Sb mixed SnO2 film on the p-type electric-conducting Sb mixed SnO2 film. The p-type electric-conducting Sb mixed SnO2 film is stable in electric conductivity, has high hole concentration, hole mobility and specific conductance and has high transparency in visible light, wherein hole concentration is as high as 1020cm-3 order of magnitudes, specific conductance is 60S.cm-1, and hole mobility is as high as 2-30cm<2>V-1s-1. The preparation methods are simple in process and good in repeatability, can be industrialized easily, and the prepared homogeneous stannic oxide based transparent pn junction has volt-ampere curve characteristics of wide bandgap semiconductor pn junction.

The invention relates to a losartan potassium hydrochlorothiazide tablet and a preparation method thereof. The losartan potassium hydrochlorothiazide tablet comprises a tablet core and a film coating layer and is characterized in that the tablet core consists of losartan potassium and hydrochlorothiazide which are respectively mixed with available pharmaceutic adjuvants, wherein the pharmaceutic adjuvants include microcrystalline cellulose, crosslinked sodium carboxymethylcellulose, pregelatinized starch, lactose, polyvinylpyrrolidone, starch, magnesium stearate and talcum powder. After the adoption of a separate pelletizing process for uniform mixing, tabletting is carried out, therefore relatively low dissolution rate which is caused by the medicinal interaction during once pelletizing can be avoided, in-vitro dissolution rate can be greatly improved, and then the bioavailability can be improved.

The invention discloses a yellow-green light strongly excitable molybdate red fluorescent material and a preparation method thereof. The yellow-green light strongly excitable molybdate red fluorescent material has a scheelite type tetragonalcrystal structure, and the chemical formula of the material is AY0.5Eu0.5(MoO4)2, wherein A may be Li, Na or K. The light emitting material has the highest excitation strength when the wavelength is 530 to 545 nanometers, and the material belongs to a yellow-green light excitable red fluorescent material. The preparation method is a solid phase method or sol-gel method. The powdered molybdate red fluorescent material is mixed with yellow powder YAG:Ce<3+> or combined with the yellow powder YAG:Ce<3+> layer by layer, and the fluorescent powder layer and a blue light emitting diode (LED) are packaged by the conventional process to form a warm white LED element. The invention has the advantages that: the preparation process is simple and the technology is mature, so industrial production can be realized easily; and due to the addition of the molybdate red fluorescent material, the red component of the emission spectrum of the white LED element is compensated, the related color temperature is reduced to the lowest level, and the increasing requirements of people on light color quality of white light in solid lighting technology are met.

The photoelectric detection circuit for single photon counting instrument includes one photo detector for receiving photons and outputting electric signal; one pre-amplifier for amplifying the electric signal the photo detector outputs; one voltage comparator for cutting off the noise signal and converting the analog signal over certain level into electric pulse signal; and one counter for counting the electric pulses within certain time interval and outputting the counting number. The photoelectric detection circuit features its low-pass filter for low-pass filtering the electric signal the pre-amplifier outputs to output one DC signal, and the DC amplifier for amplifying the DC signal the low-pass filter outputs to output one current average value.

The invention discloses a gravity energy storage system utilizing the ocean depth drop. The system comprises a single point mooring device fixed to the plane of a seabed, a large floating body, a plurality of standard weights and a control system, wherein the standard weights are stacked on the large floating body and the plane of the seabed; at least two sets of evenly distributed electric power lifting and power generating devices, a stacking device and the control system are arranged on the large floating body; a seabed operation robot without a cable is arranged on the plane of the seabed, the control system is used for remotely controlling the seabed operation robot, and the standard weights are carried in cooperation with the electric power lifting and power generating devices. Through the altitude difference between the sea surface and the seabed, the standard weights are lifted in a mechanical movement mode to achieve electric power storage, the problems that in the prior art, the system is too complicated, the safety coefficient is not high, and cost is high are effectively solved, and the system is particularly suitable for being implemented in the area with the depth of thousands of meters and the seabed flat.

The invention discloses an online centralized monitoring system for distributed power distribution rooms, comprising a control device, a detection device, a video device, a field bus, a principal computer, a transmission device and a centralized monitoring device. The detection device and the control device are connected with the principal computer through the field bus. The principal computer and the video device are connected with the transmission device. The transmission device is in signal connection with the centralized monitoring device. The centralized monitoring device comprises a cloud server, an SCADA server, a GIS server and a video server. The centralized monitoring device integrates received data information of the SCADA server and the video server with geographic information in the GIS server, outputs geographic location information, topographic map, electric parameters, operation condition, environment parameters and intuitive video information of distributed power distribution rooms, and performs organic integration so as to achieve all-round monitoring on the power distribution rooms. The cloud server cloud-stores all the information and applies the information to cloud sharing, multi-terminal control, data backup, and other network applications. Thus, the system is made networked and intelligent.

The invention provides a silicon-based optical wave guide temperature sensor based on a Mach-Zehnder structure, realizing temperature sensing by utilizing the sensitivity of a transmission spectrum thereof to temperature. The silicon-based optical wave guide temperature sensor comprises a laser, a Y-shaped wave guide, a first power meter, a Mach-Zehnder wave guide structure and a second power meter, wherein one end of the Y-shaped wave guide is an incident wave guide, a first positive cone is arranged at one end of the incident wave guide and is connected with the laser through optical fibers, the other two ends of the Y-shaped wave guide are respectively a reference arm wave guide and a sensing arm wave guide, a second positive cone is arranged at one end of the reference arm wave guide of the Y-shaped wave guide, and a third positive cone is arranged at one end of the sensing arm wave guide of the Y-shaped wave guide; the first power meter is connected with the second positive cone through optical fibers; the Mach-Zehnder wave guide structure is connected in the middle of the sensing arm wave guide; and the second power meter is connected with the third positive cone of the sensing arm wave guide through optical fibers.

The invention is a manufacturing method for a kind of silicon base micro-machine microwave/radio frequency switch. It includes silicon piece preparation and the first oxidization; photoetching and corroding the silicon dioxide layer, producing preliminary silicon dioxide pier; produces chrome and gold double-metal layer; photoetching the double-metal layer, forms the transmitting lines; produces polyimide sacrificial layer; photoetching and corroding the polyimide sacrificial layer; imidization; positive glue photoetching the image of contacting layer; evaporating chrome-gold double-metal layer; forms the contacting layer; produces silicon nitride suspending beam film; produces and corrodes the aluminum protection layer of silicon nitride; forms the suspending beam; produces the upper pole metal layer; forms the upper poles; forms the space structure of the suspending beam. The process is matured, the cost is low. The switch is the key element in current wireless communication system.

The invention discloses a pasty propellant fuel gas generator ignition device based on a solid rocket engine. The pasty propellant fuel gas generator ignition device comprises a hole plate base, a fuel gas generator combustion chamber and an ignition engine. The two ends of an ignition engine combustion chamber of the ignition engine are fixedly connected with an ignition engine rear base and an ignition engine front cone respectively. An ignition powder column is arranged in the ignition engine combustion chamber. A powder baffle is arranged at the end, close to the ignition engine rear base, of the ignition powder column, and a powder fixing plate is arranged at the other end of the ignition powder column. A powder fixing plate locating base and an ignition powder box are arranged between the powder fixing plate and the ignition engine front cone. Inclined fuel gas nozzles are evenly distributed on the cavity wall between the powder baffle and the ignition engine rear base. The ignition engine and the end face of the hole plate base are coaxially and fixedly connected. The hole plate base is fixed to the propellant inlet end of the fuel gas generator combustion chamber. The ignition engine is located in the fuel gas generator combustion chamber. The pasty propellant fuel gas generator ignition device is simple in structure, simple and reliable in ignition mode and good in ignition effect, and pasty propellant can be fully ignited.

The invention relates to an intelligent home control system, which comprises home electric equipment. The intelligent home control system is characterized in that the intelligent home control system additionally comprises a control terminal, a wireless router and a gateway, the control terminal can transmit control signals for controlling the working states of the home electric equipment; the control terminal is connected with the wireless router through a wireless network; the gateway is connected with the wireless router, the wireless router forwards the control signals transmitted by the control terminal to the gateway, the gateway comprises an MCU (Micro Control Unit) circuit which is used for recognizing and decoding the control signals transmitted by the control terminal, and a first radio-frequency transceiver module which is connected with the MCU circuit and is used for realizing the wireless radio-frequency transmission of the decoded control signals; a second radio-frequency transceiver module which can receive the control signals transmitted by the first radio-frequency transceiver module is installed on the home electric equipment. The entire system is very low in cost and is very economical and applicable.

The invention relates to the field of object tracking, and more specifically, relates to an express tracking and delivering system and an express tracking and delivering method. The system comprises a backstage management module, a two-dimensional code label, and a piece of mobile reading positioning equipment. The two-dimensional code label is used for being affixed to a package, and stores package information. The mobile reading positioning equipment comprises a two-dimensional code reader used for reading a two-dimensional code label, a positioning chip used for positioning a package to acquire positioning information, a data processor used for processing the two-dimensional code label information and the positioning information, and a data transmission module used for transmitting data after processing, wherein the two-dimensional code reader is connected with the positioning chip and the data processor, the positioning chip is connected with the data processor, and the data processor is remotely connected with the backstage management module through the data transmission module. By adopting the system and the method of the invention, the purpose of real-time express tracking can be achieved.

The invention relates to a light differential phase shift keying modulator of direct modulation, wherein a clock signal and a data signal are synchronously input to a high speed electrical and logic gate, which outputs a non-capturing electrical signal to demodulate the distributed feedback type laser, and the distributed feedback type laser works in the high offset position. The larger insulation chatter results in the frequency shift, a DC driving bias is properly adjusted, to drive the signal intensity and the filter characteristic of the filter, which causes the output signal of the narrow band filter to generate a large chatter on the position with lower power, wherein the chatter just generates pi-phase shift, thereby generating the light differential phase shift keying control signal. The invention saves the process of the differential code generated by the traditional differential phase shift keying control signal, which is low in cost, easy in integration, and fast in practicality.

The invention discloses an on-line spreading rate and uniformity detecting device and an on-line spreading rate and uniformity detecting method for reconstituted tobacco. The detecting device comprises a near-infrared moister meter detecting module, a mechanical movement scanning and examining device, reconstituted tobacco flake conveying devices, a main control center and a signal receiving-transmitting receive. A near-infrared spectroscopic detection principle is adopted; a data processing and analysis algorithm is combined; the on-line quick detection of the spreading rate and the uniformity of the reconstituted tobacco is realized. By using the on-line spreading rate and uniformity detecting device and the on-line spreading rate and uniformity detecting method for the reconstituted tobacco, which are provided by the invention, the real-time on-line detection is carried out on the spreading rate and the uniformity of the reconstituted tobacco in a production process; information can be fed back when a detection result does not accord with a production requirement on the uniformity, so as to be convenient for timely adjustment and control; the detection speed is quick; the precision is high; the stability is good; the repeated calibration is not needed.

The invention discloses a method for measuring and calculating a drift angle and deflection of a single crystal plane, and belongs to the technical field of oriented detection on a single crystal material. The prior art needs repeated drift angle orientation on crystals. The method comprises the following steps of 1, measuring diffraction angles of any three points on the same plane of a crystal plane to be measured by an X-ray crystal orientation instrument and marking positions of the measured three points, 2, joining the three points to form a triangle, measuring length of sides of the triangle and calculating interior angles, 3, building a space rectangular coordinate system, 4, building an equation set of known quantity and unknown quantity based on the space rectangular coordinate system, calculating coordinates of the three points and their projection points, and calculating normal vectors of the crystal plane to be measured and an ideal crystal plane, 5, calculating a drift angle of the measured crystal plane relatively to the ideal crystal plane according to a crystal system crystal-plane included-angle formula, and calculating deflection of the measured crystal plane relatively to the ideal crystal plane according to a space two-direction vector included-angle formula, and 6, adjusting a crystal cutting direction according to the drift angle and the deflection, and carrying out one-step cutting to obtain a crystal plane according with crystal orientation.

The invention belongs to the technical field of organic electronic devices, and particularly relates to a method for preparing an organic field effect transistor dielectric layer by using a plasma crosslinking technology. Firstly a gate or a gate and an insulating layer are prepared on a substrate. And then monomer which can be polymerized is activated by the plasma through a plasma enhanced chemical vapor deposition (PECVD) method, and a compact, ultrathin and crosslinking organic matter dielectric layer grows on the gate or the dielectric layer. A semiconductor layer is then prepared on a thin film. Finally a source electrode and a drain electrode are made. The PECVD method is used to achieve mutual crosslinking of organic materials and further the compact and ultrathin dielectric layer with high insulation is prepared. The method is simple and convenient. Flexible electronic devices made of the full organic materials can be realized, and the problem that inorganic materials can not bend is overcome. The thin film with high crosslinking has good insulating property. The preparation of the ultrathin dielectric layer required by the flexible electronic devices can be achieved. Meanwhile the organic materials are not dissolved in general organic solvents, and a full solution method for preparing an organic field effect transistor can be realized.

The construction process of poured pile with steel pipe as wall protecting casing includes the following steps: leveling field and determining pile site, emplacing casing pile machine, emplacing steel pipe, pressing in the first steel casing, checking the verticality, taking soil and butt jointing steel casing, pressing in other steel casings until reaching the designed depth, measuring the hole depth, shifting the casing pile machine and emplacing the pile pouring machine, drilling hole, measuring hole depth, diameter and inclination, cleaning the hole and measuring bottom settling thickness, depositing reinforcing cage, depositing casing, cleaning hole and pouring concrete. The present invention has high pile constructing quality.

A preparation method of silicon-based micro mechanical photomodulator chip comprises: silicon piece preparation and phosphor diffusion; preparing sacrificial layer silicon dioxide film; preparing silicon nitride film; steaming aluminium film; negative photo-etching and corroding aluminium film; etching silicon dioxide film by reacting ion; removing aluminium film; corroding sacrificial layer silicon dioxide film; positive photo-etching; preparing compound metal film; finishing electrode preparation; negative photo-etching; corroding sacrificial layer silicon dioxide film to get suspending section; reacting ion striping. The inventive silicon-based micro mechanical photomodulator chip is a key element from the optical fiber to the communication system.

The invention discloses a dual-purpose double-body sightseeing boat on and under water. The dual-purpose double-body sightseeing boat comprises a main boat body, two sightseeing cabins and stand columns. The two sightseeing cabins are located below the main boat body and are symmetrically distributed along the longitudinal central axis of the main boat body. The sightseeing cabins are connected with the main boat body through the stand columns, and the stand columns are hollow and are provided with elevators for passengers to go between the main boat body and the sightseeing cabins. A main power system and a control facility of the sightseeing boat are arranged on the main boat body, the internal space of the sightseeing boat is large, operation is simple, safety is high, and sightseeing on water and sightseeing under water can be conducted at the same time.

The invention belongs to the technical field of tertiary oil recovery, and in particular, relates to a method for improving a crude oil recovery ratio by using guanidine gum fracturing backflow liquid. The method specifically comprises the following steps that pH of the fracturing backflow liquid is adjusted to 6.5-7.5; then, suspension impurities with particle sizes not less than 50 microns are removed through two-grade filtration; the content of guanidine gum in the fracturing backflow liquid is adjusted to reach the mass concentration of 1.0-1.5%; a nitrogen source and a phosphorus source are synchronously added; the mass concentrations of the nitrogen source and the phosphorus source are respectively 0.2-0.5% and 0.1-0.3% after adding; the fracturing backflow liquid added with the nitrogen source and the phosphorous source is injected in an oil reservoir from a water injection well; and injection allocation of air is performed. The method has the characteristics of simple flows, mature processing unit process, stable whole process and low cost, can realize the reinjection of the fracturing backflow liquid into the oil reservoir, realizes the resource utilization of sewage, and can be widely applied to field tests of improving the crude oil recovery ratio by microorganisms.