113results about How to "Pollution ability" patented technology

The invention provides a crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparing method. The crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparingmethod is characterized by comprising the following steps of 1), desalinating and dewatering crude oil, then heating the crude oil in a heating furnace, and then dividing the heated crude oil into heavy components and light components in a distillation tower at a cut point of 150-300 DEG C; 2) subjecting the light components discharged from the top of the distillation tower, namely a fed light material, and the heavy components discharged from the bottom of the distillation tower, namely a fed heavy material, to contact reaction with high-temperature catalysts under a vapor atmosphere in tworeactors separately. Compared with the prior art, the crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparing method has the advantages of 1) high raw material adaptability,2) high metal contamination resistance of the catalysts, no hydrothermal deactivation and low reagent consumption, 3) lower energy consumption compared with steam cracking, and 4) high per-pass conversion rate and high olefin selectivity.

The invention discloses a novel aluminum-based anti-collapse agent and provides a strong-inhibition and strong-blockage aluminum-based anti-collapse water-based drilling fluid system by combining the performance requirement of drilling fluid based on the novel aluminum-based anti-collapse agent. The strong-inhibition and strong-blockage aluminum-based anti-collapse water-based drilling fluid contains the following substances in parts by weight: 100 parts of fresh water, 4 parts of sodium bentonite, 0.1-1 part of a coating inhibitor, 0.3-5 parts of a strong amine inhibitor, 0.5-5 parts of a filtrate reducer, 0.3-1 part of a thickening agent, 1-5 parts of a lubricating agent and 0.5-5 parts of an efficient aluminum-based blocking agent. The key technique of the invention is to provide use of the aluminum-based anti-collapse agent as a mud rock blocking anti-collapse agent in drilling fluid. After an aluminum-based blockage anti-collapse agent acts with a rock core with same thickness, the time required for transferring differential pressure of 1MPa is substantially shortened in comparison with the time (about 1.5 hours) required for transferring differential pressure in a blank rock core, so that the aluminum-based blockage anti-collapse agent has excellent blockage performance. Compared with the prior art, the strong-inhibition and strong-blockage aluminum-based anti-collapse water-based drilling fluid has the following advantages that (1) an amine inhibitor has prominent inhibition performance, and the hydration dispersion inhibition capacity of shale of the drilling fluid system is strong; (2) the anti-collapse agent has prominent inhibition performance and strong blockage anti-collapse capacity, and the hydration expansion inhibition capacity of shale of the drilling fluid system is strong; (3) the water-based drilling fluid system has relatively good rheological property and strong temperature resistance, salt resistance and calcium and inferior soil pollution resistance; and (4) the system contains less treating agents and is simple to prepare and convenient to maintain.

The invention relates to a safety brake and redundancy control system of a mine hoist. Detection signals of a roller rotation speed sensor and a motor rotation speed sensor are input into a speed redundancy detector, the processed detection signals are input into a speed signal comparer, compared with a command signal, and then input into a speed closed-loop controller, the speed closed-loop controller transmits the signals to a pressure signal comparer and a pressure feed-forward controller, the pressure signal comparer compares a signal of a pressure sensor and an output signal of the speed closed-loop controller, a comparison result is input into the pressure speed closed-loop controller, and a signal of the speed closed-loop controller is input into an adder through a switch to form a control signal of a tee proportional depressurization valve; and when the pressure sensor is cut off, the output signal of the speed closed-loop controller is input into the adder after being processed by the pressure feed-forward controller, and an output signal of the adder controls the tee proportional depressurization valve, so that the braking torque is controlled. The safety brake and redundancy control system is high in control precision and response speed, and the mine hoist can brake at constant retarded velocity.

The invention discloses a cracking catalyst, which contains 10 to 50 weight percent of Y -shaped molecular sieve containing phosphorus and rare earth, 10 to 40 weight percent of an inorganic oxide adhesive and 10 to 70 weight percent of clay. In the Y-shaped molecular sieve containing the phosphorus and the rare earth, the content of rare earth oxide accounts for 12.0 to 16.0 weight percent, and P2O5 accounts for 0.5 to 7.0 weight percent; in a <31>P MAS NMR spectrum of the molecular sieve, peak areas of resonance signals of between -16 and -12 ppm and between -25 and -21 ppm as chemical displacements account for more than 85 percent of the total peak area; and in a <27> Al MAS NMR spectrum of the molecular sieve, the peak area of a resonance signal of between -2 and 2 ppm as the chemical displacement accounts for more than 20 percent of the total peak area. The Y-shaped molecular sieve containing the phosphorus and the rare earth can be obtained by the following steps: a NaY molecular sieve is contacted with an aqueous solution containing rare earth ions and an aqueous solution containing a phosphorus-aluminum modifying agent, then is subject to hydro-thermal treatment, and finally is contacted with an ammonium salt aqueous solution. The cracking catalyst is used for catalytic cracking reactions, and has strong cracking capability of heavy oil, high yield of gasoline, and strong anti-metallic contamination capability.

The invention relates to an ultralow-density oil-base drilling fluid. The invention is characterized in that the ultralow-density oil-base drilling fluid is prepared from the following raw materials: base oil, a density reducer, a suspension stabilizer, an emulsifier, a tackifier, a fluid loss additive, a flow pattern regulator, an alkalinity regulator and a calcium chloride water solution. The base mixed oil is prepared by the following steps: mixing 3# white oil, 5# white oil and natural gas prepared oil, adding a flash point enhancer while stirring, and standing for 0.5-1 hour; and stirring at low speed at the temperature of 30-40 DEG C, and slowly adding oil-soluble nano fumed silica while stirring, wherein the addition process is controlled at 2-3 hours. The ultralow-density oil-base drilling fluid has the advantages of favorable emulsifying stability, favorable rheological properties, high inhibition property for mud shale, high emulsion-breaking voltage, low filter loss, low density (0.75-0.90 g / cm<3>), and high sand carrying and pressure bearing capacities, is beneficial to cleaning the borehole and enhancing the mechanical drilling speed, solves the problem of severe lost circulation in the low-pressure formation and long-section shatter zone formation, and is especially suitable for low-pressure oil gas pools and depletion water-sensitive formations.

The invention discloses a pilot proportional reversing valve, which comprises a main valve body and a pilot control valve arranged on the main valve body, wherein both ends of the main valve body are provided with a left end cover and a right end cover; and a main valve core and a main spring are arranged in the main valve body. The pilot proportional reversing valve is characterized in that: the pilot control valve comprises a pilot valve body and a left and a right proportion electro-magnets arranged at both ends of the pilot valve body; and a proportional reducing valve is arranged between the main valve body and the pilot valve body. The pilot proportional directional valve has the advantages of simplified structure, low cost, reduction of extravasation link, good spring guidance, high reliability and strong capability of resisting oil pollution.

The invention relates to a kaolin product for catalytic cracking catalyst and the process for preparation. The process for preparation comprises the following steps: stirring to evenly mix kaolin raw ore, water and dispersing agent to get slurry, wherein slurry is combined through a hydraulic cyclone in turn to sort to get overflow, bleaching overflow to get pulp, and getting kaolin product for catalytic cracking catalyst after pulp is dewatered. Particle size distribution of kaolin product is that 325order sieve residue <=5ppm, the content which is less than 2um is bigger or equal to 92%, the average partial size is 0.5-0.8um, the composition control of kaolin product is that the content of Al2O3 is bigger or equal to 38%, the content kaolin group mineral is bigger or equal to 90%, wherein the proposition of galapectite and kaolinite is 1.2-2.5:1, the content of harmful impurity is that the content of K2O+Na2O is less than or is equal to 0.6%, and the content of Fe2O3 is less or equal to 0.4%. Catalytic cracking catalyst which is prepared by the invention has the advantages of little specific area, bigger hole volume, excellent antiwear property, strong capabilities of alkali resistant and anti-heavy metal pollution and the like.

The invention provides a method for preparing low-carbon olefin and arene by catalytic cracking of raw oil. The method is characterized by comprising the following steps: 1) after desalting and dewatering, the raw oil enters a heating furnace for heating, then enters a distilling tower to be divided into light components and heavy components, and the cutting point is between 150 DEG C and 300 DEGC; 2) the light components coming from the tower top and the heavy components coming from the tower bottom carry out reaction at different reaction zones of a same reactor; the light components, namely lightweight fed materials, are firstly contacted and react with a high-temperature regeneration catalyst, and then the heavy components, namely heavyweight fed materials are contacted and react withthe catalyst. Compared with the prior art, the method for preparing the low-carbon olefin and arene by catalytic cracking of the raw oil, provided by the invention, has the following advantages: 1) the adaptability of the raw materials is strong; 2) the metal-pollution resistance of the catalyst is strong, and hydrothermal deactivation can not occur, so that the preparation consumption is low; 3)compared with steam cracking, the energy consumption is low; 4) the single-pass conversion ratio is high and the olefin selectivity is high.

The invention relates to a preparation method of a catalytic cracking catalyst. According to the method, the NaY molecular sieve raw powder and halogen-containing gas are contact to perform gas phase ion exchange reaction; the sodium reduction and the ultra-stabilization of the NaY molecular sieve raw powder are completed in one step; the low-sodium high-silica-alumina-ratio molecular sieve is prepared. According to the method, different kinds of clay raw ores are compounded and are treated by high-concentration acid to obtain acid active composite clay; then, the low-sodium high-silica-alumina-ratio molecular sieve, the acid active composite clay, bonding agents, rare earth and decationized water are mixed and pulped; then, spraying granulation is performed; roasting and curing are performed; washing and drying are not needed; a finished product of the catalytic cracking catalyst is obtained. The catalytic cracking catalyst has the advantages that the olefin content in the gasoline can be obviously reduced; the light oil yield is improved; the preparation flow process of the catalyst is short; no ammonia and no nitrogen are discharged.

The invention discloses a system and a method for processing rubbish percolate. The system comprises a collecting pool, a middle pool, a vibrating film nano-filtration device and an evaporation device, wherein the vibrating film nano-filtration device comprises a shell, a diaphragm set and a motor; the diaphragm set downward extends, thereby forming a central driving rod; the motor and a belt areused together for driving an eccentric block on the central driving rod to rotate so as to generate a centrifugal force which can trigger vibration; the diaphragm set is driven to vibrate by energy generated from vibration, with the help of the central driving rod; and a shearing force which is generated by high-frequency vibration is spread in a sine form by the surface of a diaphragm in the diaphragm set, thereby efficiently solving a chocking problem of the diaphragm in the diaphragm set, achieving higher capability of resisting diaphragm pollution, realizing simple and efficient treatmentfor the rubbish percolate and achieving a better treating effect. A recycling system which is composed of the collecting pool, the middle pool and the evaporation device is used for continuously and efficiently separating clean liquid from concentrated liquid. The clean liquid meets the standard and is discharged. The concentrated liquid is evaporated and treated by the evaporation device, thereby achieving the purposes of reducing emission and reducing wastes.

The invention discloses transparent super-hydrophobic coating for preventing calligraphy and painting from being polluted as well as a preparation method and application thereof. The method comprisesthe following steps: adding inorganic nanoparticles into a mixed solution of ethanol and water and uniformly mixing; then adding hybridized siloxane and fluorine-containing siloxane into the obtainedsolution; stirring at room temperature for 10 to 30min; then carrying out ball milling for 4 to 6h by utilizing a ball milling instrument to obtain the super-hydrophobic coating. The transparent super-hydrophobic coating for preventing the calligraphy and painting from being polluted, disclosed by the invention, is used as calligraphy or painting super-hydrophobic coating; the application is as follows: a substrate of the calligraphy or painting is coated with the super-hydrophobic coating and the super-hydrophobic coating is cured at 80 to 150 DEG C to obtain a super-hydrophobic pollution-preventing coating layer. The surface of the coating layer has a very strong beverage pollution, even Chinese ink / ink pollution prevention capability and has a certain high-temperature resisting capability. Meanwhile, the content of silicon dioxide is controlled in a certain range and a very food transparent effect can be realized; the appearance of the calligraphy and painting is not influenced.

The invention discloses a high-density MTC cementing fluid with density between 2.2-2.7g / cm3, of which components and mass ratio are: slag micro-powder of 100 quotient, weighting material of 50-600 quotient, stabilizer of 3-10 quotient, suspending agent of 0.5-5 quotient, drilling fluid of 15-55 quotient, water of 35-130 quotient, dispersant of 3-15 quotient, retarder or coagulator of 0.5-3 quotient, and pH value regulating agent of 1.5-15 quotient. Specific surface area of the slag micro-powder is between 200-800m2 / kg, and iron ore powder of 200 or 325 mesh or mixture of the same are used as the weighting material. The cementing fluid is consistent with drilling fluid, adhesive matter does not formed after mixing, thereby displacement efficiency is increased; capability of resistance to drilling fluid pollution is strong; filtration-reducing material in high-density drilling fluid can be used to control stability of system and reduce cost of system. Advantages of the cementing fluid are: good strength development at high temperature, not brittle fracture at high temperature, and good long-period sealing property.

The present invention provides an energy-saving damping type amplificative valve. Four throttling groove groups are symmetrical with midline of the main valve core 5, the throttling groove groups on two sides of midline comprise a first oil trough 5a, a second oil trough 5b, a third oil trough 5c and a fourth oil trough 5d in pair respectively, the other two throttling groove groups comprise a first oilreturning groove 5e, a second oilreturning groove 5f, a third oilreturning groove 5g and a fourth oilreturning groove 5h in pair respectively, four throttling groove groups form four main valve port respectively with the first oil intake throttling edge 12a, the second oil intake throttling edge 12b, the first oilreturning throttling edge 12c, the second oilreturning throttling edge 12d, the pilot valve throttling grooves 5i on two ends of the main valve core 5 form two pilot valve port with the first pilot valve throttling edge 12e and the second pilot valve throttling edge 12f on two ends of valve body 12 respectively, the first ring groove 5m and the second ring groove 5n are provided on the left of the main valve core 5, an oil guide ring groove 12k are arranged on the corresponding position of the valve body 12, the first unloading edge 12g and the second unloading edge 12h are provided on the valve body 12 corresponding the position of the first ring groove 5m, seven external connection oil ports are provided on the valve body 12.

The invention discloses a purification method for oilfield reinjection water. According to the method, at least one level of membrane filtration treatment is carried out on oilfield produced water through a cellular carrier type inorganic carbon membrane component so as to prepare the reinjection water suitable for low permeability and extra-low permeability oil reservoirs, wherein the filter precision of the membrane component for membrane filtration treatment is 0.001-100mu m. The purification method has high filtration accuracy, the membrane flux of the compound carbon membrane carrier is large, the capacity of the membrane in resisting oil contamination is strong, the integration level of the structure of the membrane core is high, the quality of the prepared reinjection water is stable, and fine filtrated oilfield reinjection water meets the requirement of the reinjection water for the oil reservoirs in low permeability and extra-low permeability block, and meets the A-grade standard of 'recommended index and analysis method for quality of oil reservoir injection water of clastic rock' (SY / T 5329-94).

The invention relates to a low-soil-phase high-density calcium-resistant saturated salt water drilling fluid system. The low-soil-phase high-density calcium-resistant saturated salt water drilling fluid system comprises, by weight, 0.5-1.5% of bentonite, 0.1-0.3% of sodium carbonate, 0.1-0.3% of encapsulating agent, 2-5% of fluid loss agent A, 1-4% of fluid loss agent B, 1-2% of aluminum-based polymer, 0.5-1% of surfactant, 1-5% of sealing anti-collapse agent, 3-7% of potassium chloride, 30-35% of sodium chloride, 0.1-0.5% of sodium hydroxide, 100-200% of weighting materials and 100% of water. The low-soil-phase high-density calcium-resistant saturated salt water drilling fluid system is excellent in calcium resistance; drilling fluid density is adjustable and maximally up to 2.0gcm<-3>; the drilling fluid contains high-density sodium chloride and is effective in suppression of salt-bed dissolution.

The invention relates to a culture medium for artificially cultivating Cordyceps militaris fruit bodies and a preparation method thereof. The ingredients used in the invention include wheat 85-90g, silkworm powder 3-4g, glucose 1-3g, peptone 1-3g, magnesium sulfate 0.1-0.2g, potassium dihydrogenphosphate 0.1-0.25g, triammonium citrate 0.1-0.25g, vitamin B1 0.01-0.03g, and purified water 40-50ml. the preparation method comprises the steps of dissolving the ingredients in water in the weight percentage, and then pouring the dissolved ingredients into a cultivation bottle; putting the wheat and the silkworm into the cultivation bottle according to weight percentage, sealing the cultivation bottle after stirring uniformly; and putting the sealed cultivation bottle in an electric sterilizer, and sterilizing for 3-4 hours on the condition of 121DEG C and 1.05MPa. The culture medium overcomes the disadvantages of low output wild aweto, too high production cost and lower biotransformation rate. The culture medium can ensure that the early development and growth of thalli is quick, the growth vigor of fruit bodies is uniform, the fruit bodies have deep color and are low in cost. Furthermore, through the culture medium, the output of main ingredient cordycepin is improved, and the output of cordycepic acid and cordycepin polysaccharide is also comparatively improved.

The invention relates to a catalytic cracking catalyst containing modified molecular sieve and a preparation method of the catalytic cracking catalyst. The catalytic cracking catalyst with the mass being 100% comprises, 10-55% of modified molecular sieve by dry basis, 10-80% of clay by dry basis, 0-40% of inorganic oxide in terms of its oxide and 5-40% of binder in terms of its oxide. The preparation method of the modified molecular sieve includes: mixing molecular sieve slurry, compound solution containing metal ions of element periodic table IIIB, precipitator and organic complexing agent and / or dispersing agent, stirring under 5-100 DEG C for at least 10 minutes to obtain mixed slurry of molecular sieve and precipitation containing metal of the element periodic table IIIB, drying, and roasting or not to obtain the molecular sieve modified by the elements of the element periodic table IIIB. The catalytic cracking catalyst is good in activity stability and heavy metal pollution resistance.

The invention discloses a recycling system and method of electroplating pretreatment sewage. The system comprises an electroplating pretreatment device, a collecting pool, a vibration membrane ultrafiltration device and a moderate pool, wherein the vibration membrane ultrafiltration device comprises a casing and a membrane unit and a motor which are installed in the casing; and the membrane unit is provided with a center transmission rod which downwardly stretches, thus an eccentric block on the center transmission rod is driven by the motor through a belt to rotate, so that a generated centrifugal force can trigger swing, and energy generated by swing promotes the membrane unit to vibrate through the center transmission rod, thus the silting problem of a membrane in the membrane unit is effectively solved, the capacity of resisting membrane pollution is stronger, sewage is simply and effectively treated, and treatment effect is better; the electroplating pretreatment device, the collecting pool and the moderate pool are coordinated and utilized to constitute a sewage recycling system so as to persistently and effectively separate out a clear liquid and a concentrated liquid; and the clear liquid is input into the moderate pool, subjected to oil removal and then recycled to the electroplating pretreatment device, thereby reducing water use amount and oil-removing powder use amount and achieving the purpose of reducing emission and reducing wastes.

The invention discloses an over-frequency vibrating separator and a separating system. The over-frequency vibrating separator comprises a casing, a membrane set and a motor. A central driving rod is extended from the membrane set and is equipped with an eccentric block and first flange at a lower end thereof; an output terminal of the motor is provided with a second flange which is flexibly connected with the first flange through a belt. Thereby, the motor drives the eccentric block on the central driving rod to conduct eccentric exercise in order to initiate swing, and energy generated from swing promotes vibration of the membrane set through the central driving rod; when a rotating speed of the motor reaches a frequency required by a resonance environment, the vibrating amplitude of themembrane set reaches the maximum, and the shearing force generated by the membrane set transmits in a sine mode through diaphragm surfaces in the membrane set, so as to effectively solve a problem ofdiaphragm stagnation in the membrane set. The over-frequency vibrating separator, a charge pump, a charging cylinder and a filtering hydraulic cylinder form a separating system in order to separate afiltrate continuously and effectively and realize a higher sewage recovery utilization rate; meanwhile, a lot of energy can be saved to bring good economic and social benefits for an enterprise.

The invention provides an oil-in-water drilling fluid with vegetable oil as an internal phase and a preparation method of the oil-in-water drilling fluid. The drilling fluid is prepared from the vegetable oil, water and a treating agent, wherein the volume ratio of the vegetable oil and water is 40:60 to 60:40; the treating agent comprises a main emulsifier, an auxiliary emulsifier, a filtrate loss reducer I, a thickening agent, NaOH, a thickening and shear strength improving agent, and a filtrate loss reducer II; based on 100 ml of vegetable oil and water, the content of the main emulsifier is 2-3.5 g, the content of the auxiliary emulsifier is 1-2.5 g, the content of the filtrate loss reducer I is 1-3.5 g, the content of the thickening agent is 1-1.5 g, the content of NaOH is 0.25-0.3 g, the content of the thickening and shear strength improving agent is 0.1-0.2 g, and the content of the filtrate loss reducer II is 1.5-4 g. The oil-in-water drilling fluid with the vegetable oil as the internal phase, provided by the invention, is stable in performance, high in drilling cutting resistance and clay pollution capacity, safe and environment-friendly, and can be directly discharged.

The invention discloses an oil-based drilling fluid and its preparation method. The waste edible oil oil-based drilling fluid comprises the ingredients of waste edible oil, sulfite, a main emulsifier, an auxiliary emulsifier, organoclay, a filtrate reducer, a wetting agent and a barite; the preparation method of the waste edible oil oil-based drilling fluid comprises the following steps: preparing an oil phase by waste edible oil and sulfite, and then adding the main emulsifier, the auxiliary emulsifier, the organoclay, the filtrate reducer, the wetting agent and barite. The prepared trench oil oil-based drilling fluid takes waste edible oil as a base oil to substitute diesel oil or crude oil, the cost is low, the environment is friendly, the well wall stability is good, the inhibition performance is strong, lubrication performance and rheological performance are excellent, anti-sloughing inhibition performance and high temperature stability are good, construction requirement for the drilling well can be better satisfied, and the oil-based drilling fluid and its preparation method can provide a new approach for using the waste edible oil in the reasonable mode.

The present invention is two-stage method of applying white rot fungus to degrade hard-to-degrade environment pollutant, and belongs to the field of environmental pollutant treating technology. Based on the research of the biochemical characteristic of white rot fungus, the present invention proposes intermittent running mode including two separated stages of growth and degradation. The present invention adopts high temperature culture and normal temperature degradation, agricultural waste corn cob and timber as nutrients source, high nutrients concentration for growth and low nutrients concentration for degradation and natural ventilation in growth stage, and thus has low power consumption and low cost. Adding carrier can maintain higher exocellular enzyme concentration, speed reaction, maintain higher decolorizing efficiency and separate mud from water. The present invention has good oxygen supply, good hydraulics characteristic and high hetero bacteria pollution resistance.

The invention relates to a salt-resistant strong-inhibitive reservoir-protecting drilling fluid which comprises the following components in part by weight: 2-4 parts of bentonite, 1-3 parts of salt-resistant clay, 0.1-0.2 part of sodium carbonate, 100 parts of water, 0.4-0.8 part of tackifier ST-MH, 2-3 parts of fluid loss additive KNT, 0.2-0.6 part of shale inhibitor, 2-6 parts of organic composite sylvite BPC, 2-3 parts of bridge additive and 2-3 parts of biological enzyme storage agent. The drilling fluid has strong salt bed resistance, pollution resistance and inhibitive ability.

The invention relates to a microbial strain and a fungicide and belongs to the technical field of microorganisms.The invention provides a photosynthetic bacterial strain HL which is identified as red pseudomonas (Rhodopseudomonas sp.) CGMCC No.11874.The strain is quick to grow and propagate, high in bacterial concentration and good in sundry bacterium contamination resistance capability and can degrade and remove various pollutants under the lighting or dark condition.The invention further provides a microbial fungicide containing the strain and a compound fungicide papered by the strain and another photosynthetic bacterial strain.The microorganisms can well grow in treated wastewater adopting the fungicide, occupy beneficial ecological niches and inhibit the growth and propagation of pathogenic microorganisms.

The invention discloses a preparation method of an anti-pollution hollow PVDF (polyvinylidene fluoride) fiber membrane with an efficient heavy metal ion and organic dye removing function, and belongsto the field of high polymer materials. A product of the hollow fiber membrane is characterized in that heavy metal ions such as nickel, chromium, lead and the like in water can be adsorbed and removed, organic dyes such as bright blue, methylene blue and the like can be simultaneously adsorbed and removed, removal efficiency of the heavy metal ions and organic dyes in water is high, and the product has anti-pollution property to protein and microorganisms in water. According to the product of the hollow fiber membrane, the adsorption removal rate for low-concentration chromium ions reaches 90% or higher, and the methylene blue removal rate under the action of natural light reaches 90% or higher. Static protein adsorption tests show that adsorption of protein by the fiber membrane is reduced by 80% when compared with that by unmodified membranes. The product has the advantages that pressure resistance is good, a support body is not needed, the membrane area per unit volume and the fluxare large and the like; besides, special equipment is not required for preparation, industrial implementation is facilitated, and the cost is reduced.

The invention relates to a low temperature protease production strain, low temperature protease produced by the same and a gene of the enzyme. A strain of planococcussp. producing low temperature protease is separated from the southern Indian Ocean deep-sea sediment for the first time, the preservation number of the strain is CGMCC No.8088, the optimum growth temperature and the optimum enzyme production temperature are both 20DEG C, and the fermentation level protease yield can reach 280U / mL. The optimum operation temperature of the protease produced by the strain is 30-37DEG C, the optimum pH is 7.5-9.0, under the condition of 30DEG C, over 80% of the highest catalytic activity can be maintained, and in the range of 20-25DEG C, the protease still has high catalytic activity. The protease produced by the strain belongs to typical low temperature alkaline protease and has good catalytic activity at normal temperature, thus having high research value in food processing industry, cold water detergent development and other aspects.

The invention discloses a brewing method of dendrobium officinale and siraitia grosvenorii wine. The brewing method comprises the following steps of preparing dendrobium officinale homogenate; preparing siraitia grosvenorii homogenate; performing first-step fermentation, loading the siraitia grosvenorii homogenate into a fermentation tank, adding food grade ion exchange resin, and adding yeast for fermenting; performing second-step fermentation, then adding the dendrobium officinale homogenate, honey and traditional Chinese medicine leaching liquid for continuously fermenting, wherein the traditional Chinese medicine leaching liquid is prepared from the following components: rhizoma curculiginis, lucid ganoderma, cornu cervi pantotrichum, largehead atractylodes rhizome, rhizoma chuanxiong, liquorice root, fructus lycii and tangerine peel; treating after fermenting, and roughly filtering after the second-step fermentation to obtain wine liquid; adding alum powder, ageing, using a compound fining agent for fining; freezing, filtering and canning to obtain the dendrobium officinale and siraitia grosvenorii wine. The compound fining agent is prepared from the following components: polyvinylpyrrolidone hydrogel, silica sol, activated carbon, chitosan powder and lactic acid. According to the brewing method disclosed by the invention, effective ingredients of the dendrobium officinale and siraitia grosvenorii wine are fully extracted and fused; meanwhile, the content of total acid in the wine, the content of methanol, the content of fusel oil and the content of lead are reduced.

The invention discloses a double ion modified cellulose membrane and a making method thereof. The double ion modified cellulose membrane comprises a cellulose membrane, and a double ion polymer containing a siloxane group is grafted to the surface of the cellulose membrane through the hydrolysis condensation effect of a hydroxy group on the surface of the cellulose membrane and a double ion monomer containing the siloxane group. Compared with the raw material cellulose membrane, the double ion modified cellulose membrane has the advantages of similar membrane flux, good hydrophilicity while maintaining large flux, strong protein pollution resistance, good compatibility with blood, simple making method thereof, and realization of operation cost reduction without oxygen removal in the operation process.

The invention discloses a system and a method for treating organic wastewater of a circuit board. The system comprises circuit board processing equipment, a collection pool, a vibration film ultrafiltration device, a reverse osmosis device and an incinerator, wherein the vibration film ultrafiltration device comprises an enclosure, a membrane module and a motor, wherein the membrane module downwards extends to form a central rotating rod, therefore, swing can occur by using a centrifugal force generated by matching and utilizing the motor and a belt to drive an eccentric block on a central driving rod to rotate; energy generated by swing promotes the membrane module to vibrate through the central driving rod; and a shear force generated by high-frequency vibration is spread through a membrane surface in the membrane module in a sine force, thereby the silt of the membrane in the membrane module is effectively overcome and the simple and effective treatment of the organic wastewater ofthe circuit board is realized. The treatment system can be used for continuously and effectively separating clear solution from concentrated solution; the clear solution is input into the reverse osmosis device for RO (Reverse Osmosis) advanced treatment and then is recycled to the circuit board processing equipment, so that the cost is saved; and the concentrated solution is incinerated and treated by using the incinerator, and thus the goals of reducing emission and waste are achieved.