59 results about "Bio degradation" patented technology

The invention discloses a biostimulation method for remediation of oil-polluted soil. In the method, on the premise of not adding an oil pollutant biodegrading bacterial agent, a soil conditioner is added to improve the soil environment, reduce soil stickiness, increase the soil permeability, adjust the water-retaining capacity of the soil, adjust inorganic and organic nutrients necessary for local microbe growth, maintain the pH value of the soil close to neutrality, promote oil pollutant degrading microbes in the soil to grow and propagate, and improve the oil pollutant degrading efficiency of the local microbes; by planting plants, the microenvironment of the soil near root systems of the plants is improved, the plants secrete organics with low molecular weight such as amino acid to the root systems so as to stimulate the massive propagation of the local microbes and indirectly promote oil pollutant degradation by the microbes of the root systems; and the biostimulation method has the advantages of accelerating the remediation of the oil-polluted soil and restoring the original state of the soil.

The invention relates to a micro-polluted surface water treatment method based on a bio-membrane reactor. A ceramic carrier water pump is employed for driving a baffle-plate internal-circulating bio-membrane reactor to performing denitrification, dephosphorization and/or organic substance removal to micro-polluted surface water. A separation plate is arranged in the bio-membrane reactor to separate the interior of the reactor into an oxygen dissolving zone at the upper part and a bio-degradation zone at the lower part, wherein the oxygen dissolving zone is communicated with one end of the bio-degradation zone while the other end of the bio-degradation zone is communicated with a circulation pipe through a circulation pump, so that waste water to be treated flows through the oxygen dissolving zone and the bio-degradation zone continuously. A plurality of flow guide boards are vertically arranged in the bio-degradation zone at interval and are arranged in a high-low interlaced manner, thereby forming a channel in which solution can flow in a vertical baffled manner in the reactor. The flow guide boards are used as a carrier of a bio-membrane. Compared with a reactor in the prior art, by means of the reactor, ammonia nitrogen and total nitrogen in polluted river water are removed well and a certain removal effect on total phosphorus and organic substances in water is achieved too.

The invention discloses a treatment method of a high-concentration resin desorption liquid after the deep purification of wastewater, belonging to the field of resin desorption liquid treatment. The method comprises the following steps of: intercepting a high-concentration desorption liquid treated with anion exchange resin by using a nanofiltration membrane to obtain high-concentration nanofiltration intercepted liquid and nanofiltration penetrating liquid, wherein the nanofiltration penetrating liquid can be reused as a desorption agent after being oxidized; adding a coagulating agent into the produced high-concentration nanofiltration intercepted liquid to carry out coagulating sedimentation; carrying out Fenton oxidation or ozone oxidation on the supernatant liquid after coagulating sedimentation; adding alkaline liquid into the solution for further coagulating sedimentation after reaction; and returning the liquid after coagulating sedimentation back to the biochemical system of the biochemical tail water stage for further biological degradation. The high-concentration intercepted liquid treated by the method provided by the invention can return back for biological degradation, and the circular treatment of the high-concentration desorption liquid is realized. The method saves treatment cost, avoids secondary pollution and realizes the harmlessness, the reduction and the recycling of the resin desorption liquid.

The invention discloses a pure-cotton fabric biological enzyme scouring and blenching one-bath process. The process comprises the following steps: preprocessing a piece of gray fabric in a heater, then scouring and bleaching the gray fabric in an enzyme oxygen scouring and bleaching solution, neutralizing and washing the gray fabric by utilizing organic acid, washing the gray fabric by utilizing cold water, dewatering the fabric, and drying the fabric by utilizing a drying machine. The capillary effect, whiteness and color yield of a pretreatment semi-finished product are better than those of a traditional alkaline agent scouring and bleaching process; by adopting the low-bath-ratio process technology, the consumption of water, electricity and vapor can be effectively reduced, and the discharge of waste water can be reduced; by adopting the bio-degradation technology, the damage of chemical assistants such as caustic soda, a penetrating agent, hydrogen peroxide stabilizer, a chelating dispersion agent used in the traditional high-temperature alkaline scouring process to cloth can be avoided, a great amount of hot water in the later washing step is not needed, and only the biological enzyme is used for neutralizing washing; the biological enzyme is toxic-free and easy to biologically degrade, so that the comprehensive benefit is obvious.

The invention relates to a bio-degradable heat-viscose bi-component filament fiber, which comprises a surface fiber layer and is characterized in that a plurality of core-layer fibers are arranged at the center of the surface fiber layer. The invention further relates to a production method of the bio-degradable heat-viscose bi-component filament fiber, which is characterized by including the following processes of (1) drying poly butylenes succinate and polylactic acid in a vacuum environment; (2) melting and extruding the poly butylenes succinate and the polylactic acid in two screws of a double-screw composite spinning machine, feeding the same into a composite spinning component after being metered by a metering pump, spraying from a composite spinneret plate, cooling to the room temperature, and reeling to form reeled filaments after applying spinning oil; and (3) drafting after balancing the reeled filaments at the room temperature, and accordingly obtaining the bi-component composite filament fiber. The bio-degradable heat-viscose fibers produced by the production method are fine in viscosity, high in strength and better in flexibility and have excellent bio-degradation and absorbability for human bodies.

The invention discloses a rural water-saving and odorless ecological toilet for separation and collection of faeces and urine. The rural water-saving and odorless ecological toilet for separation and collection of the faeces and urine comprises a faeces pool and a tank body, wherein a bottom plate is arranged in the tank body, and the tank body is divided into an upper part and a lower part through the bottom plate; a toilet bowl is arranged at the upper part of the interior of the tank body, and the faeces pool is arranged below the outside of the tank body; the toilet bowl is communicated with the faeces pool, and the faeces pool is also connected with a dry faeces chamber; the dry faeces chamber is internally provided with a drying device, and the faeces pool is internally provided with a faeces processing device; a rainwater box and a control device are arranged on the top of the outer surface of the tank body, and a solar battery panel is arranged on the control device. Since a bio-fermentation chamber, a liquid fertilizer pool and a dry faeces pool are connected with the faeces pool, every time a toilet user finishes an excrement, separation of the faeces and the urine is conducted firstly, then the faeces in the faces pool is subjected to bio-degradation and temperature-raising dehydration, and solid faeces are processed into faeces blocks or granules which are then stored in the dry faeces pool for weathering and drying; the emitting amount of odor of the faeces after dehydration is greatly reduced, so that the surrounding environment is protected.

An efficient bio-cleaning process for organic waste gas includes such steps as oil fog separating, ultrasonic decomposing for cracking the high-molecular and benzene ring moleculae, biologic filtering for bio-degradation and bio-cleaning, adding surfactant for speeding up the transfer of hydrophilic organic substance from gas phase into liquid phase and improving the efficiency, and exhausting the treated waste gas into atmosphere. Its system is composed of oil fog separator, UV decomposing chamber, bio-cleaner, water circulating moistener and surfactant adding unit.

The invention relates to a preparation method for a two-way stretched polylactic acid fiber porous membrane and belongs to the technical field of thin film materials. Polylactic acid melt-blown or spun-bonded fiber nets are subjected to multi-time hot rolling and two-way stretch, finally heat setting is conducted, and the two-way stretched polylactic acid fiber porous membrane is prepared. The method is suitable for preparing the fiber porous membrane from different polylactic acid melt-blown or spun-bonded fiber nets, and the prepared polylactic acid fiber porous membrane has the advantages that the pore diameter, porosity and thickness are controllable, the surface is smooth, and bio-degradation can be achieved, and can be widely used for packaging materials, filtering materials, medical materials, agricultural protective materials, degradable environment-friendly materials and the like.

The invention relates to a method for restoring lead polluted soil by rinsing, which has the advantages of higher biodegradability and higher rinsing efficiency. The method comprises the following steps: taking a PVC (polyvinyl chloride) rinsing column of which the internal diameter is 5cm and the height is 15cm, making pinholes in the bottom of the rinsing column, fixing filter paper to the bottom, accurately weighing 100.00g of lead polluted soil, filling the lead polluted soil into the column, and adding a 1-24 mol/L PASP (polyaspartic acid) solution to the upper end of the soil column at one time in a soil-to-liquid ratio of 1:1-1:5; and after finishing rinsing, determining the content of the heavy metal lead in the rinsing liquid.2-16 pinholes are uniformly made in the bottom of the rinsing column. The filter paper fixed to the bottom is composed of two layers. The lead concentration of the polluted soil is 1000-4020 mg.kg<-1>. By using the PASP for reinforced restoration of the lead polluted soil, the method has the characteristics of high restoration efficiency, high operability, low environmental risk and the like.

The invention relates to a technical method for combining coagulating rotational flow filtering with multi-dimensional catchment wetland. The method comprises the following three steps: magnetic intensifying flocculation, eddy deposition separation and artificial wetland purification; water is respectively subjected to flocculation reaction, pollutant deposition separation and artificial wetland filtering, so that water purification is realized; the method further comprises the step of recycling magnetic powder, so that the recycling of the magnetic powder is realized. According to the technical scheme, the flocculation, eddy, filtering, micro-biological degradation and artificial wetland techniques are jointly applied to an initial rainwater treatment device, the separation of pollutants in rainwater is intensified through the flocculation, eddy, filtering and artificial wetland techniques and the separated pollutants can be further degraded and removed through the micro-biological degradation technique. According to the technical method, the matters, such as suspended solids, greasy dirt and floats, in the rainwater can be removed to a great extent, and meanwhile, the technical method is capable of greatly reducing the land occupation.

The invention discloses preparation of ganoderma lucidum active polysaccharides by biofermentation degradation and an analytical method of the ganoderma lucidum active polysaccharides. The analyticalmethod comprises the following step that S1, fermentation culture of ganoderma lucidum liquid is conducted, and bacterial strain of ganoderma lucidum is firstly transferred to a plate PDA medium in anincubator with 25-30DEG C for 5-7d for activation, after the plate is covered with mycelium, a fungus block with the size of 3-6mm<2> is picked out and put into a 250mL shaking bottle with the filling capacity of 100mL for liquid fermentation culture for 7-10d to obtain a first grade seed; and 10% inoculation dose is injected into a liquid medium. A yeast fermentation method for biodegradation ofganoderma lucidum macromolecular polysaccharides, combined with an ethanol precipitation method for preparation of active low molecular weight polysaccharide components, yeast added degrades the highmolecular weight polysaccharides in the extracellular fluid into lower molecular weight polysaccharides. By a fact that Dectin-1 receptor is combined to activate NF-[kappa]B, the ganoderma lucidum active polysaccharide components are used to enhance immune activity.

The invention discloses an oxidable biodegradable cross-linked polyhydrocarbon heat shrinkable film. The preparation method of the oxidable biodegradable cross-linked polyhydrocarbon heat shrinkable film comprises the following steps: melting and extruding linear low-density polyethylene LLDPE, a slipping agent, ternary copolymerized polypropylene and an anti-blocking agent, carrying out electronbeam radiation cross-linking, performing blowing up, rolling and slitting to obtain a finished product; weighing raw materials of each layer according to the total raw materials, specifically, the rawmaterials of the first outer layer comprising 1.5%-5% of PP and 2%-4% of an anti-blocking agent, the middle layer being prepared from the following raw materials, by weight: 70%-85% of LLDPE, 3%-10%of LDPE and 2%-4% of slipping agent, and the second outer-layer raw material being the same as the first outer-layer raw material. The oxidative biodegradation time of the obtained film is 6-24 months. Through cooperation of the raw materials and an electron beam crosslinking process, the hot melting section performance of the heat shrinkable film is improved, and the heat shrinkable film has a wide market prospect.

This invention relates to a method for producing paper making bamboo fiber materials, which applies a combination method of low chemical moist expansion, bio-degradation and physical analysis to cut up and select biomass for low chemical moist expansion, dipped with bacterium and analyzed mechanically then to be steamed and analyzed mechanically to prepare fiber materials of paper making, which meets the requirement of environment protection.

The invention provides an edible seaweed straw prepared by taking sodium alginate as a main raw material. The seaweed straw is prepared by the following steps: preparing a gel solution from the sodium alginate with the viscosity of 10-100 MPa.s, sesbania gum and a softening agent, uniformly coating a mold with the gel solution, and drying; and immersing the dried mold in an edible acid solution of divalent metal salt, and after immersion, preparing the edible seaweed straw through subsequent conventional straw-making steps. The prepared edible seaweed straw is an edible biological material, and has the characteristics of safety, no plasticizer, no toxic or side effect, 100% full bio-degradation, acid resistance, ultrahigh temperature resistance, low temperature resistance and the like. The tensile strength of the prepared edible seaweed straw ranges from 70 MPa to 100 MPa, the elongation at break ranges from 5% to 8%, and the water solubility is smaller than 3%. The seaweed straw disclosed by the invention has thermal stability, strong mechanical property and barrier property, is an effective substitute of a plastic straw, and has obvious use value and potential consumer market.

The invention discloses a biodegradable composite film for an automatic packaging machine and a preparation method of the biodegradable composite film. The composite film is sequentially composed of a surface base film layer, a printing layer, a first bonding layer, a blocking layer, a second bonding layer, a coating layer and an inner base film layer from outside to inside. The composite film is excellent in barrier property and printing performance, the inner layer material and the outer layer material have remarkable temperature resistance difference, the composite film can be normally used on the automatic packaging machine, the biological decomposition rate can reach 90% or above within 180 days in an industrial composting state, the EN13432 and ASTMD6400 standards are met, and the composite film has important significance in solving the problem of white pollution caused by discarding of existing film bags for the automatic packaging machine.

The invention belongs to the technical field of waste water treatment and relates to a device and method for treating naproxen waste water under a low temperature environment. The device is composed of a water distribution chamber, an anaerobic magnetic-force intensified biological filter tank, an electric-biological degradation reaction tank and an aerobic magnetic-force intensified biological filter tank, and a negative plate (13) and a positive plate (14) of the electric-biological degradation reaction tank are in series connection between a spiral coil (11)of an aerobic magnetic biological filter material layer (5) and a spiral coil (11) of an anaerobic magnetic biological filter material layer (6), then are in series connection with a sliding resistor (21) and then are connected with a direct current power source (1). Water is treated through the water distribution chamber, the anaerobic magnetic biological filter material layer (6), a filling particle electrode layer (4) and the aerobic magnetic biological filter material layer (5) in sequence and then drained out. The device is compact in arrangement and simple in structure, and the naproxen waste water is treated physically, chemically and biologically under the low temperature condition, so that the removal purpose is achieved.

The invention relates to membrane bioreactors and discloses a gravity action based strengthened-separation columnar integrated membrane bioreactor. The gravity action based strengthened-separation columnar integrated membrane bioreactor comprises a reactor shell (1) and further comprises an adjustable aeration device (2), wherein the adjustable aeration device (2) comprises aerating pipes (21) andan air conveying header pipe (22), the aerating pipes (21) are sequentially inserted into the reactor shell (1) along a vertical direction and aerate the interior of the reactor shell (1) of different horizontal heights, and an adjusting valve (210) is mounted on each aerating pipe (21). According to the gravity action based strengthened-separation columnar integrated membrane bioreactor, throughcarrying out adaptive control on A/O section and sludge refluxing and high-shear crosscurrent section of water body, corresponding ingredients are thoroughly degraded through a biodegradation section; sludge is separated from other ingredients on the basis of gravitational separation and mechanical separation (biofilm formation), and a good membrane section environment is created; trapped separation is carried out on the basis of a high-shear crosscurrent membrane assembly; and all modules in the reactor can be detached for maintenance.

The invention relates to a sludge treatment method. The method comprises the following steps: primary treatment: primarily filtering sludge through a grating plate; ultrasonic treatment: carrying outultrasonic treatment on the sludge subjected to primary treatment, wherein the vibration frequency is 20-40 KHz; ozone fermentation treatment: mixing the sludge subjected to ultrasonic treatment witha zymophyte solution, adding a pH regulator, and collecting generated gas during the period; and curing treatment: adding a curing agent into the sludge subjected to ozone fermentation treatment, andtreating for 30-50 minutes. According to the sludge treatment method disclosed by the invention, large impurities are filtered out through a grating plate, then a cell structure and a floc matrix aredestroyed by using ultrasonic waves, substances in cells are released, subsequent bio-degradation is facilitated, then through ozone fermentation treatment, combustible gas is collected, and then theremaining sludge is solidified and pyrolyzed, so that the utilization rate of the sludge is maximized.

The invention relates to an anti-radiation fabric. The fabric is characterized by comprising a surface layer (101), a first fabric layer (102) and a second fabric layer (103). The outer surface of the second fabric layer (103) is covered by the first fabric layer (102). The outer surface of the first fabric layer (102) is covered by the surface layer (101). A metal net is arranged between the first fabric layer (102) and the second fabric layer (103). According to the anti-radiation fabric, SEE ecological cotton is arranged between the outer fabric layer and the inner fabric to make the fabric have the characteristics of biological degradation, energy-saving, emission reduction, environmental and ecological protection. The fabric is an ideal green fabric with environmental protection and thermal insulation features.

Method for characterizing a heavily biodegraded oil sand ore sample by microwave-assisted bitumen extraction. Vacuum-filtration of solvent-extracted bitumen and sediments provides a means to recover sediment fines down to a particle size of 0.8 μm, which is the analytical requirement for accurate mineralogical analysis of the clay mineral fraction. The method may be completed in hours, making it suitable for “just-in-time” analyses at the mine site. The recovered sediment and sediment fines are suitable for characterization using traditional analytical techniques to understand mineralogy, petrology, and reservoir properties.

A method for the collection and ecologic treatment of domestic sewage of villages and towns in plain water network region comprises the following steps: constructing ecologic concrete wall along creeks or shores of lakes and ponds so as to form ecologic regulation ditches with the shores, and enabling peasant households living along the shores to drain domestic sewage into the ecologic regulationditches taking the village or town as a unit; leading part of the sewage to pass ecologic concrete wall with filtration entrapment and biological degradation functions for filtration entrapment and biological degradation, so as to remove pollutants; planting calamus, thalia dealbata and other natural aquatic plants in the ecologic regulation ditches, so that part of the sewage is degraded by the ecologic regulation ditches with an automatic oxygenation function to purify water; and ensuring that outlet water enters into the creeks or rectangular purification floating islands of the lakes and ponds, as well as landscape floating islands planted with canna, eichhornia, rush, calamus, cyperus alternifolius, loosestrife, arundo donax var, versicolor, and other aquatic plants in clusters for deep purification. The invention can treat the domestic sewage of scattered villages and towns under the premise that a sewage collection pipe network and a sewage collection system are not constructed, and has the characteristics of sound effect, low running cost, maintenance convenience, remarkable ecologic benefits.