3678 results about "Water extraction" patented technology

The invention relates to a preparation method of a foliar fertilizer which comprises nucleic acid degradation products. The invention is characterized in that: malt sprout is employed to obtain nuclease liquid with a low temperature water extraction method, nucleic acid solution and enzyme solution are blended according to a proportion by weight of 1 : 2 to 3 portions of nucleic acid and malt sprout, and the solution is hydrolyzed at a temperature of 65 DEG C and a condition of pH 5.6 for 3 to 4 hours, then a nucleic acid degradation product foliar fertilizer is obtained after enzyme dispelling, filtering, enzyme and milling. The preparation method of the invention is characterized by simple technique, easily available raw material, pollution free exhaust and low production cost; the prepared nucleic acid degradation products of the foliar fertilizer are nucleosides, nucleotides, pyrimidine, purine and other micromolecule, thus being beneficial to the metabolism process of nucleic acid, and the invention also contains a great amount of nutrient components such as glucide, protein and minerals, etc., which are needed by the growth of crops, thus promoting the growth of crops, strengthening resistance and obviously improving yield and quality; the yield of wheat is improved by 7 to 10 percent, protein content is improved by 1 percent and wheat gluten content is improved by 3 percent; solution is prepared by the foliar fertilizer of the invention according to requirements of the growth of crops to spray; absorption speed of foliage is fast, and brings no pollution to soil; the foliar fertilizer is a non polluted green fertilizer.

The invention discloses a method for comprehensively recycling valuable metals from a spent lithium ion battery. The method comprises the following steps: carrying out electric discharge treatment on a spent battery, crushing, pre-roasting at 300-400 DEG C, adding a reducing agent, and carrying out reduction roasting at 450-700 DEG C; carrying out water extraction and evaporative crystallization on fine aggregates obtained through the reduction roasting, so as to obtain a high-purity lithium product, leaching copper, nickel and cobalt from leached slag and roasted lump materials by virtue of ammonia oxide, carrying out magnetic separation and sieving on ammonia leaching slag so as to obtain iron and aluminum enriched products, and carrying out reduction acid leaching, purification and edulcoration on sieved products, so as to obtain a high-purity manganese sulfate solution; and carrying out extraction and selective reverse extraction on ammonia leaching liquid, so as to obtain a high-purity nickel sulfate solution and a high-purity copper sulfate solution, and carrying out vulcanization cobalt precipitation, oxidation acid leaching and extraction purification on raffinate, so as to obtain a high-purity cobalt sulfate solution. The method is high in extraction rate of valuable metals and applicable to the treatment of multiple waste lithium ion battery raw materials and efficient utilization of multiple elements, and sorting is not required.

The present invention is directed to a water making device that collects the moisture contained in the atmosphere and condenses it into high purity water. In one embodiment, moist air entering the water making / water cooling system flows across an air filter, then a precooler heat exchanger (where the air stream is cooled to or close to its dew point) and then a water extraction heat exchanger, where the air stream is cooled further and water is extracted. The water that leaves water extraction heat exchanger is collected in a water collection device and passes from there through a primary water filter into a water storage tank. The air stream then passes across a reheat heat exchanger and exhausted to the outside. A water circulation pump extracts water from the water storage tank and circulates the water stream through an evaporator of a vapor compression refrigeration system, where the water stream is chilled, then through the water extraction heat exchanger and precooler, where the incoming air stream is chilled by removing heat to the water stream. The water stream is then circulated through the reheat heat exchanger, where the water stream is again cooled by removing heat to the cool dry air exiting the water extraction heat exchanger. Finally, the cooled water stream is circulated through the water filter to a three way valve, that directs water flow either to a dispenser or back to the water storage tank.

The invention involves novel drug use of six-rowed chrysanthemum plant extracts which is used to treating herpes simplex virus (type 1 and / or type 2) and various disease caused by hepatitis B virus infection. The six-rowed chrysanthemum plant extracts is prepared by six-rowed chrysanthemum plant fresh or dry goods through the refining of alcohol-water extraction, column chromatography, alcohol solvent elution, the amount of caffeoyl guinic acid chemical compound is below 30%. The six-rowed chrysanthemum plant extracts prepared in the invention has significant function of inhibiting herpes simplex virus with type 1 (HSV-1), herpes simplex virus type 2 (HSV-2) and hepatitis B virus (HBV) replication, and can reduce effectiveness of HBV e antigen (HBeAg) in the HepG 2.2.15 cell lines, it can be used for treatment various disease caused by said correlate virus infection.

An automatic laundry washing machine that is suitable for use in living units having no area set aside for laundry facilities is achieved by replacing the heavy bulky parts of the currently popular automatic washing machine design with a light flexible bag. A large portion of the volume of any washing machine is the vessel for containing the laundry solution and articles to be washed. That vessel is a flexible bag made of modern durable material so as to be collapsible both while in use and for storage. The method of use includes the complete process of washing, rinsing, and extracting excess water in an automatic cycle analogous to standard automatic washing machines popular today. The vessel containing the items being laundered is a waterproof laundry bag with automatic washing apparatus attached. Items are automatically washed in that bag. The automatic process includes cycles of filling, washing, rinsing and extracting such that the clothes are ready for a drying process such as hanging out to dry or putting into a tumble dryer. The agitating of the washing and rinsing cycles is accomplished without the familiar bulky agitator thereby reducing the volume requirements and the traditional wear and tear on the garments. By eliminating the bulky agitator and the spin water extraction method, the heavy transmission is also eliminated. The water extraction cycle is done in a much less violent way than the conventional spin cycle by allowing atmospheric pressure to collapse the washing vessel and press the water from the articles as the water and air are pumped from the vessel in the draining portion of the cycle. The cleaning ability of the water is enhanced by built in ionic processing of the water thereby reducing the required amount of laundry detergent. The agitating in the non-electrically conductive vessel generates static electric charges in the process and ions thus produced further enhance the cleaning ability of the water. Cavitation produced in a multi-frequency washing action further enhances the washing ability of the water. The washing machine is light, compact and collapsible and is as portable as a piece of luggage. The set up procedure is simple and no assembly is required beyond attaching a quick connect fastener to a water faucet and plugging in a power cord. The washing machine is light and takes little storage space. It can be put in a small closet or on a shelf when not in use. The minimum capacity of the washing machine is a single garment. The normal capacity of the washing machine is comparable to that of a standard household washing machine.

The invention discloses an edible and medical fungus cell component comprehensive extraction method and use of extract, which belong to the technical field of natural product extraction and application. The method comprises: breaking walls of the cells of the edible and medical fungi by combining an enzymic process and ultrasonic waves; extracting the extract and fungus slag by processes of water extraction, alcohol extraction and fat extraction in different sequences to obtain various nutritive components and bioactive components, such as cellulose, protein, nucleic acid, polysaccharide and fatty acid. In the invention, due to the adoption of a wall breaking-first and extraction-second scheme, the extraction rate of the cell components of the edible and medical fungi is improved considerably; the extract is extracted by water extraction, alcohol extract and fat extraction in turn and the fungus slag is extracted by fat extraction, alcohol extraction and water extraction in turn, so the flavor of the edible fungi is retained effectively; the various cell components of the edible and medical fungi serving as raw materials are extracted comprehensively and further developed; and the extracted components are natural materials, have both nutritive and health-care and pharmacological effects and can be made into various products according to the characteristics of the extracted components.

The invention discloses a traditional Chinese medicine preparation for treating cancer, which is prepared by 103 types of bulk drugs such as solidago decurrens, Chinese sage herb, hypericum japonicumand the like. A preparation method of the traditional Chinese medicine preparation comprises the following steps: preparing the bulk drugs into water extract by a conventional method; using the prepared water extract for preparing oral solution by a traditional method; drying the obtained water extraction, then conducting grinding and sieving; taking the throughs for extracting powder, and using the extracted powder for preparing tablets, granules, electuaries or capsules by a traditional method. The preparation method also can be as follows: sieving out the dust of the bulk drugs, conductinggrinding and sieving, taking the throughs, conducting disinfection and sterilization to obtain raw powder, and using the raw powder for preparing tablets, granules, electuaries or capsules by a traditional method. With drugs mixed rationally, the traditional Chinese medicine preparation addresses both the symptoms and root causes of cancer. The bulk drugs are frequently-used common Chinese drugs,have low preparation cost and small side effect, and can effectively enhance own immunity, attack pathogen while do not damage body. The traditional Chinese medicine preparation can cure various typesof cancer, particularly lung cancer, stomach cancer, liver cancer, esophageal cancer, pancreatic cancer, cervical cancer and breast cancer.

Anthocyanins, other flavonoids and related polyphenolic compounds are extracted from fruits or highly pigmented garden vegetables and their by-products using subcritical water with or without a secondary cosolvent. This method has the advantages of being relatively inexpensive, minimizes or totally avoids the use of objectionable solvents, and provides a facile means for supplying an ample source of concentrated phytochemicals for use in food formulation, dietary supplements and phyto-pharmaceutical applications.

A DEMWAX™ water treatment system includes membrane modules and a collection channel. The membrane modules are submerged at depth and tethered to one or more anchors on the ocean floor. A breathing tube extends between the collection channel and a buoy floating on the surface of the ocean to expose the collection channel to atmospheric pressure. A pump pumps the permeate from the collection channel to shore through a permeate pipe. One or more permeate storage tanks can optionally be disposed within the system, for example, as part of or extending from the collection channel, to provide extra storage.

The present invention process of danshen salvianolic acid B includes the technological steps of: water extraction; acidifying extractive liquid; column chromatographic separation and purification of salvianolic acid B; and drying. The said process has high extraction rate and high purity, and the extracted product has salvianolic acid B content as high as 90% and stale quality. The present invention is suitable for large scale production.

The invention discloses a method for manufacturing dentate special-shaped ceramic components by injection molding, belonging to the technical field of high-performance ceramic preparation. The methodcomprises the following steps: evenly mixing 81wt% to 90wt% of ceramic powder and 10wt% to 19wt% of organic binders by weight percentage to obtain an injection-molding mixture, injection-molding the injection-molding mixture on an injection-molding machine with the injection temperature being 175 to 195 DEG C, to obtain a green body, and de-molding within 2 minutes after the injection, so as to obtain a molded green body; and then, subjecting the molded green body to water-extraction degreasing and thermal degreasing, sintering the degreased green body at 1,350 to 1,550 DEG C, holding for 1 to4 hours and furnace-cooling to obtain the ceramic components. The invention has the advantages of high automation degree, high molding and degreasing efficiencies, even green body, high dimensional accuracy and surface smoothness of sintered products, and environment-friendly and energy-saving manufacture.

The invention provides an extraction method and a device used for extracting ultrasonic reinforced sub-critical water of effective component of a natural outcome. The method is mainly characterized in that a pre-disposed raw material is arranged in an extraction kettle; the sub-critical water is taken as an extraction solvent to carry out the exaction under the conditions of 1 to 20MPa of extraction pressure, 50 to 500W of ultrasonic power and 20 to 80KHz of ultrasonic frequency. The method has high extraction efficiency and short extraction time. The device is mainly characterized in that the extraction kettle is provided with an ultrasonic reinforced part which comprises an ultrasonic generator and an energy changing head; the ultrasonic generator is arranged on the external surface of the extraction kettle and at the upper part of the extraction kettle; the energy changing head and the extraction kettle cover are processed into a whole; the piezoelectric ceramic wafer of the energy changing head is arranged at the upper end of the extraction kettle cover; the variable-spoke rod of the energy changing head is directly arranged in the extraction kettle by the extraction kettle cover. The device can carry out selectable exaction of the articles to be extracted by changing the extraction parameters (temperature, pressure, time, etc.), thus realizing static extraction or dynamic circulation extraction.

A method for revitalizing a fabric load with a revitalization system comprises selecting a revitalization program from a plurality of programs and operating the revitalization system in accordance with the selected revitalization program. The programs can include at least one of a fluid insertion step; a fabric relative motion step; a fluid extraction step; a fabric refreshing step; a fabric reshaping step; a light cleaning step; a water extraction operation, a relative motion operation; a fabric air flow operation; a cooling operation; a fluid insertion operation; and a fabric fluid absorption operation.

A chlorogenic acid extraction process of the present invention includes crushing honeysuckle, water extraction of chlorogenic acid and macroporous resin adsorption to separate high content chlorogenic acid. It features that in the last technological step, the chlorogenic acid extracting liquid is saturated and adsorbed with macroporous resin, the chlorogenic acid in resin is washed and dissolved with low concentration alcohol to obtain chlorogenic acid eluting liquid, the eluting liquid is concentrated while recovering alcohol and the concentrated chlorogenic acid condensate is spray-dried to obtain chlorogenic acid powder product with chlorogenic acid content over 40%. The isochlorogenic acid in the resin column is produced into powder product through methanol washing and dissolving, concentrating and spray drying, after recovering method.

The invention relates to an extraction method of sargassum fusiform active polysaccharide, which uses four-step extraction method as combined ultrasonic extraction, water extraction, alkali extraction, hot water extraction and ultrasonic technique, thereby improving sargassum fusiform polysaccharide extraction rate and avoiding damage on sargassum fusiform activity in polysaccharide extraction. Besides adding the character of polysaccharide on extract, the prepared sargassum fusiform active polysaccharide has high oxidation resistance, which is suitable for cosmetic technical field. In addition, the prepared sargassum fusiform polysaccharide uses active carbon adsorption and AB-8 macroporous adsorption resin to combine decolor and de-fishy, thereby resolving the key techniques as decolor and de-fishy of sea phaeophyceae polysaccharide as sargassum fusiform or the like, to improve polysaccharide purity, appearance quality and confirm the high oxidation resistance of de-fishy and decolor polysaccharide.

The invention relates to a method for preparing a health-care food (therapy) product (nutrient juice wine) by use of extracts from cordyceps militaris and cocoon, aiming at extracting multiple nutrient substances with natural activity from cordyceps militaris and cocoon wastes to produce different types of dietary supplements for fully improving the utilization rate of cordyceps militaris and cocoon. The method is characterized in that the nutrient components can be extracted from the cordyceps militaris and the cocoon through freezing and thawing, combined enzymolysis, and a water extraction and alcohol precipitation step-by-step extraction method, and the health-care food (therapy) product has three formulas (in part by weight) according to different functions (requirements): A. nutritive extract of cordyceps militaris and cocoon 85% and assistant 15%; B. nutritive extract of cordyceps militaris and cocoon 95% and assistant 5%; and C. nutritive extract of cordyceps militaris and cocoon 98% and assistant 2%, wherein the assistant can be starch, beta dextrin and the like, can be combined with one of A, B and C formulas to produce the health-care food (therapy) product with different efficacies through the processes such as sterilization, enzymolysis, precipitation, residue filtering, saccharification and fermentation.

An improved turbine engine topology, wherein the improvement comprises a repositioning, with respect to a conventional intercooled regenerative turbine engine topology, of exhaust gas output from a low pressure turbine stage to a regenerator, to an exhaust gas output from a high pressure turbine stage to the regenerator. The engine topology may additionally employ, as an intermediate stage between the high pressure turbine and the low pressure turbine, a feedback control system, whereby the exhaust gas output from the high pressure turbine stage to the regenerator flows through the feedback control. The engine topology may advantageously also employ an additional cooler and an additional exhaust gas output in the feedback control, whereby exhaust gas flows from the feedback control through the additional cooler to a high pressure compressor stage, or the exhaust gas can flow from the feedback control through a bottoming cycle to the high pressure compressor stage. An exhaust gas condenser may advantageously be placed into the bottoming cycle system. The bottoming cycle / condenser improvements may alternatively be effected an other wise conventional intercooled regenerative turbine engine topology.

A washing method in a washing machine including a semi-drying cycle, in which a spin-drying process and a disentangling process are repeatedly carried out several times in the semi-drying cycle at a speed lower than a spin-drying speed in a main spin-drying cycle. A washing mode involving the semi-drying cycle may be selectively inputted. In accordance with the washing method, wash water is heated in a rinsing cycle. In the semi-drying cycle, the spin-drying process is repeatedly executed at a spin-drying speed gradually increased as the semi-drying cycle progresses. In accordance with the washing method, it is possible to spin-dry the clothes to a water extraction rate of about 55 to 70%, while minimizing damage to the clothes and formation of wrinkles on the clothes.

The invention relates to a new process for extracting high-purity gardenia yellow pigment by a membrane separation and purification technology. The new process comprises processes of purified water leaching, crude separation and impurity removal, membrane separation and purification, and membrane concentration. After purified water extraction and ultrasonic assisted extraction, raw gardenia is separated by three centrifuges with different specifications and then obtained leaching liquor enters a membrane separation, purification and concentration system which consists of a microfiltration membrane (MF), an ultrafiltration membrane (UF), a nano-filtration membrane (NF) and a reverse osmosis membrane (RO), thus an OD value of the obtained gardenia yellow pigment can be controlled below 0.4 and color number can be increased to be more than 400. The finished product obtained by the process has no residual organic solvent and completely meets technical requirements for exporting to developed countries, including Europe and America, etc. as well as developed areas. The process is safe and clean in the whole production process, capable of realizing zero pollution and zero emission, has high environmental protection performance, and has advantages of greatly reducing energy consumption and lowering production cost due to the membrane concentration technology. The process further has advantages of simple process, stable product quality, high purity, etc.

A turbine engine system and a method for using the turbine engine system that includes at least one low-pressure compressor, at least one high-pressure compressor, at least one low-pressure turbine, and at least one high-pressure turbine. In addition, the turbine engine system includes an absorption refrigeration system that is used to pre-cool an air-gas mixture before it enters the high-pressure compressor. As such, the pre-cooled mixture is easier to compress, thereby increasing the thermal efficiency of the turbine engine. Additionally, the exhaust heat from the air-gas mixture that is pre-cooled may be used to drive the absorption refrigeration system. Lastly, water, may be extracted from the evaporator of the absorption refrigeration cycle.

A process is provided for producing glucose and other fermentable sugars from a liquid mixture containing anhydrosugars. One example of a process encompasses: 1) water extraction of a anhydrosugar-rich fast-pyrolysis bio-oil fraction that constitutes a residual after removal of volatile impurities, 2) further purification of said anhydrosugar-rich fraction, and 3) solid-phase catalytic hydrolysis of the anhydrosugars to yield glucose and other fermentable sugars. An exemplary application of the process is in the production of ethanol and other sugar-based fermentation products from bio-oil generated via fast pyrolysis of low-cost, high-availability lignocellulosic biomass resources.

The invention discloses a method for sequentially extracting tea saponin and tea seed oil from oil-tea camellia seeds. A biological enzymatic hydrolysis method is firstly adopted for extracting tea saponin from shelled oil-tea camellia seed powder, and a water extraction method is further adopted for extracting the tea seed oil from desaponification residues. The process for extracting the tea saponin through the biological enzymatic hydrolysis method comprises the steps of cleaning, husking, crushing, fixing, homogenizing, performing enzymatic hydrolysis, performing coarse filtration through plate-frame filter cloth, and performing fine filtration through a miccroporous membrane. The process for extracting the tea seed oil through the water extraction method comprises the steps of ultrasonic vibration extraction and centrifugal separation. According to the method, the extraction efficiency of the tea saponin can be more than 90%, and the extraction efficiency of the tea seed oil can be more than 90%. The whole process flow is performed at low temperature, so that natural activity of the tea saponin, as well as vitamin E, phytosterol, squalene, natural flavor ingredients and the like in the tea seed oil are effectively protected. The foaming property and foam stability of the tea saponin prepared by the process are better in comparison with a traditional extraction method, the prepared tea seed oil has excellent quality, and the national pressed first-class tea seed oil standard can be achieved only by simple refining.

The invention discloses a novel preparation method for a pinellia stomach-harmonizing Chinese patent medicine. The Chinese patent medicine is prepared by performing microwave heating and ultrasonic mixing on ginger processed pinellia, Baikal skullcap root, honey-fried licorice root, jujube, dried ginger, coptis and pilose asiabell root to extract active ingredients in the medicinal materials. The method radically overcomes the defect of low extraction rate of active ingredients extracted by common methods such as water extraction and ethanol extraction in most conventional Chinese medicines. The method avoids discomfort caused by decocting the Chinese medicaments, and can greatly extract the active ingredients of the medicaments such as baicalin, saponin and various trace elements particularly by organically combining the processes of microwave and ultrasonic mixing extraction and the like. Moreover, the extraction purity is high, the loss of the active ingredients is low, and the problem of preventing the active ingredients of the extracts from being volatilized in the industry is solved. The prepared medicine has a remarkable treatment effect, has the effects of soothing liver and regulating qi, harmonizing stomach and reducing heat, tonifying stomach and nourishing yin, harmonizing stomach and dispersing blood stasis, has good compliance, and is suitable for various stomach disease patients to administrate.

The multifunctional pig feed additive of Chinese herbal medicine is prepared with Chinese medicinal materials, including eucommia leaf, privet fruit, astragalus root, haw, and coix seed in certain weight proportion, and through weighing, crushing and mixing, alcohol extraction, water extraction, concentrating alcohol extracted liquid, concentrating water extracted liquid, mixing concentrated alcohol extracted liquid and concentrated water extracted liquid, spray drying to obtain Chinese medicine powder and sealed packing. The present invention has the advantages of raising the pig production efficiency, lowering pig raising cost, raising pigí»s immunity and stress resistance, reducing pigí»s diseases, improving pork meat quality, etc.

The invention relates to a dendrobium stem effervescent agent, which belongs to the fields of medicines and health products. The components of the dendrobium stem effervescent agent comprise dendrobium stem extractum powder, a disintegrating agent and a lubricant, etc.; a flavoring agent and a color toner can be added to adjust the taste and color; the components generally comprise 12 to 18 percent of the dendrobium stem extractum powder, the disintegrating agent including 15 to 30 percent of an acid and 40 to 60 percent of an alkaline agent, 2 to 5 percent of the lubricant, 0 to 10 percent of a sweeting agent and 0 to 5 percent of an aromatizer according to the mass ratio. The dendrobium steam extractum powder is preared by adopting the processes such as water extraction, alcohol precipitation, spray drying, and the like, and is made into the dendrobium stem effervescent agent with other adjuvants by adopting the direct powder tabletting method. The dendrobium stem effervescent agent is characterized by convenient taking, high bioavailability, good taste, easy acceptance, etc.

The invention relates to a method for extracting chlorogenic acid from honeysuckle by using a compound enzyme method and researches a novel process for extracting a main medicinal effective component of the chlorogenic acid from the honeysuckle by a cellulose and pectinase compounding enzyme method. Through a single factor experiment and an orthogonal test, optimal process conditions for extracting the chlorogenic acid from the honeysuckle by using the compound enzyme method can be optimized: the enzymolysis temperature is 45DEG C, the pH is 4.5, the compound ratio of the cellulose to the pectinase is 1.0:0.3 and the enzymolysis time is 1.5 hours. The test result shows that the process repeatability is favorable and the result is stable. The extraction rate of the chlorogenic acid extracted from the honeysuckle by using the compound enzyme method can reach 83.06 percent which is improved by 16.93 percent in comparison with the extraction rate of the chlorogenic acid extracted by using a water extraction process.

A system for resource usage optimization employs an automatically controlled sensor suite providing data to a computer system for the analysis of spatial relationships of the sensors and resources. A control module incorporates an interactive logic, in an exemplary embodiment of well-stream coupled dynamic or game theory engines, operating in conjunction with the spatial data processing algorithms, GIS in an exemplary embodiment, receives as an input an objective function set for the use of the resource and constraint sets which are then monitored by the sensor suite. Incoming data is compared to the constraint sets and upon impact to any of the elements of the objective function set, creates a report / alarm for action or to trigger a corrective action.

Flame retardant systems containing brominated flame retardants and chlorinated flame retardants with synergists and char formers are incorporated into wood-filled resins in combination with compatibilizers to enhance physical properties and to increase water extraction resistance and long term durability. Desirable embodiments of the invention relate to brominated and chlorinated flame retardant additives, synergists, and char formers for use in resins, including polyolefins, fillers, wood-filled polyolefins, in particular wood-filled polyolefins comprising over 20% wood flour, in combination with compatibilizers and methods of use of the flame retardants and fillers. The invention includes methods of making and using the composition.

The invention discloses a method for fast characterizing the compost maturity, which belongs to the field of solid organic waste material treatment. The method comprises the following steps: collecting 1g samples for preparing compost water extraction liquid; testing the DOC of the compost water extraction liquid; diluting the compost water extraction liquid until the DOC is lower than 10 mg / L; collecting a three-dimensional fluorescence spectrum EEM spectrogram of the diluted compost water extraction liquid; adopting a DOMFluor toolkit for introducing the collected EEM spectrogram into a database on Matlab 7.0 software for carrying out parallel factor analysis; determining the scores of two ingredients with the excitation / emitting wavelengths of (230 and 330) / 410 and (220 and 280) / 340; then, multiplying the obtained scores by the sample diluting times; and introducing the result into a compost maturity discriminant relation for being used for characterizing the compost maturity. The method can fast monitor the compost maturity at low cost. At the same time, the method does not need chemical reagents during the compost maturity analysis, and only simple pretreatment procedures such as filtration or dilution and the like are needed.