CN111689656A - Method and device for purifying water body by using environment-friendly enzyme - Google Patents

Method and device for purifying water body by using environment-friendly enzyme Download PDF

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Publication number
CN111689656A
CN111689656A CN202010628145.1A CN202010628145A CN111689656A CN 111689656 A CN111689656 A CN 111689656A CN 202010628145 A CN202010628145 A CN 202010628145A CN 111689656 A CN111689656 A CN 111689656A
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fermentation
tank
water
fermentation tank
kitchen waste
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Inventor
王炳伟
孔德洋
张爱国
张孝飞
许静
豆叶枝
张悦清
倪妮
吴文铸
张卫东
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Changzhou Environmental Sanitation Management Division
Nanjing Institute of Environmental Sciences MEE
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Changzhou Environmental Sanitation Management Division
Nanjing Institute of Environmental Sciences MEE
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/342—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/14—Bioreactors or fermenters specially adapted for specific uses for producing enzymes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/36—Means for collection or storage of gas; Gas holders
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/52—Mobile; Means for transporting the apparatus
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/58—Reaction vessels connected in series or in parallel
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02—Stirrer or mobile mixing elements
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M45/00—Means for pre-treatment of biological substances
    • C12M45/02—Means for pre-treatment of biological substances by mechanical forces; Stirring; Trituration; Comminuting
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M45/00—Means for pre-treatment of biological substances
    • C12M45/06—Means for pre-treatment of biological substances by chemical means or hydrolysis
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
    • C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
    • C12P5/023—Methane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention provides a method and a device for purifying a water body by using an environment-friendly enzyme, wherein the method comprises the following steps: s1: crushing the collected kitchen garbage and screening solid impurities in the kitchen garbage, and adding an oil stain degradation agent into the crushed kitchen garbage to decompose oil stains; s2: adding sugar and water into the kitchen waste, then carrying out anaerobic fermentation, and continuously stirring in the fermentation process; s3: and (3) filtering the fermentation liquor to obtain an environment-friendly enzyme solution, storing the environment-friendly enzyme solution in a storage tank, and periodically and quantitatively conveying the environment-friendly enzyme solution to the water body through the bottom of the water body in a dispersing manner. The device comprises a recovery device for recovering the pretreated kitchen waste, a fermentation tank for anaerobic fermentation of the kitchen waste, a storage tank for storing an environment-friendly enzyme solution and a biogas collection device. In a word, the invention has the advantages of novel structure, perfect method, environmental protection, high efficiency, low cost and the like.

Description

Method and device for purifying water body by using environment-friendly enzyme
Technical Field
The invention belongs to the technical field of water body purification, and particularly relates to a method and a device for purifying a water body by using an environment-friendly enzyme.
Background
The environment-friendly ferment is one kind of ferment, is brown liquid produced by anaerobic fermentation of kitchen wastes (fresh garbage) mixed with sugar and water, and has good environment-friendly effects of purifying a sewer, purifying air and the like. Enzymes, in fact, are old translations of enzymes. Enzymes are biological macromolecules with biocatalytic functions, i.e. biocatalysts, which are capable of accelerating biochemical reactions without changing the direction and products of the reactions. That is, enzymes can be used to accelerate various types of biochemical reactions, but not the biochemical reaction itself. The production process does not use any chemical synthesis substance; in the brewing process, the components are integrated and mutually promoted to form a complex and stable ferment ecosystem with multiple functions, and the activities of harmful microorganisms, especially pathogenic bacteria and putrefactive bacteria can be inhibited. The ferment is simple and easy to be made, and is widely applied to the aspects of home furnishing, agriculture or breeding industry and the like.
In the application of the environment-friendly enzymes, people find that the environment-friendly enzymes have a remarkable effect on water purification, but because the water body lake is often large in area, the environment-friendly enzymes need to be added into the water body for a long time, and the fermentation period of the environment-friendly enzymes is long, so that how to stably add the environment-friendly enzymes into the water body for a long time is a difficult problem in the prior art, and the invention provides a method and a device for purifying the water body by using the environment-friendly enzymes.
Disclosure of Invention
In order to solve the problems, the invention provides a method and a device for purifying a water body by using an environment-friendly enzyme.
The technical scheme of the invention is as follows: a method for purifying a water body by using an environment-friendly enzyme mainly comprises the following steps:
s1: raw material collection and pretreatment
Independently arranging a recovery device for collecting kitchen waste as a fermentation raw material at a waste throwing point beside a water body, crushing the collected kitchen waste and screening solid impurities in the kitchen waste, weighing the crushed kitchen waste, adding an oil stain degrading agent into the kitchen waste according to the weight of the kitchen waste, decomposing oil stains in the kitchen waste, and conveying the treated kitchen waste into a fermentation tank;
s2: preparation of environment-friendly enzyme
Continuously adding sugar and water into the fermentation tank, wherein the mass ratio of the sugar to the water to the kitchen waste is 1:10:2, sealing the fermentation tank, fully stirring to dissolve the sugar in the water, sealing the fermentation tank, performing anaerobic fermentation, pressing the kitchen waste floating on the water surface into the water, continuously stirring in the fermentation process, releasing gas in the fermentation process to increase the pressure in the fermentation tank, discharging the gas in the fermentation tank when the pressure reaches a set critical value, and continuously fermenting for 30-45 d;
s3: environment-friendly enzyme adding device
The method comprises the steps of filtering fermentation liquor after fermentation in a fermentation tank is completed to obtain an environment-friendly enzyme solution, storing the environment-friendly enzyme solution into a storage tank, and carrying out dispersion conveying on the environment-friendly enzyme solution to a water body through the bottom of the water body by the storage tank at regular time and in a quantitative manner to purify the water body.
Further, in the fermentation process of S2, kitchen waste can be added into the fermentation tank for multiple times, sugar and water in the proportion are added into the fermentation tank at the same time, the kitchen waste is not added into the fermentation tank until the effective volume in the fermentation tank is less than 20%, the fermentation time is calculated according to the last addition of the kitchen waste, and the waste of the volume in the fermentation tank caused by the insufficient amount of the kitchen waste in a single time is avoided.
Further, the gas discharged from the fermentation tank in the step S2 is processed and collected to obtain the biogas which can be used for gas supply or power generation, so that not only can usable energy be obtained, but also the pollution caused by directly discharging the fermentation gas to the air is avoided.
Further, the residue generated by filtering in the step S3 is mechanically dehydrated and then crushed into particles, so that the environment-friendly enzyme solid particles which can be used for dredging pipelines or used as fertilizers are obtained, the environment-friendly enzyme solid particles can be reused, and the trouble of continuously treating the residue is avoided.
The device used in the method for purifying the water body by using the environment-friendly ferment mainly comprises a recovery device, a fermentation tank, a storage tank and a methane collection device,
the recycling device comprises a feeding port for feeding kitchen waste, a crushing and screening device for crushing the fed kitchen waste and screening solid impurities in the kitchen waste, a collecting tank for receiving the crushed kitchen waste, a weighing sensor arranged at the bottom of the collecting tank and used for weighing the weight of the kitchen waste, and an oil stain decomposing agent tank connected above the collecting tank and used for adding an oil stain degrading agent into the collecting tank,
the fermentation tank is communicated with the collecting tank through a conveying pipe and is used for receiving the processed kitchen garbage, the fermentation tank comprises a water storage tank and a sugar storage tank which are used for respectively adding water and sugar into the fermentation tank, a stirring device used for stirring objects in the fermentation tank, a pressure sensor arranged on the inner wall of the fermentation tank and used for monitoring the gas pressure in the fermentation tank, and a pressure release valve communicated with an exhaust port at the upper end of the fermentation tank and used for discharging gas generated by fermentation,
the storage tank is respectively connected with the fermentation tank through a conveying pipe and is used for storing the environment-friendly ferment solution obtained by fermentation, the storage tank comprises a pressure pump for pumping the environment-friendly ferment solution into a water body and a controller for controlling the working time of the pressure pump and the single pumping amount,
the biogas collecting device is communicated with the pressure release valve and is used for collecting and treating biogas generated by fermentation of kitchen garbage in the fermentation tank.
Further, throw material mouthful department and be equipped with through the automatic closed sealed lid of torsion spring, and the dog-house top is equipped with the prompting device, the prompting device is used for the surplus rubbish classification in kitchen that the suggestion can prepare the environmental protection ferment, and the smell that the rubbish distributes in kitchen can be avoided to automatic closed sealed lid to lose to the air, and the prompting device can remind throwing the throwing personnel, avoids preparing the environmental protection ferment and even throws into recovery unit to the rubbish that the environmental protection ferment prepared to have the inhibitory action with throwing.
Further, the fermentation cylinder is equipped with a plurality ofly, every fermentation cylinder all with collection tank, storage jar are connected, and the outside of fermentation cylinder is equipped with and is used for avoiding the fermentation cylinder to be used for avoiding the protection box of sunshine direct injection, because fermentation period overlength, a plurality of fermentation cylinders can satisfy circulation fermentation and use.
Further, agitating unit including setting up the motor in fermentation tank bottom, set up in the fermentation tank inside and with motor output shaft's pivot, the pivot lower extreme is equipped with stirring vane, and the clamp plate has been cup jointed in the activity of pivot upper end, the clamp plate is pressed the rubbish after kitchen that will float on the surface of water into the aquatic through the action of gravity, is equipped with the aperture that can pass through liquid on the clamp plate, can make its fermentation more rapid with the rubbish after kitchen impressed the aquatic.
The working principle of the device is as follows: the resident puts the kitchen garbage which can prepare the environment-friendly enzyme into the recovery device through a feeding port of the recovery device according to the prompt of the prompter, the kitchen garbage enters a collecting tank after being processed by a crushing and screening device, a weighing sensor weighs the kitchen garbage, an oil stain decomposing agent is added into an oil stain decomposing agent tank according to the weight of the oil stain decomposing agent tank to decompose oil stains in the kitchen garbage into nutrient substances required by fermentation, the kitchen garbage after being decomposed is conveyed into a fermentation tank, a water storage tank and a sugar storage tank respectively add water and sugar in a certain proportion into the fermentation tank to seal the fermentation tank for anaerobic fermentation, the stirring device continuously stirs in the fermentation process, a pressing plate presses the kitchen garbage floating on the water surface into the water under the action of gravity to ferment, gas is generated in the fermentation process, a pressure relief valve is opened when the pressure sensor monitors that the pressure reaches a critical value, the fermented gas is introduced into a methane collecting device to be collected, can add kitchen garbage to the fermentation cylinder many times among the fermentation process, after effective volume is less than 20% in the fermentation cylinder, no longer add kitchen garbage to the fermentation cylinder, the fermentation time calculates according to adding kitchen garbage last time, the filtration obtains environmental protection ferment solution and environmental protection ferment residue after the fermentation is accomplished, environmental protection ferment solution is through storage jar storage, and regularly, the ration sprays to the water bottom through the force (forcing) pump, environmental protection ferment residue smashes to the graininess after mechanical dehydration, obtain the environmental protection ferment solid particle that can be used to dredge the pipeline or use as fertilizer.
The invention has the beneficial effects that: the invention provides a method and a device for purifying a water body by utilizing an environment-friendly enzyme, which are characterized in that a recovery device is arranged beside the water body to continuously recover kitchen waste required by preparing the environment-friendly enzyme, materials are taken nearby, the transportation cost is saved, an oil stain decomposing agent tank is arranged in the recovery device to decompose oil stains inevitably existing in the kitchen waste into nutrient substances required by fermentation, so that pollution of the oil stains to the preparation of the environment-friendly enzyme is avoided, the nutrient substances are provided, a plurality of fermentation tanks are arranged beside the water body, the kitchen waste can be added into the fermentation tanks for a plurality of times in the fermentation process, the waste of the effective volume of the fermentation tanks caused by insufficient fermentation of the kitchen waste is avoided, a pressing plate is arranged in the fermentation tanks, the kitchen waste floating in the water can be pressed into the water by the action of gravity, the fermentation rate is improved, and a methane collecting device is arranged, the gas that produces among the fermentation process is collected, has both obtained usable energy, has avoided the gaseous direct row of fermentation to cause the pollution to the air again, has still set up the storage jar that the storage fermentation obtained environmental protection ferment solution, and environmental protection ferment solution sprays into the water bottom through the force (forcing) pump, can break away the water deposit thing, improves purifying effect. In a word, the invention has the advantages of novel structure, perfect method, environmental protection, high efficiency, low cost and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention.
The system comprises a recovery device 1, a feed port 11, a sealing cover 111, a prompting device 112, a crushing and screening device 12, a collecting tank 13, a weighing sensor 131, an oil stain decomposing agent tank 132, a fermentation tank 2, a protective box 20, a water storage tank 21, a sugar storage tank 22, a stirring device 23, a motor 231, a rotating shaft 232, stirring blades 233, a pressing plate 24, a pressure sensor 25, a pressure relief valve 26, a storage tank 3, a pressure pump 31, a controller 32 and a biogas collecting device 4.
Detailed Description
For the convenience of understanding the technical solution of the present invention, the following description is made with reference to fig. 1 and the specific embodiments, which are not intended to limit the scope of the present invention.
Example 1: a method for purifying a water body by using an environment-friendly enzyme mainly comprises the following steps:
s1: raw material collection and pretreatment
Independently arranging a recovery device 1 for collecting kitchen waste as a fermentation raw material at a waste throwing point beside a water body, crushing the collected kitchen waste and screening solid impurities in the kitchen waste, weighing the crushed kitchen waste, adding a COD (chemical oxygen demand) oil stain degradation remover into the kitchen waste according to the weight of the kitchen waste, wherein the weight ratio of the COD oil stain degradation remover to the kitchen waste is 1:50, decomposing oil stains in the kitchen waste, and conveying the treated kitchen waste into a fermentation tank 2;
s2: preparation of environment-friendly enzyme
Continuously adding sugar and water into the fermentation tank 2, wherein the mass ratio of the sugar to the water to the kitchen waste is 1:20:5, the sugar is brown sugar, sealing the fermentation tank 2, fully stirring to dissolve the sugar in the water, sealing the fermentation tank 2, then carrying out anaerobic fermentation, pressing the kitchen waste floating on the water surface into the water, continuously stirring in the fermentation process, releasing gas in the fermentation process to increase the pressure in the fermentation tank 2, discharging the gas in the fermentation tank 2 when the pressure reaches a critical value of 50KPa, continuously fermenting for 45d, adding the kitchen waste into the fermentation tank 2 for multiple times in the fermentation process, simultaneously adding the sugar and the water in the proportion into the fermentation tank 2 until the effective volume in the fermentation tank 2 is 20%, then not adding the kitchen waste into the fermentation tank 2 any more, starting the fermentation time according to the last addition of the kitchen waste, treating and collecting the gas discharged from the fermentation tank 2, obtaining methane which can be used for gas supply or power generation;
s3: environment-friendly enzyme adding device
Filtering fermentation liquor obtained after fermentation in the fermentation tank 2 to obtain an environment-friendly enzyme solution, storing the environment-friendly enzyme solution into a storage tank 3, adding 60kg of the environment-friendly enzyme solution into a water body through a water body bottom dispersion pump according to the amount of adding every 3 days in the storage tank 3, purifying the water body, mechanically dehydrating residues generated by filtering, and crushing the residues into particles to obtain environment-friendly enzyme solid particles which can be used for dredging pipelines or used as fertilizers.
As shown in figure 1, the above embodiment provides a device used in the method, which mainly comprises a recovery device 1, a fermentation tank 2, a storage tank 3 and a biogas collection device 4,
the recycling device 1 comprises a feeding port 11 for feeding kitchen waste, a sealing cover 111 which is automatically closed through a torsion spring is arranged at the feeding port 11, a prompter 112 is arranged above the feeding port 11, the prompter 112 is used for prompting the kitchen waste category capable of preparing environment-friendly enzymes, a crushing and screening device 12 for crushing the fed kitchen waste and screening solid impurities in the kitchen waste, a collecting tank 13 for receiving the crushed kitchen waste, a weighing sensor 131 which is arranged at the bottom of the collecting tank 13 and is used for weighing the weight of the kitchen waste, and an oil stain decomposing agent tank 132 which is connected above the collecting tank 13 and is used for adding an oil stain degrading agent into the collecting tank 13,
the fermentation tank 2 is provided with a plurality of fermentation tanks 2, the fermentation tank 2 is communicated with the collecting tank 13 through a conveying pipe and is used for receiving the processed kitchen garbage, the fermentation tank 2 comprises a water storage tank 21 and a sugar storage tank 22 which are used for respectively adding water and sugar into the fermentation tank 2, a stirring device 23 which is used for stirring objects in the fermentation tank 2, the stirring device 23 comprises a motor 231 which is arranged at the bottom of the fermentation tank 2, a rotating shaft 232 which is arranged in the fermentation tank 2 and is connected with an output shaft of the motor 231, the lower end of the rotating shaft 232 is provided with a stirring blade 233, the upper end of the rotating shaft 232 is movably sleeved with a pressing plate 24, the pressing plate 24 presses the kitchen garbage floating on the water surface into the water through the action of gravity, the pressing plate 24 is provided with a small hole which can pass through liquid, a pressure sensor 25 which is arranged on the inner wall of, the outer side of the fermentation tank 2 is provided with a protective tank body 20 for preventing the fermentation tank 2 from being directly irradiated by sunlight,
the storage tanks 3 are respectively connected with the fermentation tank 2 through delivery pipes and are used for storing the environment-friendly ferment solution obtained by fermentation, the storage tanks 3 comprise a pressure pump 31 for pumping the environment-friendly ferment solution into a water body and a controller 32 for controlling the working time of the pressure pump 31 and the single pumping amount,
the biogas collecting device 4 is communicated with the pressure release valve 26 and is used for collecting and processing biogas generated by fermenting kitchen waste in the fermentation tank 2.
The working principle of the above embodiment is as follows: a resident puts kitchen garbage capable of preparing environment-friendly enzyme into the recovery device 1 through the feeding port 11 of the recovery device 1 according to the prompt of the prompt 112, the kitchen garbage enters the collecting tank 13 after being processed by the crushing and screening device 12, the weighing sensor 131 weighs the kitchen garbage, the oil stain decomposing agent tank 132 adds oil stain decomposing agent according to the weight of the oil stain decomposing agent tank to decompose oil stains in the kitchen garbage into nutrient substances required by fermentation, the kitchen garbage after being decomposed is conveyed into the fermentation tank 2, the water storage tank 21 and the sugar storage tank 22 respectively add water and sugar with a certain proportion into the fermentation tank 2, the fermentation tank 2 is sealed for anaerobic fermentation, the stirring device 23 continuously stirs in the fermentation process, the pressing plate 24 presses the kitchen garbage floating on the water surface into the water under the action of gravity to ferment, gas is generated in the fermentation process, the pressure in the fermentation tank 2 is increased, the pressure release valve 25 is opened 26 when the pressure sensor monitors that the pressure reaches a critical value, let in fermentation gas and collect the processing in marsh gas collection device 4, can add kitchen garbage to fermentation cylinder 2 many times among the fermentation process, effective volume is 20% after up to in the fermentation cylinder 2, no longer to adding kitchen garbage in the fermentation cylinder 2, the fermentation time works out according to last kitchen garbage that adds, the filtration obtains environmental protection ferment solution and environmental protection ferment residue after the fermentation is accomplished, environmental protection ferment solution is through storage jar 3 storage, and regularly through force (forcing) pump 31, the ration is to the injection of water bottom, environmental protection ferment residue smashes to the graininess after mechanical dehydration, obtain the environmental protection ferment solid particle that can be used to dredge the pipeline.
Example 2: example 2 is essentially the same as example 1, except that:
in S1, the weight ratio of the COD oil stain degradation remover to the kitchen garbage is 1: 80.
As a result: in the embodiment 1, the degradation rate of the oil stains in the kitchen garbage is 98%, and the oil stains in the kitchen garbage do not have obvious influence on the fermentation process;
in example 2, the oil stain degradation rate is 93%, and the residual oil stains have a small influence on the fermentation process, which is specifically indicated that the environment-friendly ferment obtained after the fermentation is completed has a slight odor.
And (4) conclusion: the oil stains in the kitchen garbage can influence the fermentation process, and the weight ratio of the COD oil stain degradation remover to the kitchen garbage is 1:50, so that the effect can be avoided.
Example 3: example 3 is essentially the same as example 1, except that:
in S2, the sugar is sucrose, the mass ratio of the sugar to the water to the kitchen garbage is 1:20:7, and the fermentation time is 30 d.
As a result: the yield of the green ferment in example 1 is 1.3 times that in example 3.
And (4) conclusion: the sugar is used as a nutrient substance, the adding amount can influence the yield of the environment-friendly ferment, and the short fermentation time can also influence the yield of the environment-friendly ferment.
Example 4: example 4 is essentially the same as example 1, except that:
in S3, 80kg of the environmental-friendly enzyme solution is added into the water body through a water body bottom dispersion pump every 3 days in the storage tank 3.
As a result: according to the dosage in the embodiment 1, the water body is completely purified after 6 months, and according to the dosage in the embodiment 4, the water body is purified after only 4 months.
And (4) conclusion: on the premise of sufficient yield, the more the addition amount of the environment-friendly enzymes is, the higher the water body purification rate is, and through experiments, when 130kg of the environment-friendly enzymes are added into the water body every 2 days, the water body purification rate reaches the highest peak value.
Example 5: example 5 is essentially the same as example 1, except that:
and using the finally obtained environment-friendly ferment solid particles as a fertilizer.

Claims (8)

1. A method for purifying a water body by using an environment-friendly enzyme is characterized by mainly comprising the following steps:
s1: raw material collection and pretreatment
Independently arranging a recovery device (1) for collecting kitchen waste as a fermentation raw material at a waste throwing point beside a water body, crushing the collected kitchen waste and screening solid impurities in the kitchen waste, weighing the crushed kitchen waste, adding an oil stain degrading agent into the kitchen waste according to the weight of the kitchen waste, decomposing oil stains in the kitchen waste, and conveying the treated kitchen waste into a fermentation tank (2);
s2: preparation of environment-friendly enzyme
Continuously adding sugar and water into the fermentation tank (2), sealing the fermentation tank (2), fully stirring to dissolve the sugar in the water, sealing the fermentation tank (2), performing anaerobic fermentation, pressing kitchen garbage floating on the water into the water, continuously stirring in the fermentation process, releasing gas in the fermentation process to increase the pressure in the fermentation tank (2), discharging the gas in the fermentation tank (2) when the pressure reaches a set critical value, and continuously fermenting for 30-45 d;
s3: environment-friendly enzyme adding device
The fermentation liquid that accomplishes fermentation in the fermentation cylinder (2) is filtered and is obtained environmental protection ferment solution, preserves to storage jar (3) in, storage jar (3) are regularly, quantitative carry environmental protection ferment solution to the water through water bottom dispersion in, purify the water.
2. The method for purifying water body with green ferment as claimed in claim 1, wherein the gas discharged from the fermentation tank (2) in S2 is processed and collected to obtain biogas for gas supply or power generation.
3. The method for purifying water by using green enzyme as claimed in claim 1, wherein the residue from the filtration of S3 is mechanically dehydrated and then pulverized into particles, so as to obtain the green enzyme solid particles for dredging pipes or being used as fertilizer.
4. A device for purifying water by using environment-friendly ferment is characterized by mainly comprising a recovery device (1), a fermentation tank (2), a storage tank (3) and a methane collection device (4),
the recycling device (1) comprises a feeding port (11) for feeding kitchen waste, a crushing and screening device (12) for crushing and screening the fed kitchen waste into solid sundries, a collecting tank (13) for receiving the crushed kitchen waste, a weighing sensor (131) arranged at the bottom of the collecting tank (13) and used for weighing the weight of the kitchen waste, and an oil stain decomposing agent tank (132) connected above the collecting tank (13) and used for adding an oil stain degrading agent into the collecting tank (13),
the fermentation tank (2) is communicated with the collecting tank (13) through a conveying pipe and used for receiving the well-treated kitchen garbage, the fermentation tank (2) comprises a water storage tank (21) and a sugar storage tank (22) which are used for respectively adding water and sugar into the fermentation tank (2), a stirring device (23) which is used for stirring objects in the fermentation tank (2), a pressure sensor (25) which is arranged on the inner wall of the fermentation tank (2) and used for monitoring the gas pressure in the fermentation tank (2), and a pressure release valve (26) which is communicated with an exhaust port at the upper end of the fermentation tank (2) and used for discharging fermentation generated gas,
the storage tank (3) is respectively connected with the fermentation tank (2) through a conveying pipe and used for storing the environment-friendly ferment solution obtained by fermentation, the storage tank (3) comprises a pressure pump (31) used for pumping the environment-friendly ferment solution into a water body and a controller (32) used for controlling the working time of the pressure pump (31) and the single pumping amount,
the biogas collecting device (4) is communicated with the pressure release valve (26) and is used for collecting and processing biogas generated by fermentation of kitchen garbage in the fermentation tank (2).
5. The apparatus for purifying water body with green ferment as claimed in claim 4, wherein a sealing cover (111) automatically closed by a torsion spring is disposed at the feeding port (11), and a reminder (112) is disposed above the feeding port (11), the reminder (112) is used for reminding the kitchen garbage category for preparing the green ferment.
6. The device for purifying water by using green ferment as claimed in claim 4, wherein a reminder (112) is disposed above the feeding port (11), the reminder (112) is used for reminding kitchen garbage classification for preparing green ferment.
7. The apparatus for purifying water with green ferments according to claim 4, wherein the fermentation tank (2) is provided with a plurality of fermentation tanks, each fermentation tank (2) is connected to the collecting tank (13) and the storage tank (3), and a protection box (20) for preventing the fermentation tank (2) from being directly irradiated by sunlight is provided outside the fermentation tank (2).
8. The device for purifying water by using environmental-friendly ferment as claimed in claim 4, wherein the stirring device (23) comprises a motor (231) arranged at the bottom of the fermentation tank (2), a rotating shaft (232) arranged inside the fermentation tank (2) and connected with an output shaft of the motor (231), a stirring blade (233) is arranged at the lower end of the rotating shaft (232), a pressing plate (24) is movably sleeved at the upper end of the rotating shaft (232), the pressing plate (24) presses kitchen waste floating on the water surface into the water by gravity, and a small hole through which liquid can pass is arranged on the pressing plate (24).
CN202010628145.1A 2020-05-26 2020-07-01 Method and device for purifying water body by using environment-friendly enzyme Pending CN111689656A (en)

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