CN114988926A - Organic compound fertilizer produced by eighty percent of sludge with water content and manufacturing method thereof - Google Patents

Abstract

The invention relates to a method for producing organic compound fertilizer by eighty sludge with water content percentage, which comprises the steps of uniformly mixing sludge with water content of 80%, fly ash, agricultural wastes, quick lime, ferrous sulfate, magnesium sulfate, polyacrylamide and chlorine dioxide, conveying the mixture to a sealed high-temperature fermentation machine by a belt conveyer, raising the temperature in the fermentation machine to 100 ℃ through oil-electricity heat conduction, keeping the temperature for 2 hours for power off, keeping the temperature at 60 ℃, adding thermophilic active compound bacteria for fermentation, adjusting a stirring system of the fermentation machine to an intermittent stirring function, and effectively killing harmful microorganism, egg, weed seeds and pathogenic bacteria in the sludge when the sludge is fermented in the fermentation machine for 12 hours; aging, crushing and screening the fermented clinker to prepare powder, and packaging the powder by an automatic electronic weighing and packaging machine to prepare an organic compound fertilizer product; thereby solving the sludge treatment problem of 80 percent of water content, realizing the resource utilization of the sludge and reducing the pollution to the natural environment.

Description

Organic compound fertilizer produced by eighty percent of sludge with water content and manufacturing method thereof

Technical Field

The invention relates to an organic compound fertilizer produced by eighty sludge with percentage of water content and a manufacturing method thereof, in particular to an organic compound fertilizer which is prepared by mechanically and fully automatically carrying out high-temperature quick fermentation, disinfection and sterilization, aging, drying, crushing and screening on municipal sludge, belonging to the field of waste treatment.

Background

Sludge which is domestic sewage generated in daily life of urban residents, institutions, schools and units and mixed sewage generated in rainy days, is collected and discharged to a sewage treatment plant through a municipal pipe network, and is a precipitate generated in the process of treating the sewage by the sewage treatment plant by adopting a physical or chemical method and mixed scum residues floating on the surface of the sewage; the municipal sludge is a solid part in sewage and is a semi-solid waste with high water content between inorganic matters and organic matters in composition; the amount of sludge generated by the primary secondary sewage treatment plant is about 0.005-0.008% of the total amount of treated sewage; with the rapid development of economic society of China, the population of cities and towns continuously increases and the urbanization rate is gradually improved, the centralized water supply and demand of cities also increase year by year, the discharge amount of domestic sewage also gradually rises, and the sludge amount generated after the treatment of sewage treatment plants also rapidly increases.

At present, nearly 80% of sludge in China is not treated by stabilization and harmless treatment, most of sludge is still sent to an urban refuse landfill for simple landfill, the total emission of 0.5 ton of carbon dioxide is generated by 1 ton of wet sludge with water content of 80%, and a large amount of methane is emitted to the environment, the greenhouse effect is tens of times of that of the carbon dioxide, so the secondary pollution is serious; the urban sludge has complex components, high water content and large treatment difficulty, and a large amount of accumulated sludge occupies a large amount of land, and harmful components such as heavy metals, pathogenic bacteria, parasitic ova, organic pollutants and odor in the urban sludge can be a great harm affecting the urban environmental sanitation; particularly, if the heavy metal is not treated and directly buried, the heavy metal can pollute soil and underground water sources, new secondary pollution is easy to generate, and the environment is seriously harmed; the long-term landfill needs to occupy a large amount of land resources, and how to properly and scientifically treat and dispose the municipal sludge to reduce, stabilize, make the municipal sludge harmless and recycle the resources becomes the concern of China and even the world environment, and how to really realize the resource development and utilization and the economic development on the basis of protecting the ecological environment, the comprehensive utilization of the resources is a new ideal route for the treatment and disposal of the municipal sludge.

Disclosure of Invention

The invention aims to solve the problems and provide an organic compound fertilizer produced by sludge with the water content of 80% and a manufacturing method thereof, thereby solving the pollution of the sludge to the environment, also solving the resource recycling of the sludge, changing waste into valuable, changing harm into benefit and realizing the virtuous cyclic utilization of waste resources.

In order to achieve the purpose, on one hand, the invention provides an organic compound fertilizer produced by eighty percent of sludge with water content and a manufacturing method thereof, wherein the organic compound fertilizer is prepared from the following raw materials in parts by weight:

the sludge with the water content of 80 percent is sediments generated in the treatment process of domestic sewage generated by municipal pipe network centralized collection and discharge in daily life of urban residents, institutions, schools and units and mixed sewage generated in raining and scum residues floating on the surface of the sewage, and is the sludge with the water content of 80 percent discharged after being treated by a sewage treatment plant;

the fly ash powder is a volcanic ash-like mixed material formed by high-temperature combustion of coal powder; coal is ground into coal powder with the particle size of less than 100 microns by a thermal power plant, preheated air is sprayed into a hearth to be combusted in a suspended state, high-temperature flue gas mixed with a large amount of non-combustible substances is generated, and the coal powder is obtained by trapping the high-temperature flue gas by a dust collecting device; magnetic separation, drying and screening are carried out to prepare powder with the particle size of less than 0.045 mm;

the agricultural waste powder is waste plants generated in the agricultural production, planting and harvesting processes and comprises the following components: crop wastes such as corn straws, sorghum straws, wheat straws, rice straws, soybean straws, cassava straws, peanut shells and sweet potato vines are prepared into powder with the particle size of less than 5mm after sorting, crushing, drying, grinding and screening;

the quick lime powder is prepared by calcining limestone at high temperature, crushing, sorting, crushing, grinding and screening to obtain powder with the particle size of less than 0.045 mm.

On the other hand, in order to achieve the purpose, the invention also discloses a manufacturing method for producing the organic compound fertilizer by using eighty percent of sludge with water content, the sludge, fly ash powder, agricultural waste powder, quick lime powder, ferrous sulfate, magnesium sulfate, polyacrylamide and chlorine dioxide with water content of 80 percent are mixed and stirred uniformly according to the proportion, wherein: the water content of the mixture is controlled to be 45% -65%, the materials are held by hands to form a cluster without water drops, the materials are loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8;

conveying the sludge to a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ through oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding a sludge special fermentation strain and a thermophilic high-temperature active bacteria composite flora agent in proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, and the sludge is used for killing harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge;

the water vapor generated in the fermentation process is adsorbed by an activated carbon absorption box, and the specific surface area and the adsorption function of the activated carbon are utilized to adsorb and purify trace waste gas in the water vapor, so that the odorless colorless up-to-standard emission is achieved;

the fermented sludge clinker is aged, crushed and screened to prepare powder with the particle size of less than 0.18mm, and then the powder is mixed and stirred with ammonium nitrate, monoammonium phosphate and potassium sulfate to ensure that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation and are widely staggered without dead angles, thereby achieving the purpose of uniformly diffusing and mixing the fertilizer;

and then conveying the uniformly mixed powder to a special storage silo, and packaging the powder by using a full-automatic electronic metering weighing packaging machine system to prepare an organic compound fertilizer powder product or preparing the powder into 3-5 mm particles by using a granulator, drying the particles and packaging the particles to prepare an organic compound fertilizer particle product.

Optionally, the sludge fermentation adopts a mechanical full-automatic high-temperature sealed fermentation device, an oil-separating layer is arranged in the fermentation device, and the fermentation method is a rapid high-temperature fermentation method by utilizing oil-electricity heat conduction for heating.

Optionally, the fermentation strain comprises a sludge-dedicated fermentation strain and a thermophilic high-temperature active bacteria composite microbial agent which are mixed in proportion.

Optionally, the mixing and stirring are carried out uniformly by using a double-shaft humidifying mixing stirrer.

Optionally, the waste gas treatment comprises an activated carbon absorption box and an air booster fan.

Optionally, the method comprises:

taking 65-75 parts by weight of sludge with water content of 80%, 25-35 parts by weight of fly ash powder, 28-38 parts by weight of agricultural waste powder, 6-8 parts by weight of quick lime powder, 15-20 parts by weight of ferrous sulfate, 16-28 parts by weight of magnesium sulfate, 6-9 parts by weight of polyacrylamide and 6-9 parts by weight of chlorine dioxide, and uniformly mixing and stirring by adopting a double-shaft humidifying stirrer, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8;

conveying the sludge to a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ through oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding 0.01-0.05 weight part of sludge special fermentation strain and 0.02-0.06 weight part of thermophilic high-temperature active bacteria composite flora agent according to the proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, simultaneously activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, and the sludge is used for killing harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge;

the water vapor generated in the fermentation process is adsorbed by an activated carbon absorption box, and the specific surface area and the adsorption function of the activated carbon are utilized to adsorb and purify trace waste gas in the water vapor, so that the odorless colorless up-to-standard emission is achieved;

aging, crushing and screening the fermented sludge clinker to prepare powder with the particle size of less than 0.18mm, taking 5-8 parts by weight of ammonium nitrate, 4-8 parts by weight of monoammonium phosphate and 5-8 parts by weight of potassium sulfate, and mixing and stirring by adopting a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation, and the comprehensive compound circulation is carried out in a widely staggered manner without dead corners, thereby achieving the purpose of uniformly diffusing and mixing the fertilizer;

and then conveying the uniformly mixed powder to a special storage silo, and packaging the powder by using a full-automatic electronic metering and weighing packaging machine system to prepare an organic compound fertilizer powder product or granulating the powder into 3-5 mm particles by using a granulator, drying and packaging the particles to prepare the organic compound fertilizer particle product.

The invention relates to a method for producing organic compound fertilizer by using sludge with water content of 80 percent and a manufacturing method thereof, which adopts a mechanized full-automatic high-temperature sealed fermentation device, the high temperature in the device comes from the principle of heating oil by electricity, and an oil-separating layer (in-layer electric hot oil) is arranged in the device and is subjected to high-temperature quick fermentation by utilizing oil electricity to conduct heat, so that the temperature can be quickly increased to 80-100 ℃; harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge are effectively killed by using the high temperature of 100 ℃; the rapid degradation of organic matters in the sludge and the formation of humus are accelerated by utilizing the activity function of the thermophilic compound flora; the fermentation time of the whole sludge in the fermentation machine is shortened to 8-12 hours, and the fermented sludge clinker is aged, crushed and screened to prepare mixed powder with the particle size of less than 0.18mm, so that the organic compound fertilizer product which is stable, rotten, cured and harmless is produced; creates a new treatment approach for the treatment and disposal of the sludge and also creates a good favorable foundation for the resource comprehensive utilization of the sludge.

The sludge is a semi-solid or solid substance generated in the sewage treatment process of a town sewage treatment plant; the treatment and disposal of the sludge are important components of the town sewage treatment system; the sludge treatment follows the principle of source reduction and whole process control, an appropriate sludge treatment process is selected according to the final safe treatment requirement and the characteristics of the sludge, and the sludge treatment is implemented with the aim of realizing the reduction, stabilization and harmlessness of the sludge; encourages recovery and utilization of energy and resources in the sludge; realizes the treatment and the comprehensive utilization of resources of the sludge on the premise of safety, ecological environmental protection and economic benefit, and achieves the purposes of energy conservation, emission reduction and development of circular economy.

The invention aims to overcome the defects of the existing sludge treatment technology, and aims at the new national regulation related to urban sludge treatment, and the invention provides a new technology for quickly treating sludge with water content of 80% at high temperature; a microbial agent prepared by mixing, domesticating, culturing and reactivating a plurality of high-quality microbial strains and enzymes is used as a rapid leavening agent of sludge, and is an activating microbial inoculum capable of rapidly fermenting and decomposing; the microbial agent is a universal compound flora agent and contains various special-function photosynthetic bacteria, azotobacter, phosphate-solubilizing potassium-solubilizing bacteria, colloidal bacillus, bacillus subtilis, lactobacillus, saccharomycetes, high-temperature-resistant actinomycetes and other microorganisms; the microbial inoculum is mixed, fermented and compounded together, is not antagonistic and can be cooperated with each other, and is a compound microbial fermentation strain; the effective viable count is more than 15 hundred million/g and can reach more than 20 hundred million/g at most; the functions are comprehensive, and the fermentation liquor can be added into sludge organic materials, has good effects of rapid heating, deodorization, dehydration and decomposition, is suitable for rapidly treating sludge with water content of 80 percent, and is a high-temperature and quick-acting fermentation technology; adopting mechanized full-automatic control high-temperature sealed fermentation equipment, wherein the high temperature in the equipment comes from the principle of electric heating, and a high-temperature rapid fermentation method of conducting heat by using oil electricity can enable the temperature to rise to 80-100 ℃ rapidly; harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge are effectively killed by using the high temperature of 100 ℃; the fermentation time of the whole sludge in the fermentation machine is shortened to 8 to 12 hours; short treatment time, good effect and no pollution.

The innovation points of the technology of the invention are as follows: the treatment time of the sludge is short, the whole fermentation time is shortened to 8-12 hours, and the effect is good; the sludge with the water content of 80 percent can be manufactured into a useful organic compound fertilizer product at one time, and the national principle that sludge treatment and disposal are subject to the reduction of sludge from the source is realized; the sludge of the sewage treatment plant does not need to be sent to a landfill site for landfill, so that a large amount of land resources can be saved, and the environmental protection is facilitated; the occupied area is small, a factory can be set near a sewage treatment plant, and a large amount of transportation capacity and transportation cost can be saved; low cost and good economic benefit, and compared with other domestic sludge treatment technical projects, the method comprises the following steps:

1. compared with the traditional sludge treatment method:

at present, the treatment method of sludge with 80 percent of water content in China can be said to be a five-flower eight-door sludge treatment method, and various sludge treatment methods are available; wherein: burying, burning, mixing and burning, fertilizer preparation, solidification and the like; however, in the earlier stage of these treatment methods, the sludge with a water content of 80% must be subjected to a further dehydration treatment, and then the sludge can be buried, burned and mixed burned until the water content reaches below 60% which is regulated by the state; the landfill needs to occupy a large amount of land resources, will pollute soil and underground water source, is easy to produce new secondary pollution, and incineration, mixed combustion technology are not mature, and the incineration treatment cost is high, and at present, no successful case exists in China.

2. Compared with a sludge dewatering method; wherein: a pressure filtration dehydration method and a concentration dehydration method; the existing sludge treatment dehydration method is that sludge with the water content of 80 percent conveyed by a sewage treatment plant is conveyed into a stacking yard, a filter press is generally adopted for secondary dehydration treatment, the sludge with the water content of 80 percent has high viscosity, the dehydration can not be carried out by directly adopting the filter press, and the sludge is firstly passed through a sludge regulating water tank to carry out alkene release on the sludge to regulate the sludge concentration in the earlier stage of filter pressing, meanwhile, a plurality of chemical agents are added into the regulating water tank, and the chemical agents are used for demulsification treatment of the sludge, and then conveyed into the filter press by a water pump for filter pressing dehydration; the dewatered sludge is treated by other processes, and simultaneously, a large amount of secondary sewage is generated in the filter pressing dewatering process, and the sewage is treated and discharged after reaching the standard; a large amount of water resources are consumed in the treatment process, the water-saving treatment method does not accord with the regulation of national water-saving policies, does not accord with the environmental protection policy requirements of national regulations, and has overlong treatment time and high treatment cost.

3. Compared with the traditional sludge composting method;

the traditional sludge composting production mainly adopts a composting method to carry out fermentation process, needs repeated pile turning, has low temperature of the composting, is incomplete in killing of insect eggs and weed seeds, has long composting time of 30 to 60 days, has poor effect and occupies large space.

The fly ash is selected as a raw material of a blender for treating sludge with water content of 80 percent, and the adsorption effect and the flocculation precipitation and filtration interception effects of the fly ash are mainly utilized; the adsorption effect of the fly ash comprises physical adsorption and chemical adsorption, wherein the physical adsorption means that the adsorption is generated between the fly ash and pollutant molecules of an adsorbate through intermolecular attraction, and the effect is determined by the porosity and the specific surface area of the fly ash; the chemical adsorption means that the fly ash contains a large amount of active ingredients of aluminum, iron and silicon, and can strongly adsorb most of colloid particles with negative electricity in the water contained in the sludge to generate flocculation; in addition, the fly ash contains coagulant aids, such as nickel, cobalt, arsenic, sodium, lithium and calcium, so that the sedimentation of the fly ash can be promoted; the chemical adsorption is characterized by strong selectivity, physical adsorption and chemical adsorption exist at the same time under common conditions, but the advantages of the chemical adsorption are different under different conditions of pH value and temperature, so that the adsorption performance of the fly ash is changed; in addition, as the fly ash is a mechanical mixture of various particles and has high porosity, when the moisture in the sludge passes through the fly ash, the fly ash can filter and retain all suspended matters; the main influencing factors of the fly ash in the process of treating the high water content of the sludge include the following aspects: (1) the fly ash has small particle size fineness and large specific surface area, the finer the particle size of the fly ash is, the larger the specific surface area is, and the better the treatment effect on the water in the sludge is; (2) the chemical components of the fly ash are as follows: the content of active substances of SiO and A1O in the fly ash is high, which is beneficial to chemical adsorption; (3) pH of the solution: the pH value directly influences the treatment effect of the water in the sludge, but the influence result of the pH value is related to the property of adsorbate; (4) temperature: research shows that the lower the temperature is, the higher the removal rate of harmful substances of the fly ash to the water in the sludge is; (5) the nature of the adsorbate: the solubility, molecular polarity, molecular weight and concentration of pollutants containing high moisture in the sludge have influence on the moisture treatment effect of the sludge; the larger the molecular weight and the smaller the solubility, the better the treatment effect.

The invention selects chlorine dioxide as a disinfection, deodorization and bactericide in sludge treatment, wherein the chlorine dioxide is a product prepared by the action of sodium chlorate, sulfuric acid and methanol or the action of sodium chlorate and sulfur dioxide; chlorine dioxide is prepared by reducing chlorate serving as a raw material in a sulfuric acid medium; has the functions of sterilization, bleaching, deodorization, disinfection and fresh keeping; the action mechanism is mainly oxidation, the electronic structure of the chlorine dioxide molecule is in an unsaturated state, the outer layer has 19 electrons, the chlorine dioxide molecule has strong oxidation, and the chlorine dioxide molecule mainly attacks atomic groups rich in electrons (or supplying electrons) (such as enzyme, sulfide and chloride containing sulfydryl) and forcibly grabs the electrons to enable the electrons to become substances losing activity and changing properties, so that the aim is fulfilled;

1. the chlorine dioxide has stronger adsorption and penetration capacity on cell walls, and releases atomic oxygen to oxidize enzyme containing sulfydryl in cells to play a role in sterilization;

2. the bleaching of chlorine dioxide is to release atomic oxygen and produce hypochlorite to decompose pigment; the bleaching agent is used as a bleaching agent to replace chlorine and chlorate, so the effect is more comprehensive;

3. deodorization effect, chlorine dioxide is deodorized because it can generate dehydration reaction with odor substances (such as H2S, -SOH, -NH2) and make the odor substances quickly oxidized and converted into other substances, and simultaneously kill microorganisms without reacting with fatty acid; the chlorine dioxide has a safety effect, and can oxidize cyanide into carbon dioxide and nitrogen, namely when the concentration of the cyanide is 3.0mg/L, the dosage of the chlorine dioxide is 5.0mg/L when the 2ClO2+2CN is 2CO2+ N2+2Cl, and the removal rate of the cyanide is generally over 85 percent; the advantages that a large number of foreign experimental studies show that chlorine dioxide is a safe and nontoxic disinfectant, has no 'three-cause' effect (carcinogenesis, teratogenicity and mutagenicity), and does not generate chlorination reaction with organic matters to generate organic chloride or other toxic substances which can generate 'three-cause' effect in the disinfection process; but because chlorine dioxide has extremely strong oxidizing power, the chlorine dioxide is not used at high concentration (>500 ppm); when the concentration is less than 100ppm, the composition does not have any influence on the human body, including physiological and biochemical influences; has no sensitization to skin; therefore, chlorine dioxide is also internationally recognized as a safe, non-toxic, green sanitizer.

The invention selects polyacrylamide as a flocculating agent for treating water contained in sludge, wherein the polyacrylamide has the Chinese alias: flocculant No. 3, PAM for short; polyacrylamide is also known as a No. three coagulant; the polyacrylamide is divided into anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide and amphoteric polyacrylamide; english name: pam (acrylamide), abbreviation: PAM polyacrylamide is a water-soluble linear high molecular polymer which is formed by polymerizing Acrylamide (AM) monomers through free radical initiation, is insoluble in most organic solvents, has good flocculation property, can reduce the frictional resistance between sludge moisture, and can be divided into four types of non-ionic, anionic, cationic and amphoteric types according to the ionic characteristicsA type; the mesh number of polyacrylamide is: the mesh number refers to the granularity or thickness of the material, is the number of squares on a unit area, and is generally defined as the number of meshes in an area of 1 inch x1 inches, namely the number of meshes of the screen; for example, 600 meshes are 600 square meshes per square inch, the mesh size of polyacrylamide is generally 20-80 meshes, namely 0.85-0.2 mm, the mesh size of granular polyacrylamide is the mesh size, the mesh size of powdery polyacrylamide can be controlled to be about 100 meshes, and polyacrylamide with larger mesh size is easier to dissolve; the polyacrylamide is white powder or small granule with density of 1.32g/cm ³ (23 ℃) with a glass transition temperature of 188 ℃ and a softening temperature of approximately 210 ℃, which generally contains a small amount of water when dried, and quickly absorbs water from the environment when dried, the homopolymer isolated by freeze-drying is a white, fluffy, non-crystalline solid, but when precipitated from solution and dried is a glassy, partially transparent solid, the completely dried polyacrylamide PAM is a brittle white solid, and commercial polyacrylamide drying is generally carried out under moderate conditions; typically, the water content is five to fifteen percent, and the polymer film prepared by casting on a glass plate is a transparent, hard, brittle solid; the three-dimensional structure is mainly atactic; thermal stability: the decomposition is easy when the temperature exceeds 120 ℃; solubility: dissolving in water, not dissolving in organic solvent such as benzene, toluene, ethanol, acetone, esters, etc., and dissolving in ethylene glycol, glycerol, formamide, lactic acid, and acrylic acid by about 1%; toxicity: is nontoxic; corrosion property: no corrosion; moisture absorption: the solid is hygroscopic.

The invention selects the special strain for the sludge fermentation from agricultural transportation as the sludge treatment fermentation microbial inoculum, the product is a biological preparation developed by high-tech biotechnology in Taiwan (region), contains high-concentration nonpathogenic beneficial microorganisms, and is added with a plurality of enzymes capable of decomposing various macromolecular substances; the microorganism in the product can produce digestive enzyme in the fermentation process to decompose organic matters in the fermented sludge; the concentrated product is added in the fermentation process to supplement original strains and strengthen the decomposition of sludge organic matters so as to generate humus, so that the method is suitable for sludge fermentation; the components are composite beneficial bacteria, the property is powder, and the total number of the live bacteria is more than or equal to 1.0 multiplied by 109 cfu/g; the action mechanism is that under the aerobic condition, soluble organic matters in the fermentation materials penetrate through cell walls and cell membranes of microorganisms and are absorbed by the microorganisms; solid and colloid organic substances are firstly attached to the outside of the microorganism, the microorganism secretes extracellular enzyme to decompose the extracellular enzyme into soluble substances and then permeate into cells, the microorganism enables one part of organic substances to be oxidized into simple inorganic substances through self metabolic activity and releases energy, the other part of organic substances is used for synthesizing cell substances of the microorganism and providing energy required by various physiological activities of the microorganism, the organism can normally grow and reproduce, and the continuity of life is kept; the microorganisms in the fermentation generate a large amount of heat in the decomposition process to heat the fermentation materials; this high temperature is necessary for rapid decomposition and is beneficial for destroying weed species, insect larvae, harmful bacteria, and inhibiting the growth of certain diseases that produce harmful microorganisms that inhibit the normal growth of plants. The addition of the fermenting microbial flora can increase the decomposition speed and efficiency, because the flora is a mixture of high-concentration bacteria and fungi which are screened, domesticated, cultured and improved; the strains are selected to better survive and reproduce, simultaneously produce enzyme and decompose organic waste, thereby accelerating the decomposition of organic matters in the fermentation generation process; the standard concept for decomposing lignocellulose bacteria is to first open the fiber structure so that the sugars can be used for the metabolism of different microorganisms; microorganisms release sugars from cellulose, hemicellulose, proteins, starch and other carbohydrates into fermentation products by using cellulase, xylanase, amylase, protease, enzymes for decomposing lignin and the like; the growth of the target bacteria in the fermentation process is enhanced, so that the growth of mixed bacteria can be effectively inhibited, and odor and harmful substances are prevented from being generated; the fermentation characteristics are as follows: (1) certain heat is generated by the device, the high temperature duration is long, and no external heat source is needed, so that the harmless effect can be achieved; (2) various organic substances which are difficult to degrade are decomposed, the fermented materials are humified to a higher degree, and the available nutrients are improved; (3) the product is tasteless and odorless, has loose texture, low water content and small volume weight, so that organic matters generated in the fermentation process of the sludge provide food for microorganisms, and the microorganisms can generate nitrogen, phosphorus and potassium while the microorganisms take the food; can be used as the raw material of organic fertilizer.

The invention selects various high-quality microbial strains and enzymes to mix, domesticate, culture and revivify the microbial strains into a microbial agent which is used as a rapid leavening agent of sludge and is an activating microbial inoculum capable of rapidly fermenting and decomposing; the microbial agent is a universal composite flora agent and contains various special-function photosynthetic bacteria, azotobacter, pseudomonas fluorescens, phosphate-solubilizing potassium-solubilizing bacteria, colloidal bacillus, bacillus subtilis, lactobacillus, saccharomycetes, high-temperature-resistant actinomycetes and other microorganisms; the microbial inoculum is mixed, fermented and compounded together, is not antagonistic and can be cooperated with each other, and is a compound microbial fermentation strain; the effective viable count is more than 15 hundred million/g and can reach more than 20 hundred million/g at most; the function is strong, and the sludge organic material can be quickly heated, deodorized and dehydrated at the normal temperature of about 15 ℃ and is completely decomposed for about 7 days after being added into the sludge organic material; the fermentation agent has comprehensive functions and good effect, not only has strong decomposition effect on sludge materials, but also breeds a large number of functional bacteria and generates a plurality of specific metabolites such as hormone and antibiotic in the fermentation process, and the nutrients are changed from an ineffective state and a slow effective state into an effective state and a quick effective state; the sludge is humified and fermented to generate a large amount of humic acid, and the humic acid contains various auxin, amino acid, enzyme and antibiotic substances and functional substances capable of promoting the healthy growth of plants, so that the growth and development of crops are stimulated, the disease resistance, drought resistance and cold resistance of the crops are improved, and after the functional bacteria enter the soil, nitrogen fixation, phosphorus and potassium dissolution can be realized, the soil nutrients are increased, the soil structure is improved, and the fertilizer efficiency utilization rate is improved; make the sludge quickly decay

The sludge derivative is cooked and peculiar smell is eliminated, the sludge derivative after fermentation treatment is used as raw materials of organic fertilizer, soil remediation improver, medium soil and biological organic fertilizer, has comprehensive nutrients and contains various biological active substances, and the quality of agricultural products can be obviously improved, so that the aim of increasing production and efficiency is fulfilled, and the additional value of the sludge derivative product is improved.

Because the elements containing nitrogen, phosphorus and organic matters in the sludge are easy to form partial decomposition in the digestion treatment process to generate unstable factors, the invention adopts ammonium nitrate, monoammonium phosphate and potassium sulfate as supplements, so that the stable content and the quality of the nutrient components of nitrogen, phosphorus, potassium and trace elements in the sludge organic compound fertilizer are ensured, the supply of the three elements of nitrogen, phosphorus and potassium is sufficient, and the requirement of plant growth can be met; the method ensures that more substances such as sugar, starch, cellulose, fat and the like are formed in plants, not only has high yield, but also has good product quality. After the nutrient elements are applied to soil, the nutrient elements are decomposed by microorganisms to generate humus, so that the formation of a soil granular structure can be promoted, the water and fertilizer retention capability of the soil can be enhanced, the soil can be improved and fertilized, and the nutrient elements are suitable for the growth of various crops.

The invention uses the quicklime powder to disinfect and sterilize in the sludge treatment process, uses the ferrous sulfate as a reducing agent, uses the magnesium sulfate as a ferrous iron retention agent, can fully decompose the sludge, and achieves the purpose of rapid deodorization, disinfection and sterilization.

The invention relates to a method for manufacturing a sludge organic compound fertilizer, which comprises the following steps of mixing and uniformly stirring sludge with the water content of 80%, fly ash powder, agricultural waste powder, quicklime powder, ferrous sulfate, magnesium sulfate, polyacrylamide and chlorine dioxide in a double-shaft humidifying stirrer according to a proportion, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8; conveying the sludge to a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ through oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding a sludge special fermentation strain and a thermophilic high-temperature active bacteria composite flora agent in proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, so that harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge are effectively killed; the water vapor generated in the fermentation process is adsorbed by an activated carbon absorption box, and the specific surface area and the adsorption function of the activated carbon are utilized to adsorb and purify trace waste gas in the water vapor, so that the odorless colorless up-to-standard emission is achieved; the fermented sludge clinker is aged, crushed and screened to prepare powder with the particle size of less than 0.18mm, and then the powder is mixed and stirred with ammonium nitrate, monoammonium phosphate and potassium sulfate by adopting a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation, and the comprehensive compound circulation is carried out in a wide staggered mode without dead angles, and the purpose of uniformly diffusing and mixing the fertilizer is achieved; then the uniformly mixed powder is conveyed to a special storage silo, and is packaged by a full-automatic electronic metering and weighing packaging machine system to prepare an organic compound fertilizer powder product or the powder is prepared into 3-5 mm particles by a granulator and is dried and packaged to prepare an organic compound fertilizer particle product; thereby solving the problem of treatment and disposal of the sludge with the water content of 80 percent, creating a new way for the treatment and disposal of the sludge, and creating a good favorable condition for the resource comprehensive utilization of the sludge; realizes the resource recycling of the sludge so as to reduce the pollution to the natural environment.

The sludge organic compound fertilizer product produced according to the technology of the invention is tested by related quality testing departments specified by China, and all technical indexes of the product meet the requirements of the national standards GB4284-2018 agricultural sludge pollutant control standard and NY525-2002 organic fertilizer standard.

The detection results of the product quality inspection center of the testing center and the Shenzhen agricultural institute analyzed by the Guangdong province ecological environment and soil institute are as follows:

detecting the sludge organic compound fertilizer: according to the national standards GB4284-2018 agricultural sludge pollutant control Standard and NY525-2002 organic Fertilizer Standard:

the product name is as follows: sludge organic compound fertilizer

And (3) detection results:

a) the total nitrogen content is: 3.33 percent; b) The total phosphorus content is: 2.58 percent;

c) the total potassium content is: 0.63%; d) The organic content is 42.6%;

e) moisture content: 15.6 percent; f) pH6.8;

g) the Cu (copper) content is: 626 mg/kg;

h) the Zn (zinc) content is as follows: 1001 mg/kg;

i) the effective viable count (cfu) is: 0.35 hundred million/g;

j) the faecal coliform population is: 86/g (mL);

k) the death rate of the roundworm eggs is as follows: 98 percent.

Due to the adoption of the technical scheme, the technology has the following advantages and effects:

a) the treatment time for sludge with 80% of water content is short, and the effect is good; the sludge with the water content of 80 percent can be manufactured into an organic compound fertilizer product at one time, so that the national principle that sludge treatment and disposal are subject to the reduction of sludge from the source is realized;

b) the sludge of the sewage treatment plant does not need to be sent to a landfill site for landfill, so that a large amount of land resources can be saved, and the environmental protection is facilitated;

c) a large amount of transport capacity and transport cost can be saved, and the economic benefit is good;

d) the sludge organic compound fertilizer product takes sludge, fly ash and agricultural wastes as main raw materials, and is fermented by a sealed high-temperature fermentation machine and a special fermentation strain for the sludge and a thermophilic active bacteria compound microbial inoculum, so that the sludge organic compound fertilizer product is a compound product consisting of multiple elements;

e) creates a new way for the treatment and disposal of the sludge and lays a good favorable foundation for the comprehensive utilization of the sludge resource.

f) The problem of secondary environmental pollution caused by sludge to urban environmental sanitation is solved, and the environment is protected; meets the relevant regulations of the State Federal for modification 2011 No. 461 on further strengthening sludge treatment and recycling comprehensive utilization;

g) the production process is simple, the three wastes are not discharged, the requirements of national circular economy and energy conservation, emission reduction and environmental protection are met, the investment is low, the effect is fast, the cost is low, the benefit is good, and the environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-saving environment-friendly energy-friendly.

Detailed Description

The present invention will be described in further detail below in order to enable those skilled in the art to better understand the technical solution of the present invention.

Example 1

Sludge, which is generated in daily life of urban residents, institutions and schools and is a precipitate generated in the treatment process of domestic sewage collected and discharged by a municipal pipe network and mixed sewage generated in the rainy period and scum residues floating on the surface of the sewage, is treated by a sewage treatment plant and then is discharged, wherein the water content of the sludge is 80%;

fly ash is a volcanic ash-like mixed material formed by high-temperature combustion of coal powder; coal is ground into coal powder with the particle size of less than 100 microns by a thermal power plant, preheated air is sprayed into a hearth to be combusted in a suspension state, high-temperature flue gas mixed with a large amount of non-combustible substances is generated, and the coal powder is collected by a dust collecting device to obtain fly ash; magnetic separation, drying and screening are carried out to prepare powder with the particle size of less than 0.045 mm;

the agricultural wastes are waste plants generated in the planting and harvesting processes of agricultural production and are respectively: crop wastes such as corn straws, sorghum straws, wheat straws, rice straws, soybean straws, cassava straws, peanut shells and sweet potato vines are prepared into powder with the particle size of less than 5mm after sorting, crushing, drying, grinding and screening;

calcining limestone at high temperature, crushing, sorting, crushing, grinding and screening to prepare powder with the particle size of less than 0.045 mm;

taking 65kg of the prepared sludge with the water content of 80%, 35kg of fly ash powder, 28kg of agricultural waste powder, 6kg of quick lime powder, 15kg of ferrous sulfate, 16kg of magnesium sulfate, 6kg of polyacrylamide and 6kg of chlorine dioxide, and uniformly mixing and stirring by adopting a double-shaft humidifying stirrer, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8; conveying the sludge to a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ through oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding 0.01kg of sludge special fermentation strain and 0.02kg of thermophilic high-temperature active bacteria composite microbial inoculum according to the proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, simultaneously activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite microbial flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, so that harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge are effectively killed; the fermented sludge clinker is aged, crushed and screened to prepare mixed powder with the particle size of less than 0.18mm, 5kg of ammonium nitrate, 4kg of monoammonium phosphate and 5kg of potassium sulfate are mixed and stirred by a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation, and the comprehensive compound circulation is carried out in a staggered mode without dead angles, so that the aim of uniformly diffusing and mixing the fertilizer is fulfilled; then conveying the uniformly mixed powder to a special storage silo, packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare an organic compound fertilizer powder product or preparing the powder into 3-5 mm particles by a granulator, drying and packaging to prepare an organic compound fertilizer particle product; the nitrogen content is detected as follows: 3.28 percent; the phosphorus content is: 2.63 percent; the potassium content is: 0.66 percent; the organic matter is: 47.8 percent; water content: 13.5 percent; pH: 6.3; the effective viable count (cfu) is: 0.38 hundred million/g; the faecal coliform population is: 83 per g (mL); the death rate of the roundworm eggs is as follows: 97 percent; both reach the national standards GB4284-2018 agricultural sludge pollutant control Standard and NY525-2002 organic Fertilizer Standard; the product is qualified.

Example 2

75kg of sludge with the water content of 80%, 25kg of fly ash powder, 38kg of agricultural waste powder, 8kg of quick lime powder, 20kg of ferrous sulfate, 9kg of polyacrylamide and 9kg of chlorine dioxide which are prepared in the embodiment 1 are mixed and stirred uniformly by a double-shaft humidifying stirrer, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8; conveying the sludge into a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ by using oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding 0.05kg of sludge special fermentation strain and 0.06kg of thermophilic high-temperature active bacteria composite microbial inoculum according to a proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, simultaneously activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite microbial flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, so that harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge are effectively killed; the fermented sludge clinker is aged, crushed and screened to prepare mixed powder with the particle size of less than 0.18mm, 8kg of ammonium nitrate, 8kg of monoammonium phosphate and 8kg of potassium sulfate are taken and mixed by a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate all-directional compound circulation, and the materials are widely staggered without dead angles, thereby achieving the purpose of uniformly diffusing and mixing the fertilizer; then conveying the uniformly mixed powder to a special storage silo, and packaging the powder by using a full-automatic electronic metering and weighing packaging machine system to prepare an organic compound fertilizer powder product or preparing the powder into 3-5 mm particles by a granulator, drying and packaging the particles to prepare the organic compound fertilizer product; the nitrogen content is detected as follows: 3.31 percent; the phosphorus content is: 2.62 percent; the potassium content is: 0.63%; the organic matter contained is: 45.8 percent; water content: 15.5 percent; pH: 6.5; the effective viable count (cfu) is: 0.38 hundred million/g; the faecal coliform population is: 83 per g (mL); the death rate of the roundworm eggs is as follows: 98 percent; both reach the national standards GB4284-2018 agricultural sludge pollutant control Standard and NY525-2002 organic Fertilizer Standard; the product is qualified.

Example 3

68kg of sludge with the water content of 80%, 32kg of fly ash powder, 30kg of agricultural waste powder, 7kg of quick lime powder, 18kg of ferrous sulfate, 22kg of magnesium sulfate, 7kg of polyacrylamide and 7kg of chlorine dioxide, which are prepared in the embodiment 1, are mixed and stirred uniformly by a double-shaft humidifying stirrer, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8; conveying the sludge to a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ through oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding 0.03kg of sludge special fermentation strain and 0.04kg of thermophilic high-temperature active bacteria composite microbial inoculum according to the proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, simultaneously activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite microbial flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, so that harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge are effectively killed; the fermented sludge clinker is aged, crushed and screened to prepare mixed powder with the particle size of less than 0.18mm, 6kg of ammonium nitrate, 6kg of monoammonium phosphate and 6kg of potassium sulfate are taken and mixed by a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate all-directional compound circulation, and the materials are widely staggered without dead angles, thereby achieving the purpose of uniformly diffusing and mixing the fertilizer; then conveying the uniformly mixed powder to a special storage silo, packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare an organic compound fertilizer powder product or preparing the powder into 3-5 mm particles by a granulator, drying and packaging to prepare an organic compound fertilizer particle product; the nitrogen content is detected as follows: 3.28 percent; the phosphorus content is: 2.65 percent; the potassium content is: 0.68 percent; the organic matter contained is: 46.8 percent; water content: 13.8 percent; pH: 6.5; the effective viable count (cfu) is: 0.36 hundred million/g; the faecal coliform population is: 85/g (mL); the death rate of the roundworm eggs is as follows: 98 percent; both reach the national standards GB4284-2018 agricultural sludge pollutant control Standard and NY525-2002 organic Fertilizer Standard; the product is qualified.

Example 4

66kg of sludge with the water content of 80%, 34kg of fly ash powder, 34kg of agricultural waste powder, 8kg of quick lime powder, 19kg of ferrous sulfate, 24kg of magnesium sulfate, 8kg of polyacrylamide and 8kg of chlorine dioxide, which are prepared in the embodiment 1, are mixed and stirred uniformly by a double-shaft humidifying stirrer, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8; conveying the sludge to a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ through oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding 0.04kg of sludge special fermentation strain and 0.05kg of thermophilic high-temperature active bacteria composite microbial inoculum according to the proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, simultaneously activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite microbial flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, so that harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge are effectively killed; the fermented sludge clinker is aged, crushed and screened to prepare mixed powder with the particle size of less than 0.18mm, and then 7kg of ammonium nitrate, 8kg of monoammonium phosphate and 7kg of potassium sulfate are mixed and stirred by a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation, and the comprehensive compound circulation is carried out in a staggered way without dead angles, thereby achieving the purpose of uniformly diffusing and mixing the fertilizer; then conveying the uniformly mixed powder to a special storage silo, and packaging the powder by using a full-automatic electronic metering and weighing packaging machine system to prepare an organic compound fertilizer powder product or preparing the powder into 3-5 mm particles by a granulator, drying the particles and packaging the particles to prepare an organic compound fertilizer particle product; the nitrogen content is detected as follows: 3.38 percent; the phosphorus content is: 2.66 percent; the potassium content is: 0.65 percent; the organic matter contained is: 47.5 percent; water content: 13.9 percent; pH: 6.6; the effective viable count (cfu) is: 0.38 hundred million/g; the faecal coliform population is: 83 per g (mL); the death rate of the roundworm eggs is as follows: 97 percent; both reach the national standards GB4284-2018 agricultural sludge pollutant control Standard and NY525-2002 organic Fertilizer Standard; the product is qualified.

Example 5

70kg of sludge with the water content of 80 percent prepared in the example 1, 30kg of fly ash powder, 36kg of agricultural waste powder, 8kg of quick lime powder, 19kg of ferrous sulfate, 26kg of magnesium sulfate, 6kg of polyacrylamide and 6kg of chlorine dioxide are taken, and a double-shaft humidifying stirrer is adopted for mixing and stirring uniformly, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8; conveying the sludge into a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ by using oil and electric conduction heat, keeping the temperature for 2 hours, then powering off, keeping the temperature between 60-80 ℃, simultaneously adding 0.02kg of sludge special fermentation strain and 0.03kg of thermophilic high-temperature active bacteria composite microbial inoculum according to a proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, simultaneously activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite microbial flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, so that harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge are effectively killed; the fermented sludge clinker is aged, crushed and screened to prepare mixed powder with the particle size of less than 0.18mm, 8kg of ammonium nitrate, 5kg of monoammonium phosphate and 8kg of potassium sulfate are mixed and stirred by a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation, and the comprehensive compound circulation is carried out in a staggered mode without dead angles, and the purpose of uniformly diffusing and mixing the fertilizer is achieved; then conveying the uniformly mixed powder to a special storage silo, packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare an organic compound fertilizer powder product or preparing the powder into 3-5 mm particles by a granulator, drying and packaging to prepare an organic compound fertilizer particle product; the nitrogen content is detected as follows: 3.38 percent; the phosphorus content is: 2.53 percent; the potassium content is: 0.68 percent; the organic matter contained is: 46.8 percent; water content: 13.5 percent; pH: 6.6; the effective viable count (cfu) is: 0.38 hundred million/g; the faecal coliform population is: 83 per g (mL); the death rate of the roundworm eggs is as follows: 97 percent; both reach the national standards GB4284-2018 agricultural sludge pollutant control Standard and NY525-2002 organic Fertilizer Standard; the product is qualified.

Claims (7)

1. The method for producing the organic compound fertilizer by using the eighty percent sludge with the water content is characterized by comprising the following raw materials in parts by weight:

the sludge with the water content of 80 percent is sediments generated in the treatment process of domestic sewage generated by municipal pipe network centralized collection and discharge in daily life of urban residents, institutions, schools and units and mixed sewage generated in raining and scum residues floating on the surface of the sewage, and is the sludge with the water content of 80 percent discharged after being treated by a sewage treatment plant;

the fly ash powder is a volcanic ash-like mixed material formed by high-temperature combustion of coal powder; coal is ground into coal powder with the particle size of less than 100 microns by a thermal power plant, preheated air is sprayed into a hearth to be combusted in a suspension state, high-temperature flue gas mixed with a large amount of non-combustible substances is generated, and the coal powder is collected by a dust collecting device to obtain fly ash; magnetic separation, drying and screening are carried out to prepare powder with the particle size of less than 0.045 mm;

the agricultural waste powder is waste plants generated in the agricultural production, planting and harvesting processes and comprises the following components: crop wastes such as corn straws, sorghum straws, wheat straws, rice straws, soybean straws, cassava straws, peanut shells and sweet potato vines are prepared into powder with the particle size of less than 5mm after sorting, crushing, drying, grinding and screening;

the quick lime powder is prepared by calcining limestone at high temperature, crushing, sorting, crushing, grinding and screening to obtain powder with the particle size of less than 0.045 mm.

2. A manufacturing method for producing organic compound fertilizer by eighty sludge with percentage of water content is characterized in that the sludge with 80 percent of water content, fly ash powder, agricultural waste powder, quicklime powder, ferrous sulfate, magnesium sulfate, polyacrylamide and chlorine dioxide are mixed and stirred uniformly according to the proportion, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8;

conveying the sludge to a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ through oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding a sludge special fermentation strain and a thermophilic high-temperature active bacteria composite flora agent in proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, and the sludge is used for killing harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge;

the water vapor generated in the fermentation process is adsorbed by an activated carbon absorption box, and the specific surface area and the adsorption function of the activated carbon are utilized to adsorb and purify trace waste gas in the water vapor, so that the odorless colorless up-to-standard emission is achieved;

the fermented sludge clinker is aged, crushed and screened to prepare powder with the particle size of less than 0.18mm, and then the powder is mixed and stirred with ammonium nitrate, monoammonium phosphate and potassium sulfate to ensure that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation and are widely staggered without dead angles, thereby achieving the purpose of uniformly diffusing and mixing the fertilizer;

and then conveying the uniformly mixed powder to a special storage silo, and packaging the powder by using a full-automatic electronic metering weighing packaging machine system to prepare an organic compound fertilizer powder product or preparing the powder into 3-5 mm particles by using a granulator, drying the particles and packaging the particles to prepare an organic compound fertilizer particle product.

3. The method for producing organic compound fertilizer by using eighty percent sludge with percentage of water content as claimed in claim 2, wherein the sludge fermentation adopts a mechanical full-automatic high-temperature sealed fermentation device, an oil-separating layer is arranged in the fermentation device, and the fermentation method is a rapid high-temperature fermentation method by utilizing oil to conduct heat and heat electrically.

4. The method for producing organic compound fertilizer by using eighty percent of sludge with percentage of water content as claimed in claim 2, wherein the fermentation strains comprise sludge special fermentation strains and thermophilic high-temperature active bacteria compound microbial agents which are mixed in proportion.

5. The method for producing an organic compound fertilizer by using eighty percent of water content sludge according to claim 2, characterized in that the mixing and stirring are uniformly mixed and stirred by a double-shaft humidifying mixing stirrer.

6. The method for producing organic compound fertilizer by using eighty percent of water content sludge according to claim 2, wherein the waste gas treatment comprises an activated carbon absorption box and an air pressurizing fan.

7. The method for producing an organic compound fertilizer by using eighty percent sludge with water content according to claim 2, which is characterized by comprising the following steps:

taking 65-75 parts by weight of sludge with water content of 80%, 25-35 parts by weight of fly ash powder, 28-38 parts by weight of agricultural waste powder, 6-8 parts by weight of quick lime powder, 15-20 parts by weight of ferrous sulfate, 16-28 parts by weight of magnesium sulfate, 6-9 parts by weight of polyacrylamide and 6-9 parts by weight of chlorine dioxide, and uniformly mixing and stirring by adopting a double-shaft humidifying stirrer, wherein: the water content of the mixture is controlled to be 45% -65%, the material is held by hands to be agglomerated without water drops, the material is loosened by hands, the carbon-nitrogen ratio is 25-30: 1, the pH value is 6-8;

conveying the sludge to a sealed high-temperature fermentation machine by using a belt conveyer, starting a heating system, raising the temperature in the fermentation machine to 80-100 ℃ through oil and electric conduction heat, keeping the temperature for 2 hours, then cutting off the power, keeping the temperature between 60-80 ℃, simultaneously adding 0.01-0.05 weight part of sludge special fermentation strain and 0.02-0.06 weight part of thermophilic high-temperature active bacteria composite flora agent according to the proportion for fermentation, adjusting a stirring system matched with the fermentation machine to an intermittent stirring function, simultaneously activating the activity of thermophilic composite microbial flora, and accelerating the rapid degradation of organic matters in the sludge and the formation of humus by using the activity function of the thermophilic composite flora; the fermentation time of the whole sludge in the fermentation machine is 8-12 hours, and the sludge is used for killing harmful microorganisms, worm eggs, weed seeds and pathogenic bacteria in the sludge;

the water vapor generated in the fermentation process is adsorbed by an activated carbon absorption box, and the specific surface area and the adsorption function of the activated carbon are utilized to adsorb and purify trace waste gas in the water vapor, so that the odorless colorless up-to-standard emission is achieved;

aging, crushing and screening the fermented sludge clinker to prepare powder with the particle size of less than 0.18mm, taking 5-8 parts by weight of ammonium nitrate, 4-8 parts by weight of monoammonium phosphate and 5-8 parts by weight of potassium sulfate, and mixing and stirring by adopting a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation, and the comprehensive compound circulation is carried out in a widely staggered manner without dead corners, thereby achieving the purpose of uniformly diffusing and mixing the fertilizer;

and then conveying the uniformly mixed powder to a special storage silo, and packaging the powder by using a full-automatic electronic metering weighing packaging machine system to prepare an organic compound fertilizer powder product or preparing the powder into 3-5 mm particles by using a granulator, drying the particles and packaging the particles to prepare an organic compound fertilizer particle product.