CN101863692A - Method for preparing bioorganic fertilizer by using city life sludge - Google Patents
Method for preparing bioorganic fertilizer by using city life sludge Download PDFInfo
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention discloses a method for preparing a bioorganic fertilizer by using city life sludge, comprising the following steps: (1) mixing an anaerobic zymophyte agent with sludge to obtain a material 1; (2) mixing the material 1 with organic raw material powder to carry out anaerobic fermentation; (3) adding fermented auxiliary materials to the product obtained by anaerobic fermentation, and regulating the water content to be 45-50wt% to obtain a material 2; (4) inoculating a high-temperature zymophyte agent to the material 2 to carry out high-temperature aerobic fermentation; and (5) crushing, granulating and drying to obtain the bioorganic fertilizer. The invention has the advantages that by using the method of the invention, the odor and peculiar smell of the sludge can be completely removed; the fermentation period is short; nutrients can be rapidly matured and pernicious microbes and parasite eggs can be thoroughly killed (a coliform value is reduced to below 30 MPN/100gDM, and ascaris eggs are inactivated in hundred-percent); and the prepared bioorganic fertilizer product contains no more than 20% of water, no less than 40% of organic matters and no less than 4% of nitrogen phosphorus potassium, and the contents of heavy metals and other indexes all satisfy standard requirements.
Description
Technical field
The present invention relates to a kind of preparation method of organic fertilizer, relate in particular to a kind of method of utilizing municipal sludge to prepare biological organic fertilizer, belong to the biological organic fertilizer field.
Background technology
Mud is the byproduct that city domestic sewage is handled, and in recent years, along with the continuous expansion of city size, the generation of dewatered sludge is also increasing, and how to handle has become a global problem.After sewage is handled through various different process, after water outlet has reached national specified discharge standard, the mud that produces in the sewage treatment process still contains a large amount of organic substances and abundant nutritive substances such as nitrogen phosphorus, be discharged in the water body arbitrarily as not adding stabilizing treatment, organism in the mud and nitrogen, sulphur is with the oxygen in the mass consumption water body, cause water quality to worsen, have a strong impact on the existence of aquatic organism, nutritive substance in the mud can cause the eutrophication of water body, impel the pernicious breeding of algae, cause the red tide and the green damp phenomenon of water body, urban water resource water quality is worsened, influence domestic water and industrial or agricultural water, fishery production will be descended, cause the tremendous economic loss; If mud is directly used on the agricultural, heavy metal meeting contaminated soil and crop in the mud; Also contain the factor of harm humans health such as pathogenic bacterium, parasitic ovum in the mud, deal with improperly, can cause transmission of disease.This has just caused serious secondary pollution to environment.Therefore mud must be handled before the ultimate disposal carrying out, and reaches the purpose of minimizing, stabilization, innoxious, resource utilization.
The sludge composting technology is a new biologic treating technique that develops rapidly from the later stage sixties 20th century in the world, it uses multidisciplinary technology to utilize micropopulation to drop in the particular environment heterogeneous organism decomposition, improving sludge is become stable soil ulmin, be used for fertilizing the soil or soil improvement.Composting is to utilize microorganisms such as the extensive bacterium that exists of nature, actinomycetes, fungi, promote that controlledly biodegradable organism is to the microbiological process of stable class soil ulmin biochemical conversion in solid the giving up, under certain temperature, humidity and pH value condition, make organism generation biochemical degradation, form a kind of material of similar humus soil.Because composting technology can reach the effect of " innoxious ", " minimizing ", " resource utilization " in actual applications, and have economic, practical, do not need external energy, do not produce characteristics such as secondary pollution, therefore, after the seventies in 20th century, cause the extensive attention of countries in the world, and become a research focus in the environmental protection field rapidly.Sludge composting is compared with other treatment processs (as landfill, burning), has advantages such as construction investment is few, working cost is low, non-secondary pollution.But the conventional compost fermentation of mud is handled and is also existed many weak points, and for example: the fermentation reactor system process often is spontaneous fermentation, and the anaerobically fermenting treatment process easily produces foul odour, causes environmental problem; It is slower that the aerobic fermentation temperature raises, and fermentation period is long, often need be with one month time, and excessive one of them difficult problem that becomes of compost area influences material cycling and transformation efficiency.
Fertilizer will develop towards commercial direction.Because traditional organic fertilizer accumulation mode falls behind.Has " three low three is big " phenomenon.Be that nutrient content is low, volume is big; Work rate is low, and labour intensity is big; Innoxious degree is low, and pathogen transmission pollutes big, and the organic fertilizer amount of application is descended.But the conduct of applying organic manure material is improved the soil, an important process content of culture fertility and agricultural sustainable development, and therefore, the organic fertilizer commercialization just becomes inexorable trend.The present compound organic and inorganic fertilizer of promoting, the commercialization for organic fertilizer provides successful experience.By biotechnology domestic sludge is converted into the fertilizer that can utilize once more, the bigger effect of performance in agriculture production will brought into play bigger effect aspect soil structure improved addictive, the raising quality of agricultural product.
Summary of the invention
Technical problem to be solved by this invention is to overcome the conventional compost of existing mud to dispose existing deficiency, provide a kind of new municipal sludge that utilizes to prepare the method for biological organic fertilizer, this method can remove the stink and the peculiar smell of mud fully, fermentation period is short, but the quick composting nutrient transforms and kill harmful microorganism and parasitic ovum, and the every standard of preparation-obtained biological organic fertilizer all meets the requirement of country to biological organic fertilizer.
Technical problem to be solved by this invention is achieved through the following technical solutions:
A kind of method of utilizing municipal sludge to prepare biological organic fertilizer may further comprise the steps:
1, anaerobically fermenting microbial inoculum and mud are mixed, obtain material 1;
2, with material 1 and bibulous organic raw material powder according to 1: after the volume ratio of 1-4.5 mixes, carry out anaerobically fermenting to tunning and do not have stink;
3, add the fermentation auxiliary material account for its cumulative volume 10-50% in the product after anaerobically fermenting is finished, the moisture content of mixture is adjusted to 35-50wt%, obtain material 2;
4, inoculation thermophilic fermentation microbial inoculum in material 2 carries out high-temperature aerobic fermentation;
5, the material fragmentation after high-temperature aerobic fermentation is finished, granulation, oven dry, promptly.
Anaerobically fermenting microbial inoculum described in the step 1 can be various anaerobically fermenting microbial inoculum or fermented liquids commonly used; Preferably, described anaerobically fermenting bacterium is the mix bacterium agent that agent of lactic acid bacteria and yeast microbial inoculum are formed; Preferred, described agent of lactic acid bacteria is Lactobacterium acidophilum (Lactobacillus acidophilus); Described yeast microbial inoculum is yeast saccharomyces cerevisiae (Saccharomyces cerevisiae); Above-mentioned these bacterial classifications all can be bought from commercial channels and obtain, and for example can directly buy from China Committee for Culture Collection of Microorganisms common micro-organisms center (CGMCC) to obtain.
Anaerobically fermenting microbial inoculum of the present invention can prepare with reference to following method: (1) preparation substratum: 1000 weight parts waters dissolve in following ingredients: brown sugar 1 weight part, glucose 3 weight parts, protein powder 0.1 weight part, ammonium citrate 0.1 weight part, sal epsom 0.054 weight part, dipotassium hydrogen phosphate 0.2 weight part, sodium-chlor 0.6 weight part, standby after 116 ℃ of sterilizations; (2) after being mixed according to 1: 0.5 volume ratio, lactobacterium acidophilus's (CGMCC 1.1854) seed liquor and S. cervisiae (CGMCC2.610) seed liquor obtain the anaerobically fermenting seed liquor; The anaerobically fermenting seed liquor is inoculated in the prepared culture medium 37 ℃ cultivated 48 hours, pH reduces to 3.5 o'clock results, obtains the anaerobically fermenting microbial inoculum; Gained anaerobically fermenting microbial inoculum is a brown liquid, flavor acid, viable bacteria content 1,500,000,000/mL.
Wherein, described lactobacterium acidophilus (CGMCC 1.1854) seed liquor prepares in accordance with the following methods: (1) preparation substratum: 1000 weight parts waters, dissolve in following composition: glucose 5 weight parts, protein powder 0.2 weight part, ammonium citrate 0.2 weight part, sal epsom 0.054 weight part, extractum carnis 1 weight part, dipotassium hydrogen phosphate 0.2 weight part, sodium-acetate 0.5 weight part, manganous sulfate 0.025 weight, standby after 116 ℃ of sterilizations; (2) insert lactobacillus solution 5 weight parts, cultivated 48 hours for 37 ℃, pH reduces to and stopped in 3.6 o'clock cultivating.The gained streptococcus acidi lactici fermented solution is a brown liquid, flavor acid, viable bacteria content 1,000,000,000/mL;
Described S. cervisiae (CGMCC2.610) seed liquor prepares in accordance with the following methods: (1) preparation substratum: 1000 weight parts waters add following ingredients: potato fragment (0.5 * 0.5cm) 200 weight part, glucose 20 weight parts, 121 ℃ of sterilizations; (2) insert 5 parts of yeast seed liquid, 37 ℃ of aerated culture 40 hours, viable bacteria content 500,000,000/mL.
Mud described in the step 1 is preferably the municipal sludge that water content is 70-90wt%, and more preferably water content is the municipal sludge of 75-80wt%;
In order to reach better ferment effect, in the step 1 with anaerobically fermenting microbial inoculum and mud according to 1-5: 1000 volume ratio is mixed;
Bibulous organic raw material powder vegetable material described in the step 2 comprises the crop material crushed material;
Anaerobically fermenting condition optimization described in the step 2 is: leavening temperature is more than 20 ℃, fermentation time 24-48 hour;
Fermentation auxiliary material described in the step 3 is preferably bone meal, bean cake powder or their mixture;
In the step 4 with material 2 and thermophilic fermentation microbial inoculum according to 1 ton: the ratio of 300g-1500g is inoculated; Wherein, described thermophilic fermentation microbial inoculum is preferably genus bacillus, more preferably subtilis (Bacillus subtilis); Subtilis can be bought from commercial channels and obtain, and for example can directly buy from AS to obtain;
This subtilis can obtain with reference to following preparation method: adopt general liquid submerged fermentation method, seed culture medium nutrition bouillon media, fermentative production substratum are that bean powder, starch are the collective media of main raw material.Substratum is invested in industrial production fermentor tank (more than 10 cubes), the fermentation volume is that 65%, 121 ℃ of tank body volume was sterilized 1.5 hours, when being cooled to 37 ± 1 ℃, cultured genus bacillus seed in the seeding tank is inoculated in the fermentor tank, and inoculum size is 5% of a fermentation volume.Aerobic fermentation 35 hours, ventilating ratio are 1: 1.2.It is 90% o'clock that thalline becomes the gemma rate, stop fermentation, add and help filter Ji filter press, filter cake fluidized drying mode drying, gained bacterium sorodium spore content is 800-1000CFU/ gram, with the bacterium powder with carrier (for example: the food grade talc powder) be made into the aerobic fermentation that product that 5,000,000,000 CFU/ restrain is used for mud.
The condition of the high-temperature aerobic fermentation described in the step 4 is: the fermentation materials height is 60-100 centimetre; Fermentation materials temperature in 2-3 days rises to more than 60 ℃, keeps more than 60 ℃ hot conditions 3-4 days, and material stopped 7-10 days altogether in the fermenter;
The resulting biological organic fertilizer product moisture of preparation method of the present invention≤20%, organic 〉=40%, nitrogen phosphorus potassium 〉=4%, the equal conformance with standard of all the other indexs (NY525-2002) requirement.After testing, the coliform value in the biological organic fertilizer product is reduced to below the 30MPN/100gDM, roundworm egg 100% deactivation.Total cadmium (in Cd, mg/kg)≤3g; Total mercury is (in Hg, mg/kg)≤5; Plumbous (in Pb, mg/kg)≤100; Chromium is (in Cr, mg/kg)≤300; Arsenic is (in Se, mg/kg)≤30.
The present invention can also be even with resulting biological organic fertilizer and nutritive element and additive thorough mixing, carries out drying, granulation, obtains serial fertilizer special for organic.
The inventive method is at first carried out the moisture adjusting with mud with bibulous organic raw material powder (vegetable material powder) and is inoculated the anaerobically fermenting microbial inoculum simultaneously and remove stink peculiar smell and fermentation, the raw material that anaerobically fermenting is handled carries out nutrient adjusting and moisture adjusting and inoculation thermophilic fermentation bacterial classification afterwards, and (more than 60-70 ℃) effectively reduces material moisture under hot conditions.Wherein, anaerobic fermentation process can be removed the stink and the peculiar smell of mud, also has the adjusting water function in addition, has avoided the secondary pollution of sewage and smell; In the high-temperature aerobic fermentation stage, the quick heat production of aerobic bacteria makes the compost fermentation treatment time by reducing to 7-10 days more than 1 month, has improved processing efficiency greatly; In addition, the heat that thermophilic fermentation produces is taken away large quantity of moisture, and material moisture is reduced to lower level, has both saved a large amount of energy, has avoided new contamination of heavy again.The biological organic fertilizer that the inventive method is produced meets the every set quota of organic fertilizer of national regulation fully, can realize low cost and safely cleaning production.
The fertilizer that the present invention produces is applied in the agriculture production, and every mu of consumption is 500-1500kg.
Embodiment
Further describe the present invention below in conjunction with specific embodiment, advantage of the present invention and characteristics will be more clear along with description.But these embodiment only are exemplary, scope of the present invention are not constituted any restriction.It will be understood by those skilled in the art that and down can make amendment or replace without departing from the spirit and scope of the present invention, but these modifications and replacing all fall within the scope of protection of the present invention the details of technical solution of the present invention and form.
The preparation of embodiment 1 anaerobism microbial inoculum
The anaerobism microbial inoculum that uses in the inventive method is Lactobacillus acidophilus (Lactobacillus acidophilus) (goods number: CGMCC 1.1854), S. cervisiae (Saccharomyces cerevisiae) (goods number: the CGMCC2.610) fermented liquid that makes of mixed culture.The color of this fermented liq is a brown, and the total viable count of date manufactured is 1,500,000,000/mL, and has sweet tart flavour road.
1, with the agent of lactobacterium acidophilus's fermentative preparation anaerobic bacterial fermentation
Present embodiment is selected Lactobacillus acidophilus (Lactobacillus acidophilus) (CGMCC 1.1854) fermentation for use, can in 48 hours the pH value be dropped to about 3.6.
The preparation method: 1000 weight parts waters dissolve in following ingredients: brown sugar 1 weight part, glucose 3 weight parts, protein powder 0.1 weight part, ammonium citrate 0.1 weight part, sal epsom 0.054 weight part, dipotassium hydrogen phosphate 0.2 weight part, sodium-chlor 0.6 weight part, standby after 116 ℃ of sterilizations.Culture material after the sterilization is inserted Lactobacillus acidophilus (Lactobacillus acidophilus) (CGMCC 1.1854) seed liquor 5 weight parts, cultivated 48 hours for 37 ℃, pH reduces to 3.6 o'clock results.Gained Lactobacillus acidophilus fermented liquid is a brown liquid, flavor acid, viable bacteria content 1,000,000,000/mL.
2, Lactobacillus acidophilus and S. cervisiae are by the agent of 1: 0.5 volume ratio combined inoculation fermentative preparation anaerobically fermenting.
1000 weight parts waters dissolve in following ingredients: brown sugar 1 weight part, and glucose 3 weight parts, protein powder 0.1 weight part, ammonium citrate 0.1 weight part, sal epsom 0.054 weight part, dipotassium hydrogen phosphate 0.2 weight part, sodium-chlor 0.6 weight part, standby after 116 ℃ of sterilizations; (2) with Lactobacillus acidophilus's seed liquor, yeast seed liquid obtains the anaerobically fermenting seed liquor after mixing according to 1: 0.5 volume ratio; The anaerobically fermenting seed liquor is inoculated in the prepared culture medium 37 ℃ cultivated 28 hours, pH reduces to 3.5 o'clock results, obtains the anaerobically fermenting microbial inoculum; Gained anaerobically fermenting microbial inoculum is a brown liquid, flavor acid, viable bacteria content 1,500,000,000/mL.
3, Lactobacillus acidophilus's seed liquor preparation: commodity bacterial classification (CGMCC 1.1854) is made MRS medium slant bacterial classification by purchasing the explanation activation.It is standby that the inclined-plane is stored in refrigerator (4 ℃).1000 weight parts waters dissolve in following composition: glucose 5 weight parts, protein powder 0.2 weight part, ammonium citrate 0.2 weight part, sal epsom 0.054 weight part, extractum carnis 1 weight part, dipotassium hydrogen phosphate 0.2 weight part, sodium-acetate 0.5 weight part, manganous sulfate 0.025 weight, standby after 116 ℃ of sterilizations.From having cultivated picking 3-5 transfering loop bacterium colony on the stand-by inclined-plane, aseptic inoculation is in the substratum of sterilization, and 37 ℃ leave standstill cultivation 48 hours.
4, S. cervisiae (CGMCC2.610) seed liquor prepares in accordance with the following methods: (1) preparation substratum: 1000 weight parts waters add following ingredients: potato fragment (0.5 * 0.5cm) 200 weight part, glucose 20 weight parts, 121 ℃ of sterilizations; (2) insert 5 parts of yeast seed liquid, 37 ℃ of aerated culture 40 hours, viable bacteria content 500,000,000/mL.
The preparation of embodiment 2 aerobic microbial inoculums
Aerobic microbial inoculum is a subtilis (Bacillus subtilis) (goods number: AS 1.936), adopt general liquid submerged fermentation method, seed culture medium nutrition bouillon media, fermentative production substratum are that bean powder, starch are the collective media of main raw material.Substratum is invested in 30 cubes of fermentor tanks, the fermentation volume is 65%, 121 ℃ of autoclaving 1.5 hours of tank body volume, when being cooled to 37 ± 1 ℃, cultured subtilis seed in the seeding tank is inoculated in the fermentor tank, and inoculum size is 5% of a fermentation volume.Aerobic fermentation 35 hours, ventilating ratio are 1: 1.2.It is 90% o'clock that thalline becomes the gemma rate, stop fermentation, add and help filter Ji filter press, filter cake fluidized drying mode drying, gained bacterium sorodium spore content is 800-1000CFU/ gram, and the bacterium powder is made into the aerobic fermentation that product that 5,000,000,000 CFU/ restrain is used for mud with specific carrier (food grade talc powder).
Embodiment 3
Water ratio is about 80% mud and is transported into the anaerobically fermenting workshop, every cube of mud evenly sprays the prepared anaerobism microbial inoculum of 1.5 liters of embodiment 1, obtain mixture 1, then with mixture 1,1: 2.0 volume ratio uniform mixing of crop material powder, pile up anaerobically fermenting, temperature condition bottom fermentation 24 hours more than 20 ℃, mud mixture does not have stink substantially.
The mud mixture that anaerobically fermenting is finished adds the fermentation auxiliary material (bone meal, bean cake powder etc.) that accounts for mud mixture cumulative volume 20% again, and moisture content is adjusted to 50%, obtains mixture 2; The prepared aerobic type microbial inoculum of mixture per ton 2 inoculations 600 gram embodiment 2, mix the back and enter the trough type fermentation storehouse by the helical feed hopper, height of materials is 80-100 centimetre.Compost material temperature in 4 days rises to 60 ℃, with once ventilate continuous high temperature fermentation of automatic tripper turning in per 2 days.Material stopped 10-15 days altogether in fermenter, finished compost, transferred out fermenter.
After testing, every index of the prepared biological organic fertilizer of present embodiment is as follows:
Moisture≤18%, organic 〉=55%, nitrogen 15%, phosphorus 7%, potassium 9.2%; The coliform value is reduced to below the 30MPN/100gDM, roundworm egg 100% deactivation.Total cadmium (in Cd, mg/kg)≤3g; Total mercury is (in Hg, mg/kg)≤5; Plumbous (in Pb, mg/kg)≤100; Chromium is (in Cr, mg/kg)≤300; Arsenic is (in Se, mg/kg)≤30.
Embodiment 4
Water ratio is about 85% mud and is transported into the anaerobically fermenting workshop, every cube of mud evenly sprays the prepared anaerobism microbial inoculum of 3 liters of embodiment 1, obtain mixture 1, then with mixture 1 and wheat stalk powder ratio uniform mixing according to 1: 3 (v/v), pile up anaerobically fermenting, temperature condition bottom fermentation 30 hours more than 20 ℃, mud mixture does not have stink substantially.
The mud mixture that anaerobically fermenting is finished adds the 20% fermentation auxiliary material (bone meal, bean cake powder etc.) that accounts for the mud mixture cumulative volume again, and moisture content is adjusted to 45%, obtains mixture 2; The prepared aerobic type microbial inoculum of mixture per ton 2 inoculations 300 gram embodiment 2, mix the back and enter the trough type fermentation storehouse by the helical feed hopper, height of materials is 80-100 centimetre.Compost material temperature in 4 days rises to 65 ℃, with once ventilate continuous high temperature fermentation of automatic tripper turning in per 2 days.Material stopped 10-15 days altogether in fermenter, finished compost, transferred out fermenter.
After testing, every index of the prepared biological organic fertilizer of present embodiment is as follows:
Moisture≤20%, organic 〉=52%, nitrogen 11.7%, phosphorus 8%, potassium 8.0%; The coliform value is reduced to below the 30MPN/100gDM, roundworm egg 100% deactivation.
Total cadmium (in Cd, mg/kg)≤3g; Total mercury is (in Hg, mg/kg)≤5; Plumbous (in Pb, mg/kg)≤100; Chromium is (in Cr, mg/kg)≤300; Arsenic is (in Se, mg/kg)≤30.
Embodiment 5
With water ratio is that 75% mud is transported into the anaerobically fermenting workshop, every cube of mud evenly sprays the prepared anaerobism microbial inoculum of 1.0 liters of embodiment 1, obtain mixture 1, then with mixture 1, mixture that powdered rice hulls and wheat stalk powder are formed and calcium magnesium phosphorus powder are according to the ratio uniform mixing of 1: 1.5 (v/v), pile up anaerobically fermenting, temperature condition bottom fermentation 24 hours more than 20 ℃, mud mixture does not have stink substantially.
The mud mixture that anaerobically fermenting is finished adds the 20% fermentation auxiliary material (bone meal, bean cake powder etc.) that accounts for the mud mixture cumulative volume again, and moisture content is adjusted to 40%, obtains mixture 2; The prepared aerobic type microbial inoculum of the embodiment 2 of mixture per ton 2 inoculations 500 grams, mix the back and enter the trough type fermentation storehouse by the helical feed hopper, height of materials is 80-100 centimetre.Compost material temperature in 3 days rises to 70 ℃, with once ventilate continuous high temperature fermentation of automatic tripper turning in per 2 days.Material stopped 7-10 days altogether in fermenter, finished compost, transferred out fermenter.
After testing, every index of the prepared biological organic fertilizer of present embodiment is as follows:
Moisture≤17%, organic 〉=53%, nitrogen 18.7%, phosphorus 9.1%, potassium 9.9%; The coliform value is reduced to below the 30MPN/100gDM, roundworm egg 100% deactivation.
Total cadmium (in Cd, mg/kg)≤3g; Total mercury is (in Hg, mg/kg)≤5; Plumbous (in Pb, mg/kg)≤100; Chromium is (in Cr, mg/kg)≤300; Arsenic is (in Se, mg/kg)≤30.
Embodiment 6
With water ratio is that 80% mud is transported into the anaerobically fermenting workshop, every cube of mud evenly sprays the prepared anaerobism microbial inoculum of 5 liters of embodiment 1, obtain mixture 1, then with mixture 1, corn stalk powder ratio uniform mixing in 1: 2.8 (v/v), pile up anaerobically fermenting, temperature condition bottom fermentation 22 hours more than 20 ℃, mud mixture does not have stink substantially.
The mud mixture that anaerobically fermenting is finished adds the 20% fermentation auxiliary material (bone meal, bean cake powder etc.) that accounts for the mud mixture cumulative volume again, and moisture content is adjusted to 40%, obtains mixture 2; The aerobic type microbial inoculum that the embodiment 2 of mixture per ton 2 inoculations 500 grams is prepared mixes the back and enters the trough type fermentation storehouse by the helical feed hopper, and height of materials is 80-100 centimetre.Compost material temperature in 3 days rises to 70 ℃, with once ventilate continuous high temperature fermentation of automatic tripper turning in per 2 days.Material stopped 7-10 days altogether in fermenter, finished compost, transferred out fermenter.
After testing, every index of the prepared biological organic fertilizer of present embodiment is as follows:
Moisture≤16%, organic 〉=56%, nitrogen 16.5%, phosphorus 9.0%, potassium 8.5%; The coliform value is reduced to below the 30MPN/100gDM, roundworm egg 100% deactivation.
Total cadmium (in Cd, mg/kg)≤3g; Total mercury is (in Hg, mg/kg)≤5; Plumbous (in Pb, mg/kg)≤100; Chromium is (in Cr, mg/kg)≤300; Arsenic is (in Se, mg/kg)≤30.
Test example 1
The biological organic fertilizer that test sample: embodiment 1 is prepared;
Test method and result: carried out plastic tent cucumber and eggplant in municipalization village, Shouguang, Shandong and test in 2007, the result shows: every mu with 1000 kilograms of test samples, 1200 kilograms of 30 kilograms of additional potassium sulphates and 15-15-15 composite fertilizers, 18800 kilograms of per mu yields, than control group volume increase 15%, every mu increases income 3600 yuan, and economic benefit increases by 20%.
Test example 2
The biological organic fertilizer that test sample: embodiment 2 is prepared;
Test method and result: every mu is added 800 kilograms of test samples, and test-results shows on the garlic of Jinxiang, Shandong: garlic production promoting 16%, and garlic stems volume increase 13%, every mu increases income 240 yuan, and total benefit increases income 14%.
Test example 3
The biological organic fertilizer that test sample: embodiment 3 is prepared;
Test method and result: in Changqing District stock breeding base, Jinan City and Yongfeng, Jinan City kind industry company limited, every mu is added 300 kilograms of test samples on corn, wheat, and effect of increasing production is obvious, increases production 6.5% and 5.5% respectively.
Claims (10)
1. method of utilizing municipal sludge to prepare biological organic fertilizer may further comprise the steps:
(1) anaerobically fermenting microbial inoculum and mud are mixed, obtain material 1;
(2) with material 1 and organic raw material powder according to 1: after the volume ratio of 1-4.5 mixes, carry out anaerobically fermenting to tunning and do not have stink;
(3) add the fermentation auxiliary material account for its cumulative volume 10-50% in the product after anaerobically fermenting is finished, the moisture content of mixture is adjusted to 35-50wt%, obtain material 2;
(4) inoculation thermophilic fermentation microbial inoculum in material 2 carries out high-temperature aerobic fermentation;
(5) the material fragmentation after high-temperature aerobic fermentation is finished, granulation, oven dry, promptly.
2. it is characterized in that in accordance with the method for claim 1: the mix bacterium agent that the anaerobically fermenting microbial inoculum described in the step (1) is made up of agent of lactic acid bacteria and yeast microbial inoculum.
3. in accordance with the method for claim 2, it is characterized in that: described anaerobically fermenting microbial inoculum prepares in accordance with the following methods: (1) preparation substratum: 1000 weight parts waters dissolve in following ingredients: brown sugar 1 weight part, glucose 3 weight parts, protein powder 0.1 weight part, ammonium citrate 0.1 weight part, sal epsom 0.054 weight part, dipotassium hydrogen phosphate 0.2 weight part, sodium-chlor 0.6 weight part, the sterilization back is standby; (2) with Lactobacterium acidophilum (Lactobacillus acidophilus) seed liquor, yeast saccharomyces cerevisiae (Saccharomyces cerevisiae) seed liquor obtains the anaerobically fermenting seed liquor after mixing according to 1: 0.5 volume ratio; The anaerobically fermenting seed liquor is inoculated in the substratum that step (1) prepared 37 ℃ cultivated 28 hours, pH reduces to 3.5 o'clock results, obtains the anaerobically fermenting microbial inoculum.
4. in accordance with the method for claim 1, it is characterized in that: the mud described in the step (1) is that water content is the municipal sludge of 70-90wt%, is preferably the municipal sludge that water content is 75-80wt%.
5. it is characterized in that in accordance with the method for claim 1: in the step (1) with anaerobically fermenting microbial inoculum and mud according to 1-5: 1000 volume ratio is mixed.
6. it is characterized in that in accordance with the method for claim 1: the organic raw material powder described in the step (2) is selected from the vegetable material crushed material.
7. in accordance with the method for claim 1, it is characterized in that: the anaerobically fermenting condition described in the step (2) is: leavening temperature is more than 20 ℃, fermentation time 24-48 hour.
8. it is characterized in that in accordance with the method for claim 1: the fermentation auxiliary material described in the step (3) is selected from bone meal, bean cake powder or their mixture.
9. it is characterized in that in accordance with the method for claim 1: in the step (4) with material 2 and thermophilic fermentation microbial inoculum according to 1 ton: the ratio of 300g-1500g is inoculated; Wherein, described thermophilic fermentation microbial inoculum is subtilis (Bacillus subtilis) microbial inoculum.
10. it is characterized in that in accordance with the method for claim 1: the condition of the high-temperature aerobic fermentation described in the step (4) is: the fermentation materials height is 60-100 centimetre; Fermentation materials temperature in 2-3 days rises to more than 60 ℃, keeps more than 60 ℃ hot conditions 3-4 days, and material stopped 7-10 days altogether in fermenter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101376444A CN101863692B (en) | 2009-04-29 | 2009-04-29 | Method for preparing bioorganic fertilizer by using city life sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101973794A (en) * | 2010-10-29 | 2011-02-16 | 中国农业大学 | Composting method |
| CN102060583A (en) * | 2010-11-18 | 2011-05-18 | 北京城市排水集团有限责任公司 | Method for preparing biological carbon soil by static aerobic composting of sludge |
| CN102093098A (en) * | 2011-01-13 | 2011-06-15 | 中山市祥源环保工程有限公司 | Method for preparing fertilizer by using domestic sludge |
| CN102303988A (en) * | 2011-08-19 | 2012-01-04 | 重庆大学 | Method for preparing garden and park nutrient soil by adopting dewatered sludge through fermentation |
| CN102643118A (en) * | 2012-04-26 | 2012-08-22 | 杨军 | Method and device for harmless and recycled disposal of domestic garbage |
| CN103864494A (en) * | 2014-03-24 | 2014-06-18 | 南开大学 | Method for producing high-performance organic compound fertilizer from straws and sludge |
| CN104446683A (en) * | 2014-11-28 | 2015-03-25 | 新疆天物科技发展有限公司 | Comprehensive treatment technology for municipal domestic sludge |
| CN104649748A (en) * | 2015-02-11 | 2015-05-27 | 江苏金麦穗新能源科技股份有限公司 | Method for preparing organic fertilizer of rice and wheat straws |
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| CN105085104A (en) * | 2015-08-03 | 2015-11-25 | 山东沃科奇实业有限公司 | Method for preparing high-quality biological organic fertilizer through municipal sewage sludge |
| CN105967771A (en) * | 2016-04-29 | 2016-09-28 | 金中钟 | Sludge decomposition pretreatment method |
| CN106278417A (en) * | 2015-06-11 | 2017-01-04 | 重庆爱家乡控股集团有限公司 | A kind of method utilizing municipal sludge to produce biological organic fertilizer |
| CN106278416A (en) * | 2015-06-11 | 2017-01-04 | 重庆爱家乡控股集团有限公司 | A kind of preparation method of anti-continuous cropping bio-organic fertilizer special |
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| CN106699300A (en) * | 2016-12-16 | 2017-05-24 | 广东省农业科学院农业资源与环境研究所 | Novel technology for aerobic-anaerobic-aerobic biological treatment of night soil and straw |
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| CN112723941A (en) * | 2020-12-31 | 2021-04-30 | 广西壮族自治区环境保护科学研究院 | Nitrogen and phosphorus preservation composting method for municipal domestic sludge |
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| CN101973794A (en) * | 2010-10-29 | 2011-02-16 | 中国农业大学 | Composting method |
| CN101973794B (en) * | 2010-10-29 | 2012-10-24 | 中国农业大学 | Composting method |
| CN102060583A (en) * | 2010-11-18 | 2011-05-18 | 北京城市排水集团有限责任公司 | Method for preparing biological carbon soil by static aerobic composting of sludge |
| CN102060583B (en) * | 2010-11-18 | 2013-02-13 | 北京城市排水集团有限责任公司 | Method for preparing biological carbon soil by static aerobic composting of sludge |
| CN102093098A (en) * | 2011-01-13 | 2011-06-15 | 中山市祥源环保工程有限公司 | Method for preparing fertilizer by using domestic sludge |
| CN102303988A (en) * | 2011-08-19 | 2012-01-04 | 重庆大学 | Method for preparing garden and park nutrient soil by adopting dewatered sludge through fermentation |
| CN102303988B (en) * | 2011-08-19 | 2012-12-26 | 重庆大学 | Method for preparing garden and park nutrient soil by adopting dewatered sludge through fermentation |
| CN102643118A (en) * | 2012-04-26 | 2012-08-22 | 杨军 | Method and device for harmless and recycled disposal of domestic garbage |
| CN103864494A (en) * | 2014-03-24 | 2014-06-18 | 南开大学 | Method for producing high-performance organic compound fertilizer from straws and sludge |
| CN104973744A (en) * | 2014-04-14 | 2015-10-14 | 大冶市三禾生物环保肥料有限公司 | Bio-organic fertilizer preparation through extraction of biogas with slurry and then fermentation |
| CN104446683A (en) * | 2014-11-28 | 2015-03-25 | 新疆天物科技发展有限公司 | Comprehensive treatment technology for municipal domestic sludge |
| CN104649748A (en) * | 2015-02-11 | 2015-05-27 | 江苏金麦穗新能源科技股份有限公司 | Method for preparing organic fertilizer of rice and wheat straws |
| CN104782460A (en) * | 2015-04-09 | 2015-07-22 | 广西大学 | Culture medium for anthurium |
| CN106278417A (en) * | 2015-06-11 | 2017-01-04 | 重庆爱家乡控股集团有限公司 | A kind of method utilizing municipal sludge to produce biological organic fertilizer |
| CN106278416A (en) * | 2015-06-11 | 2017-01-04 | 重庆爱家乡控股集团有限公司 | A kind of preparation method of anti-continuous cropping bio-organic fertilizer special |
| CN105085104A (en) * | 2015-08-03 | 2015-11-25 | 山东沃科奇实业有限公司 | Method for preparing high-quality biological organic fertilizer through municipal sewage sludge |
| CN105967771A (en) * | 2016-04-29 | 2016-09-28 | 金中钟 | Sludge decomposition pretreatment method |
| CN106631546A (en) * | 2016-09-08 | 2017-05-10 | 西北农林科技大学 | Bio-organic fertilizer and preparation method thereof |
| CN106699300A (en) * | 2016-12-16 | 2017-05-24 | 广东省农业科学院农业资源与环境研究所 | Novel technology for aerobic-anaerobic-aerobic biological treatment of night soil and straw |
| CN106699300B (en) * | 2016-12-16 | 2021-03-02 | 广东省农业科学院农业资源与环境研究所 | Novel process for treating human excrement and straw by aerobic-anaerobic-aerobic organisms |
| CN107739223A (en) * | 2017-10-09 | 2018-02-27 | 三江县稻香山茶油生态发展有限公司 | A kind of production method of oil tea special complex fertilizer |
| CN109197524A (en) * | 2018-09-26 | 2019-01-15 | 葛洲坝中固科技股份有限公司 | A kind of gardens cultivated soil and the preparation method and application thereof of high alkalinity river and lake silt preparation |
| CN109503276A (en) * | 2018-12-19 | 2019-03-22 | 安徽尊贵现代农业科技有限公司 | A kind of preparation method of the biological organic fertilizer with insect prevention function |
| CN109761465A (en) * | 2019-01-10 | 2019-05-17 | 昆明理工大学 | A kind of method of excess sludge anaerobic fermentation producing and ethanol |
| CN109704838A (en) * | 2019-02-22 | 2019-05-03 | 厦门水务生物科技股份有限公司 | A kind of municipal sludge trough type fermentation technique |
| CN110452844A (en) * | 2019-08-15 | 2019-11-15 | 陈玉亭 | A kind of preparation method of the complex micro organism fungicide for waste harmless treatment |
| CN112723941A (en) * | 2020-12-31 | 2021-04-30 | 广西壮族自治区环境保护科学研究院 | Nitrogen and phosphorus preservation composting method for municipal domestic sludge |
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