CN101838090B - Method for treating sludge of urban sewage treatment plants in controllable composting mode - Google Patents
Method for treating sludge of urban sewage treatment plants in controllable composting mode Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 56
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- 239000003337 fertilizer Substances 0.000 claims abstract description 130
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Classifications
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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
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- Fertilizers (AREA)
Abstract
The invention relates to a method for treating sludge of urban sewage treatment plants, in particular to the method for treating the sludge of the urban sewage treatment plants in a controllable composting mode. The method is characterized by comprising the following steps of: a, preparing organic fertilizer auxiliary materials; b, placing the sludge into a conventional stirring machine at the normal temperature, mixing the sludge and the organic fertilizer auxiliary materials to obtain a mixture, and fully stirring the mixture to form high-temperature compost; c, placing the high-temperature compost in ventilated and rain sheltering environment for high-temperature composting, regulating and controlling the internal temperature of the high-temperature compost by using an air blower during the process of the high-temperature composting, controlling the internal temperature to quickly rise and keeping the temperature about 75 DEG C to perform rapid fermentation on organic matters, and keeping for 15 to 20 days to form organic fertilizer primary products; and d, screening the decomposed and dehydrated organic fertilizer primary products, stabilizing the organic fertilizer at the normal temperature for 10 to 15 days to form organic fertilizer finished products, and finally bagging the organic fertilizer finished products to obtain the fertilizer products.
Description
Technical field
The present invention relates to the method for a kind of Treating Municipal Sewage treatment plant mud, especially a kind of method with controlled composting mode Treating Municipal Sewage treatment plant mud.
Background technology
Along with progress of science and technology and people raising to environmental requirement; People's sewage that produces of living needs just be discharged into after treatment physical environment; Existing WWT is to carry out activated sludge process and biomembrance process with settlement of sewage or filtration through sewage work's (station); Remove wherein impurity and mud, the water that will reach environmental protection requirement then is discharged into physical environment.Be the water quality requirement that makes sewage reach a certain water body of draining or reuse, and to its process that purifies.In this sewage treatment process, sewage work's (station) can produce a large amount of mud with handling sewage quantity.Promptly in the processing of sewage, adopt that various separation methods remove dissolved, suspension or the colloidal solid matter, the sediment that therefrom produces is called mud.Sewage work is through the engineering sludge treatment technique: belt thickening all-in-one, water cut 99.6% mud per ton is carried out rough handling so that transhipment, the sludge moisture content after the processing also 80% per ton about.Along with improving constantly of treatment rate of domestic sewage, the output of mud is equally in continuous increase.According to the related data statistics, the total amount of the annual mud generation of China at present reaches 9,000,000 tons, and the standardization disposal rate of sludge of sewage treatment plant is less than 20%, and the method for handling mainly is a landfill.Even have some peasant households directly to move mud to field to do fertilizer, arbitrarily a large amount of applying sludges cause serious environmental and hygienic risk easily.The sludge treatment handling problems has become the bottleneck problem that restriction entire sewage treatment industry develops in a healthy way.
At present; The processing of China's municipal sludge, the method for disposal are: 1, the mud of sewage work's generation is accomplished in plant area and is simply stablized processed; Mud is transported to the sludge treatment terminal then; Wherein a part is sent to the field as the mud of fertilizer, most of refuse landfill landfill that transported to.Is mud through handling like this harmless? The answer is in the negative.According to present treatment process, still there is pollution hidden trouble in mud.Because through the mud after the simple process, steady state is easy to broken, rainfall just can make mud resile.And the urban wastewater treatment firm operation condition is gradually improved, and the sludge quantity that is produced day by day increases, and has occupied the landfill space of city refuse landfill in a large number, the percolate severe contamination that is produced environment, caused huge burden to city refuse landfill.Refuse landfill has not had the ability of admitting the mud that sewage work produced, must manage in addition to handle and dispose.The problem that landfill method also exists is, because refuse landfill is open-air mostly, just the safety in place is constituted serious harm through the mud that resiles behind several the rain.Rainwater makes the mud of air storage become muddy watery soup, and the sewage of brown is mixing mud and running wild in the place.The sight such in the whole nation is also stale.Not only mud runs wild, and mud is also very serious to the corrosion penetration phenomenon of refuse landfill safeguards, and the life-span of many refuse landfills is shortened greatly.And hazardous and noxious substances possibly permeate the ground, polluted underground water and peripheral ecotope.The mud landfill also receives the restriction of land used, and the handling charges of mud is also very high.2, existing mud uses (soil utilization) as fertilizer, though it contains the part organic matter, the heavy metal that wherein contains, pathogenic bacteria and other long-acting organic pollutants all can produce harm to soil, and the quality of crop is had a strong impact on; The mud that produces in the sewage treatment process, organic content is higher and difficult stable, is prone to corruption, and contains and post worm's ovum, handles badly will cause secondary pollution, so must deal carefully with.Caused the soil salt damage, burnt problems such as seedling and disease and pest at some local arbitrarily applying sludge fertilizer.3, as the mud that burns, corresponding consumption mass energy, and complex equipments, energy consumption is big, and investment is high, can produce toxic and harmfuls such as Dioxins.From technical difficulty relatively, the technical difficulty of landfill is minimum, secondly is the soil utilization, and what difficulty was the highest is to burn.From cost of investment, the input cost of burning is the highest, secondly is landfill, and the soil utilizes cost minimum.Come comparison from environmental exposure, there are the risk of tail gas and groundwater pollution respectively in burning and landfill, and the risk of soil utilization also needs control.
Like No. 02117359.1 disclosed a kind of city sludge biofertilizer of Chinese invention patent ZL; It is formulated by components such as enzymatic microorganism 2-2.3%, shale powder 4.2-4.5%, rice bran 24-28%, brown sugar 4.2-4.5%, municipal sludge 38-42%, nitrogen, phosphorus, potassic fertilizer 23-27%, and its preparation technology is: under the good oxygen condition of lucifuge, after the former enzymatic microorganism enlarged culturing; Be added in rice bran, brown sugar, the shale powder; Be added to after the stirring in the municipal sludge, after fully stirring again, the piling fermentation; In the fermenting process every day collapse of setting 1 time, add superphosphate of lime during collapse of setting; After 5-7 days, it is thick that product is, and has a large amount of white hyphas to roll into a ball and occur, and the oxidation pond peculiar smell is eliminated, and reaches abundant attenuation degree, adds nitrogenous fertilizer and potash fertilizer, stirs and processes particle, packs warehouse-in; This fertilizer ability activation mikrobe, chessom increases soil fertility, can decompose and eliminate toxin such as chemical fertilizer, pesticide residue heavy metal in the soil, reaches nuisanceless, pollution-free, can make increasing crop yield.The disclosed a kind of methods of utilizing municipal sludge, ight soil to produce highly efficient granular organic fertilizer of No. 94105972.3, Chinese invention patent application and for example, this invention belongs to agricultural fertilizer ME.Be to utilize the urban domestic wastewater to handle the mud, the ight soil that produce to be main raw material; Through slaking, dehydration, pulverizing, batching, granulation, oven dry, screening, technology of the package; It is required to produce the growth of various farm crop, fruit tree; Include efficient organic and nitrogen, phosphorus, potassium and various trace element, have the granular organic fertilizer of quick-acting, slowly-releasing, long-acting.This fertilizer can improve farmland organic content and crop yield and quality significantly.Its working method is simple, easy to implement.
But; Above-mentioned existing sludge composting treatment process all is extensive, and promptly the mud process of becoming thoroughly decomposed through high temperature relies on the temperature that the flora natural decomposition produces in the mud fully, and temperature randomness is bigger; Existing compost method all need carry out turning (collapse of setting) step; Regulate heap body internal temperature with this, the stack turner that is adopted consumes mass energy and inefficiency, and is not easy to let high temperature nuclear reactor fertilizer constant temperature.Can not control time and quality that mud changes into organic fertilizer accordingly, sludge handling process can't be effectively controlled, and then can't handle mud in a large number.Above disadvantage is the existing insoluble for a long time technical barrier of sludge composting treatment process.
Therefore; All there is major defect in existing sludge treatment method, is badly in need of a kind of method with controlled composting mode Treating Municipal Sewage treatment plant mud that can increase substantially the sludge treatment rate, consume energy and less, do not produce secondary pollution and effectively reduce the sludge treatment cost.
Summary of the invention
The purpose of this invention is to provide a kind of method with controlled composting mode Treating Municipal Sewage treatment plant mud that can increase substantially the sludge treatment rate, consume energy and less, do not produce secondary pollution and effectively reduce the sludge treatment cost.
Method with controlled composting mode Treating Municipal Sewage treatment plant mud of the present invention is characterized in that carrying out according to following steps:
A, organic waste is ground into the particle about a centimetre to two centimetres, is made into the fertilizer auxiliary material;
B, at normal temperatures the mud of water cut 75% to 80% organic content height per ton and heavy metal free is packed in the existing stirrer; Ratio and fertilizer auxiliary material according to 1 ton of fertilizer auxiliary material of 1 ton of mud proportioning mix, and fully stir then and form high temperature nuclear reactor fertilizer;
C, high temperature nuclear reactor fertilizer is put into ventilation, carried out During High-Temperature Composting under the environment of taking shelter from rain; In the During High-Temperature Composting process, regulate and control high temperature nuclear reactor fertilizer internal temperature through gas blower; Controlling its internal temperature is rapidly heated and maintains 75 deg.c and carry out the organism quick fermentation; Kept 15 to 20 days, and let mud become thoroughly decomposed, dewater per ton, form the organic fertilizer first product to water cut 15% to 20%;
D, the organic fertilizer first product that will become thoroughly decomposed, dewater screen; Filter out the Powdered fertilizer auxiliary material that do not become thoroughly decomposed then; Remaining Powdered fertilizer is put into shady and cool ventilation exsiccant environment, stablized at normal temperatures 10 to 15 days, form the fertilizer finished product; With the pack of fertilizer finished product, form fertilizer product at last.
In step a of the present invention; Said organic waste is meant waste from farm and sideline product processing (bacterium slag) such as wood chip, the dregs of a decoction, fowl and animal excrement, crop material, edible mushrooms; Domestic refuse and garden garbage (fallen leaves, mow, prune branch), one of them or wherein several kinds combination such as flyash.Can certainly let the formation of organic waste be with the bacterium slag or/and stalk is main.Be that organic waste can all be made up of bacterium slag or stalk; Also can constitute by bacterium slag and stalk; Certainly can also constitute by bacterium slag, stalk, fowl and animal excrement, fallen leaves and flyash; But no matter be to be main with bacterium slag and stalk, or bacterium slag or stalk are the main organic waste that constitutes, its staple all must be occupied more than 80% of machine waste total amount.Then; The particle that organic waste is ground into about one centimetre to two centimetres is made into the fertilizer auxiliary material; Purpose is the fertilizer auxiliary material at next step with after mud mixes; Can let be formed with the environment that is beneficial to bacteria fermentation and becomes thoroughly decomposed (can allowing air flow and bacterium breed fast) in the mud, reach the efficient height, become thoroughly decomposed thoroughly, quick heating and the short purpose of fermentation period.Pulverize organic waste and can adopt existing commercially available kibbler, as: kibbler that Shanghai Shibang Machinery Co., Ltd. produces or the like.
In step b of the present invention; According to " municipal sewage plant's sewage sludge emission standard " of the issue in 1993 of the regulation of 4.2.3 among the agriculture standard NY/T 798-2004 and the Ministry of Construction (CJ3025-93); Select water cut 75% to the 80% organic content height per ton of sewage work and the mud of heavy metal free for use; Then mud is packed in the existing stirrer, mix, and can add the high temperature bacterium of becoming thoroughly decomposed simultaneously according to the ratio and the fertilizer auxiliary material of 1 ton of fertilizer auxiliary material of 1 ton of mud proportioning; Ratio is 1 kilogram of high temperature of 10 tons of mud proportionings bacterium of becoming thoroughly decomposed, and fully stirs then and forms high temperature nuclear reactor fertilizer; The become thoroughly decomposed process of bacterium and stirring of mixing sludge and fertilizer auxiliary material, inoculation high temperature by a certain percentage; Can in existing stirrer, handle; The stirrer that said stirring is used is existing commercially available stirrer, the horizontal mixer of producing like the inferior plastic machine of Dongguan City ring factory or post-type mixer or the like.
The high temperature that can also add simultaneously when forming high temperature nuclear reactor fertilizer among the step b of the present invention bacterium of becoming thoroughly decomposed can be existing multiple high temperature decomposing microbial inoculum (an efficient decomposer); Bacteria prepn for organic matter to become decomposed fast like white silk bacterium or the production of sea, Beijing Z-TEK Bioisystech Co., Ltd; Its bacterium decomposition efficiency of becoming thoroughly decomposed is high; Advantage is strong, the compound system of the decomposer of effect stability.Above-mentioned microbial inoculum belongs to little aerobic microbiological, and power consumption is few, and fermentation costs is low, and the cellulose substances that decomposes for difficulty has extremely strong Decomposition, and the leading advantage that possesses skills has become one of at present best fermenting agent (" bacteria prepn for organic matter to become decomposed fast "; The patent No.: 00121101), can kill pathogenic bacteria and harmful assorted bacterium during the fermentation.
In step c of the present invention with high temperature nuclear reactor fertilizer put into ventilation, During High-Temperature Composting under the environment of taking shelter from rain; In the During High-Temperature Composting process, regulate and control high temperature nuclear reactor fertilizer internal temperature through gas blower; Controlling its internal temperature is rapidly heated and maintains 75 (70 to 80) deg.c and carry out the organism quick fermentation; Kept 15 to 20 days, and let mud become thoroughly decomposed, dewater per ton, form the organic fertilizer first product to water cut 15% to 20%.This process can be carried out in existing bar shaped fermenter.Concrete mode and purpose through gas blower regulation and control high temperature nuclear reactor fertilizer internal temperature are: let gas blower force to high temperature nuclear reactor fertilizer inner ventilation; The high temperature nuclear reactor fertilizer at initial stage (mixture of mud and auxiliary material) internal temperature is low; The flora of this moment does not also begin corruption and produces temperature, and the airduct of gas blower is inserted the bottom blowing hot-air of high temperature nuclear reactor fertilizer, lets high temperature nuclear reactor fertilizer inside to 50 to 60 deg.c that are rapidly heated; Create flora corruption environment, can effectively quicken the material digest process.After high temperature nuclear reactor fertilizer internal temperature was warming up to 50 to 60 deg.c, flora began corruption generation high temperature in the high temperature nuclear reactor fertilizer, and the intensification air feed of the machine that just can turn off the blast lets high temperature nuclear reactor fertilizer degenerate naturally.When high temperature nuclear reactor fertilizer internal temperature surpasses 80 degrees centigrade, force logical cool breeze cooling with gas blower again, keep high temperature nuclear reactor fertilizer internal temperature between 70 to 80 degrees centigrade.In this process, need not adopt turning step necessary in the existing During High-Temperature Composting, (existing all need turning) corresponding stack turner of having avoided consumes mass energy and inefficiency, is not easy to let high temperature nuclear reactor fertilizer homothermic disadvantage.Its objective is to let the mud quick and controlled fermentation maturity in fermenter that has mixed fertilizer auxiliary material (few part transforms into fertilizer), change into biological organic fertilizer.Gas blower can make the heap temperature of high temperature nuclear reactor fertilizer in 48 hours, rise to more than 65 ℃; And maintain 75 deg.c and kept 15 to 20 days; Therefore can kill the toxic compounds of to vaporize such as harmful virus, pathogenic bacteria, worm's ovum and elimination organophosphorus pesticide, and become thoroughly decomposed into high-quality organic fertilizer bullion.The gas blower that adopts in this step is existing commercially available roots blower, as: the roots blower that the sharp moral environmental protection equipment in Nantong Manufacturing Co., Ltd produces, or the roots blower of Zhangqiu, Jinan City great achievement machinery ltd production or the like.The fermenter that adopts in this step is commercially available fermenter, fermenter of producing like the Beijing Yanbei Huamu Science & Technology Co., Ltd or the like.
After step c organic fertilizer bullion of the present invention is accomplished, can also in the organic fertilizer bullion, form special-purpose fertilizer, can solve the soil compaction problem, improve the physicochemical property of soil according to client's needs adding nitrogen, phosphorus, potassium.Use the unit weight that can obviously reduce soil after the compost, increase voidage, improve water retention capacity, sandy soil is formed granule, strengthen ventilative property, reduce soil erosion, promote the growth of root system of plant to increase.To the crop nutrient uptake feature, improve output, improve quality, increase soil nutrient.Compost has some unique character that are superior to general chemical fertilizer, and it contains N, P, K and various trace elements, the complete and lasting fertilizer effect of nutriment in a fertilizer, and stabilized organism can play a role for a long time.
In steps d of the present invention; The organic fertilizer first product that will become thoroughly decomposed, dewaters screens, and filters out the Powdered fertilizer auxiliary material that do not become thoroughly decomposed then, and remaining Powdered fertilizer is put into shady and cool ventilation exsiccant environment; Stablized at normal temperatures 10 to 15 days; Form the fertilizer finished product, with the pack of fertilizer finished product, form fertilizer product at last.Said screening process can adopt existing commercially available sieve apparatus to carry out, the sieve apparatus of producing like machine ltd of Shanghai generation nation, or the sieve apparatus produced of the prosperous former vibration device in Xinxiang City ltd or the like.The Powdered organic fertilizer particles degree that obtains after the screening is existing commercially available general chemical fertilizer granularity.The purpose of screening (sieving) be with fully do not become thoroughly decomposed, coarse grained organic auxiliary material sifts out, water cut 75% to 80% mud per ton forms high temperature nuclear reactor fertilizer in mixing to let the organic auxiliary material of these coarse particless that sifts out be applied to next time repeatedly.So; Let manufacturer come to reduce burden on the source problem at organic auxiliary material that (some auxiliary material comes from farm crop; And certain farm crop have only the less time to obtain throughout the year); And can let speed and the efficient of handling mud increase substantially, not receive the influence in organic auxiliary material source.In this step, through screening remaining Powdered fertilizer, become thoroughly decomposed mud and the organic auxiliary material that becomes thoroughly decomposed on a small quantity that promptly sift out are exactly fertilizer, and relief fertilizer was stablized under the normal temperature 10 to 15 days in shady and cool ventilation exsiccant environment, formed the fertilizer finished product.Described with the pack of fertilizer finished product, the formation fertilizer product adopts existing fertilizer pack technology of the package.
The present invention is 40 tons (water ratio 80%) with the mud daily handling ability of the method structure flow line of controlled composting mode Treating Municipal Sewage treatment plant mud; Mud handling capacity increases substantially; Relatively the burning process power consumption significantly reduces side by side the risk except exhaust emissions; Burying treatment process and existing soil utilize technology to eliminate secondary pollution relatively; And turn waste into wealth and effectively reduce the sludge treatment cost, existing relatively sludge composting process method can accurately be grasped mud through gas blower and change into the temperature in the fertilizer process, thereby control mud changes into the process of fertilizer; And then can control the quality that mud changes into fertilizer, and improve the speed that mud changes into fertilizer.
Compare with aforementioned existing like product, the method with controlled composting mode Treating Municipal Sewage treatment plant mud of the present invention can increase substantially the sludge treatment rate, power consumption less, does not produce secondary pollution and effectively reduces the sludge treatment cost.
Content of the present invention combines following examples to do explanation further, but content of the present invention is not limited only to content related among the embodiment.
Embodiment
Embodiment 1: with the method for controlled composting mode Treating Municipal Sewage treatment plant mud, it is characterized in that carrying out according to following steps described in the present embodiment:
A, with organic waste: 2 tons of bacterium slags, 6 tons of stalks, 1 ton of fowl and animal excrement and 1 ton of fallen leaves, be ground into the particle about a centimetre through existing kibbler, be made into the fertilizer auxiliary material;
B, at normal temperatures the mud of water cut 80% organic content height per ton and heavy metal free is packed in the existing stirrer; Ratio and fertilizer auxiliary material according to 1 ton of fertilizer auxiliary material of 1 ton of mud proportioning mix; And add white silk bacterium simultaneously; Ratio is 1 kilogram of white silk bacterium of 10 tons of mud proportionings, utilizes existing stirrer fully to stir then and forms high temperature nuclear reactor fertilizer;
C, with high temperature nuclear reactor fertilizer put into ventilation, under the environment of taking shelter from rain in bar shaped fermenter During High-Temperature Composting; In the During High-Temperature Composting process,, let high temperature nuclear reactor fertilizer inside be rapidly heated, after high temperature nuclear reactor fertilizer internal temperature is warming up to more than 60 degrees centigrade to 60 deg.c through the airduct of gas blower being inserted the bottom blowing hot-air of high temperature nuclear reactor fertilizer; The intensification air feed of machine just turns off the blast; Let high temperature nuclear reactor fertilizer degenerate naturally, when high temperature nuclear reactor fertilizer internal temperature surpasses 80 degrees centigrade, force logical cool breeze cooling with gas blower again; Keep high temperature nuclear reactor fertilizer internal temperature between 70 to 80 degrees centigrade, preferably be controlled at 75 degrees centigrade.
Regulation and control high temperature nuclear reactor fertilizer internal temperature is controlled its internal temperature and is rapidly heated and maintains 75 deg.c and carry out the organism quick fermentation, keeps 15 days, lets mud become thoroughly decomposed, dewater per ton to water cut 15%, forms the organic fertilizer first product;
D, the organic fertilizer first product that will become thoroughly decomposed, dewater screen with sieve apparatus; Filter out the Powdered fertilizer auxiliary material that do not become thoroughly decomposed then; Remaining Powdered fertilizer is put into shady and cool ventilation exsiccant environment, stablized at normal temperatures 15 days, form the fertilizer finished product; With the pack of fertilizer finished product, form fertilizer product at last.
Organic waste described in the present embodiment is that main raw material constitutes with bacterium slag and stalk, and bacterium slag and stalk occupy 80% of machine waste total amount.
Embodiment 2: with the method for controlled composting mode Treating Municipal Sewage treatment plant mud, it is characterized in that carrying out according to following steps described in the present embodiment:
A, with organic waste: 6 tons of bacterium slags, 2 tons of stalks, 1 ton of fowl and animal excrement and 1 ton of fallen leaves, be ground into the particle about two centimetres through existing kibbler, be made into the fertilizer auxiliary material;
B, at normal temperatures the mud of water cut 75% organic content height per ton and heavy metal free is packed in the existing stirrer; Ratio and fertilizer auxiliary material according to 1 ton of fertilizer auxiliary material of 1 ton of mud proportioning mix; And add white silk bacterium simultaneously; Ratio is 1 kilogram of white silk bacterium of 10 tons of mud proportionings, utilizes existing stirrer fully to stir then and forms high temperature nuclear reactor fertilizer;
C, with high temperature nuclear reactor fertilizer put into ventilation, under the environment of taking shelter from rain in bar shaped fermenter During High-Temperature Composting; In the During High-Temperature Composting process,, let high temperature nuclear reactor fertilizer inside be rapidly heated, after high temperature nuclear reactor fertilizer internal temperature is warming up to more than 50 degrees centigrade to 50 deg.c through the airduct of gas blower being inserted the bottom blowing hot-air of high temperature nuclear reactor fertilizer; The intensification air feed of machine just turns off the blast; Let high temperature nuclear reactor fertilizer degenerate naturally, when high temperature nuclear reactor fertilizer internal temperature surpasses 80 degrees centigrade, force logical cool breeze cooling with gas blower again; Keep high temperature nuclear reactor fertilizer internal temperature between 70 to 80 degrees centigrade, preferably be controlled at 75 degrees centigrade.
Regulation and control high temperature nuclear reactor fertilizer internal temperature is controlled its internal temperature and is rapidly heated and maintains 75 deg.c and carry out the organism quick fermentation, keeps 20 days, lets mud become thoroughly decomposed, dewater per ton to water cut 20%, forms the organic fertilizer first product;
D, the organic fertilizer first product that will become thoroughly decomposed, dewater screen with sieve apparatus; Filter out the Powdered fertilizer auxiliary material that do not become thoroughly decomposed then; Remaining Powdered fertilizer is put into shady and cool ventilation exsiccant environment, stablized at normal temperatures 10 days, form the fertilizer finished product; With the pack of fertilizer finished product, form fertilizer product at last.
Organic waste described in the present embodiment is that main raw material constitutes with bacterium slag and stalk, and bacterium slag and stalk occupy 80% of machine waste total amount.
Embodiment 3: with the method for controlled composting mode Treating Municipal Sewage treatment plant mud, it is characterized in that carrying out according to following steps described in the present embodiment:
A, with organic waste: 10 tons of stalks are ground into the particle about a centimetre through existing kibbler, are made into the fertilizer auxiliary material;
B, at normal temperatures the mud of water cut 75% organic content height per ton and heavy metal free is packed in the existing stirrer; Ratio and fertilizer auxiliary material according to 1 ton of fertilizer auxiliary material of 1 ton of mud proportioning mix; And add white silk bacterium simultaneously; Ratio is 1 kilogram of white silk bacterium of 10 tons of mud proportionings, utilizes existing stirrer fully to stir then and forms high temperature nuclear reactor fertilizer;
C, with high temperature nuclear reactor fertilizer put into ventilation, under the environment of taking shelter from rain in bar shaped fermenter During High-Temperature Composting; In the During High-Temperature Composting process,, let high temperature nuclear reactor fertilizer inside be rapidly heated, after high temperature nuclear reactor fertilizer internal temperature is warming up to more than 55 degrees centigrade to 55 deg.c through the airduct of gas blower being inserted the bottom blowing hot-air of high temperature nuclear reactor fertilizer; The intensification air feed of machine just turns off the blast; Let high temperature nuclear reactor fertilizer degenerate naturally, when high temperature nuclear reactor fertilizer internal temperature surpasses 80 degrees centigrade, force logical cool breeze cooling with gas blower again; Keep high temperature nuclear reactor fertilizer internal temperature between 70 to 80 degrees centigrade, preferably be controlled at 75 degrees centigrade.
Regulation and control high temperature nuclear reactor fertilizer internal temperature is controlled its internal temperature and is rapidly heated and maintains 75 deg.c and carry out the organism quick fermentation, keeps 18 days, lets mud become thoroughly decomposed, dewater per ton to water cut 18%, forms the organic fertilizer first product;
D, the organic fertilizer first product that will become thoroughly decomposed, dewater screen with sieve apparatus; Filter out the Powdered fertilizer auxiliary material that do not become thoroughly decomposed then; Remaining Powdered fertilizer is put into shady and cool ventilation exsiccant environment, stablized at normal temperatures 18 days, form the fertilizer finished product; With the pack of fertilizer finished product, form fertilizer product at last.
Organic waste described in the present embodiment is that main raw material constitutes with the stalk, and stalk occupies 100% of machine waste total amount.
Claims (2)
1. method with controlled composting mode Treating Municipal Sewage treatment plant mud is characterized in that carrying out according to following steps:
A, organic waste is ground into one centimetre to two centimetres particle, is made into the fertilizer auxiliary material;
B, at normal temperatures the mud of water cut 75% to 80% organic content height per ton and heavy metal free is packed in the existing stirrer; Ratio and fertilizer auxiliary material according to 1 ton of fertilizer auxiliary material of 1 ton of mud proportioning mix; Add the high temperature bacterium of becoming thoroughly decomposed simultaneously; Ratio is 1 kilogram of high temperature of 10 tons of mud proportionings bacterium of becoming thoroughly decomposed, and the said high temperature bacterium of becoming thoroughly decomposed is white silk bacterium, fully stirs then and forms high temperature nuclear reactor fertilizer;
C, high temperature nuclear reactor fertilizer is put into ventilation, carried out During High-Temperature Composting under the environment of taking shelter from rain; In the During High-Temperature Composting process, regulate and control high temperature nuclear reactor fertilizer internal temperature through gas blower; Controlling its internal temperature is rapidly heated and maintains between 70 to 80 degrees centigrade and carry out the organism quick fermentation; Kept 15 to 20 days, and let mud become thoroughly decomposed, dewater per ton, form the organic fertilizer first product to water cut 15% to 20%;
D, the organic fertilizer first product that will become thoroughly decomposed, dewater screen; Filter out the Powdered fertilizer auxiliary material that do not become thoroughly decomposed then; Remaining Powdered fertilizer is put into shady and cool ventilation exsiccant environment, stablized at normal temperatures 10 to 15 days, form the fertilizer finished product; With the pack of fertilizer finished product, form fertilizer product at last.
2. the method for the mode Treating Municipal Sewage treatment plant mud with compost as claimed in claim 1; It is characterized in that said organic waste is with the bacterium slag or/and stalk is the organic waste that main raw material constitutes, the bacterium slag is or/and stalk occupies 80%～100% of machine waste total amount.
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| CN102167629A (en) * | 2011-01-10 | 2011-08-31 | 王斌 | Method for preparing biological organic fertilizer from sludge serving as raw material and application of biological organic fertilizer |
| CN102649647B (en) * | 2011-02-23 | 2013-10-30 | 吉林师范大学 | Method for rapid composting by combining sludge of different types |
| CN102260104B (en) * | 2011-05-20 | 2013-11-27 | 烟台大学 | Method for producing biological organic fertilizer by fermenting sludge |
| CN104557176B (en) * | 2015-01-29 | 2017-12-29 | 中冶赛迪工程技术股份有限公司 | Collaboration sludge aerobic zymotechnique after a kind of Chinese medicine slag is biological dewatered |
| CN106277685A (en) * | 2016-09-28 | 2017-01-04 | 西安金清泰环境科技有限公司 | A kind of sludge treating system and method for sludge treatment |
| CN107032890A (en) * | 2017-05-05 | 2017-08-11 | 山水环境科技股份有限公司 | A kind of method for recycling treatment Sediments |
| CN109748625A (en) * | 2019-03-26 | 2019-05-14 | 焦作市田美生物工程有限公司 | A kind of balling-up fermentation process of ecological organic fertilier |
| CN109983988A (en) * | 2019-05-12 | 2019-07-09 | 贵州省贵福菌业发展有限公司 | A kind of elegant precious mushroom cultivation bacteria stick and preparation method thereof |
| CN110590418A (en) * | 2019-09-03 | 2019-12-20 | 广州中科鑫汇生物科技有限公司 | Production process of municipal sludge fermented organic fertilizer |
| CN110724017A (en) * | 2019-12-07 | 2020-01-24 | 新晃县污水处理有限责任公司 | Method for preparing biomass fertilizer by using sludge compost |
| CN112898056A (en) * | 2021-01-28 | 2021-06-04 | 沧州志昂科技有限公司 | Advanced technology for resource utilization of municipal domestic sludge |
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