CN106892690A - Sewage treatment plant's domestic sludge compost method of disposal - Google Patents
Sewage treatment plant's domestic sludge compost method of disposal Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 67
- 239000002361 compost Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000010865 sewage Substances 0.000 title claims abstract description 17
- 238000000855 fermentation Methods 0.000 claims abstract description 69
- 230000004151 fermentation Effects 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000002689 soil Substances 0.000 claims abstract description 32
- 239000000047 product Substances 0.000 claims abstract description 27
- 235000015097 nutrients Nutrition 0.000 claims abstract description 22
- 235000016709 nutrition Nutrition 0.000 claims abstract description 16
- 230000035764 nutrition Effects 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000011265 semifinished product Substances 0.000 claims abstract description 10
- 244000005700 microbiome Species 0.000 claims abstract description 8
- 230000032683 aging Effects 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000012856 packing Methods 0.000 claims abstract description 5
- 239000002068 microbial inoculum Substances 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims description 15
- 238000009423 ventilation Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 9
- 239000005416 organic matter Substances 0.000 claims description 9
- 238000005202 decontamination Methods 0.000 claims description 4
- 230000003588 decontaminative effect Effects 0.000 claims description 4
- 210000003608 fece Anatomy 0.000 claims description 4
- 241000588724 Escherichia coli Species 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims description 3
- 235000021049 nutrient content Nutrition 0.000 claims 1
- 102000002322 Egg Proteins Human genes 0.000 abstract description 4
- 108010000912 Egg Proteins Proteins 0.000 abstract description 4
- 210000004681 ovum Anatomy 0.000 abstract description 4
- 230000003071 parasitic effect Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 244000052769 pathogen Species 0.000 abstract description 2
- 230000001717 pathogenic effect Effects 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000007873 sieving Methods 0.000 abstract 1
- 238000009264 composting Methods 0.000 description 14
- 238000011161 development Methods 0.000 description 8
- 230000018109 developmental process Effects 0.000 description 8
- 239000003337 fertilizer Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
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- 238000005516 engineering process Methods 0.000 description 5
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- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
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- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000170 cell membrane Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
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- 150000001875 compounds Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
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- 235000013305 food Nutrition 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009384 sea disposal Methods 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000010564 aerobic fermentation Methods 0.000 description 1
- 230000001195 anabolic effect Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 235000013348 organic food Nutrition 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
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- 210000002955 secretory cell Anatomy 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- 239000011573 trace mineral Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Botany (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of sewage treatment plant's domestic sludge compost method of disposal, comprise the following steps：It is placed in fermentation tank after sludge and fermentative microorganism premix are stirred, the fermentation semi-finished product for carrying out the index request that testing result can be reached the organic nutrition earth material products of NY525 2012 for one time fermentation (main fermentation stage), secondary fermentation (ageing stage) successively carry out drying and other treatment, moisture content is set to drop within 30%, then after it is mixed with plant ash as being mixed in feed bin, carry out the addition of microbial inoculum, after breaing up sieving, metering packing.The present invention perfect sludge stabilizing, harmless treatment facility, by the compost treatment that aerobic high-heat fermentation is carried out to sludge, further reduce moisture content, removal stink, kill parasitic ovum and pathogen, stabilisation and innoxious requirement are reached, and organic nutrient soil series of products to gained carry out recycling.
Description
Technical field
The present invention relates to field of sludge treatment, and in particular to a kind of sewage treatment plant's domestic sludge compost method of disposal.
Background technology
With Chinese society economic development and the quickening of urbanization process, municipal sewage treatment amount is increasing, accordingly
Sludge quantity is also being on the increase.Solve in " sludge besieged city ", the schedule of urban construction and development is gradually put on by domestic many big cities.
Such as it is unable to safe handling disposal, it will cause the sludge in sewage treatment plant largely to overstock, having a strong impact on sewage treatment plant just
Often operation, in some instances it may even be possible to cause comprehensive paralysis of sewage disposal system, so as to directly influence the river water environmental in the city, can
The effort for making the city for many years control river pollution treatment is thrown into the eastward flowing stream.Therefore, it is that urban infrastructure is built to build specific resistance to filtration facility
It is the important environment-friendly engineering of relation huge numbers of families if essential important component.
In recent years, production of the country to organic nutrient soil is attached great importance to, and favours to support that it is sent out by policy aspect
Exhibition, since in June, 2008, according to the Ministry of Finance and the documentation requirements of the State Tax Administration, biological organic nutrition native produce is complete
It is tax-free, moreover, the national phases such as " pollution-free food action plan " " pollution-free food " " organic food " certification that also sequentially activate
Plan and policy are closed, quality safety management and control is carried out to agricultural product, the market demand of organic nutrient soil has also been driven to a certain extent.
Organic nutrient soil can increase the content of organic matter in soil, reduce using the soil hardening situation caused by chemical fertilizer, improve soil
The structure of earth, beneficial to the sustainable development of agricultural.And the nutrient of common chemical fertilizer is single, content is high, fertilizer efficiency is fast, the duration is short,
Organic nutrient soil nutrient is complete, and persistently, continuous use will increase agron to fertilizer efficiency, lift soil entropy, realize that agricultural is produced
The increasing both production and income of product, in addition organic nutrient soil or organic farm products production and certification requirement.Therefore, to municipal sewage
The discarded object that treatment plant and plant produce carries out comprehensive utilization and effectively treatment, develops biomass energy, reclaims organic nutrition
Soil resource, by pollution administration, environment purification, reclaim the energy, comprehensively utilize, improving the ecological environment organically combines, and walks life
The road of state Animal Husbandry Industrialization sustainable development, meets the requirement of " Accelerating The Construction resource-conserving and environment-friendly society ",
Meet the principle of waste remediation " minimizing, resource, innoxious and ecology ".
With socio-economic development and the raising of living standards of the people, Hubei Xiangfan is dirty as the situation of all parts of the country
Water treatment plant's sludge discharge is increasing, it has also become pollution urban environment, influence civil plantation, the society of puzzlement economic development
How problem, follow the principle of sustainable development, reduces sludge discharge, turns harm into good, and turns waste into wealth, and realizes organic waste
The recycling of matter, from suitable local environmental conditions and economic level, with environmental protection, safety, the sludge of economic traits at
Reason disposal technology, fundamentally realizes innoxious, the resource of specific resistance to filtration, is the weight that Xiangfan environmental protection faces
Will and it is urgent task, very urgent.
At present, the Treatment of Sludge mode for using both at home and abroad mainly has landfill, burning, throws sea and Land_use change.Landfill disposal：
Handling process is ripe, invests low, simple to operate, instant effect, is always the major way of early stage sludge treatment；But due to needing to account for
Use a large amount of soils, and transport difficult, deal with improperly it is also possible to cause the pollution of body of groundwater, use in this way than
Example declines year by year.Incineration disposal：The heat energy produced by burning can be made full use of, treatment is thorough；But the investment of the handling process
It is higher with operating cost, and the gas and ashes that are produced in burning process are likely to cause secondary pollution.Throw sea disposal：Sludge
Sea meeting Marine Pollution is thrown, the marine eco-environment is endangered, forbidden by maritime international law.Chinese Government receives 3 at the beginning of 1994
International agreement, promises to undertake on 2 20th, 1994 not at sea disposal of commercial waste and sewage sludge.Land_use change：Utilize
Sludge is rich in the nutritional ingredients such as nitrogen, phosphorus, the potassium needed for growth and development of plants and various trace elements and can improved soil structure
Organic matter, organic nutrient soil, compound organic and inorganic fertilizer and soil are can be made into by harmless treatment and after adding appropriate additive
Earth modifying agent, these products are increase soil fertility by the means of applying fertilizer, and promote plant growth, meanwhile, also by this ring of soil
Border clarifier reaches the purpose of digested sludge.At present, the industrially developed country such as the U.S., European Union agricultural sludge reach 39%~
49%, the major way as Treatment of Sludge.But sludge is also harmful organic containing parasite (ovum), heavy metal and difficult degradation
Thing, if being directly applied to farmland without harmless treatment and manual control, it will bad shadow is caused to soil, crops
Ring, therefore, it is agricultural as organic nutrient soil after the selected compost hazard-free treatment of this project construction scheme.
Modern sludge technology be since the sixties in last century develop, formd various perfect process systems and
Complete set of equipments.The reasons such as the market due to composting production, the compost treatment of municipal sludge had once once been in developed country
Stagnate even atrophing state.Into the nineties, the Sludge landfill and burning disposal standard of American-European countries are improved, processing cost with
Increase；Sludge composting treatment is again in rising trend.
Used as one of municipal sludge processing means, exactly be put into domestic sludge in round by compost, using micro-
Biological (or additional kind of strain) carries out fermentative degradation organic matter, and making it stable, innoxious and can safely be used in soil.
According to the microorganism played a role in composting process to the different demands of oxygen, composting process can be divided into aerobic compost and anaerobism again
The class of compost two.Modern composting technology typically uses aerobic process.
Aerobic compost is under aerobic conditions, to be carried out by the effect of aerobic microbiological.Microorganism by cell membrane and
The infiltration function of cell membrane directly absorbs the soluble organic matter in debirs；Microorganism will also by secretory cell exoenzyme
Insoluble colloidal organic matter is decomposed into solable matter and penetrates into cell utilization.Microorganism is by catabolism and anabolic
Process, the energy needed for producing own growth, activity is simultaneously synthesizing to be converted into new cellular material.
Aerobic compost chemistry reaction equation be：
Knowable to reaction equation, domestic sludge resolves into stabilization moisture and organic under aerobic conditions by aerobic microbiological
Thing, while discharging waste gas and release heat, forms hot fermentation process, kills the pathogenic bacteria in sludge and parasitic ovum, reaches
It is innoxious.Then, sludge enters the maturation stage of compost, it is more difficult to which the polymer of decomposition is also resolved into simply by aerobic
Carbohydrate.Now the temperature of compost is gradually as little as stablized.The technical process of aerobic compost method includes：Pre-treatment (pre- place
Reason), main fermentation (one time fermentation), ageing (secondary fermentation), post processing, deodorization, processing and store etc. operation.
One time fermentation, secondary fermentation are the core process of compost method, wherein sludge components (C/N), moisture content, temperature and
Ventilation condition is the principal element for influenceing ferment effect.
By biofermentation mode, fermentation is referred to as anaerobic fermentation under anaerobic condition, and fermentation is referred to as aerobic hair under oxygen supply state
Ferment；Can be divided into static compost and dynamic compost by sludge state in which；By Zymolysis Equipment form can be divided into closed compost and
Open type compost；Can be divided into batch (-type) compost and continous way compost by sludge stream form.The compost side that domestic and international project is used
Formula mainly has：
(1) gravity-flow ventilation static compost.This is a kind of simplest composting mode, and sludge is piled height by usual ground on the scene
2 meters or so of strip, stockpile inside is in pressured state, and the air of outside can not usually be diffused to internal and make it be in anaerobism
State, peculiar smell is big, ferments insufficient, and uneven, the cycle is long, needs 3-6 more than the month, sludge become thoroughly decomposed it is latter as by Screening Treatment,
Screenings is made thick compost and is sold, and common equipment is loading machine, rotary screen and belt feeder.Gravity-flow ventilation static compost has open area
The concrete form such as compost and silo-type compost.
(2) forced ventilation static compost.To overcome the not enough shortcoming of oxygen supply in gravity-flow ventilation static compost stockpile, typically exist
Stockpile bottom alongst sets ventilation duct or ventilation slot, by blower fan according to the fermentation appearance forced ventilation of heap body.Pass through
Control ventilation can realize a certain degree of control to the oxygen demand of heap body and water content, and its fermentation period is brighter than gravity-flow ventilation
It is aobvious to shorten, generally more than 10 days.Forced ventilation static compost is generally trough composting.
(3) mechanical turning compost.Sludge overturns sludge and promotes and air using loading machine or turning machine during the fermentation
Contact, is beneficial to aerobic fermentation.There is the concrete form such as open area compost and fermenting workshop compost.
(4) horizontal fermentation roller.Also known as up to promise roller, the installation for fermenting main equipment is one long 20-35 meters, diameter 2-
3.5 meters of horizontal drum, windrow from one end throat-fed of roller, material in the presence of cylinder internal friction, with cylinder
Rotation and lift, while again because of deadweight it is small fall, repeatedly rise fall, material by equably turning and with infeed air fully connect
Touch, and fermented in the presence of aerobic microbiological.Due to when cylinder inclines material to fall along direction of rotation liter, gradually to cylinder
Exit end is moved, and is capable of achieving continuous discharge.Drum rotation speed is generally 0.2-1.0 revs/min, and Material Filling Ratio is 80% left
The right side, temperature is 45-65 degree in cylinder, and the residence time is 1-6 days.Fermentation roller simple structure, manufacture, installation, operation, maintenance side
Just；With good function of mixing and stirring, effective control parameter to optimum state, one time fermentation cycle time was reduced to 36-48 hours
Floor space and the pollution to environment.But its fatal defects is operating cost too high.
The content of the invention
To solve the above problems, the invention provides a kind of sewage treatment plant's domestic sludge compost method of disposal.
To achieve the above object, the technical scheme taken of the present invention is：
A kind of sewage treatment plant's domestic sludge compost method of disposal, comprises the following steps：
S1, sludge and fermentative microorganism are premixed so that than regulation to 25, moisture content is transferred to 60% to the C/N of mixed material
Left and right, pH value is transferred to 7.0 or so；
Being placed in fermentation tank after the mixture of gained is stirred uniformly carries out one time fermentation (main fermentation), and fermentation is carried out
First time turning is carried out after 48 hours, hereafter turning, main fermentation is carried out in time when fermentation temperature lifting is to more than 62 DEG C
After stage terminates, 1.5m or so stackings are piled into aging workshop, carry out secondary fermentation (ageing), period every turning in 2 days 1 time,
Finally give semi-finished product；Wherein, the control parameter of one time fermentation is：Moisture content 60% or so, C/N than 25 or so, ventilation
0.1-0.2m3/min·m3, blast 500mmH2O, 55-65 DEG C of temperature continues 5-7 days, fermentation period 5-7 days；One time fermentation terminates
Index is：Volume decrement 22%, moisture content is down to 48%, and dry reduces by 5% or so, C/N than 20 or so；The control of secondary fermentation
Parameter processed is：Fermentation period 4-6 days, temperature control is at 45-55 DEG C；Secondary fermentation terminates index：Moisture content drops to 40% or so,
Dry reduces 3% or so, and volume of material reduces 15%, C/N ＜ 20；
N, P205, K20 content of organic matter and pH value index of the fermentation semi-finished product obtained by S3, detection, testing result can reach
To after the index request of NY525-2012 organic nutrition earth material products, then drying and other treatment is carried out, moisture content is dropped within 30%；
S4, by the fermentation semi-finished product and plant ash obtained by step S3 by volume 7: 3 ratios mix as in feed bin mix
Afterwards, continuous double shaft mixer is transported to, the addition of microbial inoculum is then carried out by weight 1/1000-2/1000, then by skin
Band conveyer is transported to standing crusher carries out break process；
S5, the pellet through sieves extension set by broken gained, it is ensured that product indices reach organic nutrition earth material product quality
After standard, metering packing is carried out.
Wherein, the organic nutrition earth material target level of product quality is：
By GB8172-87 decontamination of human excreta sanitary standards, the innoxious index and its organic nutrient soil nutrient of sludge are detected
Content；So that each index reaches innoxious standard and agricultural standards, induced worm egg death rate：More than 95%, Escherichia coli：10-1-
10-2, compost granularity≤25mm；Product is brown, and humification is high, no foul smell, loosely, does not attract fly.
The invention has the advantages that：
Perfect sludge stabilizing, harmless treatment facility, by carrying out the compost treatment of aerobic high-heat fermentation to sludge,
Further reduce moisture content, removal stink, kill parasitic ovum and pathogen, reach stabilisation and innoxious requirement, and
Organic nutrient soil series of products to gained carry out recycling.Overall goal is while pollution administration, by sludge
The utilization of soil, ecology etc., solves the problems, such as the final home to return to of sludge, realizes sludge zero discharge truly.
Brief description of the drawings
Fig. 1 be the embodiment of the present invention in front end mixing turn over throw zymotechnique flow chart.
Fig. 2 is the flow chart of rear end processing technology in the embodiment of the present invention.
Specific embodiment
In order that objects and advantages of the present invention become more apparent, the present invention is carried out further with reference to embodiments
Describe in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
As Figure 1-Figure 2, a kind of sewage treatment plant's domestic sludge compost method of disposal is the embodiment of the invention provides, is wrapped
Include following steps：
S1, sludge and fermentative microorganism are premixed so that than regulation to 25, moisture content is transferred to 60% to the C/N of mixed material
Left and right, pH value is transferred to 7.0 or so；
S2, by the mixture of gained be stirred it is uniform after be placed in fermentation tank and carry out one time fermentation (main fermentation), ferment
First time turning is carried out after carrying out 48 hours, hereafter turning is carried out in time when fermentation temperature lifting is to more than 62 DEG C, it is main
After fermentation stage terminates, 1.5m or so stackings are piled into aging workshop, carry out secondary fermentation (ageing), period every turning 1 in 2 days
It is secondary, finally give semi-finished product；Wherein, the control parameter of one time fermentation is：Moisture content 60% or so, C/N than 25 or so, ventilation
0.1-0.2m3/min·m3, blast 500mmH2O, 55-65 DEG C of temperature continues 5-7 days, fermentation period 5-7 days；One time fermentation terminates
Index is：Volume decrement 22%, moisture content is down to 48%, and dry reduces by 5% or so, C/N than 20 or so；The control of secondary fermentation
Parameter processed is：Fermentation period 4-6 days, temperature control is at 45-55 DEG C；Secondary fermentation terminates index：Moisture content drops to 40% or so,
Dry reduces 3% or so, and volume of material reduces 15%, C/N ＜ 20；
N, P205, K20 content of organic matter and pH value index of the fermentation semi-finished product obtained by S3, detection, testing result can reach
To after the index request of NY525-2012 organic nutrition earth material products, then drying and other treatment is carried out, moisture content is dropped within 30%；
S4, by the fermentation semi-finished product and plant ash obtained by step S3 by volume 7: 3 ratios mix as in feed bin mix
Afterwards, continuous double shaft mixer is transported to, the addition of microbial inoculum is then carried out by weight 1/1000-2/1000, then by skin
Band conveyer is transported to standing crusher carries out break process；
S5, the pellet through sieves extension set by broken gained, it is ensured that product indices reach organic nutrition earth material product quality
After standard, metering packing is carried out.
The further curing of compost material and drying and other treatment：The organic matters such as municipal sludge, by after secondary fermentation, heap
Fertile material can meet decontamination of human excreta sanitary index after During High-Temperature Composting is processed, and, the organic matter of its mixed material is basic
Tend towards stability state, and in addition to material water ratio, other indices tend towards stability substantially, therefore, it can be examined with reference to quality
Result is surveyed, it is determined that curing measure；Drying and other treatment：By material after maturation process, in addition to moisture content is higher, other indices
Meet target level of product quality, therefore, it can select drying method according to weather conditions, the desiccation of place threshing ground is selected as far as possible,
Energy resource consumption is reduced, the part that cannot be shone completely is done in place, carry out drying and processing.So after overcuring and drying and other treatment, material
Moisture content is dropped to less than or equal to 30%, and dry about loses 1%, and volume reduces 3%.
Organic nutrient soil is produced：By the material after drying and other treatment, every chemical index has reached product quality requirement,
Therefore, material must be broken up, sieve, and according to knowhow, material oversize about 20%, return to batch plant has as auxiliary
Machine thing, it is ensured that the fineness of screenings, reaches product index requirement, i.e.,：Material≤2mm, then can warehouse entry by metering packing
For sale, according to design scale, split run production capacity reaches 15 ton per days, disclosure satisfy that the requirement of daily Treatment of Sludge, solves sludge
Composting handling problems.
The organic nutrition earth material target level of product quality is：
By GB8172-87 decontamination of human excreta sanitary standards, the innoxious index and its organic nutrient soil nutrient of sludge are detected
Content；So that each index reaches innoxious standard and agricultural standards, induced worm egg death rate：More than 95%, Escherichia coli：10-1-
10-2, compost granularity≤25mm；Product is brown, and humification is high, no foul smell, loosely, does not attract fly.
Embodiment 1
In order to more preferably complete urban life Sludge Composting treatment task, in March 9 this year, carry out sludge
Composting disposal experiment, fetches sludge and mixes in the ratio of volume 1: 1 with mushroom residue, so from peaceful shop town sewage treatment plant
Afterwards, 1kg fermenting agents are added to compound per ton carries out compost fermentation experiment, by the fermentation of more than 20 days, by sludge and sludge with
The organic nutrition earth material of mushroom residue co compostingization treatment, shows through composing Shanghai Co., Ltd of Buddhist nun's test group test result：Too
The sludge of flat shop sewage disposal, its content of beary metal is relatively low, the requirement that Composting treatment produces organic nutrient soil can be met, to heap
Organic nutrient soil product quality testing result being obtained after extensive use of chemical fertilizer treatment and being shown in Table 1, its quality can also meet organic nutrition native produce substantially
Quality requirement.Therefore, the sludge of peaceful shop sewage treatment plant can produce organic nutrient soil, and our company by Composting treatment
Also have technical merit and ability carries out Composting treatment production organic nutrient soil by sludge.
The Nutrition Soil product quality of table 1 detects table
Embodiment 2
Compost treatment：Design day treatment 15 tons of sludge, moisture percentage in sewage sludge 90-93%, by once, secondary fermentation, become thoroughly decomposed
Organic nutrient soil is made after desiccation, the harmless rate 100% of municipal sludge is finally realized, meets Hubei Province dirty to urban life
The requirement of mud treatment.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (2)
1. a kind of sewage treatment plant's domestic sludge compost method of disposal, it is characterised in that comprise the following steps：
S1, sludge and fermentative microorganism are premixed so that than regulation to 25, moisture content is transferred to 60% or so to the C/N of mixed material,
PH value is transferred to 7.0 or so；
S2, by the mixture of gained be stirred it is uniform after be placed in one time fermentation carried out in fermentation tank, after fermentation carries out 48 hours
First time turning is carried out, hereafter turning is carried out in time when fermentation temperature lifting is to more than 62 DEG C, main fermentation stage terminates
Afterwards, 1.5m or so stackings are piled into aging workshop, carries out secondary fermentation, period every turning in 2 days 1 time finally gives semi-finished product；
Wherein, the control parameter of one time fermentation is：Moisture content 60% or so, C/N than 25 or so, ventilation 0.1-0.2m3/min·m3,
Blast 500mmH2O, 55-65 DEG C of temperature continues 5-7 days, fermentation period 5-7 days；One time fermentation terminates index：Volume decrement
22%, moisture content is down to 48%, and dry reduces by 5% or so, C/N than 20 or so；The control parameter of secondary fermentation is：Fermentation week
4-6 days phase, temperature control is at 45-55 DEG C；Secondary fermentation terminates index：Moisture content drops to 40% or so, and it is left that dry reduces 3%
The right side, volume of material reduces 15%, C/N ＜ 20；
N, P205, K20 content of organic matter and pH value index of the fermentation semi-finished product obtained by S3, detection, testing result can reach
After the index request of NY525-2012 organic nutrition earth material products, then drying and other treatment is carried out, moisture content is dropped within 30%；
S4, by the fermentation semi-finished product and plant ash obtained by step S3 by volume 7: 3 ratios mix as in feed bin mix after, it is defeated
Continuous double shaft mixer is sent to, the addition of microbial inoculum is then carried out by weight 1/1000-2/1000, then by Belt Conveying
Machine is transported to standing crusher and carries out break process；
S5, the pellet through sieves extension set by broken gained, it is ensured that product indices reach organic nutrition earth material target level of product quality
Afterwards, metering packing is carried out.
2. a kind of sewage treatment plant's domestic sludge compost method of disposal as claimed in claim 1, it is characterised in that described organic
Nutrition earth material target level of product quality is：
By GB8172-87 decontamination of human excreta sanitary standards, the innoxious index and its organic nutrient soil nutrient content of sludge are detected；
So that each index reaches innoxious standard and agricultural standards, induced worm egg death rate：More than 95%, Escherichia coli：10-1-10-2, heap
Fertile granularity≤25mm；Product is brown, and humification is high, no foul smell, loosely, does not attract fly.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903089A (en) * | 2017-11-30 | 2018-04-13 | 兰秋波 | A kind of method for preparing fertilizer using accessory substance obtained by treatment of Organic Wastewater |
| CN108675853A (en) * | 2018-05-10 | 2018-10-19 | 江苏恒丰科技有限公司 | A method of preparing Nutrition Soil by raw material of sludge |
| CN108794087A (en) * | 2018-05-10 | 2018-11-13 | 江苏恒丰科技有限公司 | It is a kind of using ER-BIO complex microbial communities by the processing method of Sludge Composting |
| CN110127986A (en) * | 2019-05-15 | 2019-08-16 | 河北九知农业科技有限公司 | A kind of sludge reduction, innoxious, resource utilization method and product line device |
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| CN107903089A (en) * | 2017-11-30 | 2018-04-13 | 兰秋波 | A kind of method for preparing fertilizer using accessory substance obtained by treatment of Organic Wastewater |
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| CN110156498A (en) * | 2019-04-30 | 2019-08-23 | 江苏思威博生物科技有限公司 | A kind of feces of livestock and poultry high temperature desiccation microbial inoculum and its application method |
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| CN110194689A (en) * | 2019-07-17 | 2019-09-03 | 新疆根力多生物科技有限公司 | A kind of the production mechanism and method of reed fodder and sludge composting process for producing organic fertilizer |
| CN110668900A (en) * | 2019-10-28 | 2020-01-10 | 湖北大学 | Preparation method of compost balls for dredging black and odorous bottom mud in river, lake and reservoir |
| CN110668900B (en) * | 2019-10-28 | 2021-09-14 | 湖北大学 | Preparation method of compost balls for dredging black and odorous bottom mud in river, lake and reservoir |
| CN111205116A (en) * | 2020-03-31 | 2020-05-29 | 苏州腾康环保科技有限公司 | Method for odorless compost fermentation by utilizing polymer covering film |
| CN113443933A (en) * | 2020-11-06 | 2021-09-28 | 吉林省农业科学院 | Intelligent high-temperature aerobic fermentation composting system and method for polymer nano-film |
| CN115433027A (en) * | 2022-10-25 | 2022-12-06 | 四川农业大学 | Preparation method and application of municipal domestic sludge compost |
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Application publication date: 20170627 |