CN108947728A - A kind of preparation method of municipal sludge rare earth organic fertilizer - Google Patents
A kind of preparation method of municipal sludge rare earth organic fertilizer Download PDFInfo
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- CN108947728A CN108947728A CN201810867376.0A CN201810867376A CN108947728A CN 108947728 A CN108947728 A CN 108947728A CN 201810867376 A CN201810867376 A CN 201810867376A CN 108947728 A CN108947728 A CN 108947728A
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- rare earth
- fermentation
- sludge
- municipal sludge
- organic fertilizer
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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
- 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
- C05F5/002—Solid waste from mechanical processing of material, e.g. seed coats, olive pits, almond shells, fruit residue, rice hulls
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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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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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Pest Control & Pesticides (AREA)
- Mechanical Engineering (AREA)
- Botany (AREA)
- Soil Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of preparation methods of municipal sludge rare earth organic fertilizer, method includes the following steps: municipal sludge and the peanut shell and rare earth marine sediment of crushing are mixed, material is transported on loading machine by belt conveyor dress after mixing, and loading machine is transported to fermentation in fermentation tank；Material is from fermentation tank front toward rear portion heap into until groove body is covered with；Ventilation appropriate is carried out by being located at the aerating system of fermentation cabin bottom simultaneously, mixed material is maintained to be in the state that oxygen content is filled, carries out aerobic fermentation；Material after fermenting, being decomposed is delivered to screening machine by conveyer belt, and conveyer belt and screening machine are closed, and oversize returns to returning charge storehouse as back-mixing material after screening, and screenings is fermented product, and fermented product prepares final rare earth Organic sludge manure through being granulated.One-step fermentation of the present invention prepares rare earth Organic sludge manure, expands organic fertilizer function, increases the product market vitality, reduces processing cost, achievees the purpose that municipal sludge processing stabilisation, innoxious and recycling.
Description
Technical field
The invention belongs to organic fertilizer preparation technical fields, are related to a kind of preparation method of municipal sludge rare earth organic fertilizer, tool
It says to body, is related to a kind of method that one-step fermentation prepares sludge rare earth organic fertilizer.
Background technique
It is well known that municipal sludge refers to generated excess sludge after municipal sewage plant's processing sanitary wastewater, warp
Addition macromolecular polyacrylamide flocculant is crossed, the solid waste that moisture content is 80% or so after filter-press dehydration, due to city dirt
Mud yield is big, and nitrogen rich in, phosphorus, potassium and organic principle nutriment, but also contains a large amount of parasitic ovum, disease
The harmful components such as pathogenic microorganism, bacterium, synthesis of organic substance and heavy metal ion；Deal with meeting pollution of ecological environment, Er Qieshi improperly
Waste to sludge resource.
The method that China's Treatment of Sludge mostly uses burning, sanitary landfills and aerobic compost at present has in these processing methods
Processing cost it is excessively high, some causes secondary pollution to environment, has plenty of the waste to sludge resource.There are these new environment
Problem, current Ecological Civilization Construction idea of development is inconsistent with China.Wherein, aerobic compost is that municipal sludge is stabilized, provided
The method in source, however, sludge product after simple municipal sludge aerobic fermentation is since appearance is bad, fertilizer efficiency is single, and market is living
Power is not high, at high cost, occurs serious problem in sludge handling process, restricts the processing and recycling benefit of municipal sludge
With.There is an urgent need to seek a kind of efficient, practical recycling sludge processing and utilizing technology.
Summary of the invention
It is an object of the invention to overcome defect existing in the prior art, a kind of municipal sludge rare earth organic fertilizer is proposed
Preparation method, make full use of municipal sludge resource, municipal sludge passes through the method for aerobic compost, and killing pathogen keeps sludge steady
Fixedization adds rare earth marine sediment, and one-step fermentation prepares rare earth Organic sludge manure, expands organic fertilizer function, increases product city
Field vigor, reduces processing cost, achievees the purpose that municipal sludge processing stabilisation, innoxious and recycling, thoroughly solution restricts
The problem of municipal sludge processing and utilization.
Its technical solution is as follows:
A kind of preparation method of municipal sludge rare earth organic fertilizer, comprising the following steps:
Step 1, by moisture content be 80% municipal sludge and crushing peanut shell and rare earth marine sediment by weight
50: 49: 1 mixing, make the moisture content about 60% or so of sludge after mixing, carbon-nitrogen ratio (C/N) about 20: 1；
Material is transported on loading machine by belt conveyor dress after step 2, mixing, and loading machine is transported to hair in fermentation tank
Ferment.Material is from fermentation tank front toward rear portion heap into until groove body is covered with.Simultaneously by be located at the aerating system of fermentation cabin bottom into
Row ventilation appropriate, maintains mixed material to be in enough oxygen content, oxygen-supplying amount value range 0.05-0.2m3/m3.min (unit is indicated
The volume number of oxygen needed for every cube of sludge in time), entire fermentation process undergoes 3 stages, temperature rise period, high temperature rank
Section and cold stage.Wherein, temperature rise period, sludge body rise to 45 DEG C from environment temperature, and major microorganisms are micro- with mesophilic property
Based on biology, substrate is decomposed based on carbohydrate and starch；Hot stage rises to 65-70 DEG C, complicated organic matter such as hemicellulose
Start to decompose with cellulose and protein, most of parasitic ovum and pathogenic microorganism can be killed；Temperature-fall period, hot stage
Cold stage is dropped to, organic matter is made to tend towards stability, this stage oxygen demand greatly reduces, and carries out appropriate aerobic fermentation.Fermentation time
About 20 days, complete fermentation process；
In composting process, with the aggravation of microbial activities in material, heat that microorganism decomposition organic matter is released
When amount is greater than the heat consumption of compost, compost temperature just rises.The automatic control of temperature is completed by temperature-gas supply feedback system；
Step 3, fermentation, it is decomposed after material screening machine is delivered to by conveyer belt, conveyer belt and screening machine are closed, screening
Oversize returns to returning charge storehouse as back-mixing material afterwards, and screenings is fermented product, and fermented product prepares final rare earth sludge through being granulated
Organic fertilizer.
Further, the moisture content 80% of the municipal sludge in step 1, the peanut shell fineness of crushing are 2cm hereinafter, moisture content
15%.
Further, in step 3, the ingredient of the rare earth Organic sludge manure are as follows: organic matter (drying base) 52.2%, total nitrogen+
Total phosphorus+total potassium is greater than 5%, and excrement colibacillus group is less than 3MPN/g, induced worm egg death rate 100%.Heavy metal Cd, Pb, Cu, Zn, Cr
Content is lower than national agricultural standards GB 4284-84, GB 8173-87；
Further, in step 1, including at least 2 kinds in lanthanum La, cerium Ce, praseodymium Pr, rubidium Nd in the rare earth marine sediment
Or two or more, fertilizer middle rare earth weight accounts for the 0.5%-1.0% of fertilizer total weight.
The invention has the benefit that
1, present invention production rare earth organic fertilizer, component is simple, the content of organic matter, N+P2O5+K2O, that is, total nutrient content
Significantly larger than NY-884-2004 standard set quota, and it has been rich in two or more rare earth elements, make full use of having in raw material
The substances such as machine matter and nitrogen, phosphorus, potassium, product have improvement soil, build up fertility, improve root system of plant micro-ecological environment and improve and make
Article matter is increased production, is increased income and other effects, and agricultural products can be made to reach green organic products index request；
2, manufacture craft is very simple, need to only blend raw material, one-step fermentation, re-dry granulation, function can be produced
Energy organic fertilizer, is not necessarily to special producing equipment, and processing method is very easy.
3, the addition of rare earth marine sediment promotes the ferment effect of sludge, improves fermentation efficiency.
3, the secondary pollution for solving the problems, such as municipal sludge, to the nutritional benefit ingredient and microelement resource in municipal sludge
It can make full use of.
4, fermentation time is reduced.Compared with the fermentation of conventional sludge aerobic, the one time fermentation time of the invention shortens 3-4 days,
Fermentation stage cost 12% or so can be saved.
5, increase Soil Nitrogen, phosphorus absorption efficiency, while reducing the residue problem of fertilizer and pesticide, soil ecology can also be carried out
It repairs, reduces agricultural soil pollution of area source problem.
Specific embodiment
Technical solution of the present invention is described in more detail With reference to embodiment.
By nearly 3 years a large number of experiments, the rare earth organic fertilizer after preparation can increase folium artemisiae argyi chlorophyll and contain as green fertilizer
15-25% is measured, folium artemisiae argyi yield increases 15-20%.
The fertilizer is applied to dendriform China rose test, the results showed that, compared with the Chinese rose for not applying the fertilizer, increase dendriform China rose
Chlorophyll content 15-18%, longer blooming period 5-10 days, florescence anti-rainwater ability enhancing, the fall foliage phase postponed 8-15 days.The production
Product are suitable for greening and ornamencal flower and tree and industrial crops；And fruit seedling initial stage cultivates and uses；Increase nitrogen, phosphorus absorption efficiency, together
When reduce the residue problem of fertilizer and pesticide, can also carry out soil ecology reparation, reduce soil pollution of area source problem.
The foregoing is only a preferred embodiment of the present invention, the scope of protection of the present invention is not limited to this, it is any ripe
Know those skilled in the art within the technical scope of the present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are fallen within the protection scope of the present invention.
Claims (4)
1. a kind of preparation method of municipal sludge rare earth organic fertilizer, which comprises the following steps:
Step 1 mixes the peanut shell and rare earth marine sediment of municipal sludge and crushing by weight 50: 49: 1, makes to mix
The moisture content of sludge is 60% afterwards, and carbon-nitrogen ratio C/N is 20: 1；
Material is transported on loading machine by belt conveyor dress after step 2, mixing, and loading machine is transported to fermentation in fermentation tank；Object
Material is from fermentation tank front toward rear portion heap into until groove body is covered with；Draft type, using two Lateral supplies, while by being located at fermentation
The aerating system in orlop portion is supplied oxygen and is divulged information to heap body in such a way that negative pressure is taken out, and mixed material is maintained to fill in oxygen content
Foot, oxygen-supplying amount value range 0.05-0.2m3/m3.min, temperature state appropriate carries out aerobic fermentation, entire fermentation process experience 3
A stage, temperature rise period, hot stage and cold stage；Wherein, temperature rise period, sludge body rise to 45 from environment temperature
DEG C, major microorganisms decompose substrate based on carbohydrate and starch based on mesophilic property microorganism；Hot stage rises to 65-70 DEG C,
Complicated organic matter starts to decompose, and parasitic ovum and pathogenic microorganism can be killed；Temperature-fall period, hot stage drop to low temperature rank
Section, makes organic matter tend towards stability, this stage oxygen demand greatly reduces, and carries out aerobic fermentation；Fermentation time is 20 days, completes fermentation
Process；
Step 3, fermentation, it is decomposed after material screening machine is delivered to by conveyer belt, conveyer belt and screening machine are closed, sieve after screening
Upper object returns to returning charge storehouse as back-mixing material, and screenings is fermented product, and fermented product is granulated, and to prepare final rare earth sludge organic
Fertilizer.
2. the preparation method of municipal sludge rare earth organic fertilizer according to claim 1, which is characterized in that the city in step 1
The moisture content 80% of city's sludge, the peanut shell fineness of crushing are 2cm hereinafter, moisture content 15%.
3. the preparation method of municipal sludge rare earth organic fertilizer according to claim 1, which is characterized in that described in step 3
The ingredient of rare earth Organic sludge manure are as follows: organic matter 52.2%, total nitrogen+total phosphorus+total potassium are greater than 5%, and excrement colibacillus group is less than 3MPN/
G, induced worm egg death rate 100%；Heavy metal Cd, Pb, Cu, Zn, Cr content are lower than national agricultural standards GB 4284-84, GB
8173-87。
4. the preparation method of municipal sludge rare earth organic fertilizer according to claim 1, which is characterized in that described in step 1
Included at least in rare earth marine sediment lanthanum La, cerium Ce, praseodymium Pr, 2 kinds in rubidium Nd or two or more, rare-earth oxidation in fertilizer
Object weight accounts for the 0.5%-1.0% of fertilizer total weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867376.0A CN108947728A (en) | 2018-07-27 | 2018-07-27 | A kind of preparation method of municipal sludge rare earth organic fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867376.0A CN108947728A (en) | 2018-07-27 | 2018-07-27 | A kind of preparation method of municipal sludge rare earth organic fertilizer |
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| CN108947728A true CN108947728A (en) | 2018-12-07 |
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| CN201810867376.0A Pending CN108947728A (en) | 2018-07-27 | 2018-07-27 | A kind of preparation method of municipal sludge rare earth organic fertilizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384484A (en) * | 2018-12-26 | 2019-02-26 | 北京瑞昊肥业有限公司 | Low-energy-consumption high-efficiency farm fermentation cabin |
| CN112624816A (en) * | 2021-01-08 | 2021-04-09 | 贵州明威环保技术有限公司 | Method for producing organic fertilizer by using waste bacterium rods |
| CN112794741A (en) * | 2021-01-08 | 2021-05-14 | 贵州明威环保技术有限公司 | Method for producing organic fertilizer by using vegetable wastes |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2018
- 2018-07-27 CN CN201810867376.0A patent/CN108947728A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 张扬珠主编: "《肥料使用技术》", 31 May 2018, 湖南科学技术出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384484A (en) * | 2018-12-26 | 2019-02-26 | 北京瑞昊肥业有限公司 | Low-energy-consumption high-efficiency farm fermentation cabin |
| CN112624816A (en) * | 2021-01-08 | 2021-04-09 | 贵州明威环保技术有限公司 | Method for producing organic fertilizer by using waste bacterium rods |
| CN112794741A (en) * | 2021-01-08 | 2021-05-14 | 贵州明威环保技术有限公司 | Method for producing organic fertilizer by using vegetable wastes |
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