CN106831025A - The method that the sludge of sewage treatment plant makes fertilizer - Google Patents
The method that the sludge of sewage treatment plant makes fertilizer Download PDFInfo
- Publication number
- CN106831025A CN106831025A CN201710239008.7A CN201710239008A CN106831025A CN 106831025 A CN106831025 A CN 106831025A CN 201710239008 A CN201710239008 A CN 201710239008A CN 106831025 A CN106831025 A CN 106831025A
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- China
- Prior art keywords
- sludge
- earthworm
- sewage treatment
- treatment plant
- delivered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C05F17/05—Treatments involving invertebrates, e.g. worms, flies or maggots
-
- 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
- C05F17/40—Treatment of liquids or slurries
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Insects & Arthropods (AREA)
- Tropical Medicine & Parasitology (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to the method that a kind of sludge of sewage treatment plant makes fertilizer, comprise the following steps：1) sludge of sewage treatment plant is passed through into Ultrasonic Radiation 30 90 minutes, the acoustic density of ultrasonic wave is 0.5w/mL 3w/mL；2）Sludge after Ultrasonic Radiation and wood chip are pressed 10:1 volume ratio is mixed；3）Mixed Sludge Surface is delivered into earthworm, wherein the quantity that earthworm is delivered in every cubic metre of sludge is 3,000 6000, is kept for 3 15 days；4）It is 40 50% the sludge that dealing with earthworm is crossed to be dried to moisture content；5）Sludge after drying is sieved, the impurity of bulky grain is removed.The method obtains organic fertilizer after being processed using the sludge after city domestic sewage treatment.
Description
Technical field
The present invention relates to the method that a kind of sludge of sewage treatment plant makes fertilizer, belong to technical field of sewage.
Background technology
With rapid urbanization, treatment rate of domestic sewage is improved year by year, and the sludge yield after municipal sewage treatment is also drastically
Increase, a large amount of harmful substances and cause of disease mattress are not only contained in sludge, and the nutrition enriched containing nitrogen, phosphorus, potassium and organic matter etc.
Material.
Moisture content refers to that the quality of contained humidity in sludge accounts for the percentage of sludge gross mass.Moisture content is of sludge
Important physical property, moisture content is higher, and the volume that it is accounted for is bigger, is more unfavorable for conveying and processes, and moisture content is lower, what it was accounted for
Volume is smaller, is advantageous for conveying and processes.Sludge more than 90%, is unfavorable for sludge by after concentration, water content is still very high
Conveying and treatment.By that after concentration, should be dehydrated to it, dewatering type typically now is de- with belt filter press to sludge
Water, the sludge moisture content after dehydration is generally 75%-85%.And sludge silt is because wherein containing the harmful substances such as heavy metal, now
Various regions government forbids to fill on the spot, though useful chemical method dehydration fed to boiler is burned or disposed by cement plant, its amount of clearing up is remote
Yield can not be met.Traditional specific resistance to filtration cost of technology is high, typically constitutes the 50- of the total running cost of sewage disposal
60% or so, high specific resistance to filtration expense brings huge economic pressures to sewage treatment plant.
The moisture for being full of more than 80% in the sludge of domestic sewage factory is the also difficult crystalloid water for evaporating of exposure in the sun
Body, even if being exposed to the sun can only also dissipate a small amount of crystalloid water body, and the moisture content required energy high for reducing domestic sewage factory sludge
Source is very big with the input of fund, and secondary pollution is also inevitable.Therefore, how to reducing the moisture content in sludge, so as to
The follow-up disposal that reasonable environmental protection is carried out to sludge and recycling dragon are important.
The content of the invention
The invention solves the problems that technical problem is：Overcome the shortcoming of above-mentioned technology, there is provided one kind is made full use of at sanitary sewage
The method that sludge after reason makes fertilizer.
In order to solve the above-mentioned technical problem, technical scheme proposed by the present invention is：A kind of sludge of sewage treatment plant makes
The method of fertilizer, comprises the following steps：
1) by the sludge of sewage treatment plant by Ultrasonic Radiation 30-90 minutes, the acoustic density of ultrasonic wave is 0.5w/mL-3w/
mL；
2）Sludge after Ultrasonic Radiation and wood chip are pressed 10:1 volume ratio is mixed；
3）Mixed Sludge Surface is delivered into earthworm, wherein the quantity that earthworm is delivered in every cubic metre of sludge is 3000-6000
Bar, is kept for 3-15 days；
4）It is 40-50% the sludge that dealing with earthworm is crossed to be dried to moisture content；
5）Sludge after drying is sieved, the impurity of bulky grain is removed.
Signified sludge is Sludge from primary sedimentation tank and second pond sludge for producing in sewage disposal process etc. in the present invention, that is,
Remaining solid portion after sewage disposal.Containing nutrient for plants nitrogen, phosphorus, potassium and organic matter and moisture etc. in sludge, also contain
Substantial amounts of poisonous and harmful substance, such as pathogenic microorganism, bacterium, parasitic ovum, synthesis of organic substance.
Ultrasonic wave can kill the bacterium in sludge, eliminate virus, the material for producing foul smell be decomposed, so as to eliminate foul smell
Root, kills algae, eliminates suspension, improves the resolvability of COD, can effectively prevent the propagation of pathogen.Ultrasonic wave
Effect crushes cell membrane, discharges intracellular organic matter, and intracellular organic matter supplies growth of microorganism as self-produced substrate, improves it to having
The decomposition absorbability of machine thing, accelerates the process that organic matter enters cell and metabolite discharge cell, so that sludge methane
Yield rises.Ultrasonic wave kills the bacterium in sludge and decomposes solids, so that sludge is easier to be dehydrated and discharge enzyme, reduces
The moisture content of sludge.
The present invention is typically chosen strong adaptability, better tolerance, breeding is rapid, feeding habits are miscellaneous, be easy to the earthworm raised as dirt
The earthworm kind of mud treatment, preferably Eisenia Foetida or " peaceful No. two " earthworm process sludge.Wood chip has very strong moisture pick-up properties
With than more loose structure, the porosity of abundance can be provided in the sludge that wood chip is mixed into for sludge, facilitate earthworm in dirt
Climbing is looked for food up and down in mud, improves the water-permeable and air permeable performance of sludge, and improves microbiologic population's activity and quantity.
Because containing substantial amounts of crystalloid water body, water content still reaches more than 75% to sludge after sewage treatment plant's treatment,
And be inconvenient to transport and subsequent applications.The present invention is destroyed crystalloid water body by looking for food by delivering earthworm, such earthworm, and one
The Comparison of Gardening Activities that aspect earthworm takes food frequently, promotes the formation of soil macropore and the up/down perforation of hole, causes infiltration system
Several raisings.In addition, earthworm is in the vital movement such as swallowing, dig a hole and being metabolized, improve microbiologic population's activity and quantity, favorably
Decomposition is converted under the conditions of oxygen concentration is relatively low in organic matter, the chemical behavior to Heavy Metals in Sludge produces direct or indirect shadow
Ring, its foraging activity can also remove some heavy metals in sludge, so that the excrement of earthworm turns into good fertilizer, this is to by dirt
It is also significant that mud directly applies to agricultural fertilising.
Preferably, step 3）Middle earthworm is using Eisenia Foetida or " peaceful No. two " earthworm.
Specific embodiment
Embodiment
The method that a kind of sludge of sewage treatment plant of the present embodiment makes fertilizer, comprises the following steps：
1) by the sludge of sewage treatment plant by Ultrasonic Radiation 30-90 minutes, the acoustic density of ultrasonic wave is 0.5w/mL-3w/
mL；
2）Sludge after Ultrasonic Radiation and wood chip are pressed 10:1 volume ratio is mixed；
3）Mixed Sludge Surface is delivered into earthworm, wherein the quantity that earthworm is delivered in every cubic metre of sludge is 3000-6000
Bar, is kept for 3-15 days；The preferred Eisenia Foetida of earthworm or " peaceful No. two " earthworm.
4）The sludge that dealing with earthworm is crossed is dried to moisture content in 40-50%；
5）Sludge after drying is sieved, the impurity of bulky grain is removed.
The present invention is not limited to the concrete technical scheme described in above-described embodiment, and in addition to the implementation, the present invention may be used also
To there is other embodiment.The technical scheme that all use equivalents are formed, is the protection domain of application claims.
Claims (2)
1. the method that a kind of sludge of sewage treatment plant makes fertilizer, comprises the following steps：
1) by the sludge of sewage treatment plant by Ultrasonic Radiation 30-90 minutes, the acoustic density of ultrasonic wave is 0.5w/mL-3w/
mL；
2）Sludge after Ultrasonic Radiation and wood chip are pressed 10:1 volume ratio is mixed；
3）Mixed Sludge Surface is delivered into earthworm, wherein the quantity that earthworm is delivered in every cubic metre of sludge is 3000-6000
Bar, is kept for 3-15 days；
4）It is 40-50% the sludge that dealing with earthworm is crossed to be dried to moisture content；
5）Sludge after drying is sieved, the impurity of bulky grain is removed.
2. the method that the sludge of sewage treatment plant according to claim 1 makes fertilizer, it is characterised in that：Step 2）Middle earthworm
Earthworm is using Eisenia Foetida or " peaceful No. two " earthworm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611157057 | 2016-12-15 | ||
| CN2016111570578 | 2016-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106831025A true CN106831025A (en) | 2017-06-13 |
Family
ID=59147754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710239008.7A Pending CN106831025A (en) | 2016-12-15 | 2017-04-13 | The method that the sludge of sewage treatment plant makes fertilizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809843A (en) * | 2019-03-30 | 2019-05-28 | 安徽科技学院 | The method for preparing biological organic fertilizer using sludge |
| CN109896715A (en) * | 2019-03-30 | 2019-06-18 | 安徽科技学院 | A method of utilizing earthworm continuous processing sludge |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2705098A1 (en) * | 1977-02-08 | 1978-08-10 | Wolfgang Prof Dr Ing Baader | METHOD FOR TREATMENT OF ANIMAL EXCREMENTS AND SLEUCY |
| CN101857346A (en) * | 2010-05-24 | 2010-10-13 | 北京龙威昌生物科技有限公司 | Biological processing technology of earthworms contained in municipal sludge |
-
2017
- 2017-04-13 CN CN201710239008.7A patent/CN106831025A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2705098A1 (en) * | 1977-02-08 | 1978-08-10 | Wolfgang Prof Dr Ing Baader | METHOD FOR TREATMENT OF ANIMAL EXCREMENTS AND SLEUCY |
| CN101857346A (en) * | 2010-05-24 | 2010-10-13 | 北京龙威昌生物科技有限公司 | Biological processing technology of earthworms contained in municipal sludge |
Non-Patent Citations (1)
| Title |
|---|
| 张光明等: "《超声波水处理技术》", 30 September 2006, 中国建筑工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809843A (en) * | 2019-03-30 | 2019-05-28 | 安徽科技学院 | The method for preparing biological organic fertilizer using sludge |
| CN109896715A (en) * | 2019-03-30 | 2019-06-18 | 安徽科技学院 | A method of utilizing earthworm continuous processing sludge |
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Application publication date: 20170613 |