CN101836576B - Method for manufacturing compost by using biological sludge and steel slag - Google Patents
Method for manufacturing compost by using biological sludge and steel slag Download PDFInfo
- Publication number
- CN101836576B CN101836576B CN2010101714161A CN201010171416A CN101836576B CN 101836576 B CN101836576 B CN 101836576B CN 2010101714161 A CN2010101714161 A CN 2010101714161A CN 201010171416 A CN201010171416 A CN 201010171416A CN 101836576 B CN101836576 B CN 101836576B
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- sludge
- mud
- slag powder
- steel
- compost
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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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- Treatment Of Sludge (AREA)
Abstract
The invention provides a method for manufacturing compost by using biological sludge and steel slag. The technical scheme comprises the following processing steps of: 1, performing mechanical dehydration on the biological sludge to make the water content of the sludge between 60 and 80 percent; 2, piling the dehydrated sludge, mixing a steel slag powder which accounts for 15 to 30 volume percent of the sludge piled body while piling, and inserting a vent pipe into the piled body, wherein the volume of the piled body is between 4 to 10 cubic meters; 3, supplying air to the sludge piled body through the vent pipe to increase oxygen to ferment the sludge, raising the temperature to between 50 and 70 DEG C after the sludge piled body is fermented for 2 to 3 days, continuously fermenting the sludge for 4 to 5 days, reducing the air supply volume along with the reduction of the temperature of the sludge piled body, stopping supplying the air until the temperature of the sludge piled body is reduced to room temperature and naturally standing the sludge for 5 to 7 days to obtain fermented sludge; 4, crushing the steel slag, sieving the crushed steel slag powder, and collecting the steel slag power with the granularity of 100 to 200 meshes for later use; and 5, mixing the fermented sludge and the steel slag powder with the granularity of 100 to 200 meshes in a volume ratio to obtain different composts.
Description
Technical field
What the present invention relates to is a kind of method of making the flowers and trees plant growing with soil, especially a kind of method of making compost with biological sludge and slag.
Background technology
At present, compost matrix commonly used is peat soil and humus soil, this is two kinds of non-renewable resources, storage is limited and originate inadequate, and to its a large amount of exploitations, then can cause ecological environment problem in various degree, yet still not have a kind of method of making compost effectively so far, this is the existing in prior technology weak point.
Summary of the invention
Purpose of the present invention is exactly at the existing in prior technology deficiency, and the method and technology scheme that provides a kind of usefulness biological sludge and slag to make compost, the biological sludge that obtains after this scheme employing waste water treatment and the discarded object slag of steel industry are as raw material, come the processing and fabricating compost, make the discarded object of contaminated environment, become the compost of favourable flowers and trees growth.
This programme is realized by following technical measures: the processing step characteristics of the described method of this programme are as follows:
One. get the biological sludge that obtains after the waste water treatment through mechanical dehydration, the moisture content that makes mud is between 60-80%;
Two. the mud after will dewatering is piled up, and the heap body volume of accumulation is between the 4-10 cubic meter, and mixing sludge is piled the steel-making slag powder of body volume 15-30% when piling up, and inserts ventilation duct in the heap body;
Three. make sludge fermentation through ventilation duct air-supply oxygenation in mud heap body, pile the body fermentation calefaction to 50-70 ℃ through 2-3 days mud, continue fermentation after 4-5 days, then, along with the reduction of mud heap temperature, reduce air output, reduce to room temperature up to the mud heap temperature, out-of-blast, last placement naturally 5-7 days obtains the mud that ferments;
Four. slag pulverize, the sieve steel-making slag powder of collecting 100-200 order granularity is standby;
Five. with mud and the granularity that ferments is that 100-200 purpose steel-making slag powder is mixed by volume and promptly made different composts.
The concrete characteristics of this programme also have, and the steel-making slag powder of the described mud heap of step 2 body volume 15-30% is that granularity is a 50-100 purpose steel-making slag powder.Described ventilation by ventilation duct air-supply oxygenation is 30-50 cubic meter per hour.Described compost is loose compost, and wherein mud accounts for 45-55%, and the steel-making slag powder total amount accounts for 45-55%.Described compost is neutral compost, and wherein mud accounts for 65-75%, and the steel-making slag powder total amount accounts for 25-35%.Described compost is the stickiness compost, and wherein mud accounts for 75-85%, and the steel-making slag powder total amount accounts for 15-25%.
The beneficial effect of this programme can be learnt according to the narration to such scheme, because the biological sludge that has adopted the waste water treatment generation in this scheme is as one of raw material, in biological sludge, be rich in organic matter and humus, and nutriment composition such as the necessary nitrogen of plant growing, phosphorus, potassium, mud fully becomes thoroughly decomposed through fermenting again, pathogen harmful in the mud and parasitic ovum etc. are killed reach innoxious, simultaneously organic carbon is converted into the higher humus of stability.Another raw material of this programme is the discarded object slag of steel industry, and slag is a kind of necessary trace elements of plant growing such as calcium, silicon, aluminium, iron, magnesium and potassium that contain, and has stronger adsorption capacity and loose physical arrangement simultaneously again.Mud that will fully become thoroughly decomposed through fermenting and the slag that is ground into powder mix, and have just made that cost is low, soil property is loose, nutriment is abundant, water retention property is good and the simple compost of preparation technology.This shows that the present invention compared with prior art has outstanding substantive distinguishing features and obvious improvement, the beneficial effect of its enforcement also is conspicuous.
Embodiment:
For clearly demonstrating the technical characterstic of this programme,, this programme is set forth below by three embodiments.
First embodiment: with the method that biological sludge and slag are made compost, its processing step is as follows:
One. get the biological sludge that obtains after the waste water treatment through mechanical dehydration, the moisture content that makes mud is 60%;
Two. mud after will dewatering is piled up, and the heap body volume of accumulation is at 4 cubic metres, when piling up mixing sludge heap body volume 20% granularity be 50-100 purpose steel-making slag powder as alkaline conditioner and swelling agent, and in the heap body, insert ventilation duct;
Three. make sludge fermentation through ventilation duct air-supply oxygenation in mud heap body, the ventilation of oxygenation is per hour 30 cubic metres, to 55-60 ℃, continue fermentation after 4 days, then through 2 days mud heap body fermentation calefactions, reduction along with the mud heap temperature, reduce air output, reduce to room temperature up to the mud heap temperature, out-of-blast, last placement naturally 5 days obtains the mud that ferments;
Four. slag pulverize, the sieve steel-making slag powder of collecting 100-200 order granularity is standby;
Five. with mud and the granularity that ferments is that 100-200 purpose steel-making slag powder is mixed by volume, and wherein mud accounts for 50%, and the steel-making slag powder total amount accounts for 50% and promptly makes loose compost, and the matrix that can be used as the lawn is with native.
Second embodiment: with the method that biological sludge and slag are made compost, its processing step is as follows:
One. get the biological sludge that obtains after the waste water treatment through mechanical dehydration, the moisture content that makes mud is 70%;
Two. mud after will dewatering is piled up, and the heap body volume of accumulation is at 6 cubic metres, when piling up mixing sludge heap body volume 20% granularity be 50-100 purpose steel-making slag powder as alkaline conditioner and swelling agent, and in the heap body, insert ventilation duct;
Three. make sludge fermentation through ventilation duct air-supply oxygenation in mud heap body, the ventilation of oxygenation is per hour 40 cubic metres, to 50-60 ℃, continue fermentation after 5 days, then through 2 days mud heap body fermentation calefactions, reduction along with the mud heap temperature, reduce air output, reduce to room temperature up to the mud heap temperature, out-of-blast, last placement naturally 6 days obtains the mud that ferments;
Four. slag pulverize, the sieve steel-making slag powder of collecting 100-200 order granularity is standby;
Five. with mud and the granularity that ferments is that 100-200 purpose steel-making slag powder is mixed by volume, and wherein mud accounts for 70%, and the steel-making slag powder total amount accounts for 30% and promptly makes neutral compost, can be used as potted plant with soil.
The 3rd embodiment: with the method that biological sludge and slag are made compost, its processing step is as follows:
One. get the biological sludge that obtains after the waste water treatment through mechanical dehydration, the moisture content that makes mud is 60%;
Two. mud after will dewatering is piled up, and the heap body volume of accumulation is at 10 cubic metres, when piling up mixing sludge heap body volume 15% granularity be 50-100 purpose steel-making slag powder as alkaline conditioner and swelling agent, and in the heap body, insert ventilation duct;
Three. make sludge fermentation through ventilation duct air-supply oxygenation in mud heap body, the ventilation of oxygenation is per hour 50 cubic metres, to 60-70 ℃, continue fermentation after 5 days, then through 3 days mud heap body fermentation calefactions, reduction along with the mud heap temperature, reduce air output, reduce to room temperature up to the mud heap temperature, out-of-blast, last placement naturally 7 days obtains the mud that ferments;
Four. slag pulverize, the sieve steel-making slag powder of collecting 100-200 order granularity is standby;
Five. with mud and the granularity that ferments is that 100-200 purpose steel-making slag powder is mixed by volume, and wherein mud accounts for 80%, and the steel-making slag powder total amount accounts for 20% and promptly makes the stickiness compost, can be used as roadside greening with native.
The present invention is not limited in above-mentioned embodiment, and the variation that those of ordinary skills make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (6)
1. method of making compost with biological sludge and slag, it is characterized in that: the processing step of described method is as follows:
One. get the biological sludge that obtains after the waste water treatment through mechanical dehydration, the moisture content that makes mud is between 60-80%;
Two. the mud after will dewatering is piled up, and the heap body volume of accumulation is between the 4-10 cubic meter, and mixing sludge is piled the steel-making slag powder of body volume 15-30% when piling up, and inserts ventilation duct in the heap body;
Three. make sludge fermentation through ventilation duct air-supply oxygenation in mud heap body, pile the body fermentation calefaction to 50-70 ℃ through 2-3 days mud, continue fermentation after 4-5 days, then, along with the reduction of mud heap temperature, reduce air output, reduce to room temperature up to the mud heap temperature, out-of-blast, last placement naturally 5-7 days obtains the mud that ferments;
Four. slag pulverize, the sieve steel-making slag powder of collecting 100-200 order granularity is standby;
Five. with mud and the granularity that ferments is that 100-200 purpose steel-making slag powder is mixed by volume and promptly made different composts.
2. method according to claim 1 is characterized in that: the steel-making slag powder of the described mud heap of step 2 body volume 15-30% is that granularity is a 50-100 purpose steel-making slag powder.
3. method according to claim 1 is characterized in that: described ventilation by ventilation duct air-supply oxygenation is 30-50 cubic meter per hour.
4. method according to claim 1 is characterized in that: described compost is loose compost, and wherein mud accounts for 45-55%, and the steel-making slag powder total amount accounts for 45-55%.
5. method according to claim 1 is characterized in that: described compost is neutral compost, and wherein mud accounts for 65-75%, and the steel-making slag powder total amount accounts for 25-35%.
6. method according to claim 1 is characterized in that: described compost is the stickiness compost, and wherein mud accounts for 75-85%, and the steel-making slag powder total amount accounts for 15-25%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101714161A CN101836576B (en) | 2010-05-13 | 2010-05-13 | Method for manufacturing compost by using biological sludge and steel slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101714161A CN101836576B (en) | 2010-05-13 | 2010-05-13 | Method for manufacturing compost by using biological sludge and steel slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101836576A CN101836576A (en) | 2010-09-22 |
| CN101836576B true CN101836576B (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101714161A Expired - Fee Related CN101836576B (en) | 2010-05-13 | 2010-05-13 | Method for manufacturing compost by using biological sludge and steel slag |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105777383A (en) * | 2016-04-15 | 2016-07-20 | 李玉新 | Technology for producing flower fertilizer by means of metallurgical slag |
| CN110283024A (en) * | 2019-05-31 | 2019-09-27 | 泉州师范学院 | The method that industrial residue is coupled to low ferro-aluminum Treatment of Sludge in waterworks |
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| CN101836576A (en) | 2010-09-22 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20160513 |