CN101698619A - Method for preparing organic fertilizer with dredging sludge - Google Patents
Method for preparing organic fertilizer with dredging sludge Download PDFInfo
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- CN101698619A CN101698619A CN200910213176A CN200910213176A CN101698619A CN 101698619 A CN101698619 A CN 101698619A CN 200910213176 A CN200910213176 A CN 200910213176A CN 200910213176 A CN200910213176 A CN 200910213176A CN 101698619 A CN101698619 A CN 101698619A
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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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Abstract
The invention relates to a method for preparing organic fertilizer with dredging sludge, which comprises the steps of: evenly stirring sludge, rice hull and pig manure, mixing and piling; keeping the temperature of the outer layer of compost with saw dust; starting a ventilation pipe so that the compost is ventilated; after the compost enters into a high-temperature fermentation stage, piling every 5-7days; evenly stirring the compost; closing the ventilation pipe after 25-28 days; and naturally ventilating the compost to prepare the organic fertilizer. The organic fertilizer prepared by the method has the pH value of 6.9-7.43, the death rate of ascarid egg of 96-98%, the coliform value of 10-1-10-2, the total cadmium value of 0.7mg/kg, the total mercury value of 0.03-0.07mg/kg, the total lead value of 5-7mg/kg, the total cadmium value of 0.7-6-0.87mg/kg, the total arsenic value of 7.3-8.1mg/kg and the germination index of 70-75%, and has no phytotoxicity.
Description
Technical field
The present invention relates to a kind of production method of producing fertilizer, relate in particular to a kind of method of utilizing dredging silt to prepare fertilizer.
Background technology
Contain animals and plants nutritive ingredients such as a large amount of organic matters, nitrogen, phosphorus in the mud, organic content 6%～9% is a kind of waste resource that has utility value.At present, China increases day by day for the dredging silt amount that improvement waters water quality worsens the dredging desilting engineering generation of taking.For example, Shanghai only Suzhou River administer and just to need several 100,000 m of dredging silt
3, the total amount of accumulating of Taihu Lake mud is 19.12 hundred million m
3Because it is big that dredging silt has the mud amount, water ratio is higher, and the moiety complexity is easy to generate secondary pollution, will cause totally unfavorable influence to environment as if mishandling, thereby the processing of dredging silt has just been become people's question of common concern with disposing.
The disposal options of dredging silt routine mainly contains stacking, and methods such as mud are thrown in hydraulic reclamation and ocean, and these methods of disposal have also been brought various problems when having solved the mud problem of outlet.Simple stack and do not take other measure of control, can take a large amount of soils on the one hand, can produce secondary pollution again owing to rainwash on the other hand, and wherein beneficiating ingredient can not be fully used, cause the waste of resource.The greatest problem that hydraulic reclamation is handled is exactly the hydraulic reclamation problems of land utilization, and hydraulic fill foundation is generally very weak, needs the ground processing costs of both expensive when later development uses.In addition, dredge fill muddy water often occurs to the outside diffusion in cofferdam, causes secondary pollution.The ocean is thrown mud and can directly be caused the fishing ground to destroy, and ocean environment is produced direct greatly and potential impact, and a lot of countries have made laws and forbidden.Compare with other technologies, the mud compost has unique advantage, and as cost saving, do not destroy original ecology, detersive efficiency height, reduce the stockyard and save the area, alleviate secondary pollution etc., its most critical still is that resource obtains development and utilization.
Utilizing mud to be made into fertilizer improves the soil, as publication number is CN1262242A a kind of " process for treating sludge ", publication number is a kind of " production line for preparing compound fertilizer from sludge " of CN1393427A, publication number is a kind of " dirty mud transfers the method for fertilizer to " of CN1562904A, and publication number is " a kind of process for treating sludge " of CN101081716A.These methods all are directly to mix with auxiliary material with mud, and high temperature discharging immediately after stirring needs to consume a large amount of energy, and without crossing thermophilic fermentation, its safe utilization problem causes anxiety.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide that a kind of pH value is fit to most of farm crop, induced worm egg death rate height, colibacillus content is few, germination index is high, the dredging silt that utilizes of plant-less toxicity prepares the method for fertilizer.
According to technical scheme provided by the invention, the described method of utilizing dredging silt to prepare fertilizer comprises the steps:
Described method comprises the steps:
A, press 4 parts in mud, 1～2 part of agricultural wastes, 1～2 part of wood chip and pig manure is prepared raw material for 1～2 part, unit is a parts by volume; After mud, rice husk and pig manure stirred, form mixture, described mixture composting on the platform that is equipped with ventilator trunk, is formed windrow; The water ratio of control windrow is 60%～70%, spreads insulation at the outside surface of described windrow with wood chip, forms compost;
Behind b, the formation compost, start ventilator trunk, to the compost bubbling air, the ventilation of ventilator trunk is controlled at every cubic metre of windrow per minute and feeds 0.05～0.2m
3Air, the per 2～3h of ventilator trunk starts once, each ventilation time is 30～40min;
After c, the compost ventilation, make compost enter the thermophilic fermentation stage; In this stage, every turning in 5～7 days once, compost is stirred, close ventilator trunk after 25～28 days, allow the compost natural ventilation, promptly make fertilizer.
Described agricultural wastes are the combination of one or more materials in rice husk, wheat husk or the useless mushroom slag.
The profile of described compost is isosceles trapezoid, and the heap bottom width is 2.5～3.0 meters, and the heap top width is 1～1.5 meter, and the heap height is 1.2～1.5 meters.
The fertilizer pH value that makes by method of the present invention is 6.9～7.43, and induced worm egg death rate is 96%～98%, and colititre is 10
-1～10
-2, total cadmium value is 0.7mg/kg, and the total mercury value is 0.03～0.07mg/kg, and total plumbous value is 5～7mg/kg, and total cadmium value is 0.76～0.87mg/kg, always the arsenic value is 7.3～8.1mg/kg, and this fertilizer germination index is 70%～75%, i.e. plant-less toxicity.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1
The basic physical and chemical of mud, rice husk, pig manure and wood chip sees the following form:
(1) compound preparation: with mummification mud, rice husk, pig manure and wood chip 4: 2: 1 by volume: 1 manually mixes, and measures the raw material water ratio and reaches 68%.Vent-pipe is laid the thick straw of 10cm on the net, and the material that mixes evenly is laid on the ventilator trunk, and the compost profile is trapezoidal, 3 meters of bottom width of heap, and upper surface is wide 1.5 meters, piles highly 1.2 meters, and the compost skin is spread insulation with wood chip.Control ventilation 0.1m
3/ m
3Windrow .min is every 2h ventilation 30min.
(2) compost after 2 days temperature rise to 60 ℃, the pliotherm period kept 8 days, back compost temperature descends gradually, enters the after-ripening stage.Compost was banked up 25 days, measured germination index and reached 70%, showed above-mentioned tunning plant-less toxicity.Product appearance is dark brown, short texture, does not have stench, does not attract mosquitos and flies, the bacterial plaque of the visible more white of compost.Analyze the every index of compost: pH value 7.18, induced worm egg death rate 98%, colititre 10
-1～10
-2, total cadmium 0.4mg/kg, total mercury 0.04mg/kg, total plumbous 5mg/kg, total cadmium 0.87mg/kg, total arsenic 8.1mg/kg.
(3) compost field experiment: the field plot trial mode is adopted in test, and for studying the thing wheat, two processing are established in test, and A is not for there being fertile contrast, and B executes mud compost 38t/hm
2As can be seen from Table 1: treatments B is compared with handling A, and effectively fringe increases by 2.3 ten thousand fringe/mus, and grain number per spike increases by 5.4, thousand seed weight increases 3.9g, per mu yield increases 84.88kg, illustrates and uses the biological character that the mud compost can improve wheat, for wheat increase yield is laid good basis.
Field investigation record of table 1 wheat and output information slip
Embodiment 2
(1) compound preparation: with mummification mud, rice husk, pig manure and wood chip 4: 1: 2 by volume: 1 manually mixes, and measures the raw material water ratio and reaches 60%.Vent-pipe is laid the thick straw of 10cm on the net, and the material that mixes evenly is laid on the ventilator trunk, and the compost profile is trapezoidal, 3 meters of bottom width of heap, and upper surface is wide 1.5 meters, piles highly 1.2 meters, and the compost skin is spread insulation with wood chip.Control ventilation 0.05m
3/ m
3Windrow .min is every 2h ventilation 30min.
(2) fertile heap after 2 days temperature rise to 55 ℃, the pliotherm period kept 10 days, back heap temperature descends gradually, enters the after-ripening stage.Compost was banked up 25 days, measured germination index and reached 75%, showed above-mentioned tunning plant-less toxicity.Product appearance is dark brown, short texture, does not have stench, does not attract mosquitos and flies, the bacterial plaque of the visible more white of compost.Analyze the every index of compost: pH value 6.90, induced worm egg death rate 96%, colititre 10
-1～10
-2, total cadmium 0.5mg/kg, total mercury 0.03mg/kg, total plumbous 7mg/kg, total cadmium 0.82mg/kg, total arsenic 7.3mg/kg.
(3) compost field experiment: the field plot trial mode is adopted in test, and for studying the thing corn, two processing are established in test, specifically see Table 2, and wherein A is not for there being fertile contrast, and B executes mud compost 32t/hm
2As can be seen from Table 2: treatments B is compared with handling A, and spike length increases 4.3cm, and grain number per spike increases by 117.1, thousand seed weight increases 43.3g, per mu yield increases 146.60kg, illustrates and uses the biological character that the mud compost can improve corn, for corn yield increasing is laid good basis.
Field investigation record of table 2 corn and output information slip
Embodiment 3
(1) compound preparation: with mummification mud, rice husk, pig manure and wood chip 4: 1: 1 by volume: 2 manually mix, and measure the raw material water ratio and reach 63%.Vent-pipe is laid the thick straw of 10cm on the net, and the material that mixes evenly is laid on the ventilator trunk, and the compost profile is trapezoidal, 3 meters of bottom width of heap, and upper surface is wide 1.5 meters, piles highly 1.2 meters, and the compost skin is spread insulation with wood chip.Control ventilation 0.1m
3/ m
3Windrow .min is every 2h ventilation 30min.
(2) fertile stack temperature rises to 50 ℃ after 2 days, and the pliotherm period kept 7 days, and back heap temperature descends gradually, enters the after-ripening stage.Compost was banked up 25 days, measured germination index and reached 71%, showed above-mentioned tunning plant-less toxicity.Product appearance is dark brown, short texture, does not have stench, does not attract mosquitos and flies, the bacterial plaque of the visible more white of compost.Analyze the every index of compost: pH value 7.43, induced worm egg death rate 97%, colititre 10
-1～10
-2, total cadmium 0.7mg/kg, total mercury 0.07mg/kg, total plumbous 6.2mg/kg, total cadmium 0.76mg/kg, total arsenic 7.6mg/kg.
(3) compost field experiment: the field plot trial mode is adopted in test, and for studying the thing cucumber, two processing are established in test, and A is not for there being fertile contrast, and B executes mud compost 37t/hm
2As can be seen from Table 3: treatments B is compared with handling A, and female flower of cucumber number, female flower joint rate, bearing pumpkin rate and per mu yield all are significantly increased, and illustrate and use the output that the mud compost can increase cucumber.
The investigation result of table 3 different treatment cucumber birth index and output
Mud and auxiliary material mixed fermentation promptly got short texture, the umbrinaceous compost of outward appearance about one month, and every indexs such as its induced worm egg death rate, colititre, heavy metal meet the fertilizer standard.Mud compost of the present invention is applied to vegetables and field crop, has all obtained tangible effect of increasing production.Show phenomenons such as seedling is strong together, cauline leaf is sturdy, the remarkable increase of morning, bearing pumpkin rate and output raising, grain number per spike and thousand seed weight of blooming.We also do the test of compost application effect on cash crop such as flowers, forest, lawn in addition, have also obtained gratifying result.
Claims (3)
1. a method of utilizing dredging silt to prepare fertilizer is characterized in that, described method comprises the steps:
A, press 4 parts in mud, 1～2 part of agricultural wastes, 1～2 part of wood chip and pig manure is prepared raw material for 1～2 part, unit is a parts by volume; After mud, rice husk and pig manure stirred, form mixture, described mixture composting on the platform that is equipped with ventilator trunk, is formed windrow; The water ratio of control windrow is 60%～70%, spreads insulation at the outside surface of described windrow with wood chip, forms compost;
Behind b, the formation compost, start ventilator trunk, to the compost bubbling air, the ventilation of ventilator trunk is controlled at every cubic metre of windrow per minute and feeds 0.05～0.2m
3Air, the per 2～3h of ventilator trunk starts once, each ventilation time is 30～40min;
After c, the compost ventilation, make compost enter the thermophilic fermentation stage; In this stage, every turning in 5～7 days once, compost is stirred, close ventilator trunk after 25～28 days, allow the compost natural ventilation, promptly make fertilizer.
2. the method for utilizing dredging silt to prepare fertilizer as claimed in claim 1 is characterized in that: described agricultural wastes are the combination of one or more materials in rice husk, wheat husk or the useless mushroom slag.
3. the method for utilizing dredging silt to prepare fertilizer as claimed in claim 1 is characterized in that: the profile of described compost is isosceles trapezoid, and the heap bottom width is 2.5～3.0 meters, and the heap top width is 1～1.5 meter, and the heap height is 1.2～1.5 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910213176A CN101698619A (en) | 2009-10-20 | 2009-10-20 | Method for preparing organic fertilizer with dredging sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910213176A CN101698619A (en) | 2009-10-20 | 2009-10-20 | Method for preparing organic fertilizer with dredging sludge |
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| Publication Number | Publication Date |
|---|---|
| CN101698619A true CN101698619A (en) | 2010-04-28 |
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|---|---|---|---|
| CN200910213176A Pending CN101698619A (en) | 2009-10-20 | 2009-10-20 | Method for preparing organic fertilizer with dredging sludge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399112A (en) * | 2010-09-10 | 2012-04-04 | 潘菊明 | Granulation method of culture substrate for elevated cultivation of strawberries |
| CN102617237A (en) * | 2012-04-05 | 2012-08-01 | 江苏花海农业科技有限公司 | Method for producing ecological environment-friendly nutrition soil by using lake sludge |
| CN103910551A (en) * | 2014-03-26 | 2014-07-09 | 宋苏婷 | Flower culture nutrient medium |
| CN105330355A (en) * | 2015-11-05 | 2016-02-17 | 周美文 | Preparation method of rice seedling raising organic fertilizer for mechanized rice transplanting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192427A (en) * | 1998-04-02 | 1998-09-09 | 毕文芳 | Organic ecology fertilizer |
| CN101372427A (en) * | 2008-09-28 | 2009-02-25 | 李伟光 | Solid waste high temperature aerobic composting method using stereoscopic ventilating apparatus |
-
2009
- 2009-10-20 CN CN200910213176A patent/CN101698619A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192427A (en) * | 1998-04-02 | 1998-09-09 | 毕文芳 | Organic ecology fertilizer |
| CN101372427A (en) * | 2008-09-28 | 2009-02-25 | 李伟光 | Solid waste high temperature aerobic composting method using stereoscopic ventilating apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399112A (en) * | 2010-09-10 | 2012-04-04 | 潘菊明 | Granulation method of culture substrate for elevated cultivation of strawberries |
| CN102399112B (en) * | 2010-09-10 | 2015-08-26 | 潘菊明 | A kind of granulation method of culture substrate for elevated cultivation of strawberries |
| CN102617237A (en) * | 2012-04-05 | 2012-08-01 | 江苏花海农业科技有限公司 | Method for producing ecological environment-friendly nutrition soil by using lake sludge |
| CN102617237B (en) * | 2012-04-05 | 2013-10-09 | 江苏花海农业科技有限公司 | Method for producing ecological environment-friendly nutrition soil by using lake sludge |
| CN103910551A (en) * | 2014-03-26 | 2014-07-09 | 宋苏婷 | Flower culture nutrient medium |
| CN105330355A (en) * | 2015-11-05 | 2016-02-17 | 周美文 | Preparation method of rice seedling raising organic fertilizer for mechanized rice transplanting |
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Application publication date: 20100428 |