CN107363086A - A kind of method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas - Google Patents
A kind of method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas Download PDFInfo
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- CN107363086A CN107363086A CN201710864175.0A CN201710864175A CN107363086A CN 107363086 A CN107363086 A CN 107363086A CN 201710864175 A CN201710864175 A CN 201710864175A CN 107363086 A CN107363086 A CN 107363086A
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- phosphorus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a kind of method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas, comprise the following steps：The higher agricultural land soil of phosphorus content is turned over, ploughed depth is not less than 30cm；Desulfurized gesso of flue gas is uniformly blended into the agricultural land soil surface turned over again, then again soil mix and turned over, depth is no less than 30cm, ensures that desulfurized gesso of flue gas fully mixes with soil, arranges plantation farm-forestry crop afterwards.The phosphorus of high content in effectively fixing soil of the invention, more diffluent soluble state phosphorus is converted into precipitability, not readily dissolve and stable state Phos, reduce Organic phosphate and water-soluble phosphorus content, increase the content of Phos, reduce harnessing soil phosphor loss, the occurrence risk of body eutrophication is reduced, while does not influence growth needs of the farm-forestry crop to phosphorus element.
Description
Technical field
The invention belongs to technical field of environment pollution control, and in particular to one kind reduces farmland richness using desulfurized gesso of flue gas
The method of phosphorus phosphorus levels, this method can substantially reduce agricultural non-point source pollution, reduce body eutrophication Probability, especially
It is the titanium pigment that make use of desulfurized gesso of flue gas to fix in agricultural land soil, and the loss of soil phosphorus has been controlled in resistance.
Background technology
Excessive phosphorus is gradually migrated by approach such as rainwash, the soil erosion, leachings to water body in agricultural soil, is to lead
Cause the major reason of surrounding body eutrophication.The economy East Coastal river network in plain areas the most flourishing in China, agricultural collection
Reduction degree is high, precipitation is frequent, and due to the extensive application of agrochemical, the soil phosphorus content of many Farmlands all significantly rises
Height, and utilization ratio is relatively low, result in that agricultural non-point source pollution is serious, adds agricultural run-off and is lost in wind of the phosphorus to quality of water environment
Danger, river lake eutrophication even have influence on offshore waters.Therefore, if being intended to continue to carry out Agricultural Activities on these soils,
It is necessary that technical research is controlled in dam emission reduction and the resistance of implementing agricultural non-point source pollution, to reduce the loss of phosphorus.
The process that coal-burning power plant removes sulfureous in flue gas using Gypsum Wet technique can produce substantial amounts of industrial waste
Thing --- desulfurized gesso of flue gas (CaSO4·2H2O), earth improvement, mine reclamation and beach saline-alkali are had been widely used in recent years
Ground desalination and reparation.
The content of the invention
The present invention provides a kind of method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas, flue gas desulfurization
Gypsum effectively in fixing soil high content phosphorus, by more diffluent soluble state phosphorus be converted into precipitability, stable state it is inorganic
Phosphorus, Organic phosphate and water-soluble phosphorus content are reduced, increase the content of Phos, reduce harnessing soil phosphor loss, reduce the rich battalion of water body
The occurrence risk of fosterization.
Desulfurized gesso of flue gas has good effect on control farmland phosphorus loss, and its mechanism is mainly：Increase soil permeability
Property, reduce agricultural run-off；Increase confinement capabilities of the soil to phosphorus, reduce the loss of total phosphorus and titanium pigment.Desulfurized gesso of flue gas
Applied to the control of agricultural non -point pollution, can dam emission reduction and pollution water bodies of rivers and lakes improvement for the agricultural pollution of China River Network
The technological means and theoretical method of a kind of economic and reliable are provided, and a kind of new think of is provided for the recycling of trade waste
Road.
Technical scheme is as follows：
A kind of method that rich phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas, is comprised the following steps：
(1) the higher agricultural land soil of phosphorus content is turned over, ploughed depth is not less than 30cm；
(2) desulfurized gesso of flue gas is uniformly blended into the agricultural land soil surface turned over, then again soil mix and turned over, it is deep
Spend no less than 30cm, to ensure that desulfurized gesso of flue gas fully mixes with soil, arranging plantation farm-forestry crop afterwards.
Preferably, described desulfurized gesso of flue gas is coal-burning power plant or the flue gas desulfurization byproduct of other industrial trades.
Preferably, described desulfurized gesso of flue gas needs to determine content of beary metal therein, main weight before administration
Tenor must not be higher than《Standard of soil environment quality》(GB15618-1995) secondary standard.
Preferably, the higher soil of described phosphorus content refers to be higher than this area agricultural area source by detecting soil phosphorus content
The critical value of the phosphorus content of pollution, the soil of body eutrophication can be caused after phosphorus loss in soil to surrounding body.
Preferably, phosphorus content is less than 15g/kg agricultural land soil, and desulfurized gesso of flue gas mixed volume is by farmland unit area
Using gauge：30-45 tons/hectare.
Preferably, phosphorus content is more than 15g/kg agricultural land soil, and desulfurized gesso of flue gas mixed volume is by farmland unit area
Using gauge：45-60 tons/hectare.
Compared with prior art, beneficial effects of the present invention are as follows：
First, the modifying agent that the present invention is controlled using desulfurized gesso of flue gas (FGD Gypsum) as soil phosphorus, Ke Yitong
Cross calcium (Ca2+) phosphorus fixation is acted on, that is, the synthos of slightly solubility are generated, reduce the content of titanium pigment in soil, so as to
Phosphorus is reduced as precipitation etc. is lost to the risk of surrounding body；
2nd, the Ca in the insoluble phosphorus acid calcium salt that the present invention generates2- P is considered as effective phosphorus source of crop, Ca8- P is slow
Imitate phosphorus source, Ca10- P is hardly absorbed by crops, therefore, when plant growth is using needing, effective phosphorus source Ca2- P and slow
Ca8- P, which can also be discharged, meets crop demand, thus the reduction of soil available phosphorus and the increase of Phos can't show
Work has influence on absorption of the plant to phosphorus element；
3rd, the present invention showed in the live demonstration engineering of 3 years, and desulfurized gesso of flue gas is influenceing the same of soil phosphorus change
When, the chemically and physically characteristic of soil can also be changed, the calcium ion and sulphion in desulfurized gesso of flue gas are as nutriment
The growth of field-crop can also be promoted；
4th, the desulfurized gesso of flue gas desalination that the present invention applies has low ecological risk, is not only because desulfurized gesso of flue gas
With low content of beary metal, more nutriment calcium and sulfate radical, as long as and using once, it is possible to obtain obvious
Reduce the effect of harnessing soil phosphor loss.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this hair
It is bright, rather than limit protection scope of the present invention.Those skilled in the art change according to what the present invention made in actual applications
Enter and adjust, still fall within protection scope of the present invention.
Embodiment 1：
The present embodiment is implemented on certain farm of southern flat-bottomed land, uses the flue gas of certain neighbouring large coal-fired power plant to take off
Sulphur gypsum, demonstration project area are 0.2ha, and wherein crop acreage is 0.15ha, and long-term cropping is upland rice variety.Specifically
Operation comprises the following steps：
1) in the winter time, the higher farmland of smooth phosphorus content, and rotary tillage, rotary tillage depth 50cm are carried out to rich phosphorus soil；
2) desulfurized gesso of flue gas is uniformly blended into the agricultural land soil surface turned over, then again soil mix and turned over, it is deep
Spend no less than 30cm, to ensure that desulfurized gesso of flue gas fully mixes with soil.
3) ratio that is mixed into of desulfurized gesso of flue gas is 45-60 tons/hectare；
4) after being mixed into desulfurized gesso of flue gas half a year, upland rice is planted using rice transplantation by hand mode
In the improved, process of above-mentioned rich phosphorus soil, only desulfurized gesso of flue gas need to be once added.The daily irrigation in farmland, apply
The control measures such as fertilizer are consistent with farmland neighboring area.
Compared to the control sample for less adding desulfurized gesso of flue gas, the soil of the present embodiment addition desulfurized gesso of flue gas is effective
Phosphorus declines 50%, and soil inorganic phosphorus content adds 40%, wherein, calcium phosphorus content increase nearly 30%, other physical indexs of soil
Have clear improvement, and the growth and development process of crops and yield are not affected by influence.
Embodiment 2：
The present embodiment is implemented in certain university campus botanical garden, uses the flue gas desulfurization of certain neighbouring large coal-fired power plant
Gypsum, demonstration project area are 200 square metres, and planting plants are Echinacea purpurea.Concrete operations comprise the following steps：
1) the higher soil of smooth phosphorus content, and rich phosphorus soil is turned over, ploughed depth 30cm；
2) desulfurized gesso of flue gas is uniformly blended into the agricultural land soil surface turned over, then again soil mix and turned over, it is deep
Spend no less than 30cm, to ensure that desulfurized gesso of flue gas fully mixes with soil；
3) gutter is excavated on the soil periphery turned over, groove depth 45cm, wide 50cm, the bottom of real tillage set long 3.0m,
Diameter 5.0cm PVC perforated pipes lead to drainage groove, and the percolate of soil is collected during rainfall；
4) ratio that is mixed into of desulfurized gesso of flue gas is 30-45 tons/hectare；
5) after being mixed into desulfurized gesso of flue gas half a year, site preparation is required according to sowing, Echinacea purpurea is planted using artificial trench digging mode,
More than soil deep tillage 25cm.
In the improved, process of above-mentioned rich phosphorus soil, only desulfurized gesso of flue gas need to be once added.After rainfall, collect soil and ooze
Filtrate.
Compared to the control sample for less adding desulfurized gesso of flue gas, after the present embodiment uses 1 year, desulfurized gesso of flue gas is added
Soil available phosphorus decline 20%, titanium pigment have dropped 55% in percolate, and soil inorganic phosphorus content adds 23%, its
In, calcium phosphorus increase nearly 25%, other physical indexs of soil have clear improvement, and Echinacea purpurea growing at seedling stage and florescence
It is not affected by influence.
To sum up, can be obtained by embodiment 1 and embodiment 2：One kind of the present invention is reduced rich using desulfurized gesso of flue gas
The method of phosphorus harnessing soil phosphor loss, containing for titanium pigment in organophosphor and soil solution in rich phosphorus soil can be significantly reduced
Amount, increases the content of less soluble content of inorganic phosphorus, particularly calcium phosphorus, and do not interfere with growing and producing for cultivated plant
Amount.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (6)
- A kind of 1. method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas, it is characterised in that including following Step：(1) the higher agricultural land soil of phosphorus content is turned over, ploughed depth is not less than 30cm；(2) desulfurized gesso of flue gas is uniformly blended into the agricultural land soil surface turned over, then again soil mix and turned over, depth is No less than 30cm, ensure that desulfurized gesso of flue gas fully mixes with soil, arrange plantation farm-forestry crop afterwards.
- 2. the method according to claim 1 that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas, it is special Sign is that described desulfurized gesso of flue gas is coal-burning power plant or the flue gas desulfurization byproduct of other industrial trades.
- 3. the method that desulfurized gesso of flue gas according to claim 1 reduces farmland richness phosphorus phosphorus levels, its feature exist In described desulfurized gesso of flue gas needs to determine content of beary metal therein before administration, and main content of beary metal must not It is higher than《Standard of soil environment quality》(GB15618-1995) secondary standard.
- 4. the method according to claim 1 that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas, it is special Sign is that the higher agricultural land soil of described phosphorus content refers to be higher than this area agricultural non-point source pollution by detecting soil phosphorus content Phosphorus content critical value, the soil of body eutrophication can be caused after phosphorus loss in soil to surrounding body.
- 5. the method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas according to claim 1 or 4, its It is characterised by, phosphorus content is less than 15g/kg agricultural land soil, and desulfurized gesso of flue gas mixed volume presses the amount of application of farmland unit area Meter：30-45 tons/hectare.
- 6. the method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas according to claim 1 or 4, its It is characterised by, phosphorus content is more than 15g/kg agricultural land soil, and desulfurized gesso of flue gas mixed volume presses the amount of application of farmland unit area Meter：45-60 tons/hectare.
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| CN201710864175.0A CN107363086A (en) | 2017-09-22 | 2017-09-22 | A kind of method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas |
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| CN201710864175.0A CN107363086A (en) | 2017-09-22 | 2017-09-22 | A kind of method that farmland richness phosphorus phosphorus levels are reduced using desulfurized gesso of flue gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108450075A (en) * | 2017-12-15 | 2018-08-28 | 上海交通大学 | A method of utilizing desulfurized gesso of flue gas recuperated vegetable plastic shed soil |
| CN109292881A (en) * | 2018-09-10 | 2019-02-01 | 大唐环境产业集团股份有限公司 | A kind of carbon-based desulfurized gypsum dephosphorization stick of biomass and its preparation, application method |
Citations (1)
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| CN103071671A (en) * | 2013-02-01 | 2013-05-01 | 江苏省农业科学院 | Method for reducing nitrogen and phosphorus non-point source pollution of dry land |
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2017
- 2017-09-22 CN CN201710864175.0A patent/CN107363086A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071671A (en) * | 2013-02-01 | 2013-05-01 | 江苏省农业科学院 | Method for reducing nitrogen and phosphorus non-point source pollution of dry land |
Non-Patent Citations (3)
| Title |
|---|
| DEXTER B. WATTS: "Influence of Flue Gas Desulfurization Gypsum on Reducing Soluble Phosphorus in Successive Runoff Events from a Coastal Plain Bermudagrass Pasture", 《JOURNAL OF ENVIRONMENTAL QUALITY》 * |
| KING KW ETC.: "Decreasing Phosphorus Loss in Tile-Drained Landscapes Using Flue Gas Desulfurization Gypsum", 《JOURNAL OF ENVIRONMENTAL QUALITY》 * |
| 朱利群等: "不同耕作方式与秸秆还田对稻田氮磷养分径流流失的影响", 《水土保持学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108450075A (en) * | 2017-12-15 | 2018-08-28 | 上海交通大学 | A method of utilizing desulfurized gesso of flue gas recuperated vegetable plastic shed soil |
| CN109292881A (en) * | 2018-09-10 | 2019-02-01 | 大唐环境产业集团股份有限公司 | A kind of carbon-based desulfurized gypsum dephosphorization stick of biomass and its preparation, application method |
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Application publication date: 20171121 |