CN103820124A - Soil conditioner and application method thereof - Google Patents
Soil conditioner and application method thereof Download PDFInfo
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- CN103820124A CN103820124A CN201410077436.0A CN201410077436A CN103820124A CN 103820124 A CN103820124 A CN 103820124A CN 201410077436 A CN201410077436 A CN 201410077436A CN 103820124 A CN103820124 A CN 103820124A
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- improvement agent
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Abstract
The invention discloses a soil conditioner. The soil conditioner comprises the following components calculated by dry weight, in percentage by weight: 80%-85% of sludge and 15%-20% of flyash. The soil conditioner is environmental-friendly and suitable for soil remediation in desolated mountains and mine areas, can effectively prevent harmful gases released by the sludge from dispersing into the atmosphere, and at the same time has the effects that the soil fertility is prominently improved and the site condition for a plant is improved as well. The soil conditioner provided by the invention is easy and practicable, enables waste to be profitable, and can quicken soil remediation and land reclamation.
Description
Technical field
The present invention relates to field of environment engineering, is a kind of soil improvement agent and application process thereof specifically.
Background technology
Along with the raising that quickening and the city environmental quality of urbanization process require, the career development of China's municipal sewage treatment is in recent years very rapid.But the new waste that sewage work produces in purifying waste water--municipal sludge also fails properly to be disposed.Mud easily corruption, foul smelling, contain more pathogen and heavy metal etc., the disposal lack of standardization of mud has not only become a new environment hidden danger in China's soil and water surrounding, offset the performance of sewage work's environment purification function, and become a significant obstacle of restriction sewage disposal Healthy, waste how to dispose the day by day huge and high concentration of these quantity, has become very urgent task.Mud is containing nutrient elements such as a large amount of organic and nitrogen, phosphorus, calcium, magnesium, silicon, mud reasonable soil utilization is that a disposal costs is cheap, become the effective way that " giving up " is " treasured ", many developed country's mud soil utilizations occupy sizable ratio (30-80%).In the U.S., the utilization of mud soil is also in all disposal approach, to apply maximum approach (accounting for 34%).Before the mid-80, be abroad also to adopt the direct application method of mud in the utilization of mud soil.In view of direct use is because of operation and the inconvenience of transportation, environment is more outstanding, and after the nineties, many developed countries begin one's study and develop sewage sludge harmlessness and sludge product technology.
At present, the wider health detoxification method of China's application mainly contains sludge composting technology.Sludge composting volume is large, and PH is too high, and range of application is narrower, and uses time-consumingly, and in addition, Heavy Metals in Sludge can not be removed, and on farmland, long-term a large amount of applying sludges have the worry of heavy metal contamination farmland and food chain all the time.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of environmentally friendly, soil improvement agent and the application process thereof that can increase soil fertility, improve plant land occupation condition.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of soil improvement agent, comprise the component of following weight percentage, and calculate mud 80%-85%, flyash 15%-20% with dry weight.
Further, described flyash is the byproduct that burns and obtain in fluidized-bed with hard coal and limestone powder, and flyash water content is lower than 5%(weight), pH value scope 10.6-10.8.Wherein hard coal calorific value is 3900kcal/kg (with dry weight basis).
Further, described mud is municipal sludge, and its solid content is 25%-30%(weight).
Soil improvement agent and application process thereof, the method comprises the steps:
(1) first mix according to proportioning according to each component in soil improvement agent, for subsequent use;
(2) soil improvement agent step (1) being obtained spreads fertilizer over the fields the topsoil in deserted mountain or the mining area of the vegetation that can not grow equably, and the thickness that soil improvement agent is laid is 3-5 centimetre,
(3) plough topsoil; By even to soil improvement agent and mixing with soil;
In step (2), the consumption of described soil improvement agent is 45-50 ton/mu.
In step (3), after ploughing, described soil improvement agent accounts for the 15%-35% of topsoil volume.
Beneficial effect of the present invention is: soil improvement agent of the present invention is environmentally friendly, be applicable to deserted mountain and mining soil reparation, can effectively prevent that obnoxious flavour that mud distributes, to atmospheric diffusion, has the soil fertility of significantly improving simultaneously, improve effect of plant land occupation condition.Because soil improvement agent does not enter food chain, there is no the worry of heavy metal contamination, fool proof to environment, can really accomplish that becoming " giving up " is " treasured ".Can solve municipal sludge the like waste and process outlet, there is again obvious economic and social benefit.
Simple and feasible of the present invention, can turn waste into wealth, and can accelerate the process of soil remediation and land reclamation.Adopt soil improvement agent of the present invention can make the pH of topsoil reach more than 7.0, can meet careless vigorous growth.Broadcast sowing grass seeds having used on the topsoil after modifying agent, can accelerate land reclamation.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1: a kind of soil improvement agent, comprise the component of following weight percentage, calculate mud 80%, flyash 20% with dry weight.
Wherein, described flyash is the byproduct that burns and obtain in fluidized-bed with hard coal and limestone powder, and flyash water content is lower than 5%(weight), pH value scope 10.6-10.8.Wherein hard coal calorific value is 3900kcal/kg (with dry weight basis).1000 tons of above-mentioned coal ash liftings are for the calcium carbonate that is equivalent to 33 tons.
Described mud is municipal sludge, and its solid content is 25%(weight).Municipal sludge was the sticky mobility that do not have before mixed with flyash, while piling 1.8 meters of height, did not have water to ooze out, and pH is in 9.5 above-mentioned soil improvement agent and application processes thereof, and the method comprises the steps:
(1) first mix according to proportioning according to each component in soil improvement agent, for subsequent use;
(2) soil improvement agent step (1) being obtained spreads fertilizer over the fields the topsoil in deserted mountain or the mining area of the vegetation that can not grow equably, and the thickness that soil improvement agent is laid is 3-5 centimetre, and the consumption of soil improvement agent is 45 tons/mu;
(3) plough topsoil, make soil improvement agent and mixing with soil even; After ploughing, described soil improvement agent accounts for 15% of topsoil volume.
Implement place and be positioned at certain mine tailing district, the soil pH 4.85 in this mining area, total copper content 1850mg/kg, top layer, test site is covered with the stone of diameter 15-20 centimetre, lacks table soil, and not even a blade of grass grows.Use the modifying agent in the present embodiment in early spring, and the application process of modifying agent, annual and warm season and cold season grass seeds for many years of mixed seeding in soil afterwards, in test site in summer, grass growth is vigorous extremely then, well developed root system, and in modifying agent is manured into soil careless process of growth air, organoleptic detection is less than obvious mud smell, and topsoil pH is 7.1, and soil with organic matter content has improved 3.5 times.
Embodiment 2: a kind of soil improvement agent, comprise the component of following weight percentage, calculate mud 85%, flyash 15% with dry weight.
Wherein, described flyash is the byproduct that burns and obtain in fluidized-bed with hard coal and limestone powder, and flyash water content is lower than 5%(weight), pH value scope 10.6-10.8.Wherein hard coal calorific value is 3900kcal/kg (with dry weight basis).1000 tons of above-mentioned coal ash liftings are for the calcium carbonate that is equivalent to 33 tons.
Described mud is municipal sludge, and its solid content is 30%(weight).Municipal sludge was the sticky mobility that do not have before mixed with flyash, while piling 1.8 meters of height, did not have water to ooze out, and pH is 9.5.
Above-mentioned soil improvement agent and application process thereof, the method comprises the steps:
(1) first mix according to proportioning according to each component in soil improvement agent, for subsequent use;
(2) soil improvement agent step (1) being obtained spreads fertilizer over the fields the topsoil in deserted mountain or the mining area of the vegetation that can not grow equably, and the thickness that soil improvement agent is laid is 5 centimetres, and the consumption of soil improvement agent is 50 tons/mu;
(3) plough topsoil, make soil improvement agent and mixing with soil even; After ploughing, described soil improvement agent accounts for 35% of topsoil volume.
After above-mentioned modifying agent and soil are fully mixed, pack is sold as ornamental plant cultivation matrix.
Implement place and be positioned near certain smeltery, the surrounding soil pH of this factory 5.17, total copper content 750mg/kg in soil, total cadmium content 15.5mg/kg.At the modifying agent of using in the present embodiment, and the application process of modifying agent, annual and warm season and cold season grass seeds for many years of mixed seeding in soil afterwards, in test site in summer, grass growth is vigorous extremely then, well developed root system, topsoil pH is 7.1, soil with organic matter content has improved 4.3 times.
Embodiment 3: a kind of soil improvement agent, comprise the component of following weight percentage, calculate mud 83%, flyash 17% with dry weight.
Wherein, described flyash is the byproduct that burns and obtain in fluidized-bed with hard coal and limestone powder, and flyash water content is lower than 5%(weight), pH value scope 10.6-10.8.Wherein hard coal calorific value is 3900kcal/kg (with dry weight basis).1000 tons of above-mentioned coal ash liftings are for the calcium carbonate that is equivalent to 33 tons.
Described mud is municipal sludge, and its solid content is 27%(weight).Municipal sludge was the sticky mobility that do not have before mixed with flyash, while piling 1.8 meters of height, did not have water to ooze out, and pH is 9.5.
Above-mentioned soil improvement agent and application process thereof, the method comprises the steps:
(1) first mix according to proportioning according to each component in soil improvement agent, for subsequent use;
(2) soil improvement agent step (1) being obtained spreads fertilizer over the fields the topsoil in deserted mountain or the mining area of the vegetation that can not grow equably, and the thickness that soil improvement agent is laid is 4 centimetres, and the consumption of soil improvement agent is 47.5 tons/mu;
(3) plough topsoil, make soil improvement agent and mixing with soil even; After ploughing, described soil improvement agent accounts for 25% of topsoil volume, and the pH of topsoil is more than 7.0.
Implement place and be positioned at certain Mine Abandoned Land, this district's soil pH 5.02, total lead content 310mg/kg in soil, total zinc content 780mg/kg.At the modifying agent of using in the present embodiment, and the application process of modifying agent, annual and warm season and cold season grass seeds for many years of mixed seeding in soil afterwards, grows to grass in test site in summer then vigorous, well developed root system
,topsoil pH is 7.1, and soil with organic matter content has improved 3.9 times.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a soil improvement agent, is characterized in that, comprises the component of following weight percentage, calculates mud 80%-85%, flyash 15%-20% with dry weight.
2. soil improvement agent according to claim 1, is characterized in that, described flyash is the byproduct that burns and obtain in fluidized-bed with hard coal and limestone powder, and flyash water content is lower than 5%, pH value scope 10.6-10.8.
3. soil improvement agent according to claim 1, is characterized in that, described mud is municipal sludge, and its solid content is 25%-30%.
4. the application process of soil improvement agent claimed in claim 1, is characterized in that, the method comprises the steps:
(1) first mix according to proportioning according to each component in soil improvement agent, for subsequent use;
(2) soil improvement agent step (1) being obtained spreads fertilizer over the fields the topsoil in deserted mountain or the mining area of the vegetation that can not grow equably, and the thickness that soil improvement agent is laid is 3-5 centimetre,
(3) plough topsoil; By even to soil improvement agent and mixing with soil.
5. the application process of soil improvement agent according to claim 4, is characterized in that, in step (2), the consumption of described soil improvement agent is 45-50 ton/mu.
6. the application process of soil improvement agent according to claim 4, is characterized in that, in step (3), after ploughing, described soil improvement agent accounts for the 15%-35% of topsoil volume.
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| CN201410077436.0A CN103820124A (en) | 2014-03-05 | 2014-03-05 | Soil conditioner and application method thereof |
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| CN201410077436.0A CN103820124A (en) | 2014-03-05 | 2014-03-05 | Soil conditioner and application method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105315999A (en) * | 2014-07-29 | 2016-02-10 | 湖南省沃丰农业科技发展有限公司 | Soil improving agent and application method thereof |
| CN106433673A (en) * | 2016-09-13 | 2017-02-22 | 山西潞安集团司马煤业有限公司 | Preparation method and use method of soil conditioner for coal mining area |
| CN106916593A (en) * | 2017-02-14 | 2017-07-04 | 榆林学院 | A kind of aeolian sandy soil renovation agent and preparation method thereof and aeolian sandy soil restorative procedure |
| CN109702007A (en) * | 2018-12-27 | 2019-05-03 | 广东开源环境科技有限公司 | A kind of in-situ remediation method for heavy metals in farmland cadmium intermediate pollution |
| CN110140602A (en) * | 2019-06-14 | 2019-08-20 | 国家能源投资集团有限责任公司 | The method of arid biogeographic zone coal field revegetation |
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| US20030089151A1 (en) * | 2001-08-08 | 2003-05-15 | Logan Terry J. | Method for disinfecting and stabilizing organic wastes with mineral by-products |
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2014
- 2014-03-05 CN CN201410077436.0A patent/CN103820124A/en active Pending
Patent Citations (1)
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| US20030089151A1 (en) * | 2001-08-08 | 2003-05-15 | Logan Terry J. | Method for disinfecting and stabilizing organic wastes with mineral by-products |
Non-Patent Citations (2)
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| 苏德纯等: "《粉煤灰钝化污泥对土壤理化性质及玉米重金属累积的影响》", 《中国环境科学》 * |
| 许振岚等: "《城市污泥人工土壤中重金属生物有效性及综合毒性研究》", 《浙江大学学报(理学版)》, vol. 37, no. 3, 15 May 2010 (2010-05-15) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105315999A (en) * | 2014-07-29 | 2016-02-10 | 湖南省沃丰农业科技发展有限公司 | Soil improving agent and application method thereof |
| CN106433673A (en) * | 2016-09-13 | 2017-02-22 | 山西潞安集团司马煤业有限公司 | Preparation method and use method of soil conditioner for coal mining area |
| CN106916593A (en) * | 2017-02-14 | 2017-07-04 | 榆林学院 | A kind of aeolian sandy soil renovation agent and preparation method thereof and aeolian sandy soil restorative procedure |
| CN106916593B (en) * | 2017-02-14 | 2020-02-21 | 榆林学院 | Aeolian sandy soil restoration agent, preparation method thereof and aeolian sandy soil restoration method |
| CN109702007A (en) * | 2018-12-27 | 2019-05-03 | 广东开源环境科技有限公司 | A kind of in-situ remediation method for heavy metals in farmland cadmium intermediate pollution |
| CN109702007B (en) * | 2018-12-27 | 2021-03-19 | 广东开源环境科技有限公司 | In-situ remediation method for moderate farmland heavy metal cadmium pollution |
| CN110140602A (en) * | 2019-06-14 | 2019-08-20 | 国家能源投资集团有限责任公司 | The method of arid biogeographic zone coal field revegetation |
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Application publication date: 20140528 |