CN114149281A - Sand soil modifier with phosphorus stabilization effect and preparation method thereof - Google Patents
Sand soil modifier with phosphorus stabilization effect and preparation method thereof Download PDFInfo
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- CN114149281A CN114149281A CN202111597984.2A CN202111597984A CN114149281A CN 114149281 A CN114149281 A CN 114149281A CN 202111597984 A CN202111597984 A CN 202111597984A CN 114149281 A CN114149281 A CN 114149281A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
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- 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
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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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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- Chemical & Material Sciences (AREA)
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- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Tropical Medicine & Parasitology (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Pest Control & Pesticides (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a sandy soil modifier with a phosphorus stabilizing effect and a preparation method thereof, wherein the method is to improve a sludge composting process, improve the performance of a sludge composting product and reduce the sludge composting cost; and secondly, the phosphorus stabilization effect of the sludge compost is endowed, and the application prospect of the sludge compost is expanded.
Description
Technical Field
The invention relates to the technical field of soil conditioners, in particular to a sandy soil conditioner with a phosphorus stabilizing effect and a preparation method thereof.
Background
Sandy soil is poor in structure and weak in water and fertilizer retention capacity, and in order to obtain high yield of crops, excessive chemical fertilizer is often applied to the crops planted on the sandy soil. Because the migration and transformation of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer in soil are different, the absorption and utilization amount of crops is different, the phosphorus content of sand soil planted intensively is seriously exceeded standard, the growth of crops is hindered, and water eutrophication and environmental pollution are easily caused. The product of the sludge after harmless treatment has better water absorption and retention performance and is an excellent material for improving sandy soil. However, due to the difficulty in dehydration in the harmless treatment of sludge compost, the use amount of rice hulls, straws and other materials is large, the fermentation treatment cost is high, the product density is high, the product is easy to agglomerate, the product is not easy to be fully combined with soil, and the soil improvement effect cannot be fully exerted.
Disclosure of Invention
In view of the above, the invention provides a sandy soil modifier with a phosphorus stabilizing effect and a preparation method thereof,
the technical means adopted by the invention are as follows:
a preparation method of a sandy soil modifier with a phosphorus stabilizing effect comprises the following steps in parts by weight:
mixing 4000 parts of fresh sludge, 800-doped expanded perlite micro powder and 160-doped 200 parts of straw powder, turning and throwing for 4-5 times, adding 2-4 parts of sludge decomposing agent after uniformly stirring, continuously turning and throwing for 2-3 times, composting once every 6 days, adding 400-doped 480 parts of reduced iron powder after composting for 30-40 days, and uniformly stirring to obtain the sand-soil modifier.
Preferably, the straw powder is corn straw, and is prepared by crushing and sieving through a 20-mesh sieve.
Preferably, the fine reduced iron is sieved through a 100-mesh sieve.
Preferably, the expanded perlite micro powder is 800 parts, the corn straw powder is 200 parts, the sludge-decomposing inoculant is 2 parts, and the reduced iron powder is 480 parts.
The invention also provides a sandy soil modifier prepared by the preparation method.
The invention has the beneficial effects that:
the method provided by the invention has the advantages that firstly, the sludge composting process is improved, the performance of sludge composting products is improved, and the sludge composting cost is reduced; and secondly, the phosphorus stabilization effect of the sludge compost is endowed, and the application prospect of the sludge compost is expanded. The sludge has high water content and is difficult to decompose, the sludge composting performance of a sludge treatment plant is improved mainly by adding dewatering equipment and adding a large amount of rice husks, wood chips and the like, the investment is large, and the cost is high.
According to the invention, the by-product perlite micropowder in the perlite puffing process is used as a filler, secondary dehydration is not required for sludge, and the addition of straws is reduced, so that the sludge composting cost is reduced, and the product is looser and is more suitable for soil improvement. By adding the reduced iron powder, the performance of stabilizing soil phosphorus can be enhanced, the phosphorus concentration of a soil solution is reduced, phosphate fertilizer resources are saved, and the environment is protected.
The invention also provides a sandy soil modifier which has the effects of obviously improving the crop yield, increasing the field water retention rate of soil and reducing the phosphorus concentration of a soil solution after being used, thereby reducing the migration of phosphorus to a water body and protecting the agricultural ecological environment, and is economic and environment-friendly.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1
The fresh sludge is provided by a fish product processing plant, the water content of the fresh sludge is less than 90%, and the pollutant content meets the A-level (cultivated land, garden land and grassland) standard of GB 4284-2018.
The sludge-decomposing inoculant is also called an organic fertilizer leavening agent, is a purchased product sold in the market, is specifically produced by Weifang Rui biological technology Limited, and mainly comprises photosynthetic bacteria, lactic acid bacteria, spore bacteria, fermentation filamentous bacteria and the like.
Mixing 4000 kg of fresh sludge (with the water content of 89 percent), 1000 kg of expanded perlite micropowder and 160 kg of corn straw powder, turning and throwing for 5 times by using a turner, adding 4 kg of sludge decomposing agent, continuously turning and throwing for 3 times, composting, turning and piling once every 6 days, adding 400 kg of reduced iron powder after 40 days, and uniformly stirring to obtain a sand modifier finished product I.
Example 2:
the fresh sludge is provided by a fish product processing plant, the water content of the fresh sludge is less than 90%, and the pollutant content meets the A-level (cultivated land, garden land and grassland) standard of GB 4284-2018.
The sludge-decomposing inoculant is also called an organic fertilizer leavening agent, is a purchased product sold in the market, is specifically produced by Weifang Rui biological technology Limited, and mainly comprises photosynthetic bacteria, lactic acid bacteria, spore bacteria, fermentation filamentous bacteria and the like.
Mixing 4000 kg of fresh sludge (with the water content of 88 percent), 950 kg of expanded perlite micropowder and 180 kg of corn straw powder, turning and throwing for 4 times by using a turner, adding 3 kg of sludge maturity agent (Weifang Ruchen biotechnology limited), continuously turning and throwing for 3 times, composting, turning and piling once every 6 days, adding 440 kg of reduced iron powder after 35 days, and uniformly stirring to obtain a sandy soil modifier finished product II.
Example 3:
the fresh sludge is provided by a fish product processing plant, the water content of the fresh sludge is less than 90%, and the pollutant content meets the A-level (cultivated land, garden land and grassland) standard of GB 4284-2018.
The sludge-decomposing inoculant is also called an organic fertilizer leavening agent, is a purchased product sold in the market, is specifically produced by Weifang Rui biological technology Limited, and mainly comprises photosynthetic bacteria, lactic acid bacteria, spore bacteria, fermentation filamentous bacteria and the like.
Mixing 4000 kg of fresh sludge (with the water content of 86 percent), 800 kg of expanded perlite micropowder and 200 kg of corn straw powder, turning and throwing for 4 times by using a turner, adding 2 kg of sludge maturity agent (Weifang Ruchen biotechnology limited), continuously turning and throwing for 2 times, composting, turning and piling once every 6 days, adding 480 kg of reduced iron powder after 30 days, and uniformly stirring to obtain a third sand modifier product.
The organic matter, pH and lead, zinc, chromium and arsenic contents of the obtained sand modifier finished products are measured by referring to NY/T3034-2016 according to one to three references, and are shown in the following table 1:
TABLE 1 physicochemical indices of soil conditioners
| Finished product | pH | Organic matter (g/kg) | Arsenic (mg/kg) | Mercury (mg/kg) | Lead (mg/kg) | Separate (mg/kg) | Chromium (mg/kg) |
| A | 5.8 | 7.88 | 2.82 | 0.065 | 17.9 | 0.41 | 61.2 |
| II | 5.8 | 8.03 | 2.57 | 0.045 | 15.7 | 0.35 | 54.6 |
| III | 5.7 | 8.15 | 2.76 | 0.047 | 18.4 | 0.53 | 64.7 |
Peanut and sweet potato are used as test crops, field tests are carried out in the ruins of Wenchang city, Hainan province, soil is coastal sandy soil, green-peel wax gourd is planted in the former stubbles, the basic physicochemical property of the soil is pH 5.8, 9.2 g/kg of organic matters, 44.7 mg/kg of alkaline hydrolysis nitrogen, 371.1 mg/kg of available phosphorus and 97.8 mg/kg of quick-acting potassium. In the field test, 2 crops (a peanut variety is 'monkey in one litter', a sweet potato variety is 'watermelon red') are set, each crop is treated by 4 times, the crops are respectively a blank control group (without soil conditioner), a finished product I, a finished product II and a finished product III, the square meter of each cell is 12, the application amount of the finished product I to the finished product III is 18 kg for each cell, and the finished products are subjected to rotary tillage and uniform mixing after surface spreading. After the test is finished, the cell yield is measured, the soil volume weight, the field water holding rate of the soil and the phosphorus content of the soil solution are measured by a cutting ring method (the phosphorus content in the water is measured by centrifugation after the soil sample and the water are cultured in a shaking way for 24 hours according to the ratio of 1: 2.5).
The field test effect is shown in table 2 and table 3:
TABLE 2 soil conditioner peanut field test effect
| Treatment of | Cell output (kg) | Soil volume weight (g/cm)3) | Water holdup (%) | Phosphorus content of soil solution (mg/L) |
| Control group | 3.16 | 1.58 | 8.6 | 1.27 |
| Finished product one | 3.39 | 1.55 | 11.6 | 0.46 |
| Product two | 3.47 | 1.62 | 11.4 | 0.51 |
| Product III | 3.45 | 1.58 | 11.3 | 0.53 |
TABLE 3 soil conditioner sweet potato field test effect
| Treatment of | Cell output (kg) | Soil volume weight (g/cm)3) | Water holdup (%) | Phosphorus content of soil solution (mg/L) |
| Control group | 30.48 | 1.57 | 8.8 | 1.24 |
| Finished product one | 35.62 | 1.59 | 11.7 | 0.47 |
| Product two | 33.15 | 1.56 | 11.7 | 0.48 |
| Product III | 35.87 | 1.54 | 11.4 | 0.44 |
Compared with a blank control group, the soil conditioner product prepared by the invention is applied to the coastal sandy soil to be tested, the peanut yield is increased by 7.2-9.8%, the sweet potato yield is increased by 8.8-17.7%, the field water-holding rate of the soil is increased by 29.5-34.9%, the phosphorus content of the soil solution is reduced by 58.3-64.5%, and the soil conditioner product has obvious effects on improving the soil fertility of sandy soil, stabilizing soil phosphorus and reducing the migration of phosphorus to a water body.
In conclusion, the method provided by the invention is used for improving the sludge composting process, improving the performance of sludge composting products and reducing the sludge composting cost; and secondly, the phosphorus stabilization effect of the sludge compost is endowed, and the application prospect of the sludge compost is expanded. The sludge has high water content and is difficult to decompose, the sludge composting performance of a sludge treatment plant is improved mainly by adding dewatering equipment and adding a large amount of rice husks, wood chips and the like, the investment is large, and the cost is high.
According to the invention, the by-product perlite micropowder in the perlite puffing process is used as a filler, secondary dehydration is not required for sludge, and the addition of straws is reduced, so that the sludge composting cost is reduced, and the product is looser and is more suitable for soil improvement. By adding the reduced iron powder, the performance of stabilizing soil phosphorus can be enhanced, the phosphorus concentration of a soil solution is reduced, phosphate fertilizer resources are saved, and the environment is protected.
The invention also provides a sandy soil modifier which has the effects of improving crop yield, improving sandy soil water retention performance and reducing the phosphorus concentration of a sandy soil solution after being used, and is economic and environment-friendly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A preparation method of a sandy soil modifier with a phosphorus stabilizing effect is characterized by comprising the following steps of:
mixing 4000 parts of fresh sludge, 800-doped expanded perlite micro powder and 160-doped 200 parts of straw powder, turning and throwing for 4-5 times, uniformly stirring, adding 2-4 parts of sludge decomposing agent, continuously turning and throwing for 2-3 times, composting, turning and piling once every 6 days, adding 400-doped 480 parts of reduced iron powder after composting for 30-40 days, and uniformly stirring to obtain the sand soil modifier.
2. The method for preparing a sandy soil improver with a phosphorus stabilizing effect as claimed in claim 1, wherein the straw powder is corn straw, and is prepared by crushing and sieving the corn straw with a 20-mesh sieve.
3. The method of claim 1, wherein the reduced iron powder is passed through a 100 mesh sieve.
4. The method for preparing a sand soil modifier with phosphorus stabilization effect as claimed in claim 1, wherein the expanded perlite micropowder is 800 parts, the corn straw powder is 200 parts, the sludge-decomposing inoculant is 2 parts, and the reduced iron powder is 480 parts.
5. A sandy soil improver prepared by the preparation method as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111597984.2A CN114149281A (en) | 2021-12-24 | 2021-12-24 | Sand soil modifier with phosphorus stabilization effect and preparation method thereof |
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| CN202111597984.2A CN114149281A (en) | 2021-12-24 | 2021-12-24 | Sand soil modifier with phosphorus stabilization effect and preparation method thereof |
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Citations (9)
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| CN102754540A (en) * | 2012-06-26 | 2012-10-31 | 辽宁大学 | Sandy soil improving method |
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| CN104232096A (en) * | 2014-05-30 | 2014-12-24 | 昆明绿色中迅生物有限公司 | Soil conditioner |
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2021
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