Sandy soil modifier with phosphorus stabilizing effect and preparation method thereof

A sandy soil conditioner and stabilization technology, applied in the field of sandy soil conditioner and its preparation, can solve the problems that soil improvement effect cannot be fully exerted, soil is not easy to be fully combined, and the cost of fermentation treatment is high, so as to improve sludge composting process and cost The effect of high, high moisture content

Pending Publication Date: 2022-03-08
COCONUT RES INST OF CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the harmless treatment of sludge composting is difficult due to the difficulty of dehydration, the large amount of materials such as rice husks and straws, the high cost of fermentation treatment, and the high density of the product, which is easy to agglomerate and is not easy to fully combine with the soil, so the soil improvement effect cannot be fully exerted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The fresh sludge is provided by the fish product processing factory. The water content of the fresh sludge is less than 90%, and the pollutant content meets the A-level (arable land, garden land, pasture land) standard of GB4284-2018.

[0018] Sludge decomposing agent, also known as organic fertilizer starter, is a commercially available product, specifically produced by Weifang Ruichen Biotechnology Co., Ltd., and its main components include photosynthetic bacteria, lactic acid bacteria, spore bacteria, and fermentative filamentous bacteria.

[0019] Mix 4000 kg of fresh sludge (moisture content 89%) with 1000 kg of expanded perlite micropowder and 160 kg of corn stalk powder, turn over 5 times with a turning machine, add 4 kg of sludge decomposing agent, and continue turning over 3 times After composting, turn the pile once every 6 days, add 400 kg of reduced iron powder after 40 days, and stir well to get the finished product of sand and soil improver.

Embodiment 2

[0021] The fresh sludge is provided by the fish product processing factory. The water content of the fresh sludge is less than 90%, and the pollutant content meets the A-level (arable land, garden land, pasture land) standard of GB4284-2018.

[0022] Sludge decomposing agent, also known as organic fertilizer starter, is a commercially available product, specifically produced by Weifang Ruichen Biotechnology Co., Ltd., and its main components include photosynthetic bacteria, lactic acid bacteria, spore bacteria, and fermentative filamentous bacteria.

[0023] 4000 kg of fresh sludge (water content 88%) was mixed with 950 kg of expanded perlite micropowder and 180 kg of corn stalk powder, turned over 4 times with a turner, and added sludge decomposing agent (Weifang Ruichen Biotechnology Co., Ltd. ) 3 kilograms, continue to compost after turning over and throwing 3 times, turn over once every 6 days, add 440 kilograms of reduced iron powders after 35 days, promptly get sandy soil...

Embodiment 3

[0025] The fresh sludge is provided by the fish product processing factory. The water content of the fresh sludge is less than 90%, and the pollutant content meets the A-level (arable land, garden land, pasture land) standard of GB4284-2018.

[0026] Sludge decomposing agent, also known as organic fertilizer starter, is a commercially available product, specifically produced by Weifang Ruichen Biotechnology Co., Ltd., and its main components include photosynthetic bacteria, lactic acid bacteria, spore bacteria, and fermentative filamentous bacteria.

[0027] Mix 4000 kilograms of fresh sludge (water content 86%) with 800 kilograms of expanded perlite micropowder and 200 kilograms of corn stalk powder, turn over 4 times with a turning machine, add sludge decomposing agent (Weifang Ruichen Biotechnology Co., Ltd. ) 2 kilograms, continue to compost after 2 times of turning and throwing, turn the pile once every 6 days, add 480 kilograms of reduced iron powder after 30 days, and ge...

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PUM

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Abstract

The invention discloses a sandy soil improver with a phosphorus stabilizing effect and a preparation method thereof. The method has the advantages that firstly, a sludge composting process is improved, the performance of a sludge composting product is improved, and the sludge composting cost is reduced; and secondly, a phosphorus stabilizing effect is given to sludge compost, and the application prospect is expanded.

Description

technical field [0001] The invention relates to the technical field of soil improvers, in particular to a sandy soil improver with phosphorus stabilizing effect and a preparation method thereof. Background technique [0002] Sandy soil has poor structure and weak water and fertilizer retention capacity. In order to obtain high yield of crops, excessive chemical fertilizers are often used for planting crops on sandy soil. Due to the different migration and transformation of nitrogen, phosphorus and potassium fertilizers in the soil, the amount of absorption and utilization of crops is different, resulting in the excessive phosphorus content in sandy soil for intensive planting, which hinders crop growth and easily causes water eutrophication and environmental pollution. The products after the harmless treatment of sludge have good water absorption and water retention properties, and are excellent materials for sandy soil improvement. However, the harmless treatment of sludge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/20C05G3/80C09K17/40C09K101/00
CPCC05D9/00C05F17/20C05G3/80C09K17/40C09K2101/00C05D9/02C05F7/00C05F11/00Y02W30/40
Inventor 付登强刘小玉
Owner COCONUT RES INST OF CHINESE ACAD OF TROPICAL AGRI SCI
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