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Soil conditioner using biomass power plant ash as main raw material, its preparation and application method

A technology of biomass power plant ash and soil conditioner, which is applied in the application, fertilizer mixture, fertilization device and other directions, can solve the problems of not timely and reasonable utilization of power plant ash, consumption of acid resources and energy, and waste of resources, etc., and achieves a small bulk density. , Improve the utilization rate, the effect of strong water absorption

Active Publication Date: 2015-03-18
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to avoid the problems caused by its alkalinity, it is often necessary to neutralize it with acid during processing, which not only consumes acid resources and energy, but also makes it lose the function of improving acidic soil. For areas with acidified soil, it is undoubtedly is a waste of resources
Moreover, some biomass power plants still have hidden dangers of "secondary pollution" because the power plant ash cannot be used in a timely and reasonable manner.

Method used

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  • Soil conditioner using biomass power plant ash as main raw material, its preparation and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Put 850kg of biomass power plant ash, 50kg of sawdust and 100kg of clay into the mixer, add 200kg of tap water, mix well, and the pH after mixing is greater than 10;

[0027] 2. Use a disc granulator to granulate, the particle size is 0.1-5mm, and the granulation shape is spherical;

[0028] 3. In the dryer, keep the temperature at 75°C and bake until the water content is 10% by mass;

[0029] 4. Sieve to remove lumps with a particle size larger than 5mm and powders with a particle size smaller than 0.1mm, and pack them in 50kg bags for use;

[0030] 5. Apply 100kg per mu evenly to the red soil, plow the ground and mix it into the topsoil of about 0-20cm;

[0031] 6. Measured one month later, the average soil pH increased from 5.0 to 6.3.

Embodiment 2

[0033] 1. Put 900kg of biomass power plant ash, 70kg of sawdust and 30kg of modified lignin into a mixer, add 230kg of tap water, and mix well;

[0034] 2. Use an extrusion granulator to granulate, the particle size is 0.1-5mm, and the shape of the granulation is irregular pellets;

[0035] 3. In the dryer, keep the temperature at 100°C, and bake until the water content is 9%;

[0036] 4. Sieve to remove lumps with a particle size larger than 5mm and powders with a particle size smaller than 0.1mm, and pack them in 50kg bags for use;

[0037] 5. Apply 110kg per mu evenly to the red soil, plow the ground and mix it into the topsoil of about 0-22cm;

[0038] 6. One month later, the average pH of the soil increased from 5.2 to 6.8, and the growth of the planted Binagrass was significantly better than that of the unimproved soil.

Embodiment 3

[0040] 1. Put 860kg of biomass power plant ash, 100kg of sawdust and 40kg of modified starch into a mixer, add 260kg of tap water, and mix well;

[0041] 2. Use a drum granulator to granulate, the particle size is 0.1-5mm, and the granulation shape is spherical;

[0042] 3. In the dryer, keep the temperature at 150°C and bake until the water content is 8%;

[0043] 4. Sieve to remove lumps with a particle size larger than 5mm and powders with a particle size smaller than 0.1mm, and pack them in 50kg bags for use;

[0044] 5. Evenly apply 110kg per mu of land to the red soil, and at the same time apply fertilizer, turn the ground to mix it into the topsoil of about 0-22cm;

[0045] 6. One month later, the soil pH value increased from 5.5 to 7.0.

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Abstract

The invention relates to a soil conditioner using biomass power plant ash as a raw material, comprising 80-94 wt% of biomass power plant ash, 5-10 wt% of saw powder, and 1-10 wt% of binding agent. The preparation method comprises the following steps: (1) mixing the raw materials in proportion, adding 0.15-0.30 times of water, and uniformly stirring; (2) carrying out granulation; (3) drying after granulation until the water content being 8-10 wt% at a temperature of 70-150 DEG C; and (4) sieving, weighing and bagging for subsequent use. The application method is characterized by using 50-150 kg of the soil conditioner in per 667 m<2> acid soil. According to the invention, the acid-base balance of the soil is greatly improved, the medium trace elements taken away from the soil in harvesting biomass are supplemented, the reasonable circulation of nutritive components is realized, the growth of plants is promoted; simultaneously the sustained release of mineral elements is achieved, and the utilization rate of fertilizers is greatly increased.

Description

technical field [0001] The invention relates to a soil conditioner with biomass power plant ash as the main raw material, a preparation method and a use method of the soil conditioner, and the soil conditioner is used to improve the quality of acidic soil. Background technique [0002] Acidic soil is the general term for soil with pH < 7. The area of ​​acidic soil in my country is about 2.04×108hm2, accounting for 21% of the total land area. It is mainly distributed in the vast tropical and In subtropical regions, the pH of most acidic soils is less than 5.6; the podzol in the forest areas of the Greater Khingan Mountains in Northeast China and the southern tip of the Qinghai-Tibet Plateau are also typical acidic soils; in recent years, the acidification of some agricultural areas has become increasingly serious, such as Shouguang in Shandong, Wuhan in Hubei, etc. , Anhui Chuzhou, a large number of farmlands and greenhouses due to continuous cropping of vegetables and grai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/04C05G3/80
Inventor 柳丽杰李江川李万里陈卫文张岩丰
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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