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A kind of green planting soil for sponge city

A technology for greening planting soil and sponge city, applied in the direction of planting substrate, application, botanical equipment and methods, etc., can solve the problems of not being able to meet the requirements of planting and water permeability at the same time, and achieve easy market promotion and implementation, protection of natural ecological environment, short process effect

Active Publication Date: 2020-12-08
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patents mainly use the characteristics of steel slag's alkalinity, gelling agent and nutrient elements to improve the soil, which cannot meet the requirements of planting and water permeability at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of green planting soil for sponge city, its preparation method comprises the steps:

[0031] 1) Weigh each raw material according to the ratio, and the mass percentage of each raw material is: 0.5-0.75mm steel slag 15%, 0.35-0.5mm quartz sand 10%, 1mm sawdust 5%, the original soil with a pH value of 4.5 (acid planting Soil) 60%, additive 6% (ammonium sulfate by-product of ammonia desulfurization with 20% nitrogen content 2.4%, sintering head electrostatic precipitator ash with 10% potassium content 3.6%), expanded perlite 4%;

[0032] 2) Mix the weighed steel slag with the original soil, add water 1.5 times the weight of the two, and put it into the mixer for mixing. In order to ensure uniform mixing, control the mixing time for 20min and the mixing speed at 350r / min; Filter out the water with a filter press, continue drying with a dryer until the water content is less than 1%, then put the weighed quartz sand, wood chips, additives and expanded perlite into the ...

Embodiment 2

[0035] A kind of green planting soil for sponge city, its preparation method comprises the steps:

[0036] 1) Weigh each raw material according to the ratio, and the mass percentage of each raw material is: 0.5-0.75mm steel slag 20%, 0.35-0.5mm quartz sand 8%, 1mm wood chips 8%, the original soil with a pH value of 5.0 (acid planting Soil) 55%, additives 5% (ammonium sulfate by-product of ammonia desulfurization with 20% nitrogen content, 2% ammonium sulfate, 3% sintering head electrostatic precipitator ash with 15% potassium content), expanded perlite 4%;

[0037] 2) Mix the weighed steel slag with the original soil, add water 1.5 times the weight of the two, and put it into the mixer for mixing. In order to ensure uniform mixing, control the mixing time for 30min and the mixing speed at 400r / min; Filter out the water with a filter press, continue drying with a dryer until the water content is less than 1%, then put the weighed quartz sand, wood chips, additives and expanded ...

Embodiment 3

[0040] A kind of green planting soil for sponge city, its preparation method comprises the steps:

[0041] 1) Weigh each raw material according to the ratio, and the mass percentage of each raw material is: 0.5-0.75mm steel slag 25%, 0.35-0.5mm quartz sand 10%, wood chips below 1mm 10%, raw soil with a pH value of 5.0 (acid planting Soil) 50%, additive 2% (ammonium sulfate by-product of ammonia desulfurization with 20% nitrogen content 0.8%, sintering head electrostatic precipitator dust 1.2% with potassium content 8%), expanded perlite 3%;

[0042] 2) Mix the weighed steel slag with the original soil, add water twice the weight of the two, and put it into the mixer for mixing. In order to ensure uniform mixing, control the mixing time for 40min and the mixing speed at 400r / min; Filter out the water with a filter press, continue to dry with a dryer until the water content is less than 1%, then put the weighed quartz sand, wood chips, additives and expanded perlite into the mix...

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Abstract

The invention discloses greening planting soil for a sponge city. The greening planting soil for the sponge city comprises the following components in percent by mass: 15-30% of steel slag, 5-15% of quartz sand, 5-10% of wood dust, 40-60% of raw soil, 0-10% of an additive and 2-5% of expanded perlite. Through the steel slag and acid planting soil, the purposes of improving acid soil and eliminating a steel slag gelling property are achieved at the same time; by virtue of the porosity of the steel slag and in combination with the hydrophobicity of the quartz sand, the air permeability of the expanded perlite and the wood dust and the like, the water permeability and the air permeability of the obtained planting soil are improved; meanwhile, through an ammonia desulfurization byproduct, sintering machine head dust, the steel slag and other wastes, the nutrient content of the obtained planting soil is effectively increased; the obtained planting soil can meet plant growth demands and rainwater infiltration requirements at the same time and effectively solve the problems of resource utilization of the steel slag and other industrial wastes as well as the scarcity of natural soil at present, so that the greening planting soil has huge economic and environmental benefits.

Description

technical field [0001] The invention belongs to the field of landscaping and specifically refers to a green planting soil used for sponge city construction. Background technique [0002] With the development of my country's urbanization and the improvement of people's quality of life requirements, the proportion of landscaping in the construction of urban facilities continues to increase. On the one hand, landscaping facilities bring leisure to people, and at the same time, they also play a significant role in purifying the air, treating sewage, and reducing urban water accumulation. my country issued the "Guiding Opinions on Promoting the Construction of Sponge City" in November 2015, and pointed out that to build a sponge city, comprehensive measures such as "infiltration, storage, stagnation, purification, use, and discharge" should be adopted to minimize the impact of urban development. The impact on the ecological environment, 70% of the rainfall will be absorbed and ut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/80A01G24/44
Inventor 卢丽君康凌晨韩斌刘瑛周许林李丽坤
Owner 武汉钢铁有限公司
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