阅读说明：本技术 一种建筑渣土回收再利用的工艺 (Building residue soil recycling process ) 是由 何汝江 于 2020-06-10 设计创作，主要内容包括：本发明公开了一种建筑渣土回收再利用的工艺,S1、建筑渣土晾晒：将泥浆固化土、青丝泥等建筑渣土进行集中化回收,回收后将其放置在干燥环境下进行晾晒,待其含水率晾晒至15-18％后即可,涉及建筑渣土回收技术领域。该建筑渣土回收再利用的工艺,通过添加聚氧烯烃、生物炭和发酵菌,能够对建筑渣土内的重金属进行很好的吸附以及中和,以及改良后土壤养分的有效性和生物活性得到明显提高,通过添加腐植酸、亚硒酸钠和微量元素混合料,能够很好的改善土壤营养,同时土壤中含有富硒物质,有利于植物的生长,改良后的土壤,能替代黄泥和营养土,也为城市生活垃圾的产生找到了合理利用的价值所在,能够从源头消减污染,提高资源利用率。(The invention discloses a process for recycling building muck, which comprises the following steps of S1: the method comprises the steps of performing centralized recovery on the building muck such as mud solidified soil, green silk mud and the like, placing the recovered building muck in a dry environment for airing until the water content of the recovered building muck is aired to 15-18%, and relates to the technical field of building muck recovery. The process for recycling the building residue soil comprises the steps of adding polyoxyalkene, biochar and zymophyte, well adsorbing and neutralizing heavy metals in the building residue soil, obviously improving the effectiveness and bioactivity of soil nutrients after improvement, adding humic acid, sodium selenite and trace element mixture, well improving the soil nutrients, containing selenium-rich substances in the soil, being beneficial to the growth of plants, and replacing yellow mud and nutrient soil, finding out reasonable utilization value for the production of municipal domestic garbage, reducing pollution from the source, and improving the resource utilization rate.)

1. A process for recycling building residue soil is characterized by comprising the following steps:

s1, airing the building residue soil: the construction dregs such as mud solidified soil, green silk mud and the like are intensively recovered, and after the construction dregs are recovered, the construction dregs are placed in a dry environment for airing until the water content is aired to 15 to 18 percent;

s2, smashing building residue soil: after the building residue soil is aired, picking up waste plastics and metal materials in the building residue soil, adding the waste plastics and the metal materials into a grinder, and fully grinding to obtain building residue soil crushed materials;

s3, selecting raw materials of the improved additive: selecting 25-36 parts of bentonite, 5-10 parts of plant ash, 10-15 parts of sludge, 3-6 parts of crop crushed materials, 8-14 parts of humic acid, 2-7 parts of sodium selenite, 1-3 parts of a microelement mixture, 1-3 parts of zymophyte, 1-3 parts of polyoxyalkene, 4-8 parts of charcoal, 6-8 parts of animal manure and 9-12 parts of purified water;

s4, preparation of improved additive: adding the bentonite, the sludge and the animal wastes selected in the step S3 into a pulverizer, fully pulverizing, adding the pulverized materials into a mixing stirrer, adding the plant ash, the crop crushed materials, the humic acid, the sodium selenite, the trace element mixture, the zymophyte, the polyoxyalkene, the biochar and the purified water selected in the step S3 into the mixing stirrer, controlling the stirring temperature to be 30-50 ℃, and stirring for 15-20min to obtain an improved additive;

s5, mixing the building residue soil with the modifier: adding the building residue soil crushed material obtained in the step S2 and the improved additive obtained in the step S4 into a mixing stirrer, controlling the stirring temperature at 50-70 ℃, and stirring for 30-40min to obtain a building residue soil mixture;

s6, curing and fermenting the building residue soil mixture: and (5) placing the building residue soil mixture obtained in the step (S5) in a closed environment for curing and fermenting for 20-25h, and controlling the temperature at 35-45 ℃ to obtain the improved soil.

2. The process for recycling building residue soil according to claim 1, wherein the process comprises the following steps: the improved additive comprises the following components: 25 parts of bentonite, 10 parts of plant ash, 15 parts of sludge, 3 parts of crop crushed materials, 8 parts of humic acid, 7 parts of sodium selenite, 3 parts of a microelement mixture, 3 parts of zymophyte, 3 parts of polyoxyalkene, 8 parts of biochar, 6 parts of animal waste and 9 parts of purified water.

3. The process for recycling building residue soil according to claim 1, wherein the process comprises the following steps: the improved additive comprises the following components: 30 parts of bentonite, 7 parts of plant ash, 13 parts of sludge, 5 parts of crop crushed materials, 11 parts of humic acid, 5 parts of sodium selenite, 2 parts of a microelement mixture, 2 parts of zymophyte, 2 parts of polyoxyalkene, 6 parts of biochar, 7 parts of animal waste and 10 parts of purified water.

4. The process for recycling building residue soil according to claim 1, wherein the process comprises the following steps: the improved additive comprises the following components: 36 parts of bentonite, 5 parts of plant ash, 10 parts of sludge, 6 parts of crop crushed material, 14 parts of humic acid, 2 parts of sodium selenite, 1 part of a microelement mixture, 1 part of zymocyte, 1 part of polyoxyalkene, 4 parts of biochar, 8 parts of animal waste and 12 parts of purified water.

5. The process for recycling building residue soil according to any one of claims 1 to 4, wherein: the crop crushed materials are one or more of soybean straw crushed materials, corn straw crushed materials and rice straw crushed materials, the microelement mixture contains iron, copper, zinc and the like, and the animal manure is cattle manure.

6. The process for recycling building residue soil according to claim 1, wherein the process comprises the following steps: in the step S5, the adding ratio of the building slag soil crushed material to the improving additive is 6: 1.

Technical Field

The invention relates to the technical field of building residue soil recovery, in particular to a process for recovering and reusing building residue soil.

Background

The construction waste refers to residue soil, waste material, residual mud and other wastes generated in the process of construction, laying, dismantling and repairing of various buildings, structures, pipe networks and the like of construction units or personal teams, the mud solidified soil and the green silk mud are the construction waste generated in the development of modern cities, have no planting and nutritive values and no water permeability, and a large amount of construction residue soil is piled as urban waste every year and cannot be treated, so that a process for recycling the construction residue soil is urgently needed to recycle the piled construction residue soil.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a process for recycling building muck, which solves the problems that the existing building muck is accumulated in large quantity and cannot be recycled.

(II) technical scheme

Based on the technical problems in the background art, the invention provides a process for recycling building muck, which comprises the following steps:

s1, airing the building residue soil: the construction dregs such as mud solidified soil, green silk mud and the like are intensively recovered, and after the construction dregs are recovered, the construction dregs are placed in a dry environment for airing until the water content is aired to 15 to 18 percent;

s2, smashing building residue soil: after the building residue soil is aired, picking up waste plastics and metal materials in the building residue soil, adding the waste plastics and the metal materials into a grinder, and fully grinding to obtain building residue soil crushed materials;

s3, selecting raw materials of the improved additive: selecting 25-36 parts of bentonite, 5-10 parts of plant ash, 10-15 parts of sludge, 3-6 parts of crop crushed materials, 8-14 parts of humic acid, 2-7 parts of sodium selenite, 1-3 parts of a microelement mixture, 1-3 parts of zymophyte, 1-3 parts of polyoxyalkene, 4-8 parts of charcoal, 6-8 parts of animal manure and 9-12 parts of purified water;

s4, preparation of improved additive: adding the bentonite, the sludge and the animal wastes selected in the step S3 into a pulverizer, fully pulverizing, adding the pulverized materials into a mixing stirrer, adding the plant ash, the crop crushed materials, the humic acid, the sodium selenite, the trace element mixture, the zymophyte, the polyoxyalkene, the biochar and the purified water selected in the step S3 into the mixing stirrer, controlling the stirring temperature to be 30-50 ℃, and stirring for 15-20min to obtain an improved additive;

s5, mixing the building residue soil with the modifier: adding the building residue soil crushed material obtained in the step S2 and the improved additive obtained in the step S4 into a mixing stirrer, controlling the stirring temperature at 50-70 ℃, and stirring for 30-40min to obtain a building residue soil mixture;

s6, curing and fermenting the building residue soil mixture: and (5) placing the building residue soil mixture obtained in the step (S5) in a closed environment for curing and fermenting for 20-25h, and controlling the temperature at 35-45 ℃ to obtain the improved soil.

Preferably, the raw materials comprise the following components: 25 parts of bentonite, 10 parts of plant ash, 15 parts of sludge, 3 parts of crop crushed materials, 8 parts of humic acid, 7 parts of sodium selenite, 3 parts of a microelement mixture, 3 parts of zymophyte, 3 parts of polyoxyalkene, 8 parts of biochar, 6 parts of animal waste and 9 parts of purified water.

Preferably, the raw materials comprise the following components: 30 parts of bentonite, 7 parts of plant ash, 13 parts of sludge, 5 parts of crop crushed materials, 11 parts of humic acid, 5 parts of sodium selenite, 2 parts of a microelement mixture, 2 parts of zymophyte, 2 parts of polyoxyalkene, 6 parts of biochar, 7 parts of animal waste and 10 parts of purified water.

Preferably, the raw materials comprise the following components: 36 parts of bentonite, 5 parts of plant ash, 10 parts of sludge, 6 parts of crop crushed material, 14 parts of humic acid, 2 parts of sodium selenite, 1 part of a microelement mixture, 1 part of zymocyte, 1 part of polyoxyalkene, 4 parts of biochar, 8 parts of animal waste and 12 parts of purified water.

Preferably, the agricultural crop crushed materials are one or more of soybean straw crushed materials, corn straw crushed materials and rice straw crushed materials, the microelement mixture contains iron, copper, zinc and the like, and the animal manure is cow manure.

Preferably, the adding ratio of the building waste soil crushed material and the improving additive in the step S5 is 6: 1.

(III) advantageous effects

The invention provides a process for recycling building residue soil. The method has the following beneficial effects: the process for recycling the building muck comprises the following steps of S1: the construction dregs such as mud solidified soil, green silk mud and the like are recycled in a centralized way, and S2, the construction dregs are crushed: after the building residue soil is aired, removing garbage plastics and metal materials in the building residue soil, and selecting raw materials of S3 and an improvement additive: selecting 25-36 parts of bentonite, 5-10 parts of plant ash, 10-15 parts of sludge, 3-6 parts of crop crushed materials, 8-14 parts of humic acid, 2-7 parts of sodium selenite, 1-3 parts of a microelement mixture, 1-3 parts of zymophyte, 1-3 parts of polyoxyalkene, 4-8 parts of charcoal, 6-8 parts of animal manure and 9-12 parts of purified water, S4 and an improved additive for preparation: and (3) adding the bentonite, the sludge and the animal wastes selected in the step (S3) into a grinder, fully grinding, and mixing S5, the building residue soil and the modifying agent: adding the building residue soil crushed material in the step S2 and the improvement additive in the step S4 into a mixing stirrer, and S6, curing and fermenting the building residue soil mixture: placing the building residue soil mixture obtained in the step S5 in a closed environment for aging and fermenting for 20-25h, controlling the temperature at 35-45 ℃, the improved soil can be obtained, the heavy metals in the building residue soil can be well adsorbed and neutralized by adding the polyoxyalkene, the biochar and the zymophyte, obviously improves the effectiveness and the biological activity of the soil nutrients after the improvement, improves the air permeability and the water permeability of the building residue soil, by adding the mixture of humic acid, sodium selenite and trace elements, the soil nutrition can be well improved, meanwhile, the soil contains selenium-rich substances, so that the growth of plants is facilitated, the improved soil can replace yellow mud and nutrient soil, a reasonable utilization value is found for the generation of municipal domestic waste, the pollution can be reduced from the source, the resource utilization rate is improved, and the harm to the health of human beings and the environment is reduced or eliminated.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides three technical schemes: a process for recycling building residue soil specifically comprises the following embodiments: