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Soil improvement method for greening soil after thermal desorption repair

A technology of soil improvement and soil improver, which is applied in the field of soil greening soil reuse and improvement after thermal desorption restoration, which can solve the problems of backfill planting soil soil source shortage, "imperfect management system, insufficient soil depth, etc. Environmental risk, good promotion value, and easy operation

Active Publication Date: 2021-12-03
CHINA URBAN CONSTR DESIGN & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are soil shortages such as "poor soil quality, high density, and insufficient soil depth" in the soil of urban green spaces in many places in my country, resource shortages such as "shortage of backfill planting soil" and "imperfect management system". Functional soil shortage prominent problem

Method used

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  • Soil improvement method for greening soil after thermal desorption repair
  • Soil improvement method for greening soil after thermal desorption repair
  • Soil improvement method for greening soil after thermal desorption repair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The first step, thermal desorption of contaminated soil remediation process to achieve the landscaping soil using a standard;

[0034] The second step, complex soil improvers, 90 parts by garden waste, livestock manure fully fermented microbial fertilizer product and 10 parts of 1 parts, stir to obtain a complex soil improver;

[0035] The third step, after complex soil amendments, soil cultivation and processing of thermal desorption soil with a 1: 2 mix, mixed thoroughly: 1.

[0036] The fourth step will be planted inside the rational allocation of regional, herbs and shrubs were planted, maintenance and management. Initial recording data, recording data according to a plant growth stage 60 days after the samples according to data collection, herbs and shrubs every 30 days, respectively, 6 months, 8 months observation period. like Figure 3 to 10 , The state is better patula vegetation growth, the growth period of 6 months, the growth height 0.89cm / month, five months pat...

Embodiment 2

[0038] The first step, thermal desorption of contaminated soil remediation process to achieve the landscaping soil using a standard;

[0039] The second step, Applied Soil, complex soil conditioner by 90 parts of garden waste, livestock manure fully fermented and 10 parts of 1 part commercial microbial fertilizer, stir to obtain a soil conditioner complex, the ratio of administration 2.02kg / m 2 ;

[0040] The third step, after complex soil amendments, soil cultivation and processing of thermal desorption soil restoration in accordance with 2: 2 were mixed, fully mixed: 1.

[0041] In the fourth step, a reasonable allocation of region, maintenance, management, and data acquisition and observation in the planting box are in the same embodiment. The peacock plants are well-behaved, the growth cycle is 6 months, the plant height increases 0.39cm / month, the flower period is 5 months, the flowering rate is 2cm, the overall flowering rate is 75%, the influous state is good, "黑麦 高度 incr...

Embodiment 3

[0043] In the first step, the contaminated soil is hot and detached, and the standard of landscaping soil is reached;

[0044] In the third step, it is mixed with the soil after the compound soil improvement agent and the treatment, and the soil is mixed according to 2: 1, and it is mixed well.

[0045] In the fourth step, it is a reasonable allocation area within the planting box, which is planted in the same example and observation with the use of the same example. The plant growth state is lag, the flower period is 5 months, the flower diameter is 2cm, the overall flowering rate is 60%, the inflorescence state is general; the height of the rye grows up to 2cm / month, the overall cover is 70%, with plant growth, yellow Ye Zhan is 60%, the blade color is slightly shallow; the high growth rate of the rose plant is 74%, the base magnetic growth rate is 1.4%, and the overall performance is good.

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Abstract

The invention discloses a soil improvement method for greening soil after thermal desorption repair. The method comprises the following steps of (1) preparing a soil conditioner which is mainly composed of landscaping wastes, fermented livestock manure and a microbial fertilizer; (2) uniformly mixing the soil conditioner, planting soil and soil after thermal desorption repair according to a volume ratio of 1: (0.9-1.1): (1.8-2.2) to obtain thermal desorption repair improved soil, the planting soil being 10-30cm of surface soil; and (3) backfilling the thermal desorption repairing and improving soil into a greening planting area, compacting, sprinkling water, and planting and maintaining plants. After treatment, physical and chemical indexes and biological indexes of the soil are recovered well. According to the improvement method, the defect that the ecological function of the soil is damaged or lost after the thermal desorption repair is overcome, operation is easy and convenient, cost is low, safety and effectiveness are achieved, secondary environment risks are avoided, a greening backfill soil source is widened, the problem of resource utilization of the restored soil is solved, and good popularization value is achieved.

Description

Technical field [0001] The present invention relates to the field of soil remediation and improved technology, particularly relates to an improved method of recycling Soil Soil green latter repairing thermal desorption. Background technique [0002] Thermal desorption is a technique capable of efficiently removing contaminants in soil remediation, mainly for removal of volatile and semi-volatile organic soil contaminants in the soil, having a high pollutant removal, repair period is short, the movable device , adaptable, reusable soil characteristics after repair, it is widely used in remediation of contaminated sites treated volatile and semi-volatile organic compounds in contaminated soil, sludge or the like. Thermal desorption soil but also cause destructive changes soil properties and ecological functions, such as bedding structure and destroy the aggregate structure, organic matter, water, mineral carbonates loss, soil animals, plants, microorganisms, or the loss, the loss o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00C09K17/14B09C1/08
CPCA01B79/00C09K17/14B09C1/08
Inventor 王国玉穆晓红曲辰刘睿张敬玉白伟岚
Owner CHINA URBAN CONSTR DESIGN & RES INST CO LTD
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