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Method for preparing ecological slope protection substrate from dredging silt

A technology for dredging silt and ecological slope protection, applied in the field of slope ecological slope protection, can solve the problems of excessive heavy metal content, waste of land resources, old and monotonous appearance, etc., and achieves the effect of low engineering cost, promoting germination and growth, and reducing engineering cost.

Inactive Publication Date: 2020-04-14
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dredged silt in industrially developed cities often contains a large amount of salts (N, P), organic matter and heavy metal pollutants. Simple disposal and stacking methods will pollute the environment and cause damage to land resources. waste
On the other hand, when silt is used as fertilizer in farmland and orchards, the silt will cause excessive heavy metal content in crops, which will cause harm to human health. Therefore, it is currently the Technical problems that need to be solved urgently
At the same time, the traditional mortar (dry) masonry (block) stone protection technology has many shortcomings, such as: large stone consumption, low construction efficiency, difficult maintenance and repair, old and monotonous appearance, and unsuitable for greening and landscaping, etc.

Method used

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  • Method for preparing ecological slope protection substrate from dredging silt
  • Method for preparing ecological slope protection substrate from dredging silt
  • Method for preparing ecological slope protection substrate from dredging silt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1. Soak the plant seeds in clear water for 18-24 hours to obtain the plant seeds A to be sown, the plant seeds are Bermudagrass seeds;

[0031] Step 2. Mix 20 parts of topsoil and 0.15 parts of water-retaining agent and mix evenly to form an intermediate mixture. Apply base fertilizer at 6-8g / L to the intermediate mixture to obtain mixture B;

[0032] Step 3. Lay the mixture B on the slope, and evenly spread the soaked plant seeds A on the surface of the mixture B. The sowing amount of the seeds A is 20g / m2 in dry weight 2 , the laying thickness of the mixture B is 10-12cm, and then covered with topsoil (clay), the covering thickness of the fine soil is 0.5-0.8cm, watered thoroughly, in the first month after sowing the plant seeds A, watered The water frequency is once in the morning and once in the evening. After the plant seeds reach a height of 10-15cm, the ecological slope protection substrate is obtained respectively, referred to as 1# substrate.

Embodiment 2

[0034] Step 1. Soak the plant seeds in clear water for 18-24 hours to obtain the plant seeds A to be sown, the plant seeds are Bermudagrass seeds;

[0035] Step 2. Dehydrate and dry the sludge until the water content is below 5%. Mix 5 parts of dredged sludge after drying treatment, 15 cm parts of surface soil and 0.15 parts of water-retaining agent and mix them evenly to form an intermediate mixture. Press 6 in the intermediate mixture. -8g / L is applied base fertilizer, obtains mixture B;

[0036] Step 3. Lay the mixture B on the slope, and evenly spread the soaked plant seeds A on the surface of the mixture B. The sowing amount of the seeds A is 20g / m2 in dry weight 2 , the laying thickness of the mixture B is 10-12cm, and then covered with topsoil (clay), the covering thickness of the fine soil is 0.5-0.8cm, watered thoroughly, in the first month after sowing the plant seeds A, watered The frequency of water is once in the morning and once in the evening. After the plant s...

Embodiment 3

[0038] Step 1. Soak the plant seeds in clear water for 18-24 hours to obtain the plant seeds A to be sown, the plant seeds are Bermudagrass seeds;

[0039] Step 2. Dehydrate and dry the sludge until the water content is less than 5%. Mix 10 parts of dredged sludge, 10 cm parts of topsoil and 0.15 parts of water-retaining agent after drying treatment, and then mix evenly to form an intermediate mixture. Press 6 in the intermediate mixture. -8g / L is applied base fertilizer, obtains mixture B;

[0040] Step 3. Lay the mixture B on the slope, and evenly spread the soaked plant seeds A on the surface of the mixture B. The sowing amount of the seeds A is 20g / m2 in dry weight 2 , the laying thickness of the mixture B is 10-12cm, and then covered with topsoil (clay), the covering thickness of the fine soil is 0.5-0.8cm, watered thoroughly, in the first month after sowing the plant seeds A, watered The water frequency is once in the morning and once in the evening. After the plant see...

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Abstract

The invention discloses a method for preparing an ecological slope protection substrate from dredging silt. The method comprises the steps that 10-15 parts of dried dredging silt, 10-15 parts of surface soil and 0.15 part of a water-retaining agent are prepared first, all the materials are mixed and stirred to be uniform, and then a base fertilizer is applied to obtain a mixture B; the mixture B is laid on the slope surface, and plant seeds A which have been well soaked are uniformly broadcasted on the surface of the mixture B and covered with the surface soil which is clay; thorough wateringis conducted, periodical maintenance is conducted, and after the plant seeds grow to be 10-15 cm high, the ecological slope protection substrate is obtained. By means of the method, the aims of reduction and harmless treatment of existing dredging silt are achieved. The method is simple and reliable, low in production cost and capable of improving the mechanical property of the substrate, the growth of slope protection plants is promoted by using nitrogen, phosphorus and other nutrient substances rich in the silt, and the aim of new recycling of the dredging silt is achieved.

Description

technical field [0001] The invention belongs to the slope ecological slope protection technology, and relates to a slope base material configuration method, in particular to a method for dredging mud to configure the ecological slope protection base material. Background technique [0002] The conventional treatment technology of dredging silt mainly includes (1) throwing a certain amount of silt in a demarcated area in the ocean, and using the degradation and dilution of the ocean itself to realize the harmless treatment of the silt. (2) Fill the silt in the low-lying land, set up a storage yard to pile up the silt, and wait for the water in the silt to evaporate naturally to allow it to consolidate and settle to form land before using it. (3) Apply silt as fertilizer to farmland and orchard. The dredged silt in industrially developed cities often contains a large amount of salts (N, P), organic matter and heavy metal pollutants. Simple disposal and stacking methods will po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20A01G20/00A01G17/00
CPCA01G17/005A01G20/00E02D17/20
Inventor 万娟夏军肖衡林刘永莉杨智勇马强李丽华刘佳瑞赵宏博
Owner HUBEI UNIV OF TECH
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