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A method of ecological restoration in arid mining areas by recycling and reusing domestic sewage

A technology for domestic sewage and ecological restoration, applied in application, cultivation, agriculture, etc., can solve the problems of high cost of domestic water and achieve the effect of low difficulty in implementation

Active Publication Date: 2020-06-09
XINJIANG ACADEMY OF FORESTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, it is one of the most economical and feasible ways to select tree species with strong stress resistance, salt-alkali tolerance, and large growth for artificial afforestation to realize ecological restoration in arid mining areas. Economical and effective afforestation has always been a difficult problem in production practice and scientific research; on the other hand, there is a severe water shortage in arid mining areas, and the cost of domestic water is relatively high, so rational use of domestic sewage for forest land irrigation is another technical problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Utilize the method for the recovery and reuse of domestic sewage to realize the ecological restoration of arid mining area, which comprises the following steps:

[0018] Step 1. Recycling domestic sewage in the mining area: install a domestic sewage recycling device in the mining area, and use the sewage treated by the sewage recycling device as irrigation water;

[0019] Step 2. Selection of tree species for ecological restoration: select Haloxylon, Azalea, and Tamarix, which are highly resistant to stress in arid areas, as tree species for restoration;

[0020] Step 3. Selection of ecological restoration area: Select a sandy land that is convenient for installing drip irrigation facilities. It is required that the gravel content (particles > 2 mm) ≤ 10%, and the sand content (0.02-2 mm) ≥ 85%.

[0021] Step 4. Plant Haloxylon, Shaguai jujube, and Tamarix in the ecological restoration area;

[0022] Step 5, replanting: after 5-8 days of afforestation, ch...

Embodiment 2

[0034] Embodiment 2: Utilize the method for the recovery and reuse of domestic sewage to realize the ecological restoration of arid mining area, carry out according to the following steps:

[0035] Step 1. Install domestic sewage recovery and reuse devices in the mining area, requiring the treated sewage to reach the limit value of ornamental landscape environmental water in the national standard "Urban Sewage Recycling Landscape Environmental Water Quality" (GB / T18921-2002);

[0036] Step 2, the selection of tree species for ecological restoration, select Haloxylon, which has strong stress resistance in arid areas, as the restoration tree species;

[0037] Requirements for propagule vitality, the germination rate of Haloxylon seeds is greater than 80%;

[0038] Propagate storage requirements, Haloxylon seeds require a temperature of 0~5°C, humidity <30%, and should be stored in cloth bags;

[0039] Step 3. Selection of ecological restoration area. Select sandy land that is c...

Embodiment 3

[0045] Embodiment 3: Utilize domestic sewage to recycle and reuse the method for realizing the ecological restoration of arid mining area, carry out according to the following steps: Step 1, install domestic sewage recycling and reuse device in mining area, require sewage to reach national standard after treatment " city sewage recycling The limit value of ornamental landscape environmental water in "Water Quality for Landscape Environment" (GB / T18921-2002);

[0046] Step 2. The selection of tree species for ecological restoration. Select Azalea with strong stress resistance in arid areas as the restoration tree species; the requirements for propagule vitality, the germination rate of Azalea seeds is greater than 80%; the requirements for propagule storage, the requirements for Azalea seeds Temperature 0~5℃, humidity <30%, store in cloth bags;

[0047]Step 3. Selection of ecological restoration area. Select sandy land that is convenient for installing drip irrigation facilitie...

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Abstract

The invention relates to a method for arid mining area ecological restoration through domestic wastewater recycling. Mining area domestic wastewater is recycled and processed, proper ecological restoration tree species and an ecological restoration area are selected, and sacsaoul, calligonum mongolicum and tamarix chinensis are planted and supplemented in the ecological restoration area to form a forest; irrigation is conducted after afforestation, mining area tap water or river water is adopted for irrigation in the first year, and processed domestic wastewater is used for irrigation after plants grow stably in the second year. By means of the method, the arid mining area domestic water can be recycled, and the aim of sustainable and stable development of an arid mining area fragile ecological system is achieved through the combination of the planting of drought-enduring plants which easily survive and the early-period reasonable planting.

Description

technical field [0001] The invention relates to the technical field of ecological restoration in arid mining areas, in particular to a method for realizing ecological restoration in arid mining areas by recycling and reusing domestic sewage. Background technique [0002] my country is rich in mineral resources. With the construction of the national economy, the mining and utilization of mineral resources continue to increase. Mineral resources have made great contributions to economic development and social construction, but at the same time they have caused a series of environmental problems in mining areas, such as vegetation degradation. , surface subsidence, accumulation of gangue, reduction of river runoff, depletion of groundwater resources, and decline in farmland productivity have become increasingly prominent, seriously damaging the original ecosystem. [0003] The physical and chemical properties of soil in arid mining areas are poor, such as drought, poor soil stru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00
CPCA01G17/005
Inventor 程平李宏宋薇韩政伟张齐武赵泽巴合提·牙尔早日古·吐逊江
Owner XINJIANG ACADEMY OF FORESTRY SCI