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Special high-nitrogen water fertilizer for planting paulownia in ecological restoration of abandoned mines as well as preparation method and spraying method thereof

A technology of ecological restoration and paulownia, applied in fertilization methods, sewage/sludge fertilizers, applications, etc., can solve problems such as leachate resources, improve the soil environment, ensure efficient ecological restoration effects, and promote fast growth and high yields

Active Publication Date: 2019-11-01
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention adapts measures to local conditions, and at the same time solves the problem of resource utilization of related leachate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of preparation method of the special high-nitrogen water fertilizer for paulownia planting in the ecological restoration of an abandoned mine according to the present embodiment, the method specifically includes the following steps:

[0048] (1) Use the leachate produced in the landfill process of the abandoned mine pit restoration matrix to produce Paulownia special water and fertilizer. The leachate COD is 26845mg / L, BOD is 19947mg / L, ammonia nitrogen concentration is 6765mg / L, and pH value is 7.91.

[0049] (2) Add 1000kg of leachate to the anaerobic fermentation tank, control the temperature of the reaction solution at 30°C, add 1kg of special anaerobic complex bacteria, 200kg of anaerobic activated sludge, stir at a low speed to prevent sludge precipitation, seal the fermentation for 24 hours, and stop stirring , to settle for 1 hour. Extract the clarified fermented liquid from the upper layer and add it to the aerobic fermentation tank, control the temperat...

Embodiment 2

[0052] A kind of preparation method of the special high-nitrogen water fertilizer for paulownia planting in the ecological restoration of an abandoned mine according to the present embodiment, the method specifically includes the following steps:

[0053] (1) Use the leachate produced in the landfill process of the abandoned mine pit repair matrix to produce Paulownia special water and fertilizer. The leachate COD is 27843mg / L, BOD is 20032mg / L, ammonia nitrogen concentration is 6843mg / L, and the pH value is 7.82.

[0054] (2) Add 1000kg of leachate to the anaerobic fermentation tank, control the temperature of the reaction solution at 30°C, add 1kg of special anaerobic complex bacteria, 200kg of anaerobic activated sludge, stir at a low speed to prevent sludge precipitation, seal the fermentation for 24 hours, and stop stirring , to settle for 1 hour. Extract the clarified fermented liquid from the upper layer and add it to the aerobic fermentation tank, control the temperatu...

Embodiment 3

[0057] A kind of preparation method of the special high-nitrogen water fertilizer for paulownia planting in the ecological restoration of an abandoned mine according to the present embodiment, the method specifically includes the following steps:

[0058] (1) Use the leachate produced in the landfill process of the abandoned mine pit repair matrix to produce Paulownia special water and fertilizer. The leachate COD is 29739mg / L, BOD is 21765mg / L, ammonia nitrogen concentration is 7861mg / L, and the pH value is 8.01.

[0059] (2) Add 1000kg of leachate to the anaerobic fermentation tank, control the temperature of the reaction solution at 30°C, add 1kg of special anaerobic complex bacteria, 200kg of anaerobic activated sludge, stir at a low speed to prevent sludge precipitation, seal the fermentation for 24 hours, and stop stirring , to settle for 1 hour. Extract the clarified fermented liquid from the upper layer and add it to the aerobic fermentation tank, control the temperatu...

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Abstract

The invention provides a special high-nitrogen water fertilizer for planting paulownia in ecological restoration of abandoned mines as well as preparation method and spraying method thereof. A controllable fermentation process is used for treating leachate, and the leachate is subjected to anaerobic fermentation and then aerobic fermentation and nitrification process treatment; firstly, organic matters in the leachate are degraded to the required level of the water fertilizer, and secondly, a large amount of ammonia nitrogen in the leachate is biologically converted into nitrate nitrogen required by paulownia growth; then, suspended solids are removed through sedimentation and quartz sand filtration, and finally the high-nitrogen water fertilizer is obtained and used for a paulownia nursery and an annual demonstration forest of the paulownia nursery obtained after tissue culture seedlings are subjected to water and fertilizer integrated spraying and seedling hardening. According to theinvention, resource utilization of the leachate is fully realized, hidden danger of secondary pollution is eliminated, and waste is turned into wealth. The method for preparing the special water fertilizer for paulownia planting in waste mine ecological restoration is low in cost, sufficient and effective nutrient supply can be provided, the utilization efficiency of the water fertilizer is greatly improved, fast growth and high yield of paulownia are promoted, and the yield increase rate of paulownia is ensured.

Description

technical field [0001] The invention relates to the technical field of fertilizer preparation, in particular to a special high-nitrogen water fertilizer for Paulownia planting in the ecological restoration of abandoned mines, a preparation method and a spraying method thereof. Background technique [0002] Paulownia is a fast-growing and high-yielding tree species unique to China. It can be used as a material for construction, furniture, ecological boards, musical instruments, etc. in five years. Its leaves, flowers, fruits, and bark can be used as medicine. The fruit is pleasing to the eye, and has the ability to quickly absorb carbon and purify the air to resist pollution. It is a good choice as a greening tree species for the restoration of urban streets and abandoned mining areas. The application of ordinary fertilizers on the market can not exert the greatest effect on the growth of Paulownia, so that it can achieve the optimal growth effect. Therefore, local materials ...

Claims

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Application Information

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IPC IPC(8): C05F15/00A01C21/00
CPCA01C21/005C05F7/00
Inventor 桂厚瑛宁静何超林善明周秋名尹传件
Owner WUHAN UNIV OF TECH
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