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Method for prevention and control of non-point source pollution and cyclic utilization of resources of tea garden and system thereof

A non-point source pollution, prevention and control technology, applied in chemical instruments and methods, applications, biological water/sewage treatment, etc., can solve the problems of polluted tea garden resources, recycling and other problems, and achieve clear positioning, simple process, and reduce fertilizer input. Effect

Active Publication Date: 2013-05-22
江苏省环境工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a tea garden non-point source pollution prevention and control and resource recycling system to solve the problems of tea garden non-point source pollution prevention and control and tea garden resource recycling

Method used

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  • Method for prevention and control of non-point source pollution and cyclic utilization of resources of tea garden and system thereof
  • Method for prevention and control of non-point source pollution and cyclic utilization of resources of tea garden and system thereof
  • Method for prevention and control of non-point source pollution and cyclic utilization of resources of tea garden and system thereof

Examples

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Effect test

Embodiment 1

[0029] Choose a steep slope of 15° as the site for planting tea gardens, and set up terraced fields on the steep slope. The horizontal distance between the longitudinal ditches is 1m, horizontal ditches are arranged perpendicular to the direction of the vertical ditches on the terraces, the vertical distance between two adjacent horizontal ditches is 2.5m, and main ditches are set at the boundaries around the steep slopes. The longitudinal ditch is connected with the horizontal main ditch, and the horizontal ditch is connected with the vertical main ditch; the longitudinal ditch is 45cm deep, 35cm wide, the horizontal ditch is 35cm deep, and 25m wide, the main ditch is 55cm deep, 55cm wide, and the vertical ditch is 10cm deeper than the horizontal ditch. After this setting, the nutrient loss rate is reduced by 2%, the runoff production is reduced by 6%, and the TN emission from farmland is reduced by 6%.

Embodiment 2

[0031] Choose a steep slope of 30° as the site for planting tea gardens, and set up terraced fields on the steep slope. The horizontal distance between the longitudinal ditches is 2.5m, horizontal ditches are arranged perpendicular to the direction of the longitudinal ditches on the terraces, the vertical distance between two adjacent horizontal ditches is 4m, and main ditches are set at the boundaries around the steep slopes. The longitudinal ditch is connected with the horizontal main ditch, and the horizontal ditch is connected with the longitudinal main ditch; the longitudinal ditch is 60cm deep, 55cm wide, the horizontal ditch is 50cm deep, and 35cm wide, the main ditch is 90cm deep, 80cm wide, and the vertical ditch is 10cm deeper than the horizontal ditch. After this setting, the nutrient loss rate is reduced by 2%, the runoff production is reduced by 6%, and the TN emission from farmland is reduced by 8%.

Embodiment 3

[0033] Choose a steep slope of 18° as the site for planting tea gardens, and set up terraced fields on the steep slope. The horizontal distance between the longitudinal ditches is 2.5m, horizontal ditches are arranged perpendicular to the direction of the longitudinal ditches on the terraces, the vertical distance between two adjacent horizontal ditches is 4m, and main ditches are set at the boundaries around the steep slopes. The longitudinal ditch is connected with the horizontal main ditch, and the horizontal ditch is connected with the vertical main ditch; the longitudinal ditch is 65cm deep, 55cm wide, the horizontal ditch is 58cm deep, and 38cm wide, the main ditch is 92cm deep, 82cm wide, and the vertical ditch is 12cm deeper than the horizontal ditch. This setting reduces the nutrient loss rate (the ratio of loss to fertilizer and organic fertilizer input) in tea gardens by 3%, reduces runoff generation by 8%, and reduces TN emissions from fields by 10%.

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Abstract

The invention discloses a method for prevention and control of non-point source pollution and cyclic utilization of resources of a tea garden. A system mainly consists of a source reduction system, a pollution process reduction system, a pollution end control system and a resource cyclic utilization system, wherein the source reduction system is used for reducing pollution of the tea garden and is provided with irrigation canals and ditches, and base fertilizers are used in the source reduction system; the pollution process reduction system is provided with trunk canals and interception permeable dikes; the pollution end control system is provided with buffer regions and ecological regions; and in the resource cyclic utilization system, plants in the ecological regions are raw materials for preparing the base fertilizers. According to the method and the system, by configuring longitudinal furrows and transverse furrows in the tea garden at a sloping field and preparing and using the base fertilizers, the pollution is reduced at source; the trunk canals are provided with the interception permeable dikes to intercept pollution, the buffer regions and the ecological regions are arranged, and the pollution is controlled at the end; and wastes in the tea garden are subjected to resource utilization to prepare the base fertilizers, so that aiming at slope runoff of low-pollution water in the tea garden, a non-point source prevention and control method for source reduction, process reduction, end control and cyclic utilization for the tea garden is formed by utilizing a resource cyclic utilization manner.

Description

technical field [0001] The invention belongs to the technical field of pollution prevention and control, and specifically relates to a tea garden non-point source pollution prevention and control method and resource recycling method and system thereof. Background technique [0002] Non-point source pollution is one of the important causes of water eutrophication. Non-point source pollution in the United States accounts for 2 / 3 of the total pollution, of which agriculture contributes 75%. In my country, the proportion of non-point source pollution in Chaohu Lake in Anhui and Dianshan Lake in Shanghai exceeds that of point source pollution. A large number of research data show that the inflow of non-point source nitrogen and phosphorus into water bodies is mainly through surface runoff caused by rainfall, and the resulting soil erosion and loss of nitrogen, phosphorus and other nutrients not only lead to the degradation of soil quality, but also are an important cause of agric...

Claims

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Application Information

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IPC IPC(8): C02F3/32E02B11/00E02B7/06
Inventor 边博吴海锁李冰范亚民常闻捷
Owner 江苏省环境工程技术有限公司
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