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Three-level prevention and control method of non-point source pollution in natural villages on lake island shore

A non-point source pollution and natural technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effect of increasing beautiful environment, good sanitary conditions and low operating costs

Inactive Publication Date: 2015-08-05
SUZHOU POLYTECHNIC INST OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The population is scattered and the area is large. The discharge of nitrogen and phosphorus pollution sources from farmland, breeding, and villages and towns has the characteristics of wide area, dispersion, difficulty in centralized collection, good biochemical properties, and discharge to nearby lakes. At the same time, due to the current rural situation, sewage treatment projects must be Only with low investment, low energy consumption, low operating cost, and simple maintenance can it be better promoted. Rural sewage treatment is relatively difficult, and it is still in its infancy and exploration stage in my country.
The existing sewage treatment technology is used for rural sewage treatment, but there are still many practical problems in operation and management, and it is difficult to meet the requirements of rural domestic sewage treatment

Method used

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  • Three-level prevention and control method of non-point source pollution in natural villages on lake island shore
  • Three-level prevention and control method of non-point source pollution in natural villages on lake island shore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Experiment on control of non-point source pollution in a village on an island

[0031] In the non-point source pollution control test of an island shore village, two groups were divided into two groups to carry out the test, and the first group implemented the mode of the present invention, that is, the non-point source pollution adopts natural ecological compound ditch-artificial ecological interception ditch-near shore discharge point shallow water area The three-level control mode of planting, its specific implementation is as follows:

[0032] The domestic sewage of residents flows into the existing natural ditches in the village, and one or more of aquatic plants such as reeds, wild rice grass, cattails, and hornworts are planted in the ditches; after that, they enter the artificial ecological interception ditches from the natural ditches, and there are 8 parallel ditches in total. It is composed of ditches, whose walls are composed of porous cement bricks spaced i...

Embodiment 2

[0036] Demonstration project of non-point source pollution control in an island shore village

[0037] In the non-point source pollution control demonstration project of an island shore village, two groups were divided into two groups to carry out the test, and the first group implemented the mode of the present invention, that is, the non-point source pollution adopts natural ecological compound ditch-artificial ecological interception ditch-near shore discharge point shallow water The three-level control mode of regional planting, its specific implementation is as follows:

[0038] The domestic sewage of residents flows into the existing natural ditches in the village, and one or more of aquatic plants such as reeds, wild rice grass, cattails, and hornworts are planted in the ditches; after that, they enter the artificial ecological interception ditches from the natural ditches, and there are 8 parallel ditches in total. It is composed of ditches, whose walls are composed of...

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Abstract

The invention discloses a three-level prevention and control method of non-point source pollution in natural villages on a lake island shore. The method comprises the following steps of 1, first-level prevention and control: investigating pollution source discharge points, building a single tandem ditch by known natural ditches in the village, and planting aquatic plants in the single tandem ditch to obtain a naturally ecological composite ditch for collecting non-point source sewage, 2, second-level prevention and control: aggregating and feeding the non-point source sewage treated by the first-level prevention and control into an artificial ecological interception ditch, wherein the artificial ecological interception ditch comprises multiple parallel ditches communicated with the single tandem ditch, arranging ecological interception dams at the bottoms of the parallel ditches at intervals and simultaneously, planting emergent aquatic plants on two side ditch walls of each one of the parallel ditches, and 3, three-level prevention and control: planting emergent aquatic plants in a nearshore discharge point phytal zone of the parallel ditches.

Description

Technical field: [0001] The invention relates to a three-stage prevention and control method for controlling non-point source pollution in natural villages on lakes, islands and shores, and belongs to the field of non-point source pollution prevention and control. Background technique: [0002] From an international point of view, countries such as Europe and the United States mostly use fallow and no-tillage, buffer zones and large-scale wetlands to carry out ecological purification for domestic and non-point source pollution control. Japan mostly uses household ecological purification tanks, advanced treatment and organic farms to carry out pollution control. Taking advantage of willow's characteristics of resistance to water and humidity, fast growth, large biomass, and high nutrient consumption, through the cultivation of willow to absorb and utilize nutrients in water, turning waste into treasure, killing two birds with one stone, Sweden, the United Kingdom and other c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 马国胜于淼李振陆邹洪辉
Owner SUZHOU POLYTECHNIC INST OF AGRI
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