Small-watershed water body non-point source pollution recovery and control system and construction method thereof

A non-point source pollution, small watershed technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. problems, to achieve the effect of purifying water quality and good economic benefits

Inactive Publication Date: 2018-09-21
HUNAN TAIGU BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The COD, total N, and total P of organic matter produced by rural non-point sources are the main sources of pollutant load, and rural domestic sewage, rural solid waste, farmland pesticides and fertilizers, soil erosion and storm runoff are the main non-point source pollution, and the non-point source pollution load Large fluctuations, scattered pollution, leading to difficulties in governance

Method used

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  • Small-watershed water body non-point source pollution recovery and control system and construction method thereof

Examples

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Effect test

Embodiment 1

[0034] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field.

[0035] Example 1 The control experiment of COD, TN, TP by the surface source pollution restoration control system of small watershed water body

[0036] Select a small watershed in Dongting Lake District, Hunan Province, with a watershed area of ​​23.8km 2 , according to the following steps to build a small watershed non-point source pollution restoration control system:

[0037] (1) Select a site to build a dam. According to the measurement of the pollution of the entire watershed, determine a suitable interception point in the concentrated area where the water quality reaches V class or above; Water outlets are set on the side and in the middle, and gates are ...

Embodiment 2

[0044] Example 2 Control experiment of COD, TN, TP by the non-point source pollution restoration and control system of small watershed water

[0045] Select a small watershed in Dongting Lake District, Hunan Province, with a watershed area of ​​12.6km 2 , according to the following steps to build a small watershed non-point source pollution restoration control system:

[0046] (1) Select a site to build a dam, and determine the appropriate interception point according to the pollution situation of the entire watershed;

[0047] (2) Reconstruction of farmland and rivers, transforming farmland and rivers into sedimentation ponds, planting ponds and artificial wetlands, the depth of sedimentation ponds is 0.5m, the depth of planting ponds is 1.2m, the depth of artificial wetlands is 0.5m, and the thickness of biochar at the bottom of each pond is 5cm ;

[0048] (3) Animal and plant breeding, plant Gorgon fruit in the sedimentation pond, Xianglian in the planting pond, 3000 carp...

Embodiment 3

[0052] Example 3 Control experiment of COD, TN and TP by the non-point source pollution restoration and control system of small watershed water

[0053] Select a small watershed in the Dongting Lake area of ​​Hunan Province, with a watershed area of ​​28.4km2 , according to the following steps to build a small watershed non-point source pollution restoration control system:

[0054] (1) Select a site to build a dam, and determine the appropriate interception point according to the pollution situation of the entire watershed;

[0055] (2) Reconstruction of farmland and rivers, transforming farmland and rivers into sedimentation ponds, planting ponds and artificial wetlands, the depth of sedimentation ponds is 0.8m, the depth of planting ponds is 1.5m, the depth of artificial wetlands is 0.5m, and the thickness of biochar at the bottom of each pond is 5cm ;

[0056] (3) Animal and plant breeding, plant Gorgon fruit in the sedimentation pond, Xianglian in the planting pond, 3000...

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Abstract

The invention provides a small-watershed water body non-point source pollution recovery and control system and a construction method thereof. The small-watershed water body non-point source pollutionrecovery and control system comprises a water retaining dam for intercepting divided river water, a silt sedimentation pond for settling silt in the river water, a planting and breeding pond for purifying the water and obtaining economic benefits, and a constructed wetland. The water retaining dam is used for intercepting the divided water flow, the silt sedimentation pond, the planting and breeding pond and the constructed wetland are arranged in the water flow direction in sequence, aquatic plants are planted in the planting and breeding pond, and/or aquatic animals are bred in the plantingand breeding pond. According to the rural small-watershed water body non-point source pollution recovery and control system, through overall planning, a planting structure is adjusted; through physical, chemical and biological treatment, the hazards of pollutants to the environment are removed, nutrient substance in the pollutants is fully utilized, economic benefits are obtained, and an all-win effect is achieved.

Description

technical field [0001] The invention belongs to the field of river engineering, and in particular relates to a treatment method for water bodies in small watersheds. Background technique [0002] Rural non-point source pollution refers to dissolved or solid pollutants in rural life and agricultural production activities, such as organic or inorganic substances such as soil particles, nitrogen, phosphorus, pesticide heavy metals, rural poultry manure and domestic garbage in farmland , from a non-specific area, under the action of precipitation and runoff erosion, through farmland surface runoff, farmland drainage and underground seepage, a large amount of pollutants enter the receiving water body (rivers, lakes, reservoirs, bays) caused by pollution. The COD, total N, and total P of organic matter produced by rural non-point sources are the main sources of pollutant load, and rural domestic sewage, rural solid waste, farmland pesticides and fertilizers, soil erosion and storm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCC02F1/001C02F3/327C02F2001/007C02F2103/007
Inventor 文亚雄谭石勇谭武贵刘备郭帅张冬雪
Owner HUNAN TAIGU BIOTECH
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