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Constructed wetland construction method for comprehensive control of agricultural production non-point source pollution

A technology for artificial wetlands and non-point source pollution, applied in biological water/sewage treatment, agriculture, polluted waterway/lake/pond/river treatment, etc. Achieve the effect of increasing product value, obvious technical advantages, and solving the problem of non-point source pollution

Active Publication Date: 2020-12-15
马鞍山市华越水生态环境有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Paddy fields are one of the most important constructed wetlands. The currently popularized ecological circulation farming models such as rice crab, rice shrimp, and rice fish adopt the characteristics of constructed wetlands. It solves the problem of not applying chemical fertilizers and spraying pesticides during the growth of rice. However, the biggest defect of rice fields as artificial wetlands is that they only have the function of wetlands for three months in a year, and the ecological circulation farming models such as rice crab, rice shrimp, and rice fish also bring a large amount of aquaculture wastewater to the external environment throughout the year. The farming method cannot comprehensively and effectively solve the non-point source pollution of agricultural production

Method used

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  • Constructed wetland construction method for comprehensive control of agricultural production non-point source pollution
  • Constructed wetland construction method for comprehensive control of agricultural production non-point source pollution
  • Constructed wetland construction method for comprehensive control of agricultural production non-point source pollution

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Experimental program
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Effect test

Embodiment 1

[0030] From figure 1 and figure 2 It can be seen that in this embodiment, a method for constructing a constructed wetland for comprehensive control of agricultural production non-point source pollution, step 1: divide the rice planting area into several constructed wetlands according to the characteristics of the terrain, the flow direction of the outer river, and the pollution of the water environment The modules are separated by a dam 1, each module has an area of ​​15 mu to 25 mu, and the water inlet 2 and the water outlet 3 are opened on one side of the dam 1, and the water inlet 2 and the water outlet 3 are connected in series or in parallel with PVC pipes connected to the outer channel;

[0031] Step 2: Dig a return canal around the constructed wetland module. The bottom of the return canal is 2-3 meters wide, the depth is 1-1.5 meters, and the slope ratio is 1:1.2-1.5. Microorganisms are carried out in the return canal. Bottom improvement, microbial bottom improvemen...

Embodiment 2

[0044] The steps of the constructed wetland construction method for comprehensive control of non-point source pollution in agricultural production in this embodiment are the same as those in Embodiment 1.

[0045] This example is a 25-acre man-made wetland module construction method. After the rice is harvested in November, excavation and construction of back-shaped canals will be started, including: digging back-shaped canals with a bottom width of 2 meters, a depth of 1 meter, and a slope ratio of 1:1.2; Build a dam on the outside of the back-shaped canal, with a height of 0.8 meters, a width of 1.5 meters, and a slope ratio of 1:1.2; build a field ridge: build a field ridge with a height of 0.2 meters and a width of 0.5 meters at the junction of the rice field and the back-shaped canal; Construction of mechanical plowing road: In order to facilitate the tiller and harvester to go to the field, a 3.5-meter-wide machine-plowing road is built on the back-shaped canal. The diame...

Embodiment 3

[0051] The steps of the constructed wetland construction method for comprehensive control of non-point source pollution in agricultural production in this embodiment are the same as those in Embodiment 1.

[0052] This embodiment is a modular construction of 135 mu of artificial wetland. According to the characteristics of terrain height and irrigation water direction, the rice planting area is divided into 6 artificial wetland modules. The area of ​​each module is 15 mu, 18 mu, 23 mu, 24 mu, 25 acres and 25 acres, a total of 130 acres; the modules are separated by a dam with a width of 1.5 meters and a 4-meter-wide mechanical farming road in the middle. The dam and mechanical farming road occupy an area of ​​about 5 acres; The surface water is inferior to Grade V water quality, so in this example, the area of ​​the rice planting area is increased, that is, more wetland modules of more than 20 mu are selected, and the total area of ​​the return-type water ecosystem is 24.6 mu, ...

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Abstract

The invention discloses a constructing method for a constructed wetland for comprehensively treating non-point pollution in agricultural production and belongs to the technical fields of rural water ecological environment treatment technologies and agricultural green ecological production. The constructing method disclosed by the invention comprises the steps: step 1, dividing a rice planting areainto a plurality of constructed wetland modules, wherein the size of each module is 15 acres to 25 acres; step 2, digging a ditch in a shape like a Chinese character hui on the internal periphery ofeach constructed wetland module, constructing a clean water state water ecological environment system in the ditch in the shape like the Chinese character hui, performing microorganism bottom modification, planting submerged plants and feeding aquatic animals. The constructing method disclosed by the invention can achieve seamless joint between rural water ecological environment treatment and agricultural production; the constructed wetland ecological system can purify water quality for a long time and can keep a clean water state of a water body all the year around; water quality of drained water can reach earth's surface III type, a certain amount of external-source polluted water can be treated, harvested rice, fish, shrimps and crabs are all high-quality original ecological food, and straw is ecologically returned to field.

Description

technical field [0001] The invention relates to the technical field of rural water ecological environment treatment and the technical field of agricultural green ecological production, and more specifically relates to a method for constructing an artificial wetland for comprehensive treatment of non-point source pollution in agricultural production. Background technique [0002] The pesticides, fertilizers and straw used in the planting industry in agricultural production and the organic-rich wastewater produced by the breeding industry are the root causes of non-point source pollution in agricultural production and the main reason for the serious damage to the rural water ecological environment. At present, the country is vigorously promoting the green development of agriculture, requiring changes in agricultural development methods, protecting the environment of production areas, improving ecological service functions, and building a new pattern of agricultural development ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34A01G22/22A01G22/00A01K61/10A01K61/59
CPCA01K61/10A01K61/59C02F3/32C02F3/325C02F3/327C02F3/34C02F2103/007C02F2203/006Y02A40/81
Inventor 鲁国强卢元清陈财宗
Owner 马鞍山市华越水生态环境有限公司
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