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Ditch-pond integrated system for controlling agricultural non-point source pollution and purifying river water and application method thereof

An integrated system and technology of ditches and ponds, applied in the field of water pollution control, can solve problems such as inability to efficiently purify polluted river water, and achieve the effect of ensuring ecological stability and high treatment efficiency

Inactive Publication Date: 2017-08-18
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current ditch and pond system cannot efficiently purify polluted river water while controlling agricultural non-point source pollution.

Method used

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  • Ditch-pond integrated system for controlling agricultural non-point source pollution and purifying river water and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]When the farmland water flow is sufficient, the ditch pond system is operated in this way, and the steps are:

[0043] Agricultural sewage collection and treatment: Agricultural sewage 1 enters the sedimentation pond through the ecological ditch, and the trash grid in front of the sedimentation pond intercepts floating garbage and large particles of debris. 2 The lotus or planting density is 30 plants / m 2 Nymphaeum) retains suspended solids and sediment in sewage, and floating leaf plant 3 and floating leaf plant root microorganisms can absorb part of nutrients and remove part of N, P, COD Mn , ammonia nitrogen. The water from the sedimentation pond flows into the oxidation pond by itself, and a large number of submerged plants 4 are planted in the oxidation pond (the planting density is 12 plants / m 2 Hydrilla verticillium or planting density is 32 plants / m 2 bitter grass) and emergent plants 5 (planting density is 36 plants / m 2 The reed or planting density is 36 pla...

Embodiment 2

[0045] When the amount of water is insufficient, use this method to operate the ditch and pond system, and the steps are:

[0046] Agricultural sewage collection and treatment: Agricultural sewage 1 enters the sedimentation pond through the ecological ditch, and the trash grid in front of the sedimentation pond intercepts floating garbage and large particles of debris. In addition, river sewage is pumped into the sedimentation pond, and the trash grid in front of the sedimentation pond intercepts floating garbage and large particles of debris. The sedimentation pond consists of a large number of floating leaf plants 3 (the planting density is 2 plants / m 2 The lotus or planting density is 25 plants / m 2 Nymphaeum) retains suspended solids and sediment in sewage, and floating leaf plant 3 and floating leaf plant root microorganisms can absorb part of nutrients and remove part of N, P, COD Mn , ammonia nitrogen. The water from the sedimentation pond flows into the oxidation pon...

Embodiment 3

[0048] During the drought period, the steps to operate the ditch and pond system in this way are:

[0049] Agricultural sewage collection and treatment: river sewage is pumped into the sedimentation pond, and the trash grid in front of the sedimentation pond intercepts floating garbage and large particles of debris. The sedimentation pond consists of a large number of floating leaf plants 3 (the planting density is 1 plant / m 2 The lotus or planting density is 20 plants / m 2 Nymphaeum) retains suspended solids and sediment in sewage, and floating leaf plant 3 and floating leaf plant root microorganisms can absorb part of nutrients and remove part of N, P, COD Mn , ammonia nitrogen. The water from the sedimentation pond flows into the oxidation pond by itself, and a large number of submerged plants 4 are planted in the oxidation pond (the planting density is 15 plants / m 2 Hydrilla verticillium or the planting density is 30 plants / m 2 bitter grass) and 5 emergent plants (the p...

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Abstract

The invention relates to a ditch-pond integrated system for controlling agricultural non-point source pollution and purifying river water and an application method thereof, and belongs to the technical field of water pollution controlling. The integrated system comprises an ecological ditch, a precipitating pond, an oxidation pond, a stabilization pond and a river, wherein the water inlet of the precipitating pond is connected with the water outlet of the ecological ditch and the water outlet of the river respectively, the water outlet of the precipitating pond is connected with the water inlet of the oxidation pond; and the water outlet of the oxidation pond is connected with the water inlet of the stabilization pond while the water outlet of the stabilization pond is connected with the water inlet of the river and farmland respectively. The integrated system makes full use of the purifying function of the ditch-pond integrated system, and meanwhile guarantees the ecological stability of the ditch-pond system; the integrated system ha high treatment efficiency.

Description

technical field [0001] The invention relates to the technical field of water pollution control, in particular to a ditch-pond integrated system for controlling agricultural non-point source pollution and purifying river water and a use method thereof. Background technique [0002] Farmland non-point source pollution mainly refers to the water environment pollution caused by the large amount of nitrogen and phosphorus entering the water body through farmland surface runoff, farmland drainage and underground seepage during the precipitation or irrigation process of farmland pesticides and nutrients such as nitrogen and phosphorus in agricultural production activities. . The eutrophication of water bodies caused by the loss of farmland non-point source pollution also restricts the safety of regional food production. [0003] In addition, with the process of urbanization in my country and the intensification of water pollution, river pollution is on the verge of serious environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCC02F3/32C02F2301/08Y02W10/10
Inventor 方涛鲍少攀唐巍
Owner INST OF AQUATIC LIFE ACAD SINICA
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