Riverway water quality purification and ecosystem restoration adjustable wetland technology

An ecological restoration and water purification technology, applied in the field of river water purification, can solve problems such as contradictions in the requirements of river flood control functions, and achieve the effects of maintaining water temperature, restoring river ecology, and improving water quality.

Inactive Publication Date: 2009-11-11
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem existing in the existing river ecological restoration technology and the river flood control function requirements, the present invention provides a river water quality purification and ecological restoration adjustable wetland technology, which can not only realize the effective purification of the river water quality, but also ensure the Normal flood discharge of river course in flood season

Method used

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  • Riverway water quality purification and ecosystem restoration adjustable wetland technology
  • Riverway water quality purification and ecosystem restoration adjustable wetland technology
  • Riverway water quality purification and ecosystem restoration adjustable wetland technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Construct a water storage 1.5 million m 2 km downstream of the Yi River 3 River-stopping rubber dam with a water surface area of ​​500,000 m 2 , forming an artificial lake. The total area of ​​construction in the upstream of the rubber dam is 200,000 m 2 Constructed wetlands, plant silk leaf eye vegetables, planting density 20 clumps / m 2 (4 plants / clump). In the flat water season (April-June and September-November), when the hydraulic retention time of the constructed wetland is adjusted for 7-10 days, the average COD content of the wetland inlet is 38.7mg / L, and the average COD content of the wetland outlet is 13.3mg / L. The rate can reach 65.6%. In the dry season (December to March of the following year), when the hydraulic retention time of the constructed wetland is adjusted to 35-45 days, the average COD content of the wetland inlet is 67.7mg / L, and the average COD content of the wetland outlet is 17.1mg / L. Up to 74.7%. It has reached the Class III water qu...

Embodiment 2

[0032] Build a water storage facility with a capacity of 1 million m 1 km downstream of the Dasha River 3 River-stopping rubber dam with a water surface area of ​​320,000 m 2 , forming an artificial lake. The total area of ​​construction in the upstream of the rubber dam is 150,000 m 2 Constructed wetlands, planting silk leaf eye vegetables, the planting density is 25 clumps / m 2 (4 plants / clump). In the flat water season (April-June and September-November), when the hydraulic retention time of the constructed wetland is adjusted for 8-10 days, the average COD content of the wetland inlet is 37.1mg / L, and the average COD content of the wetland outlet is 15.3mg / L. COD removal The rate can reach 58.8%. In the dry season (December to March of the following year), when the hydraulic retention time of the constructed wetland is adjusted to 35-50 days, the average COD content of the wetland inlet is 65.4mg / L, and the average COD content of the wetland outlet is 16.6mg / L. Up to 7...

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Abstract

The invention provides riverway water quality purification and ecosystem restoration adjustable wetland technology, which comprises that: a rubber dam with adjustable height is arranged in a riverway; potamogeton plants are planted at the upstream of the rubber dam of the riverway to form artificial wetland; the planting density of the potamogeton plants is between 20 and 30 clusters / m, and a cluster is between 3 and 4 plants; the retention and purification time of river water in the artificial wetland is adjusted by adjusting the height of the rubber dam, the height of the rubber dam is improved in normal and dry seasons to store water to make the water level at the upstream of the rubber dam of the riverway improved, and the adjusting height of the rubber dam is determined by the COD concentration of the river water at the inlet of the artificial wetland and the temperature of the river water. By planting the potamogeton plants in the riverway to form the wetland, instead of lifting the water onto land to construct an artificial wetland, the technology can more directly and effectively restore the damaged riverway ecosystem, improve the water quality of polluted river water, and can ensure normal flood discharge of the riverway in flood season.

Description

technical field [0001] The invention relates to a water quality purification and river ecological restoration wetland technology applied to lightly polluted river courses, and belongs to the technical field of river water quality purification. Background technique [0002] The seasonal difference in rainfall in northern my country is large, and the water level of the river fluctuates greatly. , and the groundwater level is low, some rivers have gradually become pollution-carrying rivers, and the main collection is the discharged water after treatment by urban sewage treatment plants. The discharge standard of my country's urban sewage treatment plants "Comprehensive Discharge Standards of Pollutants for Urban Sewage Treatment Plants" (GB18918-2002) stipulates that when the effluent of urban sewage treatment plants is discharged into rivers with small dilution capacity, it needs to meet the requirements of Class B. That is, the concentration of organic matter (COD) is less tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02A20/402Y02A40/22Y02W10/10
Inventor 张志斌张波魏垒垒谭晓波孔敏康兴生马涛周峰
Owner SHANDONG JIANZHU UNIV
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