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Method for constructing multi-phenological-type aquatic plant community interception zones for small river

A technology of aquatic plants and emergent plants, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as inconsistency, reduce flood control pressure, reduce ecological risks, Enhance the effect of landscape effect

Inactive Publication Date: 2018-04-20
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention proposes a method for constructing interception zones of small-scale river multi-phenological aquatic plant communities, the purpose of which is to solve the problems of inconsistency between improving water quality, enhancing river landscape, dredging water flow, and repairing water ecosystems

Method used

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  • Method for constructing multi-phenological-type aquatic plant community interception zones for small river
  • Method for constructing multi-phenological-type aquatic plant community interception zones for small river
  • Method for constructing multi-phenological-type aquatic plant community interception zones for small river

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Embodiment 1

[0041] A method for constructing a multi-phenological type aquatic plant community interception zone in a small river, by creating a small habitat for the survival of different life-type aquatic plants, configuring different phenological types of aquatic plants, and forming a closed aquatic plant community interception zone on the cross-section of the river channel; Plant interception zones are distributed at intervals in the longitudinal direction of the channel.

[0042] The intercepting zone for aquatic plants is suitable for small river channels with a channel width of 9m.

[0043] The intercepting zones of aquatic plants are distributed in strips in the longitudinal direction of the river channel.

[0044] The intercepting zone for aquatic plants is a closed intercepting zone for aquatic plant communities of different phenological types.

[0045] Described aquatic plant interception zone comprises four kinds of aquatic plant communities, and four kinds of aquatic plant c...

Embodiment 2

[0061] The object is the water conveyance channel of the tailwater wetland in a certain city. The width of the water conveyance canal is 7-12m, and the deepest part of the river is 1.2-2.0m. The incoming water of the river is the tailwater of a sewage treatment plant in a certain city. = 1109 – 45.32 mg / L, total phosphorus = 0.12 - 2.35 mg / L, ammonia nitrogen = 3.44 -19.31 mg / L; and the incoming water of a certain urban sewage treatment plant is local urban domestic sewage, which enters the tail water after being treated by the sewage treatment plant Concentration treatment of water wetlands.

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Abstract

The invention relates to a method for constructing multi-phenological-type aquatic plant community interception zones for a small river. The method comprises a step of constructing multi-phenological-type aquatic plant community interception zones on the cross section of the river, wherein the multi-phenological-type aquatic plant community interception zones are longitudinally distributed on theriver at intervals. The method has the advantages that 1) the closed aquatic plant community interception zones improve the capability of the river in removing of eutrophic substances; 2) the aquaticplant community interception zones arranged at intervals relieve the flood prevention burden of the river; 3) configuration of complex aquatic plant communities reduces inundation of a single speciesand ecological risks caused by the inundation; 4) relatively regular aquatic plant distribution improves the integral landscape effect of the river; and 5) the closed aquatic plant community interception zones controls disordered distribution of floating plants.

Description

technical field [0001] The invention relates to a method for constructing a small-scale channel multi-phenology type aquatic plant community interception zone, which belongs to the technical field of water ecological purification and restoration. Background technique [0002] Aquatic plants play an important role in constructed wetlands. On the one hand, the growth of aquatic plants can absorb nitrogen and phosphorus in the water body; on the other hand, anaerobic zones and The aerobic area provides conditions for the survival of aerobic, facultative aerobic and anaerobic microorganisms, so that microorganisms can perform nitrification / denitrification. Studies have shown that the amount of nitrogen removal by microbial nitrification / denitrification accounts for the total amount of nitrogen removal in constructed wetlands. In addition, microorganisms can also metabolize pollutants such as COD and total phosphorus in the water body, thereby improving the removal rate of wetlan...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCC02F3/32
Inventor 张文娟赵德华张淼吕丽萍刘哲
Owner NANJING UNIV
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