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Three-dimensional modularized and ecologicalized modification system for hard vertical protecting bank and technology thereof

A modular and ecological technology, applied in horticulture, coastline protection, climate change adaptation, etc., to achieve the effect of reducing bank protection erosion, less engineering investment, and simple process operation

Inactive Publication Date: 2019-02-19
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Aiming at the prominent problems such as verticalization, hardening and severe erosion of river bank revetment, the purpose of the present invention is to provide a three-dimensional modularized ecological transformation system and process for hard vertical revetment. , submerged plant purification area, and an adjustable purification system has been established according to water level changes and water quality fluctuations, reducing nitrogen, phosphorus and other pollutants, fully ensuring water quality purification and ecological transformation of bank revetment

Method used

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  • Three-dimensional modularized and ecologicalized modification system for hard vertical protecting bank and technology thereof
  • Three-dimensional modularized and ecologicalized modification system for hard vertical protecting bank and technology thereof
  • Three-dimensional modularized and ecologicalized modification system for hard vertical protecting bank and technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The revetment length of a certain section of the river is about 2.3km, the river width is 26m, the flood level is 2.5m, the normal water level is 1.5m, and the dry water level is 0.5m.

[0037] A three-dimensional modularized ecological transformation system for hard vertical revetments, in which an enhanced treatment area 2, an emergent plant purification area 3, and a submerged plant purification area 4 are sequentially arranged on the side of the vertical revetment 1 close to the water body 5 to be treated; the enhanced treatment area 2. The heights of the emergent plant purification zone 3 and the submerged plant purification zone 4 are respectively the flood level (H 洪水位 ), normal water level (H 常水位 ) and dry water level (H 枯水位 ). The widths of the intensive treatment zone 2, the emergent plant purification zone 3 and the submerged plant purification zone 4 are respectively the normal water level (H 常水位 ) 0.5-0.8 times, 0.8-1.2 times, 1.1-1.3 times. When the wa...

Embodiment 2

[0048] Others are the same as embodiment 1.

[0049] The widths of the intensive treatment zone 2, the emergent plant purification zone 3 and the submerged plant purification zone 4 are respectively the normal water level (H 常水位 = 0.7 times (1.05m), 1.0 times (1.5m), 1.2 times (1.8m) of 1.5m).

[0050] The reduction of pollutants after the three-dimensional modular ecological transformation of the hard vertical revetment is shown in Table 2.

[0051] Table 2 embodiment 2 water quality situation before and after treatment

[0052] index

[0053] It can be seen from Table 2 that the removal rate of SS is 52%, the removal rate of COD is 38%, the removal rate of ammonia nitrogen is 33%, and the removal rate of total phosphorus is 41%.

Embodiment 3

[0055] Others are the same as embodiment 1.

[0056] The widths of the intensive treatment zone 2, the emergent plant purification zone 3 and the submerged plant purification zone 4 are respectively the normal water level (H 常水位 = 0.8 times (1.2m), 1.2 times (1.8m), 1.3 times (1.95m) of 1.5m).

[0057] The reduction of pollutants after the three-dimensional modularized ecological transformation of the hard vertical revetment is shown in Table 3.

[0058] Table 3 embodiment 3 water quality situation before and after treatment

[0059] index

[0060] It can be seen from Table 3 that the removal rate of SS is 55%, the removal rate of COD is 45%, the removal rate of ammonia nitrogen is 40%, and the removal rate of total phosphorus is 50%.

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Abstract

The invention discloses a three-dimensional modularized and ecologicalized modification system for a hard vertical protecting bank and a technology thereof. An enhanced treatment area, an emergent aquatic plant purification area and a submerged plant purification area are sequentially arranged on one side, close to a water body to be treated, of the vertical protecting bank, the bottoms are connected with the river bottom, the heights of all the areas are the flood water level, the normal water level and the low water level respectively, the widths of the areas are 0.5-0.8 time, 0.8-1.2 time and 1.1-1.3 times of the normal water level respectively, the bottoms of all the areas are filled with padding, and emergent aquatic plants and submerged plants are planted on the padding. When the water body to be treated gets close to the bank, the water body sequentially passes through all the areas with the different horizontal positions and is buffered by the planted plants, and the problem offlushing to the protecting bank is solved. Direct surface runoff pollutants sequentially pass through all the areas, and nitrogen and phosphorus are reduced greatly. The system has the advantages that the water quality purification effect is good, the stability of the protecting bank is high, the ecological environment is good, the technology is easy to operate, and the direct surface runoff pollutants are purified at the same time.

Description

technical field [0001] The invention belongs to the field of water environment protection and restoration, and in particular relates to a three-dimensional modularized ecological reconstruction system for hard upright revetment and its technology. Background technique [0002] Rivers and lakes are an important part of the ecosystem. The revetment project connects the important links of the terrestrial ecosystem and the aquatic ecosystem in the ecosystem, and has unique hydraulic and ecological characteristics. At present, most river banks are straight, hardened (concrete lining), and plants are scarce, which significantly reduces the function of revetments as river pollution reduction and ecological landscape. The bank revetment ecosystem is facing two outstanding problems: on the one hand, the particulate matter of suspended and sedimented species outside the river channel will aggravate the erosion and erosion of the bank revetment. On the other hand, the water level flu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/12A01G22/00C02F3/32C02F101/16C02F101/10
CPCA01G22/00C02F3/32C02F3/322C02F2101/105C02F2101/16C02F2103/007E02B3/12Y02A10/11
Inventor 沈晓笑邵雅璐赵子龙吴问波吴七斤邱娅柳
Owner HOHAI UNIV
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