Water body in-situ algal inhibition treatment system and method based on UVB-LED and floating-leaved plants

A UVB-LED, floating-leaf plant technology, applied in biological water/sewage treatment, chemical instruments and methods, light water/sewage treatment, etc. problem, to achieve the effect of water purification and algae removal efficiency

Pending Publication Date: 2021-12-21
NANJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there have been applications related to UVB sterilization, but they are mainly aimed at the disinfection of drinking water in waterworks, without considering the impact on other organisms and the application of in-situ natural water bodies
Due to the limited development of instruments, the in-situ algae removal process based on UVB has not been developed or maturely utilized. One of the reasons is that the significant UV, etc. are mostly hollow cathode lamps, containing mercury, including three bands of UVA, UVB, and UVC. Difficult to peel off

Method used

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  • Water body in-situ algal inhibition treatment system and method based on UVB-LED and floating-leaved plants

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Effect test

Embodiment 1

[0031] The selected water environment restoration area is the Duantou Zhibang River in a certain city. The length of the river is about 350m, the average water depth is about 3m, and the area of ​​the river is 2,500 square meters. Due to the algal blooms in summer and autumn and the water body in the Zhibang is generally static, resulting in the accumulation of cyanobacteria blooms, the water body is in a state of severe eutrophication. The water in-situ algae inhibition treatment system based on UVB-LED and floating leaf plants is laid on either side of the water surface of Duantouzhibang, and on the opposite bank of the laying system, the cyanobacteria bloom on the water surface is enriched to one end by a push flow aerator, and At the same time, it can increase the dissolved oxygen in the water body.

[0032] The in-situ algae-inhibiting treatment method for water based on UVB-LED and floating leaf plants includes the following steps:

[0033] (1) Use 15 rectangular high-d...

Embodiment 2

[0039] The selected water environment restoration area is the still water bay. The water in-situ algae inhibition treatment system based on UVB-LED and floating leaf plants is laid on either side of the water surface of the still water bay. Carry out plug-flow aeration to enrich algae to one side of the floating bed and increase dissolved oxygen in the water body at the same time.

[0040] The in-situ algae-inhibiting treatment method for water based on UVB-LED and floating leaf plants includes the following steps:

[0041] (1) Use 15 rectangular high-density polyethylene environmentally friendly foamed plastic plates of 5 meters x 1.5 meters x 0.15 meters as the floating bed body. The frame of the floating bed is made of stainless steel tubes. Set the plastic packing, and the plastic packing is connected in series using fishing line with a diameter of 0.5mm, and evenly suspended in the floating bed body. The three floating beds are separated by 0.1m and placed in series with...

Embodiment 3

[0047] The selected water environment restoration area is the Duantou Zhibang River in a certain city. The length of the river is about 450m, the average water depth is about 4m, and the area of ​​the river is 3000 square meters. The water in-situ algae inhibition treatment system based on UVB-LED and floating leaf plants is laid on either side of the water surface of Duantouzhibang, and on the opposite bank of the laying system, the cyanobacteria bloom on the water surface is enriched to one end by a push flow aerator, and At the same time, it can increase the dissolved oxygen in the water body.

[0048] The in-situ algae-inhibiting treatment method for water based on UVB-LED and floating leaf plants includes the following steps:

[0049] (1) Use 15 rectangular high-density polyethylene environmentally friendly foamed plastic plates of 5 meters × 2 meters × 0.15 meters (length × width × height) as the floating bed body, the floating bed frame is made of PVC pipes, and the flo...

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Abstract

The invention discloses a water body in-situ algal inhibition treatment system and method based on UVB-LED and floating-leaved plants. The system comprises a floating bed body, the floating-leaved plants in the floating bed body and a UVB-LED device suspended below or on the side face of the floating bed body. Biological algae inhibition can be carried out through the effects of shading, competitive absorption of nitrogen and phosphorus nutrient substances, interference of secreting allelochemicals and the like of floating-leaf plants on the water surface, and meanwhile UVB radiation physicochemical algae inhibition of the UVB-LED device is achieved. The system has the advantages of low cost, no need of additional chemical agents, small ecological risk, realization of the restoration of the eutrophicated water body, reduction of chlorophyll a in the water body by 95% or more, COD removal rate by 40% or more, total phosphorus removal rate by 60% or more, total nitrogen removal rate by 55% or more, and great enrichment of the landscape effect of the water surface, and has a wide application prospect in the field of eutrophic water body pollution control.

Description

technical field [0001] The invention belongs to the field of water body pollution restoration, and in particular relates to an in-situ water body algae suppression treatment system and treatment method based on UVB-LED and floating leaf plants. Background technique [0002] In recent years, with the acceleration of urbanization and industrialization, urban life and industrial pollution have caused urban rivers to absorb too many nutrients such as nitrogen and phosphorus, resulting in a large number of cyanobacteria in reservoirs, lakes and other surface water sources in summer. The frequency and scale of algal blooms increased, and the ecological balance of the water body was seriously damaged. It is of great practical significance to realize scientific and stable restoration treatment of lakes, reservoirs, ponds, landscape water bodies, rivers and other water bodies with high degree of eutrophication and serious pollution, which can significantly reduce the algae content in...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34
CPCC02F3/32C02F1/32C02F3/34
Inventor 李启蒙王国祥韩睿明刘金娥陈焱山许晓光张新厚陈赟
Owner NANJING NORMAL UNIVERSITY
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