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Artificial waterweed

A technology of artificial aquatic plants and aquatic plants, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the research on the adsorption and degradation performance enhancement of artificial aquatic plants, and the adsorption of suspended particles is not very good Good, aquatic plants are easily entangled together, etc., to achieve the effect of good visible light activity, easy microbial attachment, and high biocompatibility

Active Publication Date: 2016-02-24
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the first type of artificial aquatic plants, most of the artificial aquatic plants are composed of grass fibers, main ropes, floats and bottom fasteners. Due to their relatively small cross-sectional area, aquatic plants with this structure do not have a good adsorption effect on suspended particles. At the same time, if If the artificial aquatic plants are densely distributed, the aquatic plants are easy to be entangled; for the second type of artificial aquatic plants, the artificial aquatic plants are generally composed of a net cage and the body, but most of the second type of artificial aquatic plants do not make good use of the net The box structure does not maximize the utilization of the entire artificial aquatic plant structure
The invention and design of the above two kinds of artificial aquatic plants have better imitated the natural aquatic plants from the perspective of bionics, but there are relatively few studies on the enhancement of the adsorption and degradation performance of artificial aquatic plants.

Method used

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Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the present invention is used for water body purification and ecological restoration of artificial aquatic plants, the main part of the aquatic plants uses the aquatic plant carrier 1 as the main structure, in this embodiment, the aquatic plant carrier is a film-coated woven cloth, and a float 3 is fixed on the upper, lower, left, and right sides respectively. Provide buoyancy for artificial aquatic plants to keep them vertical in the water body to ensure their maximum contact area. Grass fiber 2 is fixed on the woven cloth, and its material is composed of layered porous PAN activated carbon fiber and nitrogen-doped TiO 2 The catalytic material is composed of two kinds of layered porous PAN activated carbon fibers, and the length is proposed to be 5-10cm, which has good stability. The preparation method of each material is as follows:

[0032] image 3 It is the SEM figure of the layered porous PAN activated carbon fiber; the specific prepa...

Embodiment 2

[0041] Such as figure 2 As shown, the base 6 is in the shape of a cuboid, and the dimensions are intended to be 50 cm long, 20 cm wide, and 15 cm high. The upper surface is provided with 10 hook ring fixing parts 5, which are arranged in two rows and five rows. figure 1 The clasp 4 on the medium water grass carrier is enclosed within on the clasp fixing part 5 and can connect the grass body with the base. The quantity of the artificial aquatic grass substrate is configured according to 10%-20% of the water surface to be treated. The height of artificial aquatic plants is set according to the actual water depth, and the distance from the water surface is 20cm-50cm, which will not affect the navigation. The artificial aquatic plants for water purification and ecological restoration are similar to natural aquatic plants and do not affect the water landscape.

Embodiment 3

[0043] Connect 10 artificial aquatic plants of Embodiment 1 to the base 6 to form a small group of aquatic plants. Place such aquatic plants in 2 rows and 6 columns in a rectangular water tank in the laboratory. The length of the rectangular water tank is 5m. The sink allows the water in the entire sink to circulate continuously. Collect water samples from the Shuiximen Bridge section of the Qinhuai River in Nanjing and pour them into the sump and rectangular water tank. Take water samples for testing and record data before circulation; turn on the pump to circulate the water samples continuously, and test the water in the tank every 24 hours. Sampling and analysis were carried out, and a total of three samples were taken. At the same time, the turf fibers at 12, 36, 48 and 72 hours after circulation were taken for PCR-TRFLP analysis.

[0044] Figure 5 It is the histogram of microbial biomass on the surface of artificial aquatic grass fiber; Image 6 DO, IMn, NH in water ...

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Abstract

The present invention discloses an artificial waterweed, a plurality of floaters are evenly distributed in four corners of both sides of a waterweed support, weed body fiber is uniformly arranged on the waterweed support surface; the weed body fiber comprises layered porous PAN-based activated carbon fiber and nitrogen-doped TiO2 catalytic material-loaded layered porous PAN-based activated carbon fiber; activated carbon fiber has a large specific surface area, can absorb and retains suspended and dissolved pollutants in water, has high biological affinity, and is conductive to microbial attachment and film formation; a nitrogen-doped TiO2 catalytic material has good visible light activity, can oxidize macromolecular organic pollutants in water into small molecule organic pollutants under natural light photocatalysis, and is conductive to degradation of microorganisms adhered on the weed body surface, a base is filled with a carboxymethylcellulose polymer, colloid containing large amounts of carboxyl groups, hydroxymethyl groups and the like has a certain heavy metal ion adsorption capacity, and can effectively remove heavy metal ions in the water.

Description

technical field [0001] The invention relates to an artificial aquatic plant with enhanced adsorption, photocatalytic oxidation and microbial degradation performance, and belongs to the technical field of water body ecological environment protection and ecological restoration. Background technique [0002] In natural water bodies, aquatic plants inhibit the growth of phytoplankton by competing for nutrients. At the same time, aquatic plants also affect the concentration of dissolved oxygen and carbon dioxide, alkalinity and pH in water bodies, so aquatic plants play a vital role in water purification. . With the economic development and population increase, our country's urban rivers and lakes are suffering from increasingly serious pollution and damage. Water pollution leads to algal blooms, consumes dissolved oxygen in water, destroys the living environment of aquatic plants, makes it difficult for aquatic plants to grow, reduces the self-purification ability of rivers, an...

Claims

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Application Information

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IPC IPC(8): C02F3/34
CPCC02F3/34
Inventor 李轶叶全梁张文龙熊维李杰
Owner HOHAI UNIV
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