Self-sustaining type landscape restoration ecological floating island device

An ecological floating island, self-sustaining technology, applied in biological water/sewage treatment, energy wastewater treatment, water/sludge/sewage treatment, etc. It can effectively remove the total nitrogen pollutants in the water body, and cannot effectively reduce the total nitrogen content in the water, so as to achieve the effect of repairing the eutrophic water body, increasing the visual beauty and enhancing the self-purification ability.

Inactive Publication Date: 2012-07-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Photocatalytic oxidation-biological floating bed algae removal technology device (CN101723555A) describes a device including a photocatalytic oxidation device, a floating body and a biological floating bed, etc. It has better effects in removing algae, killing bacteria, degrading organic matter, etc., but cannot Converting nitrate nitrogen and ammonia nitrogen pollutants in the water body into nitrogen gas cannot effectively reduce the total nitrogen content in the water
The device for purifying eutrophic water body with solar energy biolo

Method used

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  • Self-sustaining type landscape restoration ecological floating island device
  • Self-sustaining type landscape restoration ecological floating island device
  • Self-sustaining type landscape restoration ecological floating island device

Examples

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Effect test

Embodiment 1

[0053] In a eutrophic city park water area, an area of ​​about 800m is surrounded by canvas 2 Water area, floating island scale 160m 2 , the floating island covers 20% of the water surface in the project area. First, wrap the roots of Siberian iris, barley grass and coix with a height of 16-30cm with sponge, and then fix them in the floating island hollow basket with a distance of 15cm, and fill them with mulberry branches, diatomaceous earth and ceramsite. The layer thickness is 5, 8, 5cm respectively, the total filling depth is 18cm, and the planting density is 15 plants / m 2 ; The photocatalytic ribbon is located 2cm below the water surface, and the height of the overflow weir is 3cm. The photocatalytic ribbon is connected to the main body of the floating island with a rope at a distance of 10cm, and small holes with a diameter of 1cm are punched at the bottom, and the hole spacing is 10cm. Cu-TiO to glass fiber mesh 2 , Fe-TiO 2 , Pt-TiO 2 , C-TiO 2 The photocatalyst ...

Embodiment 2

[0058] In a certain eutrophic urban river, a 100m long and 10m wide water area is surrounded by canvas, and the scale of the floating island is 240m 2 , the floating island covers 24% of the water surface in the project area. First, the roots of Siberian iris, Egyptian sedge, reed bamboo, and yellow cattail with a height of 16-30 cm are wrapped with sponges, and then fixed in hollowed-out baskets on floating islands. The distance between hollowed-out baskets is 10 cm. Cinder, the thickness of each filler layer is 6, 7, and 6cm, the total filling depth is 19cm, and the planting density is 13 plants / m 2 ; The photocatalytic ribbon is located 2cm below the water surface, and the height of the overflow weir is 3cm. The photocatalytic ribbon is connected to the main body of the floating island with a rope at a distance of 15cm, and small holes with a diameter of 1cm are punched at the bottom, and the hole spacing is 15cm. Ag-TiO to glass fiber mesh 2 , Pd-TiO 2 , Pt-TNTs, N-TiO2...

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Abstract

The invention relates to an environmental engineering and water treatment technology and aims to provide a self-sustaining type landscape restoration ecological floating island device. The device comprises floating beds, floating islands which consist of aquatic plants planted between the floating beds, photocatalysis ribbons, and aeration devices which supply power by using solar systems; and each photocatalysis ribbon comprises a horizontal loading main body which is submerged below a water surface, a plurality of holes for circulating water bodies are distributed at the bottom of each photocatalysis ribbon, a carrier material loaded with a photochemical catalyst is fixed on the surface of each photocatalysis ribbon, and an overflow weir is arranged at the periphery of each photocatalysis ribbon. Each aeration device comprises an aeration pipeline and a motor. The organic matter and nitrogen and phosphorus are removed from eutrophic water by combining a photocatalysis technology, an ecological floating island technology and a solar energy technology; nitrate nitrogen and ammonia nitrogen are converted into nitrogen by the photocatalysis technology simultaneously; the accumulation of nitrogen pollutants is reduced, and nitrate is prevented from being converted into nitrite or ammonium; and dissolved oxygen in the water body is increased by using the aeration devices, and the self-purification capacity of the water body is improved, so the aim of restoring the eutrophic water well is fulfilled.

Description

technical field [0001] The invention relates to a self-sustaining landscape restoration ecological floating island device for repairing eutrophic water bodies, which belongs to the technical fields of environmental engineering and water treatment. Background technique [0002] With the rapid development of my country's economy, a large amount of organic pollutants in industrial wastewater and domestic sewage are discharged, resulting in excessive nitrogen and phosphorus nutrient salt content in lakes and other water bodies, causing eutrophication of water bodies, which in turn leads to aquatic ecosystem disorders and algae outbreaks , the species of aquatic organisms are reduced, and the biodiversity is destroyed. [0003] At present, physical, chemical and biological methods are mainly used to treat eutrophic water bodies. Physical methods include mechanical filtration, sediment dredging, high-voltage discharge, water level adjustment, ultrasonic, adsorption, aeration, etc....

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02W10/37
Inventor 赵伟荣任大庆王琰
Owner ZHEJIANG UNIV
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