Self-sustaining type landscape restoration ecological floating island device

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....

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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 biological floating bed (CN102107948A) describes a device including solar energy device, solar electric panel and biological floating bed, and its solar energy only increases dissolved oxygen in water body, but cannot effectively remove difficult Degrade organic matter and nitrogen pollutants

[0006] However, when only semiconductors are used as photocatalysts, because most of the products are conversions between nitrate, nitrite, ammonia, etc., it is difficult to convert into nitrogen, and the total nitrogen pollutants in water cannot be removed well.

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