A biological floating island and a wetland water restoration system with a biological floating island

Abstract

The invention relates to the wetland water body restoration technical field, and in particular, relates to a biological floating island and a wetland water body restoration system with the biological floating island. The biological floating island includes a silk screen with a plurality of through holes, a screen with a plurality of through holes, and hollow side pipes; the hollow side pipes are arranged at the periphery of the silk screen in a surrounding manner; the screen is arranged at the bottom surface of the silk screen, and the through hole diameter is 0.8-1.2 cm; a floating island framework surrounding by the hollow side pipes and the silk screen is internally filled with a granular biological attachment carrier, and the particle diameter of the biological attachment carrier is 1.5-3 cm. In the wetland water body restoration system, the sum of the areas of aquatic plants of the biological floating island is 1%-15% of the area of lake water. After 2 months after the biological floating island is constructed and is used in actual operation, the water quality of a water body is significantly improved, the concentrations of nitrogen and phosphorus in the water body are both reduced by 78%, the water quality is overall improved to class III water from class V water before restoration, the restoration effect is obvious, and the practicability is relatively high.

Description

technical field [0001] The invention relates to the technical field of wetland water restoration, in particular to a biological floating island and a wetland water restoration system with the biological floating island. Background technique [0002] An artificial floating island is a floating structure with aquatic or terrestrial plants. As early as the 1950s, artificial floating island technology was used by farmers in Mexico and Myanmar to grow crops. With the rapid economic growth, it has brought heavy loads to various natural water bodies. Under the combined action of foreign substances and endogenous pollution, the nutrients in the water body are excessive, causing the excessive reproduction of phytoplankton, which leads to the deterioration of water quality and the water environment. The problem is becoming more and more prominent. In order to alleviate this contradiction, artificial floating island technology has gradually developed. Bio-floating island technology ...

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Problems solved by technology

[0003] At present, many lakes, ponds and rivers in the world have adopted this technology, and there are also many engineering examples of ecological floating islands in China, such as Beijing Luodaozhuang River, Hangzhou Nanyingjia River, Wuxi Wuli Lake and Beijing Shishi Sea-killing, etc., have achieved good application results, but these cannot solve the situation of simply relying on the microorganisms attached to plants and plant roots to absorb and transform pollutants; and some consider this result. The process is complicated and cannot be promoted well

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