Composite alga retaining enclosure for floating plants

Abstract

The invention relates to a composite alga retaining enclosure for floating plants, comprising inner enclosures, outer enclosures and a floating plant community within the enclosed space by the inner enclosures and the outer enclosures. The inner enclosures and the outer enclosures are fixed on inner enclosure fixing piles and outer enclosure fixing piles embedded in bottom mud respectively; the inner enclosures and the outer enclosures are arranged in parallel according to the distance of twice the wave length, each of the outer enclosures comprises a flexible large-aperture nylon meshy hanging slice with the aperture of 50mm, each of the inner enclosures comprises a flexible small-aperture engineering non-woven geotextile hanging slice with the aperture of 50 meshes, the top ends are 1.5m above higher than the high water level. The floating plant community is preferably activated broken branches of alternanthera philoxeroides, and the input density is 20Kg per square meter. The composite alga retaining enclosure for floating plants has the functions of floating island wave decaying, floating plant alga trapping and water purification through the inner enclosures, the outer enclosures and the floating plant community therein, and can reduce the alga biomass at a water intake when being used for retaining alga in water head site; and the water quality of the water head site is improved.

Description

technical field [0001] The invention belongs to the fields of ecological engineering and environmental engineering, and relates to an algae-retaining enclosure, in particular to a novel composite algae-retaining enclosure of floating plants. Background technique [0002] The enclosure is widely used in engineering applications such as oil pollution interception and algae interception, and has two main functions. First, use impermeable materials to actively or passively collect the target objects floating or suspended in the water body; second, limit the pollutants floating, dissolved or suspended in the water body to a certain area to prevent their diffusion or transfer. With the development of eutrophication in lakes, reservoirs and other water bodies, more and more water sources have environmental problems such as algal blooms. However, the occurrence frequency of water quality decline, blockage of water supply equipment, and water supply crisis caused by algal blooms is...

AI Technical Summary

Problems solved by technology

In addition, the rubber or plastic enclosures used solely to keep algae away from water sources are mostly based on physical methods, which often do not have the effect of reducing pollutant levels in water sources and improving water quality in water sources.

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