Method for purifying eutrophic landscape water body on planted floating bed

Abstract

The invention relates to a method for purifying a eutrophic landscape water body on a planted floating bed. The method comprises the following steps: firstly, selecting floating bed species according to practical pollution situations of the landscape water body; desoiling and washing the selected species, shearing leaves of all plants into 30-40cm height, carrying into a laboratory for performing water planting for 10 days, and then selecting strong plants which are well in growth situation and uniform in growth trend; by taking polystyrene foam plate as a floating bed carrier, opening pores on the foam plate at equal spaces, and field-planting the strong plants at intervals; placing the floating bed plants into a test water body at April and May, wherein the planting area is about 50-60% of that of a water surface, and the water temperature is at 18-32DEG C; immersing the roots of the plants into water so as to be fully spread. After the method is utilized, the original eutrophic water body is restored by plants cultivated by the floating bed, the content of DO in the water body shows a slow descending trend along time, the indexes of TP, NH3-N, COD and the like can show obvious ascending trend, and the water quality can be obviously improved.

Description

[0001] technical field [0002] The invention belongs to the field of water body purification, and in particular relates to a method for purifying eutrophic landscape water body by a plant floating bed. Background technique [0003] In recent years, with the continuous improvement of people's requirements for the living environment, the construction of landscape water bodies has become a hot spot in urban construction and real estate development. The common forms of water bodies that create landscapes include natural lakes, artificial lakes in large and medium-sized city parks, landscape rivers, artificial landscape lakes, fountains, cascading flows, and waterfalls that are matched with real estate development. The improvement of landscape water ecological environment plays a vital role in improving the living environment. [0004] Due to the characteristics of the landscape water body itself and the interference of various external factors, its pollution status is not opti...

AI Technical Summary

Problems solved by technology

Through investigation, it is found that landscape water body designers generally only consider the landscape effect and cultural performance, and seldom consider the issue of water quality maintenance, resulting in the poor water quality of most landscape water bodies

Among the 10 landscape water bodies investigated, most of the landscape water bodies are static or slow-flowing water bodies with poor fluidity. Due to the shallow water depth and weak self-purification ability, it is difficult to export the substances in the water bodies, and the bacteria in the water bodies reproduce in large numbers, which will inevitably lead to water pollution. Eutrophication causes the water body to lose its landscape function; coupled with poor biodiversity, it increases the difficulty of water quality maintenance

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