water purification device

Abstract

The invention discloses a water purification device, which comprises woody plants, a walkway layer, a sand cushion layer, a woody pressure-bearing layer, a woody isolation layer, a woody filler layer, emergent plants, an emergent pressure-bearing layer, an emergent The isolation layer, the emergent filler layer, the submerged plants, the submerged isolation layer and the submerged filler layer, the woody filler layer and the submerged filler layer are respectively located on both sides of the emergent filler layer. The water purifying device provided by the present invention can implement modular assembly of water purifying units according to local conditions according to the current situation of the landscape water body, and present a well-arranged waterfront landscape in the form of revetments, lake center islands, and the like. The water purification device provided by the invention has low investment cost, simple processing technology, convenient construction, good stability, and has multiple ecological functions such as water body purification, landscape recreation, material and land saving, and the like.

Description

technical field [0001] The invention relates to the technical field of water body purification, in particular to a water purification device. Background technique [0002] Ecological application technology shows that the solutions to major resource and environmental problems currently facing the world depend on the understanding of ecosystem structure and function, diversity and stability, ecosystem processes and mechanisms, succession laws, restoration or reconstruction, etc. practical research. The structure of the natural ecosystem is composed of various abiotic and biotic components, and its function is the result of the combined action of the abiotic and biotic components that make up the structure. The reconstruction of ecosystem structure is the premise of maintaining and exerting ecosystem functions, and the restoration of functions is the goal of structure reconstruction. [0003] For a degraded and damaged surface water artificial ecosystem, the loss or change of...

AI Technical Summary

Problems solved by technology

However, a series of problems have been exposed in the long-term operation of constructed wetlands, especially in northern regions, such as the withering and death of wetland plants, which seriously affects the ability of roots to transport oxygen to the ground; freezing in winter prevents the transfer of dissolved oxygen; Oxygen and anaerobic environmental conditions are not conducive to the degradation of organic matter, nitrification and the absorption of phosphorus by the substrate; when the temperature drops, the growth rate and nitrification rate of mesophilic bacteria responsible for nitrification are greatly inhibited, affecting the denitrification capacity of the entire wetland system The matrix blockage caused by the death of microorganisms, the corruption of plants and sediments, and the release of organic matter, nitrogen, and phosphorus all exacerbated the deterioration of wetland effluent quality

Based on the above analysis, the root cause of the decline in the efficiency of constructed wetlands lies in the instability of its structure, especially the withering, death and replacement of aquatic plants, which leads to the lack and instability of structural factors, which in turn leads to system instability, which is manifested as the purification function of the system. Decline

[0005] Another example is that the water quality of landscape water bodies in most northern cities in my country is poor. Although many cities have reconstructed some landscape river systems, the water quality is still difficult to maintain and presents a trend of continuous deterioration.

On the one hand, due to incomplete sewage interception and non-point source pollution problems have not been resolved, the pollution-holding capacity has exceeded its self-purification capacity; Morphology and natural direction, resulting in changes in the hydrodynamic process of the river, the loss of the function of the river to participate in the movement of the ecosystem in physical, chemical, biological and other forms, and the paralysis of the local ecosystem

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