Ecological remediation technology for applying submerged plant to low-salinity seawater

Abstract

The invention provides an ecological remediation technology for applying a submerged plant to low-salinity seawater. An ecological remediation device composed of the submerged plant and a culture device is submerged into the seawater so as to purify the seawater with the salinity range of 0.6-1.2%, wherein the submerged plant is myriophyllum spicatum; the culture device comprises a plurality of transverse and longitudinal crosswise main ropes; mesh beds are fixed on the main ropes; the myriophyllum spicatum is attached to the mesh beds; a plurality of floating bodies are arranged on the main ropes; and a plurality of weights are connected onto the main ropes, so that the culture device is suspended in the water. According to the method disclosed by the invention, the fresh water submerged plant, namely the myriophyllum spicatum, is transplanted in a low-salinity seawater area, and the submerged plant which originally roots and grows in bottom mud is innovatively subjected to suspended culture, so that the water body can be well purified. In addition, with the adoption of the structural manner, the myriophyllum spicatum is arranged at a position at a certain depth in the water, and the growth of the myriophyllum spicatum is promoted, so that the purification effect is guaranteed.

Description

technical field [0001] The invention relates to the field of water area purification, in particular to an ecological restoration technology for applying submerged plants to low-salinity seawater. Background technique [0002] With the growth of population, the intensification of human activities such as agricultural production, industrial wastewater discharge, and large-scale fish and shrimp farming have prompted a large amount of nutrients to enter sea waters, especially coastal waters. A large amount of nutrients entering the sea area for a long time will cause a series of ecological and environmental problems such as seawater eutrophication, harmful algal blooms, and water hypoxia. At present, eutrophication is common in many sea areas around the world, including the Mediterranean Sea, the Baltic Sea, the North Atlantic coast, and the coastal waters of China. Approaches to controlling or modifying eutrophication have focused on reducing point and non-point sources, such ...

AI Technical Summary

Problems solved by technology

However, some estuaries with low salinity and high eutrophication are not suitable for the growth of macroalgae

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