A floating algae isolation and suppression device within the surface area of ​​a lake reservoir

Abstract

The invention discloses a device for isolating and inhibiting algae floating in surface regions of lakes and reservoirs. The device comprises a fence partition board arranged at one side of a water taking tower, wherein the bottom face of the fence partition board is arranged in a mixed layer of a lake / reservoir water body; a grid is arranged above the fence partition board; floating balls are mounted at nodes of the grid; the edge of the grid is fixedly connected with a mountain on the bank of a lake / reservoir; an aerating system is arranged below the grid. The device is provided with the fence partition board and the aerating system; an alga control region is formed inside and used for blocking outside algae from entering the alga control region, so that the number of algae entering the water taking tower is reduced and the water quality of raw material conveyed to a water purifying plant by a water outlet pipe is very high; a shading net is arranged above the grid and used for shading an incident light source in the alga control region and cutting off the photosynthesis of algae, thereby inhibiting the growth of alga grains on the surface of the alga control region, stopping the induction effect of light on mobile alga grains in a weak-light region and preventing algae at the lower part from floating up.

Description

technical field [0001] The invention belongs to the technical field of raw water purification, and relates to a device for isolating and suppressing floating algae within the surface area of ​​a lake reservoir. Background technique [0002] In recent years, with the rapid development of industrial and agricultural scale, the discharge of pollutants is far higher than before, and the eutrophication of lakes and reservoirs around the world is serious. Frequent algae outbreaks in major water bodies such as Taihu Lake, Chaohu Lake, Dianchi Lake, and East Lake have not only caused a water crisis, but also caused huge economic losses and seriously endangered the lives of surrounding residents. [0003] A large number of algae blooms in lakes and reservoirs have brought a series of drinking water safety problems. Most of the algae are suspended in the water body to form algae blooms, and some cyanobacteria are poisonous. After a large number of algae die, they are decomposed by he...

AI Technical Summary

Problems solved by technology

However, in the process of using this method, there are generally technical problems such as excessive energy consumption and frequent maintenance of equipment, resulting in a large increase in the cost of algae control, and it is difficult to promote it on a large scale.

[0017] 2. The reservoir bottom drainage method can effectively remove the nutrients at the bottom layer, cut off the source of algae nutrition, and achieve the purpose of inhibiting algae. However, this method has a large loss of storage capacity for reservoirs with small water storage, and the operation of reservoir bottom drainage is difficult. high risk

[0018] 3. The effect of the surface shading method is good, but due to the limitation of the shading area, the algae control ability is limited, and the algae in the water body outside the shading area is not controlled

However, due to the strong competitive advantage of algae, the fish in the eutrophic water body will die due to hypoxia, and it is difficult to achieve the expected effect.

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