Method for high-efficiency harnessing eutrophicated algal tufa in lake and floating floor of magnetic deposition machine

Abstract

The invention discloses a method for effectively controlling algae bloom in eutrophic lakes and a floating floor of a magnetic precipitating machine; polymeric aluminum ferric chloride, ferric sulfate and ultrapure magnetite powder are uniformly blended according to a certain weight proportion and are prepared into magnetic algaecide by compounding and then the magnetic algaecide, together with water, is prepared into suspension; the suspension is blended with flowing algae-containing lake water and then algae is collected, precipitated and removed. The structure of the floating floor of the magnetic precipitating machine is as follows: the side surface of a boat hull is connected with a fluidizing tank, the front end of the fluidizing tank is opened, flow baffles are arranged at the middle of the fluidizing tank in a staggered way, the area in front of the flow baffles is provided with a mixing tank, while the area behind the flow baffles is provided with a sewage collecting tank. The invention not only can effectively flocculate algae cells and granular nitrogen-phosphorus suspended matters in water, but also can transform water-soluble phosphate radicals into slightly soluble phosphate to be flocculated. The adoption of the floating floor of the magnetic precipitating machine can greatly shorten the precipitating time of floccus, can reduce the length of a subsider and improve treatment efficiency, thus being suitable for the treatment of the eutrophic water body with large area.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for controlling algal blooms in eutrophic lakes and a floating bed of a magnetic sinking machine. Background technique [0002] In recent years, the occurrence and development of seawater blooms in my country's rivers and lakes has attracted widespread attention from all walks of life. The large-scale outbreak of water blooms has seriously damaged the balance and stability of aquatic ecosystems, not only affecting the water body landscape, but also affecting the aquaculture industry. development, and algae toxicity has constituted a threat to the human living environment. Only the economic losses caused by red tides to the coast amount to billions of yuan every year, so the outbreak of algae has become a disaster. The main nutrient elements that cause algal bloom outbreaks are nitrogen and phosphorus in water, especially phosphorus plays a key role. Currently mor...

AI Technical Summary

Problems solved by technology

This method has two disadvantages: First, introducing a large amount of copper ions into the water body will cause the copper ions in the water body to exceed the standard, thereby polluting the water body and organisms such as fish and shrimp in the water body.

Second, after the algal cells are killed, a large amount of algal toxins will be released, which not only seriously endangers aquatic organisms, but also has a strong carcinogenic effect on the human body

However, biological methods, especially ecological restoration methods, are important methods for the prevention and control of algal blooms in small-scale and fixed areas. However, such methods often require huge artificial engineering in advance to create and control the aquatic plants required to inhibit algal blooms ( For example, it is difficult for submerged plants to survive in the water bottom with low transparency or lack of suitable sediment) or the living conditions of animals, so the effect is slow and the cost is high, so it is difficult to be generally applicable to the treatment of large-scale and sudden algal blooms

[0009] Although the above methods can alleviate algal blooms to a certain extent, they have a common shortcoming - they cannot effectively remove the polluting elements of eutrophic water bodies - nitrogen and phosphorus, and cannot solve the problem of algal bloom outbreaks. Key issues, not the root cause

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