Phosphorus-removing algae-inhibiting agent and application thereof

Abstract

The invention provides a phosphorus-removing algae-inhibiting agent and application thereof in the phosphorus-removing algae-inhibiting treatment of water bodies. The phosphorus-removing algae-inhibiting agent consists of the following components in part by weight: 5 to 15 parts of fly ash, 5 to 20 parts of micro-silicon powder, 15 to 50 parts of aluminum salt, 10 to 35 parts of lime and 0.01 to 0.2 parts of flocculation auxiliary Y1. The phosphorus-removing algae-inhibiting agent has the dual effects of phosphorus removal and algae inhibition, the blue-green algae concentration of a treated water body can reach more than 98 percent, the total phosphorus removal rate can reach more than 90 percent, moreover, the phosphorus-removing algae-inhibiting agent has no toxic effect on fish, zooplankter and other organisms in the water body, the eutrophication problem of the water body can be fundamentally solved, and the phosphorus-removing algae-inhibiting agent has a bright prospect.

Description

(1) Technical field [0001] The invention relates to a phosphorus-removing algae-inhibiting agent and its application in water body phosphorus-removing and algae-inhibiting treatment. (2) Background technology [0002] With the growth of population and the rapid development of social economy, environmental pollution is becoming more and more serious. The eutrophication of lake water and the subsequent outbreak of blue-green algae blooms have become a major environmental problem faced by China and other countries in the world! For example, California and Washington State on the west coast of the United States have varying degrees of water pollution and blue-green algae outbreaks. my country is a country with many lakes, with an area of ​​1km 2 There are more than 2,300 above, with a total area of ​​71,787km 2 , accounting for about 8% of the total area of ​​the country. It is worth noting that in the past ten years, the trend of eutrophication of lakes in my country has dev...

AI Technical Summary

Problems solved by technology

[0006] 1. Using traditional algicides such as copper sulfate: This method has certain ecological risks and directly threatens the survival of fish and zooplankton

[0007] 2. Use of alum slurry: relatively fast, and has no obvious ecological risk to fish and zooplankton, but the amount of use is large, and the concentration in surface water usually reaches 2×10 -5 Above, there is an ideal algae removal effect; the sticky cloud composed of fine particles such as organic debris, bacteria, algae and alum slurry is easily resuspended in the wind or the convection of the upper and lower water layers, and under the action of bacteria It decomposes quickly and re-participates in the material cycle of the water body, so it is difficult to achieve the goal of treating both symptoms and root causes by using alum slurry to remove algae

[0008] 3. Bleaching powder, lime, polyaluminium, iron salt, etc.: The single method of splashing lime water will change the pH value of the water body and make the water quality worse; bleaching powder and polyaluminum can be used temporarily as emergency treatment methods for killing algae, but Treat the symptoms, not the root cause; iron salts will increase the color of water

[0011] It can be seen that the above-mentioned methods all have certain limitations. All kinds of biochemical compound algicides, chemical algicides, and water purifiers that have been used in the removal of phosphorus and algae have one thing in common, that is, the formation of cyanobacteria flocs. Settling, especially the flocs of a single flocculant are small and evacuated. At the same time, the cyanobacteria flocs sink in the pool, and the nutrients nitrogen and phosphorus are still in the pool. After a period of time, cyanobacteria outbreaks will still occur. The treatment is not thorough, and the effect can only be obvious in the short term, and it is not suitable for long-term use

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