Method for removing or inhibiting alga in eutrophic water

A technology of eutrophication and production methods, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve problems such as uneconomical, secondary pollution of water, unscientific, etc., to avoid garbage and resource recycling. Effect

Inactive Publication Date: 2019-04-16
珠江流域水环境监测中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Putting chemical reagents that can kill algae into the water can kill algae in a short time, but this method is neither scientific nor economical. The chemical reagents put in will cause new environmental pollution or destroy other aquatic organisms. Ecological balance, and the a

Method used

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  • Method for removing or inhibiting alga in eutrophic water
  • Method for removing or inhibiting alga in eutrophic water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Effects of common ceramsite and modified ceramsite on algae cells

[0036] figure 1 It is the change chart of algae cell density. Three experimental groups are set up. One group is the control group without adding anything, one group is added with ordinary ceramsite, and the last group is added with modified ceramsite. increased, indicating that there are excess nutrients in the culture medium to maintain algae proliferation; the density of algae cells added with ordinary ceramsite first decreased and then increased slightly, indicating that the porous structure of ordinary ceramsite can indeed absorb algae cells, making the algae cell density The removal rate of common ceramsite on algae cells reached 25.7%; the density of algae cells added with modified ceramsite decreased significantly, indicating that the algae cells were affected by the adsorption and phosphorus removal of the porous structure of ceramsite, making the algae cell density The rate of remo...

Embodiment 2

[0037] Example 2: Effect of ordinary ceramsite and modified ceramsite on phosphate

[0038] figure 2It is a diagram of the concentration change of phosphate in water. Set up three experimental groups, one group without adding anything is the control group, one group is added with ordinary ceramsite, and the last group is added with modified ceramsite. After 6 days of cultivation, the phosphate of 3 bottles Concentrations are gradually decreasing. Due to the adsorption of ceramsite, the density of algal cells and the consumption of phosphate in the flask with ordinary ceramsite were lower, so the phosphate concentration was generally higher than that of the control group; the phosphate concentration in the flask with modified ceramsite was significantly higher. , indicating that the modified ceramsite has a very significant effect on the removal of phosphate, and the growth of algae is inhibited by removing phosphorus.

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Abstract

The invention discloses a method for removing or inhibiting alga in eutrophic water. The method is characterized in that clay and clayey soil are taken as primary raw materials to produce ceramsite, and the ceramsite is pre-processed; the pre-processed ceramsite is produced into phosphorous removal modified ceramsite and iron removal modified ceramsite; the phosphorous removal modified ceramsite and the iron removal modified ceramsite are filled into an alga removing device; the alga removing device is transported to the place where algal bloom takes place, the alga removing device in water issalvaged after soaking is conducted for 5-7 days, and the modified ceramsite which completely absorbed alga is poured out. The method has the advantages that on one hand sunlight can be shaded usingthe alga removing device so that the alga in the water cannot perform photosynthesis to inhibit the growth of the alga, on the other hand, the growth of alga cells is inhibited due to limited nutrients, the modified ceramsite which completely absorbed the alga can be used for producing fertilizers for potted flowers, the generation of rubbish is avoided, and resources are recycled, which is more environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of water body treatment, in particular to a method for removing or inhibiting algae in eutrophic water body. Background technique [0002] When the freshwater body is in a eutrophic state, suitable conditions such as temperature, light, climate and hydrology can easily induce algal blooms. Affected by global warming and human activities, the process of eutrophication in freshwater lakes, reservoirs, and even rivers around the world has accelerated in recent years, and algal blooms have continued to appear. Water blooms have occurred in important lakes such as Taihu Lake, Chaohu Lake and Dianchi Lake in my country for many times, and the density of algae cells even reached 10 in the worst case. 9 A / L, lost the normal function of the water body, posed a threat to the safety of drinking water for residents along the coast. [0003] Putting chemical reagents that can kill algae into water can kill algae in a s...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/50B01J20/30B01J20/12C02F101/10C02F101/20
CPCB01J20/12C02F1/281C02F1/50C02F2101/105C02F2101/203C02F2303/04C02F2303/20
Inventor 王旭涛闻启武
Owner 珠江流域水环境监测中心
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