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Method for controlling algae growth by using plant of scirpus maritimus and lotus leaves

A technology of plant body and lotus leaf, applied in the field of harmful algae control in natural water bodies

Inactive Publication Date: 2005-10-26
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no application of Vitex trigonum as an algae-inhibiting material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 0.2 kg of algae inhibiting materials (including 0.1 kg of Vitex trigonum and 0.1 kg of lotus leaf) were bundled and added to 20,000 ml of Microcystis aeruginosa culture medium. After 20 days of cultivation, the inhibition rates were 94%.

[0021] As shown in Figure 1, the curve shows that after adding algae inhibiting materials 2, 4, 6, 8, and 10 grams to 5000 milliliters of algae culture solution and cultivating them for 10 days, the inhibition rates are respectively 48%, 75%, 93%, 97%, 99%. It shows that the growth of algae has been substantially completely inhibited at 10 grams.

Embodiment 2

[0023] 0.5 kg of algae inhibiting material was put into 50,000 ml of chlorella culture solution, and after 7 days, the algae density was only 3% of the control group, that is, the inhibition rate was 97%; after 14 days, the algae density was 1.3% of the control group, and the inhibition rate was 98.7%; After 35 days, the algae density was 0.8% of that of the control group, and the inhibition rate was 99.2%. After 42 days, the algae inhibiting material is taken out to avoid secondary pollution after decay.

Embodiment 3

[0025] Bundle 15 grams of algae-inhibiting materials (1.5 grams of Vitex trigonum, 13.5 grams of lotus leaf) into small bundles, put them into 3 liters of algae culture solution, and cultivate them under natural light and 25°C for 15 days. The density of chlorella is only that of the control group. 4%, that is, the inhibition rate was 96%. After 30 days, the density of chlorella was only 1.2% of that of the control group, that is, the inhibition rate was 98.8%. After the algae are suppressed, take out the trichosanthes to avoid secondary pollution caused by the rotting trichosanthes.

[0026] 15 grams of algae-inhibiting materials (7.5 grams of Vitex trigonum, 7.5 grams of lotus leaf) were bundled into small bundles, put into 3 liters of algae culture solution, and cultured under natural light and 25°C for 15 days, the density of chlorella was only that of the control group. 3%, that is, the inhibition rate was 97%. After 30 days, the density of chlorella was only 0.6% of th...

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PUM

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Abstract

The present invention relates to a method for inhibiting algae growty by using scirpus and lotus leaf plant body. Said method is characterized by that the plant parts of scirpus and lotus leaf can be bound or pulverized and placed into nylon bag, then can be placed into the water to be treated, the scirpus and lotus leaf in the water can released chemical induction substances with the functions of inhibiting algae growth and killing algae cells, so that it can obtain good effect for inhibiting algae growth, and can have extensive application field.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a new method for controlling harmful algae in natural water bodies. Background technique [0002] Eutrophication of water body is the main reason for the deterioration of water environment. The eutrophication of the water body leads to the growth of algae, which makes the water body lose its functions such as industrial and agricultural utilization, landscape, and breeding. Existing anti-algae technology mainly utilizes copper ion (Cu 2+ ) herbicides to kill algae. However, copper ions cannot be degraded in water bodies, and will be transmitted in the ecosystem through the food chain, and the higher the trophic level, the higher the concentration of copper ions in organisms (biomagnification). If people eat aquatic animals rich in copper ions, it will endanger human health. Herbicides will kill other higher plants in the aquatic ecosystem while killing algae, destroying the aqu...

Claims

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Application Information

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IPC IPC(8): C02F3/32
Inventor 胡洪营李锋民申欢
Owner TSINGHUA UNIV
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