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Method for controlling harmful algae excessive propagation using stalk

A technology of excessive reproduction and straw, applied in the field of water treatment, can solve problems such as high consumption, secondary pollution of chemical substances, ecological disasters, etc.

Inactive Publication Date: 2009-03-18
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that it may be out of control and cause new ecological disasters
[0008] These methods have their own strengths, but all have considerable limitations, or the effect is limited, or the cost is huge, or there is secondary pollution caused by the introduction of chemical substances, especially they cannot solve the excessive reproduction of harmful algae on a large scale.

Method used

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  • Method for controlling harmful algae excessive propagation using stalk
  • Method for controlling harmful algae excessive propagation using stalk

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: Straw algae inhibition test

[0020] The rice stalks collected from the countryside were filled into a tubular net with a diameter of 50 cm to make a 1 m long straw bag, and 5 foam floating balls with a diameter of 15 cm were added to the straw bag. It was put into a certain bay of Taihu Lake at the end of February. The straw bales are tied with a rope, and the other end of the rope is tied with a heavy object, which sinks to the bottom of the lake to limit the position of the straw bales, so as not to drift with the waves. The distance between straw bales is 20m (if attached figure 2 ). Run again in June. During the bloom of cyanobacteria, the algae content in the test area was much lower than that in other waters, and there was no algae bloom.

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Abstract

Mass propagation of harmful algae is harmful to the health and safety of people. Current methods to control algae bloom have respective advantages but all have rather large limitation, for example, limited effect or high cost or secondary pollution caused by the introduction of chemical substances; especially, the methods cannot solve the excessive reproduction of harmful algae on a large scale. The invention provides a simple, effective and cheap method which is convenient to solve the excessive reproduction of harmful algae on a large scale. The treatment method adopts prolific agricultural waste-straws as a material, and therefore, the source is wide, the operation is convenient and the method can be applied on a large scale in waters such as rivers, lakes, reservoirs, etc.

Description

technical field [0001] The invention relates to a method for suppressing excessive reproduction of harmful algae in a water body by using straw, and belongs to the technical field of water treatment. Specifically, the agricultural waste—straw is soaked in the water body, and the algae-inhibiting substances produced by straw soaking, oxidation and microbial action are used to inhibit the excessive reproduction of harmful algae. Background technique [0002] The algal blooms caused by the eutrophication of the water body not only destroy the natural ecological balance of the water body, but also because algae such as Microcystis aeruginosa can produce Microcystin (Microcystin, Nodularia) Algae toxins (Aphantoxin) and other toxins are released into water bodies, posing an increasingly serious threat to the safety of drinking water for humans and animals. In my country, in addition to the "three lakes" that have been listed as key governance areas - Dianchi Lake in Yunnan, Taih...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 邹华向丽
Owner JIANGNAN UNIV
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