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Method for controlling excessive multiplication of harmful algae in fresh water by straw

An over-breeding and straw technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve ecological disasters, secondary pollution of chemical substances, uncontrollable problems, etc.

Inactive Publication Date: 2013-07-10
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 excessive multiplication of harmful algae in fresh water by straw
  • Method for controlling excessive multiplication of harmful algae in fresh water by straw

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 15m (as attached figure 2 ). Run again in June. During the bloom of cyanobacteria, the algae content in the test area is much lower than other waters to form algal blooms.

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Abstract

Health and safety of people are endangered by mass propagation of harmful algae in fresh waters such as lakes, reservoirs and rivers. The method for controlling algae bloom at present respectively has strong points, but has considerable boundedness, or limited effect or large cost, or has secondary pollution because of adding chemical substances, especially cannot solve the excessive multiplication of the harmful algae in a large range. The invention provides a method for controlling excessive multiplication of harmful algae in fresh water by a straw, and belongs to the technical field of water eutrophication treatment. The method is simple and effective and low in cost, and can easily restrain excessive multiplication of the harmful algae in the fresh water on a large scale. By adopting the method, a lot of agricultural wastes, namely straws are adopted as raw materials. Therefore, the method is wide in source, and convenient to carry out, and can be carried out in waters such as rivers, lakes and reservoirs on a large scale.

Description

technical field [0001] The invention relates to a method for using straws to suppress excessive reproduction of harmful algae in fresh water bodies, and belongs to the technical field of water body eutrophication control. 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 eutrophication of lakes, reservoirs, rivers and other fresh water bodies not only destroys the natural ecological balance of water bodies, but also produces microcystins (Microcystin, algal toxins) and nodular algae due to algae such as Microcystis aeruginosa Toxins (Nodularia), 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 list...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00
Inventor 邹华王靖国王震
Owner JIANGNAN UNIV
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