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Treatment of cyanophyta in eutrophic water by eichhornia crassipes

A technology of eutrophication and water hyacinth, which is applied in the field of cyanobacteria pollution control technology, can solve problems such as the overgrowth of cyanobacteria

Inactive Publication Date: 2003-04-02
林敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a method of controlling blue-green algae with biological ecology for the existing lakes due to eutrophication pollution, which leads to the more difficult pollution of blue-green algae.

Method used

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Examples

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Embodiment

[0004] Example: dig a 40m 2 The eutrophic Dianchi Lake water that was seriously polluted by blue-green algae was introduced into the pond in the lake, and water hyacinth lotus seedlings were stocked in April. When they entered the pond, the coverage rate was 40%. After a period of growth and reproduction, the coverage rate reached 60%, and they began to salvage every 12 days. Once, it is controlled at about 55%, and the reproduction speed is accelerated after entering the vigorous period, that is, it is salvaged once every 7 days, so that the coverage rate is controlled at about 50%. Death and corruption cause new pollution, that is, to speed up salvage until it is completely salvaged. After nearly 7 months of treatment, most of the cyanobacteria in the water in the pond have disappeared and become clear and transparent, which is significantly improved compared to the water in the nearby Dianchi Lake. The water hyacinths salvaged on the shore can be used as fertilizer or raw ...

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Abstract

An ecological technology for treating the nutrients-enriched water polluted by blue alga features that the water hyacinth is cultured in the water by a certain density and then periodically collectedin its growth phase. Its advantages are high effect and low cost.

Description

technical field [0001] The invention relates to a technology for treating eutrophication pollution of water bodies, in particular to a technology for treating cyanobacteria pollution. Background technique [0002] The water pollution of rivers, rivers, lakes and seas has become a serious problem of ecological deterioration that the whole world must face. Among them, in still or slow-flowing lakes, due to the eutrophication of the water body, the cyanobacteria that proliferate in large numbers has become an extremely difficult problem to manage. At present, there are mainly three types of cyanobacteria treatment: 1. Mechanical algae removal, this method consumes power If it is too large, the effect of mechanical pumping and suction is limited, and it is almost impossible for large-scale treatment; 2. Chemical algae removal: For small areas, the short-term effect is better, but the large-area and long-term effects are not good, and it will produce chemical agents to the water ...

Claims

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Application Information

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IPC IPC(8): C02F3/32
Inventor 林敏李映煌
Owner 林敏
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