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Method for removing floating cladophora

A clastophyte and algicide technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve non-toxicity and residual hazards, environmental pollution, and high water quality Improvement of organic substrates and other issues to achieve good cohesiveness and adsorption

Active Publication Date: 2015-11-04
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the control of Cladophora, it is mainly through manual salvage and application of some water purification treatment agents, but this method is time-consuming, laborious, and expensive. If the algae are not properly treated after salvage, they are easy to rot and produce unpleasant substances. , causing pollution to the environment; at the same time, the algae are easily broken into short filaments during salvage, and the short filaments are easy to proliferate again through vegetative reproduction, which cannot fundamentally solve the problem
In recent years, some researchers have begun to use herbicides such as atrazine, promethazine, paraquat, glyphosate, and Bimobao powder to remove Cladoides, but the inhibition rate against Cladoides is only 75.2% at the highest concentration. Then sodium dodecylbenzenesulfonate and dodecylphenol polyoxyethylene ether are added as auxiliary agents, and the inhibitory effect is improved. Not clear, can not blindly use on a large scale
Pantheon algae sand is a high molecular organic ketone polymer compound, which is often used in large quantities in the removal of filamentous algae. Since its main function is to kill algae, it cannot improve the high organic matter substrate of the water body

Method used

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  • Method for removing floating cladophora
  • Method for removing floating cladophora
  • Method for removing floating cladophora

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of method that removes floating Cladophora fast, its steps are:

[0034] 1) Area selection: Prepare a 1 L beaker, add 2 cm - 3 cm of sediment collected from Hangzhou West Lake, Zhejiang Province, add 1 L of Hangzhou West Lake water sample, and after clarification, throw in a vigorous beaker with a humidification weight of about 5 g. Cladophora in Hangzhou West Lake was cultured by the window for several days (10-30 days), and the experiment was carried out after the Cladophora floated on the surface of the water body;

[0035] 2) Preparation of Algicide I: dilute 30% hydrogen peroxide (analytical pure) with distilled water to a concentration of 3%, and place in a cool place;

[0036] 3) Preparation of algicide II: prepare ferrous sulfate into 0.02 mol / L ferrous sulfate solution with distilled water;

[0037] 4) The preparation of the sedimentation agent: the clay and bentonite with a moisture content of 10% or 12% or 14% or 15% (mass ratio) are formulated into a s...

example 2

[0042] 1) Regional selection: In the 10 L plastic barrels in the pretreatment field of Yuhuang Mountain, Hangzhou West Lake, Zhejiang Province, there are a large number of vigorous Cladophora collected and cultivated from Hangzhou West Lake, and they float on the surface of the water body for several days (10 days - 30 days), in which the substrate is the high-organic substrate of Hangzhou West Lake, with a thickness of 3 cm;

[0043] 2) Preparation of Algicide I: dilute 30% hydrogen peroxide (analytical pure) with distilled water to a concentration of 3%, and place in a cool place;

[0044] 3) Preparation of algicide II: prepare ferrous sulfate into 0.02 mol / L ferrous sulfate solution with distilled water;

[0045] 4) Preparation of sedimentation agent: clay and bentonite with a water content of 10% or 11% or 13% or 15% (mass ratio) are prepared into a sedimentation agent of 8: 2 by mass;

[0046] 5) The dosage and spraying conditions of algicide I and algicide II: choose a ...

example 3

[0050] 1) Regional selection: There is an ecological pond in the Yuhuangshan pretreatment field of West Lake diversion in Hangzhou, Zhejiang Province. There are many clastal algae growing in the pond, and they float on the water surface for several months (February-March), and their vitality is in a very vigorous stage. Use a fishing net to enclose an experimental area of ​​1 square meter, with a substrate thickness of about 3 cm;

[0051] 2) Preparation of Algicide I: Dilute 30% hydrogen peroxide (analytical grade) to a concentration of 5% with distilled water and place in a cool place;

[0052] 3) Preparation of algicide II: prepare 0.04 mol / L ferrous sulfate solution with distilled water;

[0053] 4) Preparation of sedimentation agent: use clay and bentonite with a water content of 10% or 11% or 14% or 15% (mass ratio) to prepare a sedimentation agent at a mass ratio of 7:3;

[0054] 5) The amount of algicide I and algicide II and the spraying conditions: choose a sunny da...

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Abstract

The invention discloses a method for removing floating cladophora. The method comprises the following steps: (1) area selection is carried out, wherein an area with vigorously growing and mass floating cladophora is selected; (2) an algicide I is prepared, wherein hydrogen peroxide is diluted with distilled water; (3) an algicide II is prepared, wherein a ferrous sulfate solution is prepared with distilled water; (4) a sedimentation agent is prepared, wherein clay and bentonite are prepared into the sedimentation agent; (5) the doses and spraying conditions for the algicides I and II are that the prepared algicides I and II are sprayed on the surface of cladophora in the selected area; (6) the sedimentation agent is added, wherein after cladophora is treated with the algicides I and II, the sedimentation agent is uniformly spread in water according to the area of the experiment area; cladophora sinks to the water bed; after standing, the water is clarified, and no cladophora floats on the surface. The method is simple; operation is convenient; cost is low; and no secondary pollution is caused. The method has a significant removal effect against cladophora, and has an amelioration effect upon high-organic substrate.

Description

technical field [0001] The invention relates to the technical field of removal of filamentous algae blooms in eutrophic lakes and improvement of high organic matter substrates in lakes, and more specifically relates to a method for quickly removing floating bristle algae, which is suitable for severe bristle algae outbreaks in eutrophic lakes Bottom water bodies with high organic matter, such as ponds, lakes, etc. Background technique [0002] In the late spring and early summer seasons, landscape water bodies, river crab breeding water bodies, pond fish farming water bodies, rice fields, lakes, etc. have relatively slow water flow, high water transparency, and a large number of large filamentous green algae - Cladophora ( Cladophora sp.), Cladophora is a class of filamentous green algae of the order Cladophyta Chlorophyta, Cladophylla agglomerates ( C. glomerata), Claedium fragilis ( C .fracta), Claedes oligobranches ( C . oligoclona) etc. There are three ways of repro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 吴振斌易科浪刘碧云代志刚张义贺锋徐栋
Owner INST OF AQUATIC LIFE ACAD SINICA
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