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Method for killing Limnoperna fortunei in raw water pipeline with chlorine dioxide

A technology of chlorine dioxide and freshwater shell vegetables, which is applied to chemical instruments and methods, devices for catching or killing insects, water/sewage treatment, etc., can solve the problems of complicated operation and poor feasibility, and achieve safe and convenient operation, high efficiency Feasibility and ease of use

Inactive Publication Date: 2012-03-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problems of complex operation and poor feasibility of the prior art method for killing freshwater shellfish in raw water pipelines, and provides a method for killing freshwater shellfish in raw water pipelines by chlorine dioxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0007] Specific implementation mode one: this implementation mode provides a kind of method that chlorine dioxide kills freshwater shellfish in the raw water pipeline, and specific operation steps are as follows:

[0008] Apply chlorine dioxide to the raw water pipeline at a water temperature of 15-30°C to keep the concentration of chlorine dioxide in the raw water pipeline at 3-5mg / L for 2-15 days.

[0009] After being treated by this embodiment, the mortality rate of freshwater shellfish in the raw water pipeline reaches 70% to 100%.

[0010] Chlorine Dioxide Application:

[0011] 1. Disinfection of drinking water: Chlorine dioxide is a very effective water purifier for purifying drinking water, including good deodorization and decolorization capabilities, high-efficiency sterilization and virus-killing capabilities at low concentrations. Chlorine dioxide is used for water disinfection. When its concentration is 0.5-1mg / L, it can kill 99% of bacteria in water within 1 minut...

specific Embodiment approach 2

[0020] Embodiment 2: The difference between this embodiment and Embodiment 1 is that chlorine dioxide is applied to the raw water pipeline at a water temperature of 25° C., so that the concentration of chlorine dioxide in the raw water pipeline is kept at 5 mg / L for 6 days. Others are the same as in the first embodiment.

[0021] After being treated by this embodiment, the mortality of freshwater shellfish in the raw water pipeline is >99%.

[0022] According to this embodiment, when the concentration of chlorine dioxide in the raw water is 5 mg / L, the application time can be shortened under the premise of ensuring the mortality rate of freshwater shellfish > 99%, so as to achieve the purpose of improving efficiency.

specific Embodiment approach 3

[0023] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: at a water temperature of 18°C, chlorine dioxide is applied to the raw water pipeline, so that the concentration of chlorine dioxide in the raw water pipeline is kept at 5 mg / L for 14 days . Others are the same as in the first or second embodiment.

[0024] After being treated by this embodiment, the mortality rate of freshwater shellfish in the raw water pipeline reaches 60%-90%.

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Abstract

A method for killing Limnoperna fortunei in a raw water pipeline with chlorine dioxide relates to the treatment field of Limnoperna fortunei in the raw water pipeline. The invention aims to solve the problems of the prior art that the method for killing Limnoperna fortunei in the raw water pipeline has complex operations and low feasibility. The method comprises the following operation step: adding chlorine dioxide in the raw water pipeline under the condition that the water temperature is 15-30 DEG C to ensure that the concentration of chlorine dioxide in the raw water pipeline is kept for 2-15 days. The invention has the following advantages: 1) the mortality rate of Limnoperna fortunei in the raw water pipeline reaches 70%-100%; 2) the treatment method is economical and safe; compared with liquid chlorine, chlorine dioxide is characterized by stability, fewer by-products and the like; 3) the effects of removing iron-manganese and odor are good, the cost is low; and 4) the operations are safe and convenient and have extremely high feasibility. The method is mainly used to treat Limnoperna fortunei in the raw water pipeline.

Description

technical field [0001] The invention relates to the field of processing freshwater shell vegetables in raw water pipelines. Background technique [0002] Freshwater shellfish is a kind of freshwater mussel with two open and closed shells and well-developed filaments. It is a group of molluscs. Freshwater shellfish grows and reproduces in large numbers in the waters of southern my country, which will not only affect the ecological structure of the local water body, Cause damage to the ecosystem, and enter the raw water long-distance water pipeline, multiply in the pipeline, increase the water resistance of the pipeline, deteriorate the water quality, and endanger the safety of the water supply system. In addition, freshwater shellfish has the ability to close the shell and protect it in harsh environments. The short-term killing method cannot completely kill it. When it returns to a better water environment, it can restore its vitality. Therefore, the study is of great signif...

Claims

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Application Information

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IPC IPC(8): C02F1/00A01M13/00
Inventor 刘冬梅王睿崔福义洪洁陈伟雄王彩虹董玉莲王执伟
Owner HARBIN INST OF TECH
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