Method for killing fresh water moule in raw water transportation pipeline by utilizing potassium permanganate

A technology of raw water delivery pipeline and potassium permanganate, which is applied in the directions of sterilization/microdynamic water/sewage treatment, oxidized water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve complex operation, poor feasibility, Threats to drinking water safety and other issues, to achieve the effect of safe and convenient operation and high feasibility

Active Publication Date: 2012-05-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing methods for killing freshwater shell vegetables in raw water pipelines are complicated to operate and poor in feasibility, and the killing method using chlorine-containing disinfectants produces disinfection by-products, which threaten the safety of drinking water. The invention provides a method for killing freshwater shellfish in raw water pipelines by potassium permanganate

Method used

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Experimental program
Comparison scheme
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specific Embodiment approach 1

[0012] Specific embodiment one: this embodiment is the method that potassium permanganate kills the freshwater shellfish in the raw water delivery pipeline, and it is realized through the following steps: in the raw water delivery pipeline, add potassium permanganate, dosing continuously In 5 to 12 days, control the concentration of potassium permanganate per liter of raw water to 1.2 to 1.8 mg, and complete the method for killing freshwater shellfish in raw water pipelines by potassium permanganate.

[0013] In the method for potassium permanganate in this embodiment to kill freshwater shellfish in raw water pipelines, the continuous dosing time of potassium permanganate is controlled to be 5 to 12 days, and the concentration of potassium permanganate per liter of raw water reaches 1.2 to 1.8 mg , The mortality rate of freshwater shellfish reaches more than 70%. If it takes a long time to completely kill freshwater shellfish, it is not advisable from an economic point of view...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that when the raw water temperature is 21-25° C., potassium permanganate is added to the raw water delivery pipeline for 5-8 days continuously. Other steps and parameters are the same as those in Embodiment 1.

[0017] The mortality rate of the freshwater shellfish in the method for killing freshwater shellfish in the raw water delivery pipeline by potassium permanganate in this embodiment reaches more than 80%.

specific Embodiment approach 3

[0018] Specific embodiment three: this embodiment is different from specific embodiment one in that potassium permanganate is added to the raw water pipeline with a raw water temperature of 21 to 25°C, and the continuous dosing is 5 to 8 days to control the high temperature per liter of raw water. Potassium manganate concentration reached 1.5mg. Other steps and parameters are the same as those in Embodiment 1.

[0019] The mortality rate of the freshwater shellfish in the method for killing the freshwater shellfish in the raw water pipeline by the potassium permanganate of the present embodiment reaches more than 85%.

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Abstract

The invention discloses a method for killing fresh water moule in a raw water transportation pipeline by utilizing potassium permanganate and relates to a method for killing the fresh water moule in the raw water transportation pipeline, solving the problems that the existing method for killing the fresh water moule in the raw water transportation pipeline is complicated in operation and is poor in feasibility, disinfection byproducts are generated by using a killing method in which a chloride-containing disinfector is used so as to threaten the safety of drinking water. The method comprises the step of continuously adding the potassium permanganate in the raw water transportation pipeline for 5-12 days, wherein the concentration of the potassium permanganate in each L of raw water is controlled to 1.2-1.5 mg, so that the fresh water moule in the raw water transportation pipeline is killed. The potassium permanganate can oxidize and kill the fresh water moule, the mortality of the fresh water moule is above 70%; and simultaneously, the potassium permanganate can remove fume in water and can exert a nuclear coagulation effect of manganese dioxide, thus the purposes of flocculation and precipitation are achieved in advance, and the difficulty of subsequently water treatment process is not increased. According to the invention, operation is simple, safe and stable, and no disinfection byproducts are generated, thus the method has an extremely high practicability.

Description

technical field [0001] The invention relates to a method for killing freshwater shellfish in a raw water pipeline. Background technique [0002] Freshwater shellfish is a new water treatment problem encountered in southern my country. It will not only affect the ecological structure of the local water body, but also cause damage to the ecosystem. Especially in long-distance raw water pipelines, freshwater shellfish can multiply in large numbers and endanger water supply. system security. Due to its gregarious characteristics and well-developed silk, it can form groups stacked in layers in the pipeline, increasing the water delivery resistance of the pipeline and deteriorating the water quality. At the same time, the dead and fallen freshwater shellfish caused siltation at the turning of the pipeline and at the sampling port, affecting the water passing capacity of the pipeline and the normal operation of the monitoring facilities. Therefore, the control of freshwater shellf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/50C02F1/72C02F1/52
Inventor 刘冬梅王睿崔福义陈伟雄王彩虹董玉莲洪洁王执伟
Owner HARBIN INST OF TECH
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