Method for killing limnoperna fortune in long-distance raw water delivery pipeline by combined effect of potassium permanganate and sodium hypochlorite

A raw water delivery pipeline and sodium hypochlorite technology, applied in chemical instruments and methods, water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of poor feasibility and large dosage, and achieve high feasibility and safe operation convenient effect

Inactive Publication Date: 2014-01-22
HARBIN INST OF TECH
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Problems solved by technology

[0004] In order to solve the existing problem that a single oxidant is used to kill freshwater shellfish in the raw water delivery pipeline, the dosage is large and the feasibility is poor, the present invention provides a combined action of potassi

Method used

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specific Embodiment approach 3

[0017] Specific implementation method three: Add potassium permanganate and sodium hypochlorite to the raw water delivery pipeline at 16-18°C for 9 to 15 days, control the concentration of potassium permanganate in the raw water to 0.5mg / L, and sodium hypochlorite The concentration is 3mg / L.

[0018] The mortality rate of freshwater shellfish in the method for killing freshwater shellfish in the raw water pipeline by the combined action of potassium permanganate and sodium hypochlorite of the present embodiment reaches more than 60% on the 11th day, and the freshwater shellfish on the 15th day of adding The mortality rate reached 100%.

[0019] Embodiment 4: Add potassium permanganate and sodium hypochlorite to the raw water delivery pipeline at 16-18°C for 7 to 15 days, control the concentration of potassium permanganate in the raw water to 0.5mg / L, and sodium hypochlorite The concentration is 5mg / L.

[0020] In this embodiment, the combined action of potassium permanganate...

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Abstract

The invention discloses a method of killing limnoperna fortune in a long-distance raw water delivery pipeline by combined effect of potassium permanganate and sodium hypochlorite and relates to a method for killing limnoperna fortune in a raw water delivery pipeline. Under a 16 DEG C-18 DEG C condition, potassium permanganate and sodium hypochlorite are continuously added into the long-distance raw water delivery pipeline for 6-15 days, and in each liter of raw water, concentration of the potassium permanganate is controlled to 0.5mg/L-1mg/L, and concentration of the sodium hypochlorite is controlled to 1mg/L-5mg/L. According to the method, the potassium permanganate is added into the raw water delivery pipeline, so that oxidation is carried out to the greatest extent to kill the limnoperna fortune, and byssus can be dissolved by the sodium hypochlorite, so that byssus falls off quickly and can be removed from the pipeline, and therefore, a problem that water delivery effect of the water delivery pipeline is damaged by the limnoperna fortune is solved. Besides, the method disclosed by the invention can be used for effectively controlling quantity of the limnoperna fortune in the raw water and the pipeline, is safe and convenient to operate and extremely high in feasibility.

Description

technical field [0001] The invention relates to a method for killing freshwater shellfish in a raw water delivery pipeline, in particular to a method for killing freshwater shellfish in a long-distance raw water delivery pipeline. Background technique [0002] The filter-feeding benthos freshwater shellfish can easily invade the water delivery channels of water conservancy projects. The freshwater shellfish has well-developed filaments, which can form layers of groups in the pipeline, causing biofouling, blocking the pipeline, and increasing the pipeline's transport capacity. Water resistance reduces water transfer efficiency, pollutes water quality, corrodes structures, threatens project operation, and also brings potential danger to inter-basin water transfer. The water quality deterioration and biofouling caused by freshwater shellfish to water pipelines are real problems in long-distance water pipelines in southern my country. Therefore, the control of freshwater shellf...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/76C02F1/52C02F1/64
Inventor 刘冬梅崔福义王睿洪洁唐欢潘云皓
Owner HARBIN INST OF TECH
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