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Green water treatment technique for controlling attachment of microbial films on surfaces of devices and pipelines in water bodies

A technology of microbial membrane and water treatment, applied in the direction of magnetic field/electric field water/sewage treatment, etc., can solve the problems of affecting the life of reverse osmosis membrane and high treatment cost, and achieve the effect of low treatment cost and reduced corrosion

Inactive Publication Date: 2012-08-15
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Application Information

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Problems solved by technology

[0004] Similarly, in other water treatment systems such as reverse osmosis water production systems, the adhesion of microbial films will seriously affect the efficiency of reverse osmosis water production. The use of stripping agent will affect the life of the reverse osmosis membrane to a certain extent, and the treatment cost is high

Method used

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  • Green water treatment technique for controlling attachment of microbial films on surfaces of devices and pipelines in water bodies

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Experimental program
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Effect test

Embodiment 1

[0025] In simulated cooling water containing 10mg / L sulfate-reducing bacteria (main composition: 20mg / L Ca 2+ , 6 mg / L Mg 2+ , 122mg / L HCO 3 - , 360mg / L SO 4 2- , 300mg / L Cl - , 380mg / L Na + ), the above-mentioned electromagnetic water processor was used for 5 seconds, and the sterilization rate was 5.2%. -2 down to 19.20mJ·m -2 , The gravimetric method obtained that the amount of microbial film attachment decreased by 26%.

Embodiment 2

[0027] In simulated cooling water containing 10mg / L sulfate-reducing bacteria (main composition: 20mg / L Ca 2+ , 6mg / L Mg 2+ , 122mg / L HCO 3 - , 360mg / L SO 4 2- , 300 mg / L Cl - , 380mg / L Na + ), the above-mentioned electromagnetic water processor was used for 5 minutes, and the sterilization rate was 11.3%. -2 down to 18.03mJ·m -2 , The gravimetric method obtained that the amount of microbial film adhesion on the surface of stainless steel decreased by 95%.

Embodiment 3

[0029] In simulated cooling water containing 10mg / L sulfate-reducing bacteria (main composition: 20mg / L Ca 2+ , 6mg / L Mg 2+ , 122mg / L HCO 3 - , 360mg / L SO 4 2- , 300mg / L Cl - , 380mg / L Na + ), the above-mentioned electromagnetic water processor was used for 20 minutes, and the bactericidal rate was 43.7%. -2 down to 9.37mJ·m -2 , the gravimetric method obtained the adhesion amount of microbial film on the surface of stainless steel to be 0.

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Abstract

The invention discloses an electromagnetic treatment technique for controlling the attachment of microbial films on the surfaces of devices and pipelines in water bodies. Namely, through adopting an electromagnetic water treater and arranging an operating induction coil of the electromagnetic water treater at a water inlet of a water treatment device or pipeline, under the action of an electromagnetic field, the theoretic adhesion work between a microbial film on the surface of the water treatment device or pipeline and the surface of the water treatment device or pipeline is reduced, thereby preventing the formation of the microbial film on the surface of the water treatment device or pipeline or achieving a stripping effect on the formed microbial film. The electromagnetic treatment technique for controlling the attachment of microbial films on the surfaces of devices and pipelines in water bodies, disclosed by the invention, has the characteristics of environmental protection, low treatment cost and high efficiency, and further reduces the corrosion of microbial films on metals; and meanwhile, the heat exchange efficiency of a cooling water system can be improved, or the operating efficiency of a water treatment device can be improved.

Description

technical field [0001] The invention relates to an electromagnetic treatment technology for controlling the attachment of microbial film on the surface of water treatment equipment and pipelines in a microorganism existing system, belonging to the field of water treatment microorganism control. Background technique [0002] The condenser is an important device in the power generation process of the power plant. The cooling water is mostly surface water and recycled water, and these waters often contain a variety of microorganisms. The microorganisms grow and reproduce on the inner wall of the cooling pipe, which can corrode the pipe and cause accidents. The most common corrosive bacteria in the circulating cooling water system are sulfate reducing bacteria (SRB), which can reduce the sulfate in the water to sulfur ions during the growth and metabolism process, and promote the corrosion of metals. The microbial film formed on the wall of the cooling pipe not only affects the ...

Claims

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Application Information

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IPC IPC(8): C02F1/48
Inventor 葛红花许贺丽韩建勋金志浩林薇薇
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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