Cooperative drinking water purifying method and equipment combining active carbon fiber and electrodynamic process

Abstract

The present invention relates to the method and equipment for purifying drinking water. Electric field is applied to active carbon fiber filtering material, so that current will flow directly through active carbon fiber filtering material while water to be purified flows through the active carbon fiber filtering material, and under water is thus purified under the action of both electric field and flow field. Owing to the collision between pollutant and bacteria with active carbon fiber and direct current action on bacteria to destroy the cell membrane structure, the said method of the present invention can inhibit the growth of the bacteria and kill bacteria without throwing antiseptic.

Description

technical field [0001] The invention relates to a drinking water purification method and device, in particular to a method and equipment for synergistically purifying drinking water using activated carbon fiber and electrokinetics. Background technique [0002] Activated Carbon Fiber (ACF) is a new type of high-efficiency adsorption material developed after powdery and granular activated carbon. It has the characteristics of good formability, acid and alkali resistance, strong electrical conductivity and good chemical stability. According to different raw materials, it can be divided into cellulose-based, phenolic-based, polyacrylonitrile-based, asphalt-based, etc., and can be processed into various shapes, such as felt, yarn, honeycomb, and fiber bundles. The specific surface area of ​​activated carbon fiber is large, the typical value is 1000-2000m 2 / g, the pore structure is dominated by micropores, which are directly distributed on the surface of the fiber. During the a...

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Problems solved by technology

[0004] Due to the low concentration of organic pollutants in water, the adsorption rate of activated carbon fibers will decrease, and the residence time of water in household drinking water purifiers is very short, which is not conducive to the adsorption of activated carbon fibers.

In addition, the concentration of organic pollutants in water is very low, which will cause the corresponding adsorption amount of activated carbon fiber to reach the adsorption equilibrium point to be very small. Often, activated carbon fiber only exerts 10%-20% of its adsorption capacity and loses its adsorption capacity, so it is necessary to replace the activated carbon. fiber, causing great waste

[0005] Using activated carbon fiber to adsorb bacteria in water, the bacteria are not killed, but attached to the surface of the activated carbon fiber, and the bacteria can use the organic matter adsorbed on the activated carbon fiber to reproduce in large numbers. Once the bacteria form a biofilm on the surface of the activated carbon fiber, it will be very Difficult to kill, and very prone to bacterial leakage, endangering people's health

The use of silver-loaded activated carbon fibers or iodine-loaded activated carbon fibers can inhibit bacteria, but silver ions and iodine ions on silver-loaded activated carbon fibers and iodine-loaded activated carbon fibers are prone to leakage. Silver ions are heavy metal ions that are very harmful to the human body, while iodine ions It is an essential element for the human body, but if it is excessive, it will also cause great harm to the human body

The method of adding sterilant will lead to a greater hidden danger of sterilant leakage, and it is not advisable

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