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Pulsed plasma catalytic means and method for drinking water safety disinfection

A pulsed plasma and catalytic device technology, applied in the field of water treatment, can solve the problems of low utilization rate of active substances and energy, low bacterial concentration, etc., and achieve the advantages of improving sterilization effect, improving productivity and utilization rate, and reducing operating cost. Effect

Inactive Publication Date: 2009-04-29
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the concentration of bacteria in drinking water is very low, and the utilization rate of active substances and energy generated by pulsed plasma discharge is not high.

Method used

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  • Pulsed plasma catalytic means and method for drinking water safety disinfection
  • Pulsed plasma catalytic means and method for drinking water safety disinfection

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Embodiment

[0018] Adopt pulse plasma catalytic device of the present invention to disinfect drinking water, the initial concentration of bacteria in drinking water is 10 3 CFU / ml, the initial pH is 6.4, and the conductivity is 250 μs / cm. The operating parameters of the high-voltage pulse power supply used are: peak voltage - 3400V, pulse width 100μs. The concentration of platinum-loaded activated carbon is 10g / L, the air aeration method is adopted, and the aeration intensity is 667m 3 (m 3 h) -1 . The processing time is 150s.

[0019] figure 2 It is a transmission electron micrograph of Escherichia coli, wherein (a) and (c) are different sections of untreated bacteria, and (b) and (d) are corresponding section views of bacteria treated by the device of the present invention.

[0020] It can be seen from the figure that the Escherichia coli cells before treatment (figures a and c) have a complete structure and are full. However, the cell wall of Escherichia coli treated by the de...

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PUM

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Abstract

The invention relates to a device and a method used for safe disinfection of drinking water, wherein the device comprises an insulating cylindrical reactor with a cover, a pulse power supply and an aeration device for aerating air or oxygen, wherein the center of the reactor cover is provided with a needle electrode, a cylinder electrode is attached to the inner wall of the reactor, the cylinder electrode and the needle electrode are respectively connected with an anode and a cathode of the pulse power supply, the reactor cover is provided with a vent hole, and the bottom of the reactor is provided with an air inlet which is connected with the aeration device. The device has simple structure and convenient operation, which can fluidify active carbon through aeration. The active carbon can be enriched with bacteria, and a catalyst loaded on the surface of the active carbon can effectively improve the yield and utilization rate of the active substances when a pulse plasma discharges, thus reducing the operational cost.

Description

technical field [0001] The invention relates to a device and method for safe disinfection of drinking water, belonging to the technical field of water treatment. Background technique [0002] In recent years, the pollution of drinking water sources in our country has been increasing and deteriorating day by day, which has brought great harm to human health. At present, the water purification process of most water plants still stays in the traditional process of "flocculation-sedimentation-filtration-chlorine disinfection", mainly for the purpose of removing turbidity, suspended solids, color and pathogenic bacteria in water, especially for pathogenic bacteria and organic matter in water It is the dissolved organic matter that cannot be effectively removed. The presence of organic matter, on the one hand, will react with chlorine in the process of chlorination and disinfection to generate disinfection by-products (DBPs), such as trihalomethanes (THMs), haloacetic acids (HAAs...

Claims

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Application Information

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IPC IPC(8): C02F1/467
Inventor 雷乐成张兴旺辛青古励
Owner ZHEJIANG UNIV
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