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Series electrolytic cell system and its method for removing bromate in drinking water

An electrolytic cell and drinking water technology, applied in chemical instruments and methods, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of reducing system processing capacity, increasing post-processing procedures, and expensive electrode materials, etc., to achieve Improve practicability, fast response, no secondary pollution effect

Inactive Publication Date: 2011-12-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention is to solve the problem of reducing the system processing capacity of the existing method for reducing bromate generation, increasing the post-treatment procedure, removing the secondary pollution caused by the method of removing bromate, and removing the electrochemical method electrode material of bromate Expensive and unstable cathode technical problems, but provide a series electrolytic cell system and a method of using it to remove bromate in drinking water

Method used

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  • Series electrolytic cell system and its method for removing bromate in drinking water
  • Series electrolytic cell system and its method for removing bromate in drinking water
  • Series electrolytic cell system and its method for removing bromate in drinking water

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specific Embodiment approach 1

[0009] Specific implementation mode one: (refer to attached figure 1 , 2 and 3) the series electrolytic cell system of the present embodiment includes the first electrolytic cell 1, the second electrolytic cell 2, the first water tank 3, the first water pump 4, the second water pump 5, the middle water tank 6, the third water pump 7, the second Water tank 8 and gas collection device 9; wherein the first electrolytic cell 1 includes a first power supply 1-11, a first tank body 1-1, a first anode 1-3, a first cathode 1-4 and a first ion exchange membrane 1 -2, with graphite as the first cathode 1-4, with carbon felt as the first anode 1-3, the first ion exchange membrane 1-2 divides the first cell 1-1 into the first anode area 1-5 and The first cathode region 1-6, the first cathode 1-4, the first power supply 1-11 and the first anode 1-3 are connected with the first titanium wire lead 1-12, on the side wall of the first anode region 1-5 The lower part is provided with a first ...

specific Embodiment approach 2

[0011] Specific embodiment two: the method for removing bromate in drinking water by using the series electrolytic cell system described in specific embodiment one is carried out in the following steps: 1. The drinking water to be treated is fed from the first The second water inlet 1-9 of an electrolytic cell leads into the cathode area 1-6 of the first electrolytic cell 1, and the bromide ion concentration of the water to be treated is 0.1mg / L~2mg / L, and simultaneously the first water tank 3 The deionized water inside is passed into the first anode area 1-5 of the first electrolytic cell 1 by the first water pump 4, and second, the first power supply 1-11 applies a voltage of 1.3V to 8V, and the current density is controlled to be 1mA / cm 2 ~5mA / cm 2, the water in the first anode area 1-5 is discharged into the second water tank 8, and the water in the first cathode area 1-6 is discharged into the intermediate water tank 6; three, the water in the intermediate water tank 6 is...

specific Embodiment approach 3

[0013] Specific embodiment three: the difference between this embodiment and specific embodiment two is that in step one, the drinking water to be treated is fed from the cathode area water inlet 1-10 of the first electrolytic cell 1 at a speed of 5mL / min to 30mL / min. into the cathode zone 1-6 of the first electrolytic cell 1. Others are the same as in the second embodiment.

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Abstract

The invention relates to an electrolytic bath system in series and a method for removing bromate in drinking water by using the system thereof, the invention relates to an electrolytic bath system and the method for removing bromate in water. The invention solves the technical problems in present bromate generation minimizing methods of reduced system processing capability, increased post-treatment program, the secondary pollution generated in bromate removing method, expensive electrode material and unstable cathode in a bromate removing electrochemical method. The electrolytic bath system in series of the invention comprises two electrolytic baths in series, the electrolytic bath takes graphite as cathode and carbon felt as anode, an ion-exchange film divides a groove of the electrolytic bath into an anode region and a cathode region; the method comprises the following steps: drinking water required to be treated is introduced into the cathode region of a first electrolytic bath andreacted, water in the cathode region is introduced into the anode region of a second electrolytic bath and reacted, water in the anode region is flowed out, the process of removing bromate in drinking water can be finished. The removal rate of bromate is 75%-82%. The invention is used for treating drinking water.

Description

technical field [0001] The invention relates to an electrolytic cell system and a method for removing bromate in water. Background technique [0002] Bromate is a by-product of ozonation, which is caused by the oxidation of raw water containing bromide ions in the ozonation process 3 or OH · oxidation to generate HOBr and BrO ·, then HOBr and BrO · are O 3 Or OH · further oxidation to generate BrO 3 - . Bromate is designated as a potential carcinogen of level 2B internationally, and the WHO recommends that the maximum bromate content in drinking water be 25 μg / L. The U.S. Environmental Protection Agency (USEPA) stipulates that the maximum contamination level (MCL) of bromate at this stage is 10 μg / L. The new "Drinking Water Hygienic Standard" implemented in my country since July 2007 also stipulates for the first time that bromate in drinking water shall not exceed 10 μg / L. There are two ways to control bromate in water treatment, that is, to control the conditions to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F1/461
Inventor 崔福义王欢刘冬梅李同秦可娜邢学辞武扬
Owner HARBIN INST OF TECH
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