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Electrochemical test device and method for corrosion of reclaimed water pipeline system under flow system

A technology for testing devices and piping systems, applied in the direction of measuring devices, weather resistance/light resistance/corrosion resistance, scientific instruments, etc., can solve the problem of affecting the determination of corrosion mechanism, can not better simulate the flow state of pipelines, irregular, intermittent, etc. question

Active Publication Date: 2020-10-23
TIANJIN UNIV
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Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the present invention aims to overcome the defects that the traditional annular reactor device can only conduct irregular and intermittent sampling analysis, which affects the determination of the corrosion mechanism of the specific process; and the static electrochemical test device cannot be better. To simulate the defects of the actual pipeline flow state, provide a long-term real-time, non-destructive electrochemical test device, and then assist the intermittent sampling test results, which is conducive to the analysis of the corrosion mechanism of the reclaimed water pipeline system under the flow system

Method used

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  • Electrochemical test device and method for corrosion of reclaimed water pipeline system under flow system
  • Electrochemical test device and method for corrosion of reclaimed water pipeline system under flow system
  • Electrochemical test device and method for corrosion of reclaimed water pipeline system under flow system

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Embodiment 1

[0040] In "Urban Sewage Recycling-Urban Miscellaneous Water Quality", the amount of residual chlorine in the clean water pool entering the pipe network after 30 minutes of contact is regulated as ≥1.0mg / L, and the amount of residual chlorine at the end of the pipe network is required to be ≥0.2mg / L , due to the high concentration of AOC and suspended solids in reclaimed water, resulting in a large amount of chlorine consumption, especially in long-distance pipeline transportation, it is difficult to ensure the residual chlorine at the end of the pipeline network, resulting in a large number of microbial reproduction. Therefore, this subject carried out three concentrations of NaClO and ClO in the influent respectively 1mg / L, 2mg / L and 4mg / L. 2 Disinfectants were tested for 30 days each, and the diversity of microorganisms in the corrosion scale was measured by means of microbial high-throughput sequencing, and the corrosion mechanism of the regenerated water pipeline in the flo...

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Abstract

The present invention relates to an electrochemical test apparatus for the corrosion on a reclaimed water pipeline system in a flowing system. In the prior art, the traditional method can affect the specific process corrosion mechanism determination, and the static electrochemical test device cannot well simulate actual pipeline flowing condition. In order to overcome the defect in the prior art, the invention provides the long-term real-time nondestructive electrochemical test apparatus so as to assist the intermittent sampling test result, such that the corrosion mechanism of the reclaimed water pipeline system in the flowing system can be easily analyzed. The technical scheme of the present invention is that the electrochemical test apparatus comprises a nodular cast iron working electrode, an Ag / AgCl reference electrode, a platinum sheet auxiliary electrode having a purity of 99.99%, a supported annular reactor having a hole on the outer wall, and a motor. The apparatus and the method of the present invention are mainly used for the electrochemical test of the corrosion on the reclaimed water pipeline system.

Description

technical field [0001] The invention relates to an electrochemical testing device for the corrosion of the reclaimed water pipeline system under the flow system, which can be used for real-time and non-destructive monitoring of the corrosion mechanism of the pipeline under the flow system. Specifically, it relates to an electrochemical test device for the corrosion of the regenerated water pipeline system under the flow system. Background technique [0002] Electrochemical method is an important method to study the corrosion process of metals. It aims to reveal the corrosion mechanism and explore the corrosion law by studying the electrochemical change process of the metal / electrolyte interface (electric double layer). Electrochemical corrosion measurement techniques have many advantages over other physical or chemical research methods. First of all, it is an "in-situ" measurement technology that will not damage and destroy the working electrode; at the same time, its test ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/02
CPCG01N17/02
Inventor 田一梅张海亚宋雅荣陈灏琳张茹芳
Owner TIANJIN UNIV
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