Automatic control system and method for treating heavy metal wastewater based on ion-exchange resin method

A technology of ion exchange resin and automatic control system, which is applied in the direction of ion exchange water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., and can solve the problems of frequent occurrence of excessive discharge events, etc.

Inactive Publication Date: 2014-05-21
SHENYANG INST OF AUTOMATION GUANGZHOU CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is simple and intuitive, but requires operators to check in real time, and excessive discharge events caused by human factors frequently occur

Method used

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  • Automatic control system and method for treating heavy metal wastewater based on ion-exchange resin method
  • Automatic control system and method for treating heavy metal wastewater based on ion-exchange resin method
  • Automatic control system and method for treating heavy metal wastewater based on ion-exchange resin method

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Embodiment

[0040] Such as figure 1 , figure 2 As shown, a process automatic control system for ion exchange treatment of heavy metal wastewater, an image collector, a color difference recognition instrument, a first transmitter, a controller, a second transmitter, a relay and a host computer; the image collector , the color difference recognition instrument, the first transmitter, the controller, the second transmitter and the host computer are sequentially connected, the transmitter is also connected to the relay, and the image collector and the color difference recognition instrument are connected through an optical cable;

[0041] The image collector is used to collect the color image of the ion exchange resin according to the set time interval, and transmit the collected color image to the color difference recognition instrument through the optical cable;

[0042] The color difference recognition instrument is used for feature extraction of the color image transmitted from the imag...

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PUM

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Abstract

The invention discloses an automatic control system and an automatic control method for treating heavy metal wastewater based on an ion-exchange resin method, wherein the system comprises an image collector, a color difference identifier, a first transmitter, a controller, a second transmitter, a relay and an upper computer; the image collector is used for collecting color images of the ion-exchange resin and transfers the color images to the color difference identifier, the color difference identifier extracts characteristics from the transferred color images and transmits the extracted characteristic values to the controller, the controller is used for carrying out comparative analysis on the received characteristic values and given reference contrast color characteristics, the analysis result is concluded and output through the transmitter, and finally, whether the resin needs to be regenerated is displayed on the upper computer and a regeneration program is executed through a valve which is controlled by the relay. The automatic control system and the automatic control method are capable of overcoming the problem that effluent exceeds standard due to lag of monitoring on the ion-exchange resin effluent, caused by an artificial reason; the computer is used for identifying the color change of the ion-exchange resin to determine an automatic saturation point, and therefore, stable and up-to-standard effluent quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an automatic control system and method for treating heavy metal wastewater based on an ion exchange resin method. Background technique [0002] In the electroplating wastewater treatment technology, the ion exchange resin method has the advantages of high removal efficiency, useful substances can be concentrated and recovered, relatively simple equipment, and easy operation, which makes this method widely used in practice. However, when the ion exchange resin method is used to treat heavy metal wastewater, the quality of the effluent water often exceeds the standard due to the hysteresis of the detection instrument and manual operation, which limits the popularization and promotion of the ion exchange resin method. With the improvement of national environmental protection standards, especially the improvement of heavy metal pollution discharge standards, continuous a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42C02F1/62
Inventor 郭高飞于广平李振伟刘洪江
Owner SHENYANG INST OF AUTOMATION GUANGZHOU CHINESE ACAD OF SCI
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