Method for automatically adjusting Fenton process parameters based on PH and ORP linkage

A technology of automatic adjustment and process parameters, applied in chemical instruments and methods, water treatment parameter control, neutralized water/sewage treatment, etc., can solve the problem of low COD degradation efficiency and achieve the effect of good COD degradation efficiency

Active Publication Date: 2021-06-11
湖州光正水质净化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This invention improves how well it removes harmful substances from polluted water by increasing its ability to break down organic compounds into smaller molecules called carbon dioxide (CO2) gas or biogases like methane CH4). By doing this, these gasses are released back into nature without causing damage for humans' health.

Problems solved by technology

The problem addressed in this patented solution relates to reducing the impact on aquatic ecosystem caused by traditional industrial wastes such as printed or dyed fabric during laundry production processes. Current pretreatments involve expensive equipment and complicated procedures involving multiple steps like adding different substances into the treated liquid before final processing.

Method used

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  • Method for automatically adjusting Fenton process parameters based on PH and ORP linkage
  • Method for automatically adjusting Fenton process parameters based on PH and ORP linkage
  • Method for automatically adjusting Fenton process parameters based on PH and ORP linkage

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Experimental program
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Effect test

Embodiment 1

[0047] A method for automatically adjusting Fenton process parameters based on PH and ORP linkage disclosed in the present application, comprising the following steps:

[0048] Step 1: The printing and dyeing textile wastewater (derived from the sewage discharged by a dyeing and finishing enterprise in an industrial park in Zhejiang) is subjected to the following pretreatments in sequence, hydrolytic acidification treatment, A2O method treatment, secondary sedimentation tank treatment, the water body in the secondary sedimentation tank Filtration treatment is carried out through a combined filter body. The pretreatment time is 5-6 hours. The pretreated sewage is pumped into the water quality adjustment tank for standby. The COD value of the wastewater in the water quality adjustment tank is tested to be 313mg / L, and the chroma is 161 times. SS index is 41mg / L;

[0049] Step 2, the wastewater in the water quality adjustment tank is pumped into the dosing mixing tank, and 12% s

Embodiment 2

[0055] A method for automatically adjusting Fenton process parameters based on PH and ORP linkage disclosed in the present application, comprising the following steps:

[0056] Step 1: The printing and dyeing textile wastewater (derived from the sewage discharged by a dyeing and finishing enterprise in an industrial park in Zhejiang) is subjected to the following pretreatments in sequence, hydrolytic acidification treatment, A2O method treatment, secondary sedimentation tank treatment, the water body in the secondary sedimentation tank Filtration treatment is carried out through a combined filter body. The pretreatment time is 5-6 hours. The pretreated sewage is pumped into the water quality adjustment tank for standby. The COD value of the wastewater in the water quality adjustment tank is tested to be 321mg / L, and the chroma is 163 times. SS index is 45mg / L;

[0057] Step 2, the wastewater in the water quality adjustment tank is pumped into the dosing mixing tank, and 12% s

Embodiment 3

[0063] A method for automatically adjusting Fenton process parameters based on PH and ORP linkage disclosed in the present application, comprising the following steps:

[0064] Step 1: The printing and dyeing textile wastewater (derived from the sewage discharged by a dyeing and finishing enterprise in an industrial park in Zhejiang) is subjected to the following pretreatments in sequence, hydrolytic acidification treatment, A2O method treatment, secondary sedimentation tank treatment, the water body in the secondary sedimentation tank Filtration treatment is carried out through a combined filter body. The pretreatment time is 5-6 hours. The pretreated sewage is pumped into the water quality adjustment tank for standby. The COD value of the wastewater in the water quality adjustment tank is tested to be 304 mg / L, and the chroma is 158 times. SS index is 45mg / L;

[0065] Step 2, the wastewater in the water quality adjustment tank is pumped into the dosing mixing tank, and 12%

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a method for automatically adjusting Fenton process parameters based on linkage of PH and ORP, and the method comprises the following steps: step 1, performing pretreatment, and testing the COD value of wastewater; step 2, pumping the wastewater in the water quality regulating tank into a dosing mixing tank, adding an acid regulating agent, controlling the pH value to be 4.0-4.5, adding a ferrous reagent, and uniformly mixing; step 3, transferring to a catalytic reaction tank, adding hydrogen peroxide, uniformly mixing, controlling the pH value to be 4.0-4.5 and the ORP value to be greater than or equal to 450mV, and carrying out Fenton oxidation reaction for 6-8 hours; step 4, detecting the chromaticity of the sewage treated by the Fenton oxidation reaction, and adding an aluminum sulfate solution for regulation and control; step 5, transferring to a neutralization tank, adding a calcium hydroxide solution, uniformly mixing, and controlling the pH value to be 6.0-6.5; and 6, transferring to a sedimentation tank, adding PAM, uniformly mixing, standing and precipitating, and testing the COD value of the purified water. According to the method, COD in the water body can be effectively removed, so that the sewage treatment efficiency and treatment quality are ensured.

Description

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Claims

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Application Information

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Owner 湖州光正水质净化有限公司
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