Case

Wastewater degradation test report of an environmental protection company

Wastewater degradation test report

1. Water information

Resource Company Environmental companies
contact
Water Ingredient Introduction Wastewater containing methyl phosphate, dimethyl phosphate and ethyl phosphate
COD >60000 TOC
Ammonia Total nitrogen
pH 5.34 Total phosphorus
Chloride ion concentration Salt content 60000以上
others
toxicity
Sample time
requirement COD ≤ 20000
Note


2. Experimental principle 

1.1 This experiment uses the principle of electrochemical catalytic oxidation, with the BDD electrode as the core reaction device, and finally converts the organic matter in the water sample into CO2 and H2O.

 

3. Experimental operation

3.1 Trial test

Take 900ml of water sample into the beaker, put it into the BDD electrode module, connect the power supply, adjust the current intensity to 8A, and start to degrade. During the degradation process, the water sample is stirred with a magnetic stirrer to make it uniform. Take samples at regular intervals, record current and voltage values, and measure temperature and pH.

 

3.2 Middle test

Electrolyzer type pilot plant; take 70L water sample, electrode area 0.624㎡, adjust pulse power average current 220A, frequency 12000Hz, duty cycle 60%, average voltage is 13.5V.

 

4. Experimental phenomenon

Before degradation, the water sample was basically colorless; a very small amount of foam was produced during the degradation process, and almost no precipitation was produced.

 

5. Results and analysis

  • Trial Test

Time/h Voltage /V Current/A BDD area /cm2 COD/ mg/L
0 4.75 220 150 67932
10 40601
14 32070
16 24840
18 20300

  • Middle test

 

Time/h Voltage

/V

 Current/A BDD area

/cm2

 COD/

mg/L
0 13.5 220 0.624 67932
11 44628
19 32153
27 16520
35 2363

 

6. Comparison of experimental results

Comparing the energy consumption per ton of water when calculating COD=20,000, considering the pilot test 25h, the pilot test energy consumption is 49.1% of the pilot test, and the efficiency is 2.0364 times that of the pilot test.

To control the stability of the water volume, the accuracy of the comparison experiment is pursued; the temperature of the pilot test water is controlled at about 50℃; if the evaporation of water does not need to be considered, adjusting the higher temperature can further increase the electrolysis efficiency.

1, Trial Test (Product: BDD Beaker trial Module)

 

2， Middle Test（Product: CT7 Electrolyzer Solution-PP）

 

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——–  Boromond Team

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