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Determination of total organic carbon in phenolamine recovery wastewater by ultraviolet oxidation technology (CAT#: STEM-PPA-0141-LJX)

Introduction

The wastewater of pulverized coal pressurized gasification is mainly organic wastewater produced in the process of gas washing, cooling and purification. The wastewater contains a lot of phenols, nitrogenous aromatic hydrocarbons and other heterocyclic organic pollutants. In industrial production, the combined process of phenol ammonia recovery and biochemical treatment is used to treat coal gasification wastewater, which not only recovers useful substances in wastewater but also reduces the subsequent treatment load. The total organic carbon in phenolamine recovery wastewater can be determined and treated by UV catalytic oxidation method.




Principle

The principle of ultraviolet oxidation method is as follows: Using ultraviolet light to illuminate the water sample to be tested, the water will decompose into hydroxyl and hydrogen groups. The hydroxyl group combines with the oxide to produce CO2 and water, and the total organic carbon content is calculated by measuring the newly generated CO2. When using ultraviolet oxidation method, the oxidation capacity can be improved by adding titanium dioxide, persulfate, etc. The advantage of ultraviolet oxidation method is high oxidation efficiency and simple maintenance, but the disadvantage is that the UV lamp needs to be replaced regularly.

Applications

For the determination of total organic carbon in liquids

Procedure

1. Ultraviolet light illuminates the water sample
2. The water sample is oxidized to produce CO2 and water
3. CO2 content was determined by infrared absorption method
4. Calculate the total organic carbon in the water sample by CO2 content

Materials

• Sample Type:
Phenolamine recovery wastewater

Notes

UV lamps need to be replaced regularly.
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