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What Are The Hazards Of Phenol-containing Wastewater, And How To Deal With It?
- Jul 03, 2018 -

What are the hazards of phenol-containing wastewater, and how to deal with it?


The phenol-containing wastewater mainly comes from the industrial sectors such as coking plants, gas plants, petrochemical plants, and insulating materials plants, as well as the production process of petroleum cracking to ethylene, synthetic phenol, polyamide fiber, synthetic dyes, organic pesticides and phenolic resins. The phenol-containing wastewater mainly contains phenolic compounds such as phenol, cresol, xylenol and nitrocresol. A phenolic compound is a protoplasmic poison that causes the protein to coagulate.


When the concentration of phenol in water reaches 0.1-0.2mg/L, the fish meat has odor and can not be eaten: the mass concentration increases to 1mg/L, which will affect the fish to lay eggs, containing phenol 5-10mg/L, and the fish will be large. death. The presence of phenol in drinking water can affect human health. Even if the concentration of phenol in water is only 0.002mg/L, disinfection with chlorine will produce phenol odor.


The phenol-containing wastewater having a mass concentration of 1000 mg/L is generally referred to as a high-concentration phenol-containing wastewater, which is subjected to treatment after recovery of phenol. The phenol-containing wastewater with a mass concentration of less than 1000 mg/L is called a low concentration phenol-containing wastewater. This type of wastewater is usually recycled, and the phenol is concentrated and recovered for treatment. The methods for recovering phenol include solvent extraction, steam stripping, adsorption, closed loop, and the like. Wastewater containing a phenol concentration of less than 300 mg/L may be treated or discharged by biooxidation, chemical oxidation, or physicochemical oxidation.