In chemical industrial wastewater containing phenol wastewater treatment method
Phenol is a kind of aromatic hydrocarbon oxygenated derivatives, the toxicity of wastewater containing phenol involves the growth of aquatic life and reproduction, pollution of drinking water, causing serious pollution of water bodies.
In chemical industrial wastewater containing phenol wastewater treatment methods generally divided into physical and chemical method, chemical method, biological method and other three categories.
Below, we introduce several kinds of phenol water treatment technology.
1, wet oxidation wet oxidation is under high temperature and high pressure, the use of oxidant (
Oxygen or air)
Inorganic oxide in the wastewater into carbon dioxide and water.
In the chemical industrial wastewater containing phenol wastewater treatment method in the treatment of phenol wastewater has good application prospect.
Using wet oxidation general requirements under the condition of high temperature and high pressure, high to the requirement of equipment material, also because of oxidation reaction conditions, to maintain the high temperature and high pressure is only suitable for small flow, high concentrations of wastewater treatment.
2, chemical oxidation, chemical oxidation method in dissolved state of phenolic substances in waste water is under the condition of the heating pressure, through chemical reaction was oxidized into WeiDu or non-toxic substances, or into the shape of the separation of the water easily, so as to achieve the purpose of removing.
In the chemical industrial wastewater containing phenol removing phenol wastewater treatment method, the antioxidant including air, potassium permanganate and chlorine, chlorine dioxide, sodium hypochlorite, ozone, hydrogen peroxide, etc.
3, biochemical treatment method and biological method is the use of microorganisms to remove phenol and phenolic compounds in wastewater, generally in the absence of high concentrations of toxic substances or under the condition of removing toxic substances used in advance, otherwise, phenol is toxic to bacteria.
In the chemical industrial wastewater containing phenol wastewater treatment method is effective and the low cost advantage, but management demand is high, must pay close attention to oily wastewater.
Biochemical treatment process including activated sludge method, fluidized bed, biological membrane method and biological contact oxidation process and so on, among them the most widely used activated sludge process, the treatment effect is good.
Source: information network