Action and Process Flow of Special Fluoride Remover for Desulfurization Wastewater
In industrial production processes, especially in highly polluting industries such as coal-fired power plants and steel plants, desulfurization processes are widely used to reduce sulfur dioxide (SO2) emissions. Although the desulfurization process has effectively controlled the discharge of SO2, it has also produced a large amount of desulfurization wastewater. These wastewater contains a variety of pollutants, among which fluoride (F) is one of the main pollution components.
The role of special fluoride removal agent for desulfurization wastewater
The main function of the special fluoride removal agent for desulfurization wastewater is to remove the fluoride ions in the water to prevent its adverse effects on the environment and organisms.
Action Principle
The desulfurization wastewater agent removes the fluoride ions from the water by chemical or physical methods. Common chemical methods include:
Chemical precipitation method: by adding calcium salt (such as lime) or aluminum salt (such as polymer aluminum) to the wastewater, these chemicals react with fluoride ions to form insoluble fluoride precipitation (such as calcium fluoride or aluminum fluoride), and then removed by flocculation, coagulation precipitation steps.
Adsorption method: the use of adsorbent with high surface area and special functional groups (such as activated carbon, zeolite, aluminum-based adsorbent, etc.), these adsorbent can effectively adsorb fluoride ions in water.
Special fluoride remover for desulfurization wastewater is a polymer, which can separate and precipitate from water fluoride ion adsorption, and remove COD, color, total phosphorus, SS and heavy metals in water.
Scope of application: photovoltaic wastewater, fluorine chemical industry, glass processing, coal chemical industry, pesticide wastewater, metal smelting, mine water, etc.
The process of fluoride removal treatment roughly has the following steps:
1. Pretreatment: Pretreat the desulfurization wastewater to remove suspended matter and large particle pollutants to ensure the subsequent treatment effect.
2. Add fluoride removal agent: add the right amount of fluoride removal agent in the wastewater, and fully stir, so that the fluoride removal agent and fluoride full contact reaction.
3. Precipitation separation: separate the resulting insoluble fluoride precipitates by gravity sedimentation or centrifugation separation.
4. Follow-up treatment: Further purify the treated wastewater, such as heavy metal removal, pH regulation, etc., to ensure that the wastewater discharge meets the standards.
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