Application of defluorination agents

Currently, the commonly used methods for removing fluoride from wastewater and industrial effluents include precipitation, adsorption, coagulation and sedimentation, reverse osmosis, ion exchange, and electrodialysis. These methods have varying degrees of advantages and disadvantages in terms of cost, effectiveness, process complexity, and frequency of equipment replacement.

As emission standards become increasingly stringent, the corresponding treatment technologies also need to be upgraded and iterated. Industrial wastewater treatment urgently requires a stable technology capable of deeply removing fluorine. To address this need, Qingke Environmental Protection has launched a highly effective deep-fluoride-removal agent.

The defluorination agent developed by Qingke Environmental Protection is a specialized chemical agent designed for the advanced treatment of fluoride-containing wastewater. It is particularly suitable for scenarios where lime and calcium chloride methods fail to achieve thorough fluoride removal, necessitating subsequent advanced defluorination steps. Through mechanisms such as colloidal adsorption, ion exchange, and chelation precipitation, this defluorination agent can effectively reduce fluoride levels in water. In response to the stricter emission standards for fluoride in China, this agent can ensure that fluoride concentrations in discharged wastewater fall below 1 mg/L.

Reaction principle

Through mechanisms such as colloidal adsorption, ion exchange, and chelation precipitation by the defluorination agent, the agent reacts with fluoride ions in the water, forming a precipitate that is then removed.

Advantage 1: Deep fluoride removal, with effluent concentrations below 1 ppm, meeting the fluoride removal and emission standard requirements of various industries.

Advantage 2: The process is simple—simply replacing the chemical agent or adding a flocculation reaction and sedimentation tank is sufficient to meet the process requirements.

Advantage 3: Low chemical costs—compared to lime calcium salts, the dosage required is lower, offering high cost-effectiveness.

Advantage 4: Low sludge volume—compared to lime-calcium salts, sludge production is reduced by 30-50%, thereby lowering sludge disposal costs.

Application areas

Suitable for the advanced treatment of industrial wastewater from coal-fired thermal power plants, coal chemical industry, coking wastewater, stainless steel cleaning, glass, photovoltaics, rare earths, metallurgy, mining, aluminum and aluminum products, as well as metal surface treatments. Also applicable to the end-of-pipe advanced treatment of various types of industrial wastewater from semiconductor manufacturing, panel production, fertilizer, chemical industry, and electroplating.