Fluorine Containing Wastewater Treatment in the Circuit Board Industry

Fluoride is widely present in nature, often found in wastewater from non-ferrous metals, steel and aluminum processing, coke, glass, electronics, electroplating, flower fertilizers, pesticide factories, and fluorine-containing minerals. Fluoride pollution is a global problem, with fluoride levels in normal drinking water ranging from 0.5 to 1.0 mg/L. Fluoride levels exceeding 1.0 mg/L can cause fluorosis, and severe cases may lead to fluorosis.

Industrial wastewater from certain specific industries also contains high concentrations of fluoride ions, which urgently need to be effectively treated.

The treatment of fluorine-containing drinking water and industrial wastewater is still an unresolved issue in China and many countries around the world. Currently, methods for fluoride removal include coagulation and sedimentation, adsorption filtration, electrocoagulation, electrodialysis, and reverse osmosis. However, the treatment of fluorine-containing wastewater generally faces problems such as unstable effluent quality, excessive use of chemicals, high sludge production, and high moisture content.

In order to meet the needs of enterprises for efficient, simple, and low-cost treatment of fluorine-containing wastewater, the adsorption method developed by Haipu based on special adsorption materials has significant application advantages in operating costs, operating efficiency, safety, and avoiding secondary pollution compared to other defluorination technologies.

The special adsorbent material with strong anti-interference ion resistance, stable performance, and long-term reusability effectively solves the problems of limited adsorption capacity and frequent regeneration of most adsorbents. The process using this product can be applied to the treatment of drinking water, industrial wastewater, and industrial waste liquid with different fluoride concentrations and engineering scales.

Based on practical and feasible nano hybrid fluoride removal adsorbent products and their supporting combination processes, Haipu has helped multiple customers meet the treatment needs of fluorine-containing wastewater.

Application Case 1 of Nano Hybrid Fluoride Removal Adsorbent

A mining enterprise produces groundwater with a fluoride content of about 1.4 mg/L during the process of mining ore. The enterprise requires that the fluoride content in the treated wastewater be less than 0.5 mg/L.

The experimental treatment effect shows that using Haipu nano hybrid fluoride removal adsorbent products for treatment, the fluoride ion removal rate in wastewater remains stable at over 92%, and the fluoride content in effluent can be controlled below 0.5 mg/L.

Keeping a certain safety margin while ensuring compliance with customer requirements can effectively prevent water quality fluctuations in the incoming wastewater from causing substandard effluent.

Application Cases of Nano Hybrid Fluoride Removal Adsorbents 2

A company produces wastewater with a fluoride content of around 300 mg/L, and requires that the fluoride content in the treated wastewater be less than 10.0 mg/L.

The experiment used Haipu nano hybrid fluoride removal adsorbent products for treatment, and the fluoride ion removal rate in the wastewater remained stable at over 96%. The fluoride content in the effluent was less than 10.0 mg/L.

Application Cases of Nano Hybrid Fluoride Removal Adsorbents 3

A company produces 100 tons/day of wastewater with a pH of 9.5 and a fluoride content of 10.5mg/L during the production process, with a treatment requirement of ≤ 1mg/L.

For this purpose, our company uses nano hybrid fluoride removal adsorbent products to adsorb and separate fluoride ions in drinking water. The fluoride content after adsorption treatment is significantly reduced, which meets the customer's treatment requirements for this indicator.

The advantages of Haipu special adsorption treatment for fluorine-containing wastewater

The advantages of using adsorption method to treat fluorine-containing wastewater are as follows:

(1) Efficiently remove fluoride from wastewater with high removal efficiency, strictly control the concentration of fluoride in the treated wastewater, and keep the fluoride content below 0.5 mg/L;

(2) It can be implemented in module component form, flexibly adjusted according to production capacity, and easy to install;

(3) The process is relatively efficient and practical, and the amount of sediment is relatively small.