Fluorochemical Plant Wastewater Defluorination Project Cuts Fluoride from 15 ppm to below 1 ppm

Project Overview

A leading fluorochemical manufacturer needed a reliable way to meet increasingly strict fluoride discharge limits for its process wastewater. Its existing chemical precipitation process could not consistently guarantee the required water quality, so the plant looked for a polishing technology able to hold effluent fluoride below 1 ppm around the clock with minimal operator involvement.

Project Challenge

• Feed water fluoride concentration: 15 ppm
• Design treatment capacity: 20 m³/h
• Required effluent fluoride: < 1 ppm
• Continuous production schedule requiring stable, unattended operation

Sphelite Solution

Sphelite designed a two-stage defluorination process for the site. Wastewater first passes through chemical pretreatment, which removes the bulk of the fluoride load and protects the downstream media. The pretreated water then enters a polishing vessel filled with Sphelite high-selectivity defluorination resin. The resin adsorbs residual fluoride ions and brings the water to the target quality before discharge or reuse.

The system was delivered as a packaged, skid-mounted unit with automatic valve sequencing and in-situ regeneration, which kept installation time short and made day-to-day operation simple for the plant's existing water team.

Key Project Parameters

Results & Benefits

• Compliant effluent: fluoride stabilized below 1 ppm, meeting the discharge standard with a safety margin.
• Simple operation: automatic cycles reduced manual work and avoided human error.
• Low operating cost: efficient resin utilization and in-situ regeneration kept chemical and media consumption economical.
• Fast commissioning: the packaged design allowed the system to go online within weeks of delivery.
• Long media life: the polishing resin maintained stable capacity over many cycles.

Project Execution

Before delivery, Sphelite engineers carried out a full water quality analysis and on-site pilot test to confirm the resin loading rate and regeneration interval for the actual feed. The final system was installed in a compact footprint next to the existing wastewater line, so the plant did not need new civil works. Commissioning took only a few days, and the customer's own operators were trained on site to manage routine monitoring and regeneration cycles.

Why Sphelite

This project shows how Sphelite combines application know-how, high-performance resin technology and packaged system design to solve difficult industrial water treatment problems. From water analysis and pilot testing to commissioning and after-sales technical support, our engineers support every step of the project. If your plant faces a similar fluoride limit challenge, contact us to discuss a cost-effective defluorination solution tailored to your water quality and flow rate.