Massachusetts Wastewater Practice Exam

Electrodialysis is primarily utilized in which of the following facilities?

1. Canneries

2. Pulp Mills

3. Electroplating facilities

4. Textile factories

The correct answer is: Electroplating facilities

Electrodialysis is a process that uses electrically charged membranes to separate ions from solutions, making it particularly suitable for applications where the removal of salts and other charged substances is necessary. In electroplating facilities, the process is employed to treat wastewater generated during metal finishing processes, where metal ions need to be removed to avoid contamination of the water and comply with environmental regulations. Given that electroplating involves the deposition of metals onto surfaces using electrolytic solutions, the treatment of wastewater in these facilities is critical. Electrodialysis effectively reduces the concentration of metal ions and other contaminants, allowing for better recycling of water and obeying strict discharge requirements. This makes it an essential technology in preserving water resources and minimizing environmental impact within electroplating operations. Other facilities mentioned may have different wastewater treatment needs that do not align with the unique functions of electrodialysis, which primarily targets ion removal to recover valuable metals or meet regulatory standards.