Hydro Reserve Completes Successful Wastewater Recovery Testing For Major U.S. Paper Mill

Hydro Reserve, a leader in advanced wastewater treatment and recovery solutions, has successfully completed testing on wastewater from a major U.S. paper mill, demonstrating the effectiveness of its proprietary modified ultra-filtration technology in optimizing resource recovery and sustainability.

The testing focused on a critical aspect of the kraft pulping process, a widely used method for converting wood into paper. This process generates significant amounts of wastewater, including weak black liquor, a byproduct containing valuable lignin and inorganic chemicals. Traditionally, recovering useful materials from weak black liquor is an energy-intensive step in the kraft cycle, which involves cooking wood chips in a chemical solution to separate fibers and then recovering chemicals through evaporation and combustion.

By leveraging its cutting-edge modified ultra-filtration technology, Hydro Reserve achieved two key breakthroughs:

• Water Reuse & Heat Recovery: The system enabled efficient reuse of water within the mill while capturing and recovering heat from wastewater, reducing the plant’s overall thermal energy demand.
• Enhanced Solids Recovery: The technology significantly reduced the energy required to recover solids from the weak black liquor stream, offering a more sustainable and cost-effective approach to material recovery.

These findings mark a major advancement in improving energy efficiency and resource utilization in the paper industry. Hydro Reserve plans to release the full technical results in the coming weeks, providing deeper insights into the economic and environmental benefits of its water recovery approach for industrial applications.

About Hydro Reserve
Hydro Reserve specializes in containerized wastewater treatment solutions, offering leased equipment and services to industries seeking to reduce contaminants, lower operational costs, and enhance sustainability. The company’s proprietary technology enables advanced filtration, chemical recovery, and water reuse across multiple industries, including food and beverage, pulp and paper, and manufacturing.