Exploring Biosolids Management with Rob Thompson: Innovations at OC San
In the ever-evolving world of water management and sustainability, leaders like Rob Thompson are paving the way with innovative solutions. As the General Manager at OC San in California, Rob has made significant strides in biosolids management, a critical aspect of water treatment that faces increasing challenges globally. In this blog post, we delve into a recent conversation between Rob and Piers Clark on the Exec Exchange podcast, discussing the challenges and technological advances in biosolids management.
A Journey in Water Management
Rob Thompson has spent 30 illustrious years at OC San, rising through the ranks to become General Manager. His dedication to the sector is undeniable, and his approach to leadership is defined by a meticulous attention to detail. In his conversation with Piers Clark, Rob shares insights into balancing a demanding career with personal life, underscoring the importance of community involvement and environmental stewardship.
Biosolids Management: Current Challenges
Rob provides a comprehensive picture of the current challenges in managing biosolids in Southern California. The majority of OC San’s biosolids are used for agricultural reuse, some even transported to Arizona and the Central Valley. However, the process faces scrutiny over environmental concerns, including PFAS, microplastics, and the greenhouse gas emissions associated with methane production. As regulations tighten, current systems may face limitations, necessitating innovative solutions.
Innovative Solutions with Supercritical Water Oxidation
Taking center stage in OC San’s strategy is Supercritical Water Oxidation (SCWO), a promising technology for biosolids treatment. Supercritical Water Oxidation utilizes the fourth state of water, where water properties are altered under high temperature and pressure, leading to efficient biosolids breakdown. This technology transforms organic materials into clean water, carbon dioxide, and benign salts, eliminating viruses and bacteria. With its roots in chemical weapons disposal, SCWO offers a unique, energy-efficient solution for biosolids treatment. The partnership with 374Water, a company supported by the Gates Foundation and born out of Duke University research, is instrumental. They have developed a method of directly mixing superheated air with pressurized sludge, simplifying the technology and making it more feasible for widespread adoption. The forthcoming implementation of the world’s largest full-scale SCWO installation at OC San is a bold step forward in sustainable water management.
Exploring Alternatives: Deep Well Injection
OC San isn’t putting all its eggs in one basket. Rob also discusses deep well injection, an alternative approach under consideration. This method, successfully implemented at the City of Los Angeles’ Terminal Island Treatment Plant, involves injecting biosolids deep underground into former oil fields. This process not only sequesters carbon but also holds potential for biogas production through natural underground digestion.
De cara al futuro
Rob Thompson’s forward-thinking strategies highlight the importance of diversification in biosolids management, ensuring environmental compliance and energy efficiency. With SCWO set to launch in early 2026 and active exploration of deep well injection, OC San is at the forefront of innovation in the water sector.
As Rob reflects on his career, rooted in a childhood fascination with engineering, and shares personal anecdotes, including his emotional experience at his daughter’s wedding, his dedication to both his family and career shine through. His leadership is a testament to the impact of thoughtful, community-focused environmental stewardship.
Stay tuned for more updates on OC San’s pioneering efforts in water management technology, as they continue to tackle the pressing challenges of biosolid treatment with innovative solutions.