From Waste to Water: Power Knot's New System Aims to Close the Loop

FREMONT, CA – June 29, 2026 – In a world grappling with resource scarcity and environmental pressures, the line between waste and resource is becoming increasingly blurred. Today, Power Knot LLC, a company known for its on-site food waste digesters, announced a significant step toward erasing that line entirely with the launch of its OGF™ organic filter system. The new technology is designed to take wastewater with high organic content—a costly and challenging byproduct for many industries—and treat it on-site, converting it into clean water for a variety of uses. It’s a move that positions the company not just as a waste management provider, but as a facilitator of the circular economy.

For years, facilities like large-scale commercial kitchens, food processing plants, and military bases have relied on Power Knot’s LFC biodigesters to aerobically break down food scraps into greywater, diverting tons of organic waste from landfills. But the effluent, while sewer-compliant, still represented a one-way trip down the drain. The OGF system aims to intercept that stream, along with other high-organic wastewater, and transform it into a valuable asset. By doing so, it promises to slash operational costs, reduce environmental footprints, and address the growing strain on fresh water supplies.

The Closed-Loop Revolution

The core innovation of the OGF system is its ability to decentralize and close the loop on water management. Traditionally, organizations pay significant fees to discharge high-strength organic wastewater into municipal sewer systems or have it hauled away for off-site treatment. This process is not only expensive but also carries a substantial carbon footprint from transportation and energy-intensive centralized treatment.

The OGF filter sidesteps this model by bringing the treatment plant to the source. Using what the company describes as advanced aerobic digestion, filtration, and advanced oxygen processes, the system purifies wastewater directly on the premises. This on-site approach offers a tangible solution to several pressing business challenges. It directly addresses the rising costs of waste disposal and helps companies meet increasingly stringent environmental regulations.

More importantly, it fundamentally reframes wastewater as a resource. According to Power Knot, the OGF system can produce three distinct grades of output water. The first is sewer-compliant water, meeting municipal standards for safe discharge. The second, reusable water, is clean enough for non-potable applications like irrigation, facility cleaning, or, in a truly circular fashion, as a fresh water input back into the company's own LFC biodigesters. The third and most ambitious grade is high-quality water that, after a final reverse osmosis step, meets industrial application standards and even the stringent requirements for potable drinking water.

This shift from a linear “dispose and forget” model to a circular “treat and reuse” one aligns with the growing corporate focus on Environmental, Social, and Governance (ESG) goals. For sustainability managers and operations executives, technologies that deliver both environmental benefits and economic efficiencies represent the holy grail of responsible business practice.

Beyond Compliance to Economic Advantage

While the environmental benefits are compelling, the economic case for the OGF system may be its most persuasive feature. For many businesses, wastewater is a significant and escalating line item on the balance sheet. By treating it on-site, the OGF promises a direct and measurable return on investment.

“The OGF complements our existing product family by closing the loop on waste water,” said Iain Milnes, President of Power Knot, in the official announcement. “This can reduce or eliminate the consumption of fresh water and provide output water suitable for irrigation, industrial applications, or municipal discharge.”

The financial calculus is straightforward. Eliminating disposal fees and reducing reliance on municipal fresh water supplies can lead to substantial operational savings. While Power Knot has not released specific ROI projections for the new OGF system, its existing LFC biodigesters are often marketed with a payback period of under two years. If the new filtration system can deliver similar returns, it could quickly move from being a capital expense to a strategic financial tool.

An industry analyst specializing in environmental technology noted that the market is ripe for such innovations. “We’re seeing a convergence of pressures—regulatory, economic, and social—that makes on-site treatment incredibly attractive,” the analyst commented anonymously. “It’s no longer just about compliance; it’s about operational resilience and cost control. A system that can reliably turn a waste liability into a water asset has a powerful value proposition, especially in water-stressed regions or industries with high water consumption.”

The Science of Scraps to Sips

The most groundbreaking claim associated with the new system is its potential, when paired with an LFC biodigester, to turn food waste into drinking water. This “scraps to sips” capability hinges on a multi-barrier treatment process. First, the LFC biodigester uses aerobic digestion to break down solid food waste into a nutrient-rich greywater. This effluent is then fed into the OGF system for a second round of advanced aerobic digestion and filtration. The final, critical step involves reverse osmosis (RO), a well-established purification technology that uses a semi-permeable membrane to remove a vast array of contaminants, including dissolved solids, bacteria, and viruses.

Scientifically, this multi-stage approach is sound. Advanced water reclamation facilities around the world use similar principles—combining biological treatment with membrane filtration and disinfection—to produce high-purity recycled water for potable reuse. However, the claim will undoubtedly face intense scrutiny and requires rigorous, independent verification to win public and regulatory trust.

Achieving drinking water standards, as defined by bodies like the U.S. Environmental Protection Agency (EPA) and the World Health Organization (WHO), is a high bar. Treatment must effectively remove not only conventional pollutants but also a complex array of “contaminants of emerging concern” (CECs), such as trace pharmaceuticals, microplastics, and chemicals from cleaning products that can find their way into waste streams. Validating the system’s ability to consistently remove these substances to safe levels will be crucial for its adoption in potable applications.

A Comprehensive Ecosystem for Waste

With the launch of the OGF filter, Power Knot is solidifying its strategy of providing an integrated, end-to-end solution for organic waste. The company already offers a suite of products that work together, from the LFC biodigesters that process solids to the LFC Cloud platform that provides data analytics and remote monitoring. The OGF system is the final piece of the puzzle, addressing the liquid effluent and creating a nearly self-sustaining ecosystem for waste and water management within a single facility.

“Power Knot can provide customers with a complete on site solution for both solid food waste and waste water,” Milnes emphasized. This holistic approach simplifies procurement, streamlines operations, and provides a single point of accountability for a critical facility function.

As industries worldwide seek to build more resilient and sustainable operations, the ability to manage essential resources like water at the source is becoming a strategic imperative. By offering a tangible pathway to convert a costly waste stream into a valuable resource, Power Knot’s new system represents a significant innovation at the intersection of technology and human need.