A Complete PCB Removal System for Transformer Oil

Polychlorinated biphenyls (PCBs) are among the most persistent industrial pollutants. Valued historically for stability and insulation, they were widely used—often as additives in transformer oil—until their toxic and carcinogenic effects became undeniable. The HERING PCB-RS Series PCB Removal System unites precision chemistry with engineering control to remove PCBs at source while restoring insulating performance. By combining PCB dechlorination with advanced transformer oil purification, operators achieve PCB-free, high-quality insulating oil at competitive lifecycle cost, supporting modern environmental compliance without compromising reliability or safety.

The PCB Problem

PCBs persist in equipment, storage tanks, and service fleets long after production bans. Cross-contamination—through reused hoses, mixed tanks, or legacy processing—keeps low-level PCBs circulating in transformer oil, creating ongoing risk. Because PCBs bioaccumulate and biomagnify, regulators worldwide demand documented control, verifiable analytics, and responsible waste management. Utilities and industries therefore need a field-proven, auditable pathway to eliminate PCBs and keep essential assets online: that is precisely what a best-in-class PCB Removal System delivers.

Health & Environmental Risks

PCBs are lipophilic, lodge in fatty tissues, and are linked to neurological, endocrine, and immune impacts. Even trace levels in transformer oil can trigger compliance violations, disposal challenges, and reputational exposure. Organizations increasingly anchor their ESG programs around measurable environmental compliance, demanding solutions that reduce hazardous inventories, minimize waste generation, and document end-to-end custody. Effective waste management plus validated removal—rather than dilution or disposal alone—is the sustainable answer.

Results Without Compromise

HERING’s PCB-RS Series integrates chemistry, automation, and oil-life engineering to deliver repeatable outcomes. In a single pass, PCBs are reduced from >2000 PPM to <1 PPM (lab detection limits), while oil recovery exceeds 99%. The result is PCB-free transformer oil suitable for direct reuse after transformer oil purification and regeneration—often meeting or surpassing virgin-oil benchmarks. Compared with incineration or landfill, this PCB Removal System preserves resources, lowers operating cost, and aligns with modern environmental compliance requirements and audit expectations.

PCB dechlorination + Regeneration, Optimized

The process begins with controlled PCB dechlorination using HERING’s DEHALO alkali dispersion, which targets chlorine bonds on PCB molecules and converts them into benign derivatives without forming dioxins or furans. Post-reaction, the oil proceeds through transformer oil purification and regeneration to remove acids, moisture, and oxidation by-products, restoring dielectric strength and chemical stability. This closed-loop approach turns contaminated stocks into a high-grade insulating medium, shrinking hazardous inventories and simplifying waste management to non-PCB industrial residues.

Safety-First Modular Architecture for Precision & Throughput

A degasifier conditions transformer oil below ~20 PPM water to prevent violent side reactions with sodium. A metered sodium-dispersion module (10 µm particles, 20–40% in mineral oil) ensures accurate dosing for efficient PCB dechlorination. A nitrogen module provides an inert blanket and pneumatic conveyance—no mechanical pumping of dispersion—enhancing plant safety and reliability. In the mixer, reaction completion typically occurs in ~20 minutes; an optional high-speed centrifuge then separates PCB-free oil from neutral sludge. The result: consistent transformer oil purification output at industrial scale, with streamlined waste management of non-PCB sludge.

Efficiency, Cost, Compliance

Unlike multi-pass or disposal-centric methods, the HERING PCB Removal System achieves <1 PPM in one circulation while recovering >99% of oil volume—cutting fresh-oil purchases and transport emissions. Operating costs can be as low as ~€0.15/L, and regeneration elevates insulating quality, extending oil life. For governance teams, the process supports auditable environmental compliance: documented chain-of-custody, certified PCB analytics, and by-products classified as standard industrial waste. In one integrated workflow, you combine PCB dechlorination, transformer oil purification, and responsible waste management.

From Grid Assets to Heavy Industry

Utilities, IPPs, and industrial operators use the HERING PCB-RS Series to recommission contaminated transformers without full oil replacement, stabilize outage windows, and standardize quality across fleets. Environmental contractors leverage the platform to execute turnkey PCB eradication programs with verifiable outcomes. If your objectives include eliminating PCB liability, preserving transformer oil value, and proving environmental compliance to regulators and stakeholders, HERING’s PCB Removal System provides an immediate, scalable path forward. Contact HERING VPT to discuss a tailored solution that unites PCB dechlorination, transformer oil purification, and best-practice waste management—all aligned to your technical standards and compliance goals.

For organizations committed to sustainability and safety, HERING VPT provides the proven technology and expertise to eliminate PCB risks while preserving valuable transformer oil. Contact us today to discuss tailored solutions for your operations.