Challenge

A landfill facility undergoing expansion required supplemental soil vapor extraction (SVE) and vapor control services to support its existing vapor recovery system. As new SVE wells were installed along the periphery of the plant, the site’s legacy blowers could no longer maintain the required vacuum levels, and the existing flares lacked sufficient thermal capacity to destroy the high volumes of methane gas being extracted.

The customer needed a custom-engineered vapor control solution capable of:

• Maintaining a vacuum of 50 inches of water column (INWC) on the SVE header

• Processing high-moisture, high-solids, and highly combustible landfill gas

• Achieving full regulatory compliance for methane and VOC emissions

This project presented unique challenges associated with landfill gas control technologies, including the need for moisture separation, solids filtration, and a safely managed inert vapor stream.

Solution

Envent Corporation designed and deployed a turnkey system for landfill vapor mitigation and soil vapor extraction, leveraging both proprietary equipment and industry-best engineering:

• A specialized SVE blower system, capable of 60 INWC and 2,500 CFM, equipped with spark-resistant housing, explosion-proof electrical components, and continuous-duty construction

• The deployment of an EMECS 70—a direct-fired mobile thermal oxidizer with a 70 MMBTU/hr thermal capacity—ideal for handling pressurized, inert, and high-BTU vapor streams without the addition of dilution air

• Inline liquid knockout pots, solid separation filters, and an automated liquid drain system enabled continuous operation without shutdowns due to condensate accumulation

• Full 24/7 on-site operation by Envent technicians, with real-time compliance monitoring, safety logging, and support to ensure adherence to local, state, and federal air quality regulations

Benefit

Envent’s engineered solution allowed the landfill to maintain environmental compliance, avoid costly violations, and continue full-capacity operations during a critical site expansion. By combining soil vapor extraction, methane vapor control, and thermal oxidation in a fully integrated system, Envent eliminated the plant’s risk of uncontrolled emissions and created a safer working environment for both personnel and the surrounding community.

This project demonstrates Envent’s leadership in landfill vapor control, emission control services, and mobile thermal oxidizer deployment—delivering scalable, regulatory-compliant results in even the most complex vapor management scenarios.