For more than six decades, REMI Process Plant & Machinery Limited has been at the forefront of industrial mixing technology, delivering engineered solutions to process industries across India and international markets. With over 50,000 successful installations, the company has built a strong reputation for manufacturing high-performance mixers, agitators, such as top entry, side entry, portable mixers for pharmaceuticals, chemicals, food processing, paints, oil & gas, mining, slurry handling applications and several other industries where precision mixing plays a critical role in production efficiency.
Building on this engineering legacy, REMI expanded its expertise into the renewable energy sector through 'Remi PTM Enviro Mixing Solutions’, a strategic collaboration with PTM Germany, a global technology leader in mixing systems for anaerobic digestion and biogas plants. The partnership combines PTM's advanced engineering and decades of biogas experience with REMI's world-class manufacturing infrastructure, engineering capabilities and nationwide service support.
The result is a unique proposition for the Indian market, internationally proven biogas mixing technology that is manufactured in India. Rather than depending entirely on imported equipment, Indian biogas developers now have access to sophisticated, application-specific mixing systems backed by local manufacturing, faster delivery, readily available spare parts and responsive technical support. This not only supports the vision of ‘Atmanirbhar Bharat’ but also strengthens India's capability to manufacture complex process equipment for one of its fastest-growing renewable energy sectors.
Solving Critical Challenges in India's CBG Industry
India's compressed biogas (CBG) sector is witnessing unprecedented growth under initiatives such as SATAT. However, as plant capacities increase and feedstocks become more diverse, from agricultural residues and municipal waste to industrial sludge, the importance of effective mixing has become increasingly evident.
Many digesters continue to experience sedimentation, floating layers, poor substrate circulation and uneven microbial activity, all of which reduce methane yield, increase power consumption and affect long-term plant reliability.
Remi PTM addresses these challenges through process-engineered mixing solutions designed specifically for anaerobic digestion. Instead of viewing mixers as standalone mechanical equipment, the company approaches every project by understanding the biological and hydraulic behaviour inside the digester. We also study the process parameters & rheological behavior of slurry formed after feedstock addition into the tank. That hydrodynamics helps us to design effective mixer for that application.
"Each project is evaluated through a detailed assessment of hydraulic requirements before determining mixer configuration, propeller geometry, installation angle and power input. The objective is not to install more mixing power, but to create controlled circulation uniform patterns over the adjacent layers of fluid that keep biomass uniformly suspended while consuming the least possible energy”, says Rishabh Saraf, Director.
This engineering-led approach enables customers to achieve stable biological conditions, improved methane generation, lower operating costs and greater process reliability.
Manufacturing Advanced Biogas Mixers in India
One of Remi PTM's biggest differentiators is its ability to manufacture technologically advanced biogas mixers in-house in India using globally proven designs and stringent quality standards. Its portfolio includes Submersible Mixers, Side Entry Mixers, Inclined Shaft Mixers and Top Entry Mixers, each developed to suit different digester configurations, substrate characteristics and process requirements. Rather than offering standardized equipment, every solution is engineered to achieve optimum hydraulic performance while minimizing energy consumption.
The company's manufacturing expertise is backed by REMI's decades of experience in industrial mixing and precision engineering. Every mixer is produced using robust construction, wear-resistant materials and advanced propeller designs capable of handling abrasive feedstocks such as agricultural residues, organic waste and sludge under continuous operating conditions.
Customers benefit not only from internationally benchmarked technology but also from shorter project timelines, easier installation, faster service response and readily available spare parts, advantages that are particularly valuable in India's rapidly expanding CBG ecosystem.
Engineering the Future of Sustainable Biogas Plants
Innovation continues to drive Remi PTM's growth strategy. The company leverages advanced engineering tools such as Computational Fluid Dynamics (CFD) to analyse flow patterns, optimize propeller geometry and determine ideal mixer placement before installation. This scientific approach enables the development of application-specific solutions that eliminate dead zones, prevent sedimentation and maximize biological efficiency across a wide range of biogas applications.
One of Remi PTM's biggest differentiators is its ability to manufacture technologically advanced biogas mixers in-house in India using globally proven designs and stringent quality standards
Looking ahead, Remi PTM Enviro Mixing Solutions aims to strengthen its position as a technology partner for EPC contractors, consultants and plant developers by continuously investing in research, engineering and product innovation. By combining REMI's proven manufacturing excellence with PTM Germany's specialized expertise, the company is helping build a stronger domestic manufacturing ecosystem while supporting India's transition towards cleaner and more sustainable energy.
For Remi PTM, success is measured not simply by the number of mixers manufactured & delivered, but by enabling biogas plants to operate more efficiently, generate higher methane yields and contribute to a more sustainable energy future through advanced mixing technology engineered and manufactured in India.
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