Toihan

Toihan is an independent expert company focusing on industrial wastewater treatment process control development. The company was established in 2014 as a spin-off from Aalto University Cleantech Research Group.

Our experience spans more than 50 full-scale wastewater treatment plants, allowing us to bring proven practices from across the industry directly into daily operations. At the core of our expertise and continuous development is our unique methodology that helps treatment plants improve environmental performance, increase operational transparency, and improve control quality.

Minimum effluent strategy

Get familiar with our methodology

A systematic approach that transforms operational knowledge into measurable environmental and business results.

Transparency

Understand the process dynamics

Together we build process transparency and knowledge that stays within your organization. An investment in Toihan is an investment in your people and process.

Continuous improvement

Learn and build expertise

Working alongside the customer’s people on real events and challenges, building their understanding of what is happening, and enabling them to learn from experience.

Smart control

Better foresight. Better control

Toihan Cloud extends visibility into future process conditions, giving advisory control support and more time to prepare and maintain stable treatment performance.

Toihan Cloud

Platform for intelligent process control

Bring process data, events, observations, analyses, history, and learning into a continuously developing information layer.

Framework for AI

WWTP-AI® is our framework for preparing wastewater treatment plants for the adoption of industrial artificial intelligence. AI is only as powerful as the knowledge behind it. Toihan Cloud is the foundational layer that captures, organizes, validates, and continuously enriches both explicit and tacit operational knowledge, enabling AI systems to connect and operate with confidence, accuracy, and context.

Legal notice