Wastewater is not just a residual stream but also a source of valuable resources. Many water streams contain nutrients, metals, or organic compounds that can be recovered and reused with the right technologies. Examples include recovering phosphate in the form of struvite for fertiliser, separating cellulose from wastewater for biobased materials, recovering heavy metals such as copper or zinc for industrial applications, and extracting indigo as a dye for the textile sector. By treating wastewater as a resource, we take a decisive step toward a circular water cycle in which waste is prevented and value is preserved.

The pressure on natural resources and the need to close material loops are making reuse increasingly important. Recovering substances from water streams offers a double benefit: it reduces environmental impact and yields valuable resources that can be reintroduced into the value chain. At the same time, stricter requirements on emissions and discharges are making reuse an increasingly natural component of sustainable water management.

Cantech supports organisations in developing solutions for resource recovery from water streams.

• We map out composition and opportunities: which substances are present, in what quantities, and with what recovery potential.
• We provide advice on the most suitable recovery strategy.
• We design installations or process modifications that enable residual streams to be converted into new products or raw materials.

Our designs are practically applicable and aligned with operational processes and legal frameworks, ensuring that reuse is not only technically feasible but also immediately implementable.

We combine in‑depth knowledge of innovative treatment technologies with expertise in circular resource recovery and current regulations. This enables us to develop solutions that match a wide range of water streams, from industrial process water to municipal wastewater.

Recovering resources from water contributes to a circular economy, reduces dependence on primary raw materials, and lowers environmental impact. In this way, wastewater shifts from a cost factor to an opportunity.

Curious what this could mean for your organisation? Together with you, we advise on and design the solution that best fits your water flows and circular ambitions.