In the circular economy, waste becomes an asset, and a source of profit. Wastewater has many opportunities for generating profits, most typically by replacing the need to buy water or energy. For example:

Wastewater is often quite warm. A heat exchanger can recover the heat for space heating, water heating, or manufacturing processes. This is free energy.

Often, it’s possible to recover resources from wastewater that can either be used internally or sold. For example, some wastewater solids are used as ingredients in fertilizer.
Or, the clean water can be re-used either for the same processes or re- purposed elsewhere.

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