Innovative Water Management

Re–Circulation and Re–Use: How Smart Water Comes to Life

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Some membrane system suppliers have now started to standardize their systems. Higher production volumes drive down the manufacturing costs for these plugand-play solutions which are used to purify service water and drinking water, and also for treatment of industrial wastewater. It takes minimal effort to connect the pre-assembled systems.

Recovery of energy and re-usable materials

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When there is direct contact, it is impossible to prevent production materials from contaminating the process water. As a result, the process water contains varying concentrations of contaminants. If a substance can be re-used, its recovery can make economic sense and also help to protect the environment.

Re–Using Valuable Substances in Waste Water

The French startup Magpie Polymers has developed a highly efficient filtration method for capturing re-usable substances even if they are only present in minute amounts. Various filters made of polymer beads are installed, and the metals form selective bonds with the beads. The technique is already being deployed at several European companies to filter out minute amounts of precious metals.

The chemical group Lanxess also provides technology for recovering re-usable materials. Ion exchangers function as selective adsorbers for fine purification of wastewater flows and process electrolytes. Heavy metals and other substances such as boric acid, chromate, arsenate, fluoride and ammonia in salt solutions can be selectively captured.

Turn Effluent into a Heat Source

Wastewater as a heat source has witnessed limited usage. In the past, utilization of this energy was seldom possible, one of the constraining factors being the 65°C flow temperature limit for heat pumps. Ochsner now markets high-temperature heat pumps with flow temperatures up to 100°C, opening the door to totally new industrial and commercial heat pump applications.

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