Reuse is a waste prevention measure that involves using products or components that are not waste for the same purpose for which they were originally designed.

Specific examples include:

  • The secondhand market
  • "Repair Centers" or "Repair Cafés," whether privately or municipally run

Repair Café

"Repair Cafés" are volunteer-run gatherings where participants work together to repair their broken items: small appliances, clothing, bicycles, toys, small furniture… Anything that’s broken is welcome and deserves a second life.

Green Event

A “Green Event” is an event that seeks to minimize its negative impact on the environment, local residents, and the climate. The “Green Events” initiative was created to reduce the environmental footprint of events held in Luxembourg by providing information, raising awareness, and offering support to organizers who wish to make their events more environmentally friendly.

The project was launched by the Ministry of the Environment, Climate, and Sustainable Development, and is coordinated by “Oekozenter Pafendall asbl” and SDK.

www.greenevents.lu

Thrift stores and social enterprises

  • Second-hand: stores that sell used goods, primarily clothing. Sales may take place in a physical store, temporarily at markets, or through online platforms.
  • Social shops: stores that sell used or donated goods at affordable prices, often run by local social services or charitable organizations.

Reuse should not be confused with preparation for reuse, which is a form of recycling and involves inspecting, cleaning, and repairing waste to restore it to its original use.

Example: Electrical and electronic devices classified as waste can be repaired and returned to circulation. The potential for reuse depends heavily on how easy they are to repair, a factor that must be taken into account from the product design stage onward, and on manufacturers’ responsibility.

Wastewater recycling

Until now, the water supply system in industrialized countries has been based on a “disposable” model. Precious drinking water is extracted, used, and then discharged into wastewater treatment plants. This means that while it is reintroduced into the water cycle by being released into a watercourse—usually a flowing one—it is not directly reused.

Scientists warn that, given climate change and the growing global population, this water supply system is no longer adequate. Just as in today’s waste management system, wastewater will need to be sorted by its intended use in the future. Wastewater could thus be viewed as a resource and serve a valuable purpose.

The goal is to reuse water and the substances contained in wastewater. Wastewater is classified into gray water, yellow water, brown water, and black water. Gray water is used for washing oneself or doing laundry. Yellow water is mixed with urine, and brown water with feces. Black water includes all wastewater that flows into the sewer system.

It makes sense to separate these types of water, as each can be used in different ways: yellow water can be turned into fertilizer, brown water can be used to generate energy, and gray water can easily be reused, for example to water plants or rinse laundry.

In Luxembourg, the installation of greywater recycling systems in homes and hotels is gradually becoming more widespread. However, this is only recommended if the system is planned during the building’s construction, as retrofitting is very costly. Greywater—from showers, baths, or sinks—is separated from other wastewater. In a water recycling system, this greywater is treated so that it can be reused for cleaning, watering, or flushing toilets.