Inspirational pilot #12

IPL12 – Greywater recycling and heat recovery at building level (Berlin, Germany)

Decentralized treatment and reuse of light greywater for toilet flushing and heat recovery for water heating

TRL: 9

TRL: 6

SCALE: B

SYSTEM CONCEPT

  • Greywater recycling with biological and UV treatment in basement

  • Local reuse with second pipe network for toilet flushing or urban irrigation

  • Heat recovery from influent greywater for hot water supply

KEY BENEFITS

Circular reuse of water and heat energy at building level

STRATEGIC INTEGRATION

Demonstration of decentralized water and energy reuse as an economic option for new and existing buildings in dense areas

SOCIAL ENGAGEMENT

Involvement of residents, housing associations, building planners and local authorities for higher acceptance and scaling

REGULATORY FRAMEWORK

Ensuring compliance with hygienic standards for toilet flush water and new standards for urban irrigation

CONTACT POINT