Projekti eesmärgiks on koostöös ettevõtetega töötada välja ja katsetada töökindlat väikese energiatarbega heitveepuhastus-kompaktsüsteemi, mida saaks kasutada piiratud maakasutusega ekstreemsetes loodusoludes (alpiklubid, rannikud, karstialad, kaitsealad) paiknevates turismiasutustes reovee puhastamiseks. „Halli vee" puhastamise tehniline lahendus on TÜ poolne panus projekti.
In the SANBOX project a group of 5 European SMEs, all active in the market for decentralised wastewater systems, intends to develop an innovative, compact wastewater treatment system to serve the growing market for upgraded sanitation facilities for remote located tourist facilities such as mountain lodges or buildings in sensitive coastal and karst areas. To meet this demand the SMEs came up with a vision of a compact, low energy consuming, source separating and high performance wastewater treatment and handling system that is adapted to the specific end-user requirements. Due to limited own resources for research and innovation the SMEs intend to subcontract 4 highly qualified RTD performers to perform the needed research to develop the technical components of the system. The new system (SANBOX) includes innovative modules for blackwater and greywater treatment and an evapotranspiration system. In the final stage of the project three specific SANBOX prototypes tailored for three different target markets will be assembled and tested.. The prototype testing involves two end-users the Swiss Alpine Club and the Soline at Piran Saline Natural Park in Slovenia. This project provides the end-users an expected "zero-emission" solution regarding blackwater effluents and swimming water quality regarding greywater effluents, while the SMEs receive important research base as well as and user feedback for the development of the commercial product and dissemination of the results. The main task of research & development for the University of Tartu team is to elaborate and test a reliable system for the greywater treatment.