Developing a planning support tool for re-using nutrients from urban sanitation in agriculture

The overall objectives of this project is to develop a planning and design tool for implementing sanitation systems with zero nutrient discharge to the coastal environment by re-using treated domestic waste (water) and other potentially available and re-usable waste (mainly from tourism and food production activities) in agriculture and aquaculture. The island of St. Eustatius will serve as a case study to develop, apply and validate this tool. Due to its small size, St. Eustatius is well suited for this task. Sub-objectives: To assess the current practice of waste water and waste management, agriculture and aquaculture on St. Eustatius and to identify future development trends; To analyse and design possible development scenarios for St. Eustatius and to assess their effect in terms of improving the nutrient-water management and agricultural / aquacultural practice; To quantify the nutrient flows within and to and from the island, including nutrient losses to the marine environment through erosion and run-off; To recommend the optimal mix of nutrient, energy and water recovery technologies in combination with agricultural/aquacultural practices, ensuring sustainability, self sufficiency and protection of (aquatic) ecosystems.

The project is being undertaken by Indra Firmasyah of the Environmental Technology group. She is supervised by Prof.dr. G. Zeeman, and co-supervised by Dr.ir. Gerrit-Jan Carsjens of the Land Use Planning group. The project leader is Dr. Marc Spiller. The project is scheduled to last from February 2013 to January 2017.