SymbioCity unlocks synergies between urban systems to save resources while driving growth.

Water supply and sanitation

No more water down the drain

Modern purification technology can turn household wastewater into drinking water. But we can go even further, using wastewater and household biowaste together to produce biogas. Unlock these synergies with SymbioCity. 

We tend to regard sewage water as waste. But there’s a bigger picture that offers great potential. Identifying and unlocking the synergies between water use and other urban systems is not only good for the environment but can be highly profitable, too. 

Wastewater as a resource

  • Grey and black water mixed with household biowaste can be used to make biogas and then upgraded for use as vehicle fuel or in heating and electricity generation.
  • Bioresidue left after fermentation to biogas is an agricultural nutrient that can reduce the use of artificial fertilizer. 
  • Digestion of biodegradable waste, septic sludge, wastewater sludge and similar products may also be a feasible option for small-scale energy production.

Make the most of water

Smart, integrated management of wastewater conserves a valuable resource and enhances local communities. Treatment systems, for instance for stormwater, that capture water in ponds and treatment beds can provide a major visual lift. With good planning and planning, stormwater traps can be attractive public spaces and also have a cooling effect – a valuable asset in hot and arid climates.

Cooperation is needed

Effective cooperation between water supply authorities and agencies in charge of sanitation and wastewater management is needed to get the most from our water supply and sanitation sector. Drinking water sources are too often polluted by wastewater, sludge and sanitary waste.