A Better World - Volume 3: Ensure Access to Water and Sanitation for All

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Water from vacuum toilets is treated together with organic waste, for instance organic oil from restaurants, to produce biogas and fertiliser. Greywater is treated

separately and used for urban greening and to improve the quality of recreational areas. A range of urban agencies need to cooperate to make this innovation

possible, including the urban utility for wastewater, the city’s stakeholder responsible for organic waste, urban planners and the urban department of the environment

Broader conversations on matter flux, as viewed across system borders, has been put into practice due to the Waste to Energy illustration

Vehicle transporting organic solid waste and faecal sludge to the biogas

plant that forms a central component of the Nashik Waste to Energy project

The Hamburg Water Cycle addresses the future needs of a city by being reuse

oriented and resource efficient – an inspiration for the development of a

sustainable sanitation concept for the city of Cochin, India (Beerman, 2017)

Fig. 7: Iconography used in describing the Waste to Energy project in Nashik, India

Fig. 8: The Hamburg Water cycle addresses several streams

Source: GIZ Factsheet http://www.urbansanitation.org/e31169/e58117/

Image: SFD Promotion Initiative

Image: GIZ

Rainwater

Housing

Greywater

Blackwater

Digester

Gas flaring unit (back

up during emergency)

Scrubbing

CHP

Power to NMC

Manure for agricultural use

Sand removal

Shredding

Pulper

Treated Wastewater

Faecal

sludge

Solid

waste

Gas

Digestrate

Run-off

Evaporation

Seepage

Purified greywater

Rainwater

Heating

Power

Greywater

Greywater treatment

Digestate

Vacuum

station

Biogas

Domestic

water

Blackwater recycling

Cogeneration

Blackwater

Source: Hamburg Wasser