Agriculture Reference
In-Depth Information
resources fl ows between the sectors will take place: nutrients in the form
of urine and decomposed feces as well as treated wastewater and compost
will be used in agriculture. The digestion of organic waste produces bio-
gas which is an additional local energy source. This will not only enable
the recovery and reuse of water, nutrients and energy, but also lessen the
demand for centralized services and hence create more independence for
the users.
TABLE 6:
Overview of technical systems for concept scenario1—Concept of natural
resources flows.
Concept scenario 1—Local identity
Water supply
Wastewater
Agriculture
Solid waste
- RWH (on-site
and groundwater
recharge
- Separation black
water/grey water
- Conservation of
chinampas
- Separation organic
and inorganic waste
- Aquifer recharge
through rainwater
capture
- Suitable treatment for
black waters (on-site
treatment)
- Use of compost
- Local gardens (to
support subsistence
with vegetables)
- On-site (vermi)
composting
- Reuse of treated
wastewater for non-
drinking purposes
- Treatment of grey
water for reuse
- Use of treated
wastewater
- Anaerobic digestion
of organic waste
The objective of the concept scenario “Economic and community de-
velopment” is economic development with a strong focus on agriculture.
In the mountainous areas where no agriculture is practiced, there is a focus
on community development. In this scenario (Table 7) the main resources
fl ows emanate from the sanitation systems that allow the reuse of treated
wastewater in the chinampas or in some other areas to improve the ag-
ricultural production and to have better tourist services. The compost of
the decentralized composting facility is used in local agriculture. In the
mountainous area, community technologies are the main feature of this
scenario.
