As part of the process of becoming resilient, I need to identify values and specific roles in which to apply my values. These contexts are known as value domains. As of this writing, I am able to identify the following value domains and roles, in which I need to clarify personal values:
- Personal health/wellbeing
Human population development
Human populations often grow near water sources. More recently, human populations have been developed in arid locations:
Water projects deliver water from remote locations to arid communities:
Energy and material costs of moving water are significant. Water is sometimes pumped up slope, over hundreds of miles, and from many sources.
Competition and Conflict
Native populations and local residents have historically asserted rights to local water sources. Additionally, water quality can be contentious from downstream communities that feel quality has been degraded by upstream uses.
- Texas v. Oklahoma – Supreme Court ruled that Texas does not have right to Oklahoma water
- China – undertaking major projects to convey water from South to North China, large water projects (3 Gorges Dam)
- Owens Valley – local residents/farmers asserted right to water over Los Angeles
- United States v. Mexico – Colorado River water is significantly depleted before getting to Mexico
- Egypt and Ethiopia – Egypt has rights to water superseding water rights in Ethiopia
- Singapore and Malaysia – Singapore relied on water from Malaysia; focused on water re-use/reclamation (water treated to high level put back in water system), now “water independent”
Cooperation and agreements
Water treaties are created between countries/populations to make agreements about water usage and passage. This brings cooperation between people, nations, etc.
- Areas with poor sanitation
Nitrogen – amonia -> Nitrate
health concern: methemoglobinemia (Blue Baby Syndrome)
Algal blooms; diurnal cycle leading to effects including fish death.
Example sources of phosphorus: detergent (tripolyphosphate)
Sources of containments that are spread out across the landscape. E.g. agriculture.
Toxic organic compounds
PCB – Polychlorinated Biphenyls
- used as insulators
- low potential for combustion
- potential carcenogens
DDT – dichlorodiphenyltrichloroethane
- Effective at killing mosquitos
- Prevented spread of malaria, saving countless lives
- Affects bird reproduction
- Rachel Carson – Silent Spring documents effects of DDT/organic chemicals on ecosystems
PCE – Tetrachloroethylene
- Impacted water supply
- Movie: Civil Action featuring John Travolta
- Have health benefits
- Emerge from body potentially un-altered
- Flow through sewage treatment systems into environment
Protects surface of metals, extending usefulness. Can find way into environment.
A new Blender3D plugin has been created enabling the import of OpenStreetMap data for 3D extrusion, visualization, modelling, simulation, etc.
OSM objects can be imported as flat Blender objects or as extruded ones with the specified thickness. Either new custom properties latitude and longitude are set for the active Blender scene or previous values of the custom properties latitude and longitude are kept. In either case the Blender scene is said to be georeferenced.
There are several significant steps in water treatment, including:
- Filtration – e.g. Biosand
- Coagulation & Flocculation
- Biological degradation – aeration, microbial digestion, etc. (if wastewater)
- Settling / Sedimentation
- Removal of excess nitrogen and phosphorous
- Discharge (if wastewater)
- Disinfection (if for drinking) – UV, chlorination, etc.