How will the Carlsbad Desalination plant mitigate their environmental impact to climate change and wetland habitats? Carbon offsets, recycled energy, CO2 recovery, renewable energy sources Which part of the world uses the most desalination? Middle east How much of desalination costs are due to energy use? 44% For the following technological developments, describe how they improve upon existing desalination, specifically how they reduce environmental impacts – Graphene (MIT) and WaterFX (Central Valley). WaterFX- large parabolic mirrors collect and concentrate suns energy, pure water evaporates and solids remain, remaining byproduct is solid and mined for useful chemicals instead of harmful brine Graphere- Advances in UK, Saudi Arabia, South Korea- 1 atom think perforated graphene membrane, pores can be tuned to optimize permeability, developed at MIT, could cut RO to a fraction of current costs What is Pure Water San Diego ? How much water is it expected to provide for San Diego?
- a phased mutli-year program that will provide a safe, secure, and sustainable local drinking water supply by turning recycled water into drinkable water through the use of water purification technology. -⅓ of SD drinking water supply Explain the treatment process at the Orange County Groundwater Replenishment System. microfiltration, reverse osmosis, UV with H2O2, post treatment What are some differences between desalination and wastewater recycling? drought proof What is the difference between Recycled, Indirect Potable Reuse and Direct Potable Reuse water? Recycled - not for drinking water, re-used for irrigation, industry, doesn't require as much treatment Indirect potable reuse- additional treatment to drinking water standards,pumped into natural storage Direct potable reuse- additional treatment to drinking water standards, pumped directly back into water supply What are the impacts to groundwater and surface water caused by urbanization? Less water infiltrates into groundwater supply, runoff often not treated before released to surface waters Bottled Water What regulations did the Safe Drinking Water Act put in place? Does it regulate bottled water? -authorized the epa to set standards for natural and man-made contaminants that may be found in drinking water -Bottles water is considered a food and is regulated by the FDA, federal monitoring only when shipped across state lines, otherwise regulations are up to the state What is a maximum contaminant level? highest level of contaminant allowed in drinking water What are some environmental concerns with bottled water? plastic is harmful to ecosystems and fills up landfills, water use- it takes 3 liters to produce 1 liter of bottles water, GHG’s- in 1 year its estimated that bottling water produces more than 2.5 million tons of CO2 Global Water Describe the four components of water security.
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- Spring '16
- Jillian Maloney