C10 - Using Resources - LIAM


Liam Welsman
Mind Map by Liam Welsman, updated more than 1 year ago
Liam Welsman
Created by Liam Welsman about 4 years ago

Resource summary

C10 - Using Resources - LIAM
  1. Water Treatment
    1. 1. Collection – The source water for a municipal surface water treatment plant is typically a local river, lake, or reservoir. There must be a method to get this water to the water treatment plant.
      1. 2. Screening and Straining – If you think about surface water sources, i.e., lakes, rivers, and reservoirs, you realize they contain varying amounts of suspended and dissolved materials
        1. 3. Chemical Addition – Once the pre-screened source water is received into the treatment plant, chemicals are added to help make the suspended particles that are floating in the water clump together to form a heavier and larger gelatinous particle
          1. 4. Coagulation and Flocculation - A rapid mix unit is usually used where the coagulant is added to the water to provide a very quick and thorough mixing
            1. 5. Sedimentation and Clarification – Once the flocculation process is complete, the water then passes over the weir in the flocculator and travels to the center of the clarifier, or sedimentation basin
              1. 6. Filtration – Clarified water enters the filters from the top. Gravity pulls the water down through the filters where it is collected in a drain system at the bottom of the unit
                1. 7. Disinfection – Once the water has gone through the filtration process, it is about as clear and clean as it can get. However, there may still be bacteria and viruses remaining
                  1. 8. Distribution – So how does the water come out of your kitchen tap? The stored water is pushed through underground pipelines all over town in what is called a “distribution system”.
    2. Water
      1. Potable
        1. potable water, is water that is safe to drink or to use for food preparation. The amount of drinking water required to maintain good health varies
        2. Pure
          1. Purified water is water that has been mechanically filtered or processed to remove impurities and make it suitable for use
          2. pH
            1. pH is a scale used to specify how acidic or basic a water-based solution is. Acidic solutions have a lower pH, while basic solutions have a higher pH. At room temperature, pure water is neither acidic nor basic and has a pH of 7
          3. Whats a settling Tank
            1. settling tank or clarifier, component of a modern system of water supply or wastewater treatment. A sedimentation tank allows suspended particles to settle out of water or wastewater as it flows slowly through the tank
            2. Life Cycle Assesmet
              1. Life-cycle assessment (LCA, also known as life-cycle analysis, ecobalance, and cradle-to-grave analysis) is a technique to assess environmental impacts associated with all the stages of a product's life from raw material extraction through materials processing, manufacture, distribution, use, repair and maintenance...
                      1. Whats a Foculant?
                        1. Flocculation, in the field of chemistry, is a process in which colloids come out of suspension in the form of floc or flake, either spontaneously or due to the addition of a clarifying agent
                        2. Whats a graded sand bed?
                          1. Pressure sand bed filters tend to be used in industrial applications and often referred to as rapid sand bed filters. Gravity fed units are used in water purification especially drinking water and these filters have found wide use in developing countries
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