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Q: What is the difference between hard and soft water? Use the editor to format your answer
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A: The correct option is:
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| List and describe the two main methods of seawater desalination. |
Desalination plants are providing drinking water to one percent of the world population. The process is mainly carried in the countries of the Middle East as well as in North Africa. Desalination plants are often seen on Islands. These plants consume a lot of energy in the form of electricity thus the running cost of these plants is high. The salty water may be brine, brackish, or with a very low salinity level.
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- Give three examples of How Dissolved Oxygen levels can change due to human interaction with the aquatic ecosystem.Distinguish between water quality and hydrochemistry.Which substance is found at high concentrations in surface waters and decreasing concentrations with depth and why? carbon dioxide (CO2) OR oxygen (O2)
- Give 5 examples of freshwater organisms and their dissolved oxygen requirements.Which of the following is FALSE regarding water treatment? A) Settling of floc during sedimentation is always a chemical process. B The addition of activated carbon as filter media is done to remove odorous organic compounds. Algae removal from water can be done using aeration. D Disinfection is carried out using radiation or chemical agents.Why aeration is important in water treatment?Why Coagulation as a chemical tool is important in water treatment?
- Why is such a small amount of freshwater available for humans to readily use?Which of the following is FALSE regarding water treatment? Settling of floc during sedimentation is always a chemical process. Algae removal from water can be done using aeration. Disinfection is carried out using radiation or chemical agents. The addition of activated carbon as filter media is done to remove odorous organic compounds.What is the purpose of environmental remediation? to restore water to its original purity levels to make the most of currently used technologies and resources to remove pollution or contamination from the environment to reuse materials that would otherwise go to waste
- The amount of water present on Earth is constant. In spite of this, water crisis is experienced by people in some communities/countries. Why is there inadequacy of water supply?Which of the following is FALSE regarding water treatment? A Algae removal from water can be done using aeration. B Settling of floc during sedimentation is always a chemical process. Disinfection İs carried out using radiation or chemical agents. The addition of activated carbon as filter media is done to remove odorous organic compounds.Which of the following is FALSE regarding water treatment? A Settling of floc during sedimentation is always a chemical process. B The addition of activated carbon as filter media is done to remove odorous organic compounds. C Algae removal from water can be done using aeration. D Disinfection is carried out using radiation or chemical agents.