Is purified recycled water a solution to the current water shortage?
Purified recycled water is suggested as a solution to falling water supplies. Discuss the processes that wastewater undergoes before it is returned to a dam or a river to be re-used.
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After separating most floc, the water is filtered as the final step to remove remaining suspended particles and unsettled floc. The most common type of filter is a rapid sand filter. Water moves vertically through sand which often has a layer of activated carbon or anthracite coal above the sand.
What does the carbon or anthracite coal do to the water to make it cleaner and what chemical reactions are taking place?
You will need to refer back to what you have learned about intermolecular forces here. Find out if activated carbon or antrhacite is polar or non polar and therefore what kinds of materials does it attract and trap and what types of materials would pass straight through it. Consider surface area as having relevance to your response as well.
At the Queensland Water Commission website, it makes mention of several processes that "may" be used in the recycling of water, such as heat and UV irradiation and chlorination to remove and kill microorganisms. Is this important to discuss?
One of the chief causes of concern with recycled water is the threat of disease from water contaminated by microorganisms. These could be important to provide confidence in the use of recycled water. They may not be the critical focus of the chemistry for this topic.
4 comments:
After separating most floc, the water is filtered as the final step to remove remaining suspended particles and unsettled floc. The most common type of filter is a rapid sand filter. Water moves vertically through sand which often has a layer of activated carbon or anthracite coal above the sand.
What does the carbon or anthracite coal do to the water to make it cleaner and what chemical reactions are taking place?
You will need to refer back to what you have learned about intermolecular forces here. Find out if activated carbon or antrhacite is polar or non polar and therefore what kinds of materials does it attract and trap and what types of materials would pass straight through it. Consider surface area as having relevance to your response as well.
At the Queensland Water Commission website, it makes mention of several processes that "may" be used in the recycling of water, such as heat and UV irradiation and chlorination to remove and kill microorganisms. Is this important to discuss?
One of the chief causes of concern with recycled water is the threat of disease from water contaminated by microorganisms. These could be important to provide confidence in the use of recycled water. They may not be the critical focus of the chemistry for this topic.
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