7B
- YOU MUST COMPLETE THE COIN FLIPS PROBABILITY ACTIVITY TONIGHT
(Flip 5 coins 70 times and tally the results)
Wastewater treatment
https://www.youtube.com/watch?v=FvPakzqM3h8
Watch the video above and find the missing information in the worksheet below.
1) All wastewater in the city goes to a t___________________________ so it turns back into _______________________
2) It all starts when we flush the t______________
3) New York City has ___________ water treatment plants and they treat a total of __________ billion gallons each day
4) There are __________ water treatment plants in the USA
5) Step 1: The larger items, including w__________ and t________ are separated by b______ screens and they are trucked to the l________________
6) The main objective of pre-treatment of sewage water is to make sewage less c_______________
7) Step 2: The grit chambers let the s_________ and r_________ settle out, and there are _____ types of grit chambers: Horizontal, Aeriated, and Vortex
8) Step 3: Primary Clarifiers: the waste water (without solids, sand and rocks) then pump into the primary clarifier to remove all o____________ m__________
9) Afterwards, the top level of water flows into s______________ treatment
10) Step 4: Secondary treatment moves b___________ content and it creates thousands of b___________ in the aeration basins
11)Basically, in this stage, the process let the b__________ eats the organic food
12) During the aerobic digestion process, bubbles inject o__________ into the water and this breaks down the o____________ matters
13)Step 5: Secondary Clarifiers: this is the final removal of s________ and b__________ matters. It also involves d_______________ where 85% of the organic matters are removed
14)Disinfections: there are _______ ways to disinfect the waste water. Adding C_________, O________ or UV radiation.
15)Adding C_________ kills the bacteria and they are removed before discharging to the ____________
16)Pumping O__________ into the waste water will kill off the bacteria
17)17) Injecting UV radiation into waste water scramble the bacteria _________ so they cannot m______________
18)Effluent release: pumps treated water back into the ___________ and ___________
Water filtration
https://www.youtube.com/watch?v=0_ZcCqqpS2o
Waste water treatment
https://www.youtube.com/watch?v=FvPakzqM3h8
https://www.youtube.com/watch?v=zSsxXhhGoc
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