https://padlet.com/ferrufhe18/som34i9d03sh en-us 2017-11-15 22:15:45 UTC 2026-01-22 20:40:05 UTC hello@padlet.com ferrufhe18 https://padlet.com/ferrufhe18/som34i9d03sh/wish/207665779 During this process, we poured the wastewater into a separate beaker but to prevent large object from coming through, we placed a net to catch sed objects. During the actual wastewater treatment process, they also screen the incoming water, removing solids. Like us, they use screens to prevent these solids from passing through and damaging equipment.]]> 2017-11-16 14:14:41 UTC https://padlet.com/ferrufhe18/som34i9d03sh/wish/207665779 ferrufhe18 https://padlet.com/ferrufhe18/som34i9d03sh/wish/207680692 For this, we took a spoon and stirred the water for the grit to collect at the bottom then we quickly poured the water into the next beaker, leaving behind most of the grit. In real life, they use machines to spin the water in order for the grit to collect at the bottom. ]]> 2017-11-16 14:36:30 UTC https://padlet.com/ferrufhe18/som34i9d03sh/wish/207680692 ferrufhe18 https://padlet.com/ferrufhe18/som34i9d03sh/wish/207709578 We then took the water and let it sit for a minute in order for the sludge to stay at the bottom of the beaker. During real life wastewater treatment, they also allow the water to sit for the sludge to collect at the bottom of the tanks, making it easier to get rid of most sludge. After that time, we took our spoon “scraper” and removed as much surface oil as possible although it was difficult. Like our simulation, after the sludge collects at the bottom, these primary settling tanks in real life use scrapers from the top and bottom the water, removing sludge and oils. ]]> 2017-11-16 15:17:42 UTC https://padlet.com/ferrufhe18/som34i9d03sh/wish/207709578 ferrufhe18 https://padlet.com/ferrufhe18/som34i9d03sh/wish/208676395 During our lab, we then took the water and added fine dry sand and ENO’s which represent the organisms that consume and remove dissolved nutrients from actual wastewater treatment bioreactor tanks.]]> 2017-11-20 12:43:15 UTC https://padlet.com/ferrufhe18/som34i9d03sh/wish/208676395 ferrufhe18 https://padlet.com/ferrufhe18/som34i9d03sh/wish/208698872 We then took the water and added bleach in order to remove these tiny organisms used in the bioreactor and left over germs from human waste which could spread disease if they are left to flow in the water. This process is also done in real life although they either use chlorine or UV lights to disinfect the water. ]]> 2017-11-20 13:42:25 UTC https://padlet.com/ferrufhe18/som34i9d03sh/wish/208698872 ferrufhe18 https://padlet.com/ferrufhe18/som34i9d03sh/wish/208828875 We then let the water sit for another minute. This is also a process that occurs during actual wastewater treatment although the water is left to sit much longer than one minute. During this step, some human waste germs and the tiny organisms naturally clump together. This sludge once again settling to the bottom and left behind upon the transfer from beaker to beaker or tank to tank. ]]> 2017-11-20 18:04:17 UTC https://padlet.com/ferrufhe18/som34i9d03sh/wish/208828875 ferrufhe18 https://padlet.com/ferrufhe18/som34i9d03sh/wish/208831618 After water is treated, it is released back to rivers and eventually back into the water cycle. In our lab, we emptied the now clean water back into the sink. ]]> 2017-11-20 18:10:48 UTC https://padlet.com/ferrufhe18/som34i9d03sh/wish/208831618