https://padlet.com/maddast18/rq18hoblxvcl en-us 2017-11-15 23:09:54 UTC 2025-11-27 17:39:59 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Pictureland.png maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207473320 Screening is the first step in any wastewater treatment operation. This step involves removing large floating and bio-degradable solids such as papers, plastics, containers, wood, and tins. We conducted this step by putting a netting trap over the grit chamber. The wastewater was then poured into the grit chamber where the netting caught some solids. ]]> 2017-11-15 23:14:00 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207473320 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207473336 Grit Removal is the second step where sand and  grit are removed. In the lab we mixed the mixture of "grit" quickly and then let the bigger parts of the grit settle to the bottom. Then we poured the water into the primary settling tank where the bigger piece of grit were left behind. ]]> 2017-11-15 23:14:09 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207473336 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207473383 This third step is where the actual treatment begins. The velocity of the water flow in the tanks slows down which allows the heavy organic material, also known as sludge, to settle. In the lab we allowed the mixture in the primary settling tank sit so that the bigger pieces float to the top and the smaller bits settle at the bottom.  ]]> 2017-11-15 23:14:29 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207473383 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207473441 In this step of the treatment a special mixture of tiny organisms that feed on any dissolved nutrients in the water. In the lab we added a mixture of dry sand and ENO's (These represent the tiny organisms) into the bioreactor to remove any dissolved nutrients. All the contents of this tank are then poured into the secondary settling tank. ]]> 2017-11-15 23:14:56 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207473441 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207473504 In this step the tiny organisms and germs clump together at the bottom of the tank forming a layer brown sludge. In the lab we let the mixture in the secondary settling tank sit for 1 minute in which time the mixture representing the sludge had settled together at the bottom of the tank. ]]> 2017-11-15 23:15:19 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207473504 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207473601 This step removes any pathogenic microorganisms through the use of chlorine. In our lab we used bleach instead. The liquid in the secondary setting tank was then poured into the disinfection tank where we added 2 teaspoons of bleach to the liquid. This process gives the water a final cleaning.  ]]> 2017-11-15 23:16:07 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207473601 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207473608 This is the last step of the wastewater treatment process in which the water is then discharged back into nature. ]]> 2017-11-15 23:16:10 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207473608 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207496589 2017-11-16 01:45:22 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207496589 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207496737 2017-11-16 01:46:06 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207496737 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207496847 2017-11-16 01:46:34 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207496847 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207497175 2017-11-16 01:48:10 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207497175 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207497306 2017-11-16 01:48:55 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207497306 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207497453 2017-11-16 01:49:46 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207497453 maddast18 https://padlet.com/maddast18/rq18hoblxvcl/wish/207497606 2017-11-16 01:50:44 UTC https://padlet.com/maddast18/rq18hoblxvcl/wish/207497606