treating waste water Flashcards
1
Q
what has to be done to waste water to be released back to the environment
A
Harmful chemicals and organic matter muse be removed before it is released back into the environment.
2
Q
what is the process of treating waste water
A
1.goes through the sewage system
- goes through screening and grit removal (removes objects such as rags, paper, plastics, and metals to prevent damage and clogging of downstream equipment, piping, and appurtenances.)
- and sedimentation (the process of separating small particles and sediments in water.)
- then it splints 2 ways 1 to liquid effluent and one to sludge
- liquid effluent; water goes through aerobic treatment
- sludge(solid): treated by anaerobic digestion