Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
You can change this under Settings & Account at any time.
Transcript of Water Treatment
- Inorganic solids such as sand, gravel, coffee grounds, and eggshells will settle to bottom, then separated
- Organics are kept in suspension Aeration Basin
(Secondary Treatment) - Air is added to culture bacteria that eat dissolved
and suspended waste material in the water Dissolved Air Flow Thickener -Air is dissolved in water under pressure and then released at atmospheric pressure in a flotation tank or basin
-Released air forms tiny bubbles which adhere to the suspended matter
-Suspended matter floats to the surface of the water where it may then be removed by a skimming device Primary Clarifier
(Primary Treatment) -Separates waste from the water by slowing the flow.
-Heavy material settles to the bottom and the light material floats to the top Anaerobic Digester -Solids collected and removed from each thickener are digested by anaerobic bacteria
-Bacteria breaks down organic portion of the solids to usable byproducts
-Methane gas used for heating the solids during the digestion process and nutrient rich biosolids.
-Solids held in the digesters for 15-20 days at 95-98˚F to reduce pathogens Secondary Clarifier Chlorine Contact Chamber Water Reclamation Filters Effluent Discharge Pipe - Water is stilled and the bacteria
from the aeration tanks are allowed to
-Controlled amount of removed bacteria
are pumped back to the aeration tanks -Chlorine added in the form of sodium
-Hypochlorite to disinfect the water. Once the chlorine has been in contact
-With the water for a duration of time, sodium bisulfite is added to neutralize
-Chlorine compounds remaining so the water can be discharged safely -To produce recycled water, treated waste water is taken from the contact chamber to the filters
-Water is filtered through granular media (anthracite coal) to pass through the annular voids straining out remaining solids
-Clarified water collected and analyzed for purity -Drainage line for the disposal of sewage and precipitation water
-This supplies enough
bacteria to feed on