Investigation of biological phosphorus removal in a sequencing batch reactor
Download
1 / 15

INVESTIGATION OF BIOLOGICAL PHOSPHORUS REMOVAL IN A SEQUENCING BATCH REACTOR - PowerPoint PPT Presentation


  • 90 Views
  • Uploaded on

INVESTIGATION OF BIOLOGICAL PHOSPHORUS REMOVAL IN A SEQUENCING BATCH REACTOR. By Brett Bovee, Peter Burns, Alex Mikszewski. PHOSPHORUS (PO 4 3- ). Often is the limiting nutrient for algal growth in freshwater bodies – causes eutrophication “Anoxic Zones” caused by algal blooms – fish kills

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' INVESTIGATION OF BIOLOGICAL PHOSPHORUS REMOVAL IN A SEQUENCING BATCH REACTOR' - norman-bowman


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Investigation of biological phosphorus removal in a sequencing batch reactor

INVESTIGATION OF BIOLOGICAL PHOSPHORUS REMOVAL IN A SEQUENCING BATCH REACTOR

By

Brett Bovee, Peter Burns, Alex Mikszewski


Phosphorus po 4 3
PHOSPHORUS (PO SEQUENCING BATCH REACTOR43-)

Often is the limiting nutrient for algal growth in freshwater bodies – causes eutrophication

“Anoxic Zones” caused by algal blooms – fish kills

Typically abundant in 2° municipal wastewater effluent (2.5 - 6 mg/L)


Environmental degradation
ENVIRONMENTAL DEGRADATION SEQUENCING BATCH REACTOR


Phosphorus removal
PHOSPHORUS REMOVAL SEQUENCING BATCH REACTOR

EPA Water Quality Criteria:

Effluent concentration  10 μg/L

Achieved by Chemical or Biological Removal


Chemical removal
CHEMICAL REMOVAL SEQUENCING BATCH REACTOR

High efficiency and Easy to Implement

But……

Expensive

Contaminates Sewage Sludge


Biological removal
BIOLOGICAL REMOVAL SEQUENCING BATCH REACTOR

Presently in its infancy

Enhanced Biological Phosphorus Removal (EBPR)

Selects for Phosphate Accumulating Organisms

(PAOs)

Removes problem of sewage sludge contamination


EBPR SEQUENCING BATCH REACTOR

PAOs grab organics /

Release cellular PO4

Initial Anaerobic Stage

Aeration

Uptake PO4 for Energy Production & Storage


The experiment
THE EXPERIMENT SEQUENCING BATCH REACTOR

Objective: Create a Functional EBPR Batch Sequencing Reactor

Two-Phase Experiment:

Non-Treatment Operation  Phosphorus Treatment

<70% Removal

15% Removal


Plant set up
PLANT SET-UP SEQUENCING BATCH REACTOR

Cycling DO Control  BOD Removal

High Aeration Rate  Plastic Covering

Phosphorus Selection Stage  Select for PAOs

(One Hour, Anaerobic)


Ebpr results
EBPR RESULTS SEQUENCING BATCH REACTOR

Achieved higher than expected removal  70%


Ebpr results1
EBPR RESULTS SEQUENCING BATCH REACTOR

Greater Removal than Initial Non-Treatment Phase

Avg. EBPR = 0.497 mg/L

Avg. Standard = 0.934 mg/L


Discussion thoughts
DISCUSSION & THOUGHTS SEQUENCING BATCH REACTOR

Results show EBPR treatment works

Encouraging results after 1 week of operation

(HRT = 10 days)

Maximum EBPR Efficiency  95%


Ebpr improvements
EBPR IMPROVEMENTS SEQUENCING BATCH REACTOR

Remove competition with G bacteria

SRT  3 to 5 days

Feed Temp < 10°C

pH > 7.2

Influent  High COD : PO4


Future of ebpr
FUTURE OF EBPR SEQUENCING BATCH REACTOR

Must increase removal efficiency to avoid post-EBPR chemical treatment

Establishing ID of PAO bacteria

Influent and Ambient Conditions Favorable to PAO


Thank you

THANK YOU SEQUENCING BATCH REACTOR

QUESTIONS

COMMENTS


ad