Open study

is now brainly

With Brainly you can:

  • Get homework help from millions of students and moderators
  • Learn how to solve problems with step-by-step explanations
  • Share your knowledge and earn points by helping other students
  • Learn anywhere, anytime with the Brainly app!

A community for students.

Why anaerobic reactors may fail if organic loading rate (OLR) is increased suddenly? and what are the early warnings of the reactor failure and how can such failure be prevented.

Sanitary Engineering
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Join Brainly to access

this expert answer

SEE EXPERT ANSWER

To see the expert answer you'll need to create a free account at Brainly

it's because the methane producing bacteria (usually the main bacteria in anaerobic reactor) is very sensitive to the change of environment. if organic loading increased suddenly, the methane producing bacteria can't adapt quickly, so the acid that is produced by acid producing bacteria is not consumed by methane producing bacteria as fast as the acid forming rate. it will decreases the pH of the reactor and the risk of failure is higher. how to prevent that condition is by increase the OLR step by step. increase the OLR if the efficiency of the reactor is remain stable, i mean, if you work at OLR 5 kg/m3day then you reach efficiency more and less 50% in 3 days, you can increase the OLR to 5.5 kg/m3day. and repeat the process until the OLR you want.
the warning usually the drop of pH and removal efficiency
The early warning of the reactor if the reactor pH<7, then methane formers will become inactive, and methane production will stop. This will stop COD reduction in the reactor. Reactor failure in such circumstances may be avoided by adding a buffering agent like soda (Na2CO3) to the reactor to stop decline in pH. If (OLR) in an anaerobic reactor is increase suddenly the acid formers will become more active and VFA concentration in the reactor will increase, if the buffering capacity in the reactor is insufficient, all alkalinity in the reactor will be exhausted due to the increase acid formation, and reactor pH will go down.

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

Good answers people.

Not the answer you are looking for?

Search for more explanations.

Ask your own question