term1 Definition1term2 Definition2term3 Definition3
Please sign in to your Google account to access your documents:
What purpose does the activated sludge process serve within wastewater treatment?
To oxidize and remove soluble or finely divided suspended materials that were not removed by previous treatment (preliminary and primary).
When the biochemical oxygen demand (BOD) of incoming wastewater increases, what happens to the air requirement in the aeration tank?
Air requirements increase––more food (BOD) encourages biological activity, which in turn requires more air (oxygen).
Why is air added to the aeration tank in the activated sludge process?
Air is added to the aeration tank in the activated sludge process to provide oxygen to sustain the living organisms as they oxidize the wastes to obtain energy for growth. The application of air also provides mixing to ensure that the oxygen and food (BOD) are distributed to all the organisms.
What does the volatile content of the mixed liquor suspended solids represent?
The volatile content of the mixed liquor suspended solids represents the amount of microorganisms in the activated sludge process.
What influences the amount of air required in an aeration tank?
The amount of food (BOD) in the wastewater and type of treatment are the principal influences on the amount of air required in the aeration tank.
Aerobic organisms grow relatively quickly, efficiently oxidize waste, produce little or no odor, but require a proper amount of dissolved oxygen to function properly.
a. True b. False
True
The conventional activated sludge process produces a high quality of effluent and the process has some ability to absorb _____loads
The conventional activated sludge process produces a high quality of effluent and the process has some ability to absorb shock loads
As the water temperature drops, water will be able to dissolve:
a. more oxygen b. less oxygen
a. more oxygen
Diffused aeration systems are the most common. Can anyone tell me why this might be true?
More versatile, mobility, cost effective––can make repairs which do not require shutting down the whole tank, can adjust airflow to be more efficient, etc.
Slips, trips, and falls
Make sure the walking surface is clean and dry (remove slime and brush away standing water).
Keep handrails in place, if possible.
Wear fall arrest device.
Need help typing ? See our FAQ (opens in new window)
Please sign in to create this set. We'll bring you back here when you are done.
Discard Changes Sign in
Please sign in to add to folders.
Sign in
Don't have an account? Sign Up »
You have created 2 folders. Please upgrade to Cram Premium to create hundreds of folders!