Biological oxygen demand | Wikipedia audio article
Channel: wikipedia tts
Date: 02/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Biochemical_oxygen_demand


00:01:08 1 Background
00:06:33 1.1 Typical values
00:07:42 2 Methods
00:07:57 2.1 Dilution method
00:13:15 2.2 Manometric method
00:14:44 3 Alternative methods
00:14:54 3.1 Biosensor
00:17:52 3.2 Fluorescent RedOx Indicator
00:18:45 3.3 Software sensor
00:19:52 4 Dissolved oxygen probes: Membrane and luminescence
00:24:12 5 Test limitations
00:24:35 5.1 Toxicity
00:25:26 5.2 Appropriate microbial population
00:26:34 6 History
00:29:37 7 See also



Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago.

Learning by listening is a great way to:
- increases imagination and understanding
- improves your listening skills
- improves your own spoken accent
- learn while on the move
- reduce eye strain

Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone.

Listen on Google Assistant through Extra Audio:
https://assistant.google.com/services/invoke/uid/0000001a130b3f91
Other Wikipedia audio articles at:
https://www.youtube.com/results?search_query=wikipedia+tts
Upload your own Wikipedia articles through:
https://github.com/nodef/wikipedia-tts
Speaking Rate: 0.7838381752293425
Voice name: en-US-Wavenet-C


"I cannot teach anybody anything, I can only make them think."
- Socrates


SUMMARY
=======
Biochemical Oxygen Demand (BOD, also called Biological Oxygen Demand) is the amount of dissolved oxygen needed (i.e. demanded) by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.  The BOD value is most commonly expressed in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20 °C and is often used as a surrogate of the degree of organic pollution of water.BOD can be used as a gauge of the effectiveness of wastewater treatment plants. BOD is similar in function to chemical oxygen demand (COD), in that both measure the amount of organic compounds in water. However, COD is less specific, since it measures everything that can be chemically oxidized, rather than just levels of biodegradable organic matter.