write short note on biological oxygen demand
Answers
Answered by
2
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.[1]
BOD can be used as a gauge of the effectiveness of wastewater treatment plants. It is listed as a conventional pollutant in the U.S. Clean Water Act.
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.
BOD can be used as a gauge of the effectiveness of wastewater treatment plants. It is listed as a conventional pollutant in the U.S. Clean Water Act.
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.
Answered by
0
┏─━─━─━─━∞◆∞━─━─━─━─┓
✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭
┗─━─━─━─━∞◆∞━─━─━─━─┛
0xygen Cycle➫ The process by which oxygen released into the atmosphere by photosynthetic organisms.
♦ Oxygen is an element that is very important to living organisms.
♦ The main source of atmospheric free oxygen is photosynthesis
♦ It is created and used in different ways.
♦ The quantity of oxygen is 20.95% in the atmosphere which is maintained by oxygen cycle.
♦ The oxygen cycle is often interconnected with the carbon cycle because carbon and oxygen are often combined together in a molecule.
➧ 0xygen cycles has four main reservoirs:-
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=⤵
❱ The Atmosphere
❱ The Hydrosphere
❱ The Lithosphere
❱ The Biosphere
➧ How 0xygen produced:-
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=⤵
[1] Plants create the majority of the oxygen we breathe through a process called photosynthesis.
[2] In this process plants use carbon dioxide, sunlight & water to create energy.
[3] In the process they also create oxygen which they release into the air.
➧ Importance of 0xygen:-
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=⤵
❱ It helps move oxygen through the three main regions of the Earth.
❱ To break down sugar to produce ATP or adenosine triphosphate.
❱ To help someone who cannot breathe by providing them with oxygen.
_________
Thanks....✊
✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭
┗─━─━─━─━∞◆∞━─━─━─━─┛
0xygen Cycle➫ The process by which oxygen released into the atmosphere by photosynthetic organisms.
♦ Oxygen is an element that is very important to living organisms.
♦ The main source of atmospheric free oxygen is photosynthesis
♦ It is created and used in different ways.
♦ The quantity of oxygen is 20.95% in the atmosphere which is maintained by oxygen cycle.
♦ The oxygen cycle is often interconnected with the carbon cycle because carbon and oxygen are often combined together in a molecule.
➧ 0xygen cycles has four main reservoirs:-
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=⤵
❱ The Atmosphere
❱ The Hydrosphere
❱ The Lithosphere
❱ The Biosphere
➧ How 0xygen produced:-
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=⤵
[1] Plants create the majority of the oxygen we breathe through a process called photosynthesis.
[2] In this process plants use carbon dioxide, sunlight & water to create energy.
[3] In the process they also create oxygen which they release into the air.
➧ Importance of 0xygen:-
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=⤵
❱ It helps move oxygen through the three main regions of the Earth.
❱ To break down sugar to produce ATP or adenosine triphosphate.
❱ To help someone who cannot breathe by providing them with oxygen.
_________
Thanks....✊
Similar questions