Common questions

What is BOD in human body?

What is BOD in human body?

Biochemical oxygen demand (BOD) represents the amount of oxygen consumed by bacteria and other microorganisms while they decompose organic matter under aerobic (oxygen is present) conditions at a specified temperature.

What BOD means?

Biochemical oxygen demand (BOD) is the amount of dissolved oxygen (DO) 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.

What is BOD and why is it important?

It represents the quantity of oxygen which is consumed in the course of aerobic processes of decomposition of organic materials, caused by microorganisms. The BOD therefore provides information on the biologically-convertible proportion of the organic content of a sample of water.

What does BOD mean in apes?

Biological Oxygen demand (BOD) the amount of oxygen tht is used or demanded as waste material is digested or oxidized in organisms; higher values remove greater amounts dissolved oxygen from aquaic ecosystems; raw sewage has extremely high values and thus can lower dissolved oxygen very rapidly; measured in mg/L.

What happens if BOD is high?

The greater the BOD, the more rapidly oxygen is depleted in the stream. This means less oxygen is available to higher forms of aquatic life. The consequences of high BOD are the same as those for low dissolved oxygen: aquatic organisms become stressed, suffocate, and die.

What is BOD Toppr?

Biochemical oxygen demand (BOD) is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period.

What happen if BOD is high?

What is a good BOD level?

A BOD level of 1-2 ppm is considered very good. There will not be much organic waste present in the water supply. A water supply with a BOD level of 3-5 ppm is considered moderately clean.

How is BOD removed from wastewater?

Some BOD is removed in the septic tank by anaerobic digestion and by solids which settle to the bottom of the septic tank, but much of the BOD present in sewage (especially detergents and oils) flows to the leaching field. Too much BOD, however, can cause excessive growth of bacteria in the biomat.

How do you treat high BOD water?

These are the best practices for reducing BOD and TSS that facility managers should know:

  1. Focus on removing TSS from wastewater first.
  2. Get a properly sized EQ tank.
  3. Control the pH of the waste stream.
  4. Install a modern plate pack DAF made of stainless steel or plastic.
  5. Use a regenerative turbine air dissolution pump.

What is removed during secondary wastewater treatment?

The secondary stage of treatment removes about 85 percent of the organic matter in sewage by making use of the bacteria in it. The principal secondary treatment techniques used in secondary treatment are the trickling filter and the activated sludge process.

What is BOD :- A the amount of 02 Utilised by organisms in water b the amount of 02 utilized by micro organisms for decomposition C the total amount of 02 present in water D All of the above?

The key decomposers in water bodies are aerobic microbes. They require oxygen to break down the complex organic matter into simpler ones and then use it as their energy. The B.O.D. gives a measure for the total dissolved oxygen levels utilized by microbes in the biological metabolizing of organic molecules in water.

How are humans classified as a great ape?

Image: Stuart Humphreys Humans are classified in the sub-group of primates known as the Great Apes. Humans are primates, but the primates that we most closely resemble are the apes. We are therefore classified along with all other apes in a primate sub-group known as the hominoids (Superfamily Hominoidea).

How is ape anatomy different from human anatomy?

The Ape Anatomy in contrast with Humans Most of their skin is covered in hair Face is larger than their cranium Facial Structure: bigger eye ridges; large jaws; thin lips; flattened nose Longer arms Narrow pelvis Knees are bent only to greater or lesser extent Flatter and fatter feet Quadrupedal (moves on four limbs or legs)

What kind of acid does an ape have?

Apes have a particular type of sialic acid on their cells, which is not found in humans. Our immune systems recognise this as a foreign molecule and destroy any cells that have it.

How is ape social behavior different from humans?

Ape Social Behavior in contrast to Humans. Social groups are based only on survival necessities such as finding food, care of young, and protection. Has a limited range of communication (e.g. sounds and gestures) Limited use of tools. Does not live in a specific home or dwelling places.