Answer:
The required efficiency of BOD5 removal of the plant needs to be at least 91%
Explanation:
Even though a WWTP (Waste water treatment plant) has several unit operations, it needs to have an overall treatment efficiency. In this case, it is only required to know how much BOD5 do we need to lower by removing organic matter from the water. It goes as following:
This will work for any efficiency, for any parameter you need to define. They need to be in the same concentration unit, of course.
Replacing known values, we have:
Which we will approximate to 91%, because decimal percentages do not say anything and are not currently used.
Answer:
It allowed for easier communication.
Explanation: When people speak the same language as you they are easier to understand.
Answer:
D.)
Explanation:
Convection is a type of heat transfer of thermal energy when a fluid, like air or a liquid, is heated . Heat energy is transferred from hot places to cooler places. not only that but the initial heat transfer between the object and the fluid takes place through conduction
Answer: They created the Patroon system in 1629, which granted large tracts of land to investors who could successfully settle fifty colonists within four years at the investors' expense. The patroon system eventually led to the successful settlement of New Netherland Colony.
