Answer:
The waste flow rate is 81.05 m3/h
Explanation:
According to the given data we have the following:
Influent SS concentration (CIn): 220 mg/L
Influent flow rate (QIn) : 450 m3/h
Effluent concentration (Cout): 45 mg/L
Waste sludge concentration (Cw): 10,000 mg/L
Qout + Qw= 450 m3/h
CIn QIn=Cout Qout+ Cw Qw
220*450=45Qout + 1000Qw
45Qout+1000Qw=99,000
Therefore, Qout=398.95 m3/h
Qw=81.05 m3/h
The waste flow rate is 81.05 m3/h
The answer is
C. A triangle shaped tool that functions as an incline ld plane
Answer:
tyre pressure monitoring system (TPMS)
Explanation:
It very important to inflate your tyres to the specified pressure. So cultivate a habit to check and refill them once a month. Note that you can't tell if a tyre is underinflated just by looking at it. If it actually looks underinflated in a way. And you can't really rely on a tyre pressure monitoring system (TPMS) only to keep track. Most systems only warn you when the pressure is 25 percent below the manufacturer's recommended tyre pressure.
Answer:
Explanation:
A- Specific gravity and Absorption Test: Specific gravity is a measure of a material’s density as compared to the density of water at 73.4°F (23°C). Therefore, by definition, water at a temperature of 73.4°F (23°C) has a specific gravity of 1. Absorption is also determined by the same test procedure and it is a measure of the amount of water that an aggregate can absorb into its pore structure.
Specific gravity is used in a number of applications including Superpave mix design, deleterious particle identification and separation and material property change identification while
B- Soundness Test : This determines an aggregate's resistance to disintegration by weathering and in particular, freeze-thaw cycles. Aggregates that are durable (resistant to weathering) are less likely to degrade in the field and cause premature HMA pavement distress and potentially failure.It is used to identify the excess amount of lime in cement.
C - Sieve analysis Test: is a practice or procedure used to assess the particle size distribution (also called gradation) of a granular material by allowing the material to pass through a series of sieves of progressively smaller mesh size and weighing the amount of material that is stopped by each sieve as a fraction of the whole mass. This test is used to describe the properties of the aggregate and to see if it is appropriate for various civil engineering purposes such as selecting the appropriate aggregate for concrete mixes and asphalt mixes as well as sizing of water production well screens.