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alexdok [17]
3 years ago
10

1. What is the maximum value of the linear density in a crystalline solid (linear density defined as the fraction of the line le

ngth occupied by atoms, assumed as spheres and only counted it their center is on the line)?
2. What family of directions has the highest linear density in the FCC system?
3. What family of directions has the highest linear density in the BCC system?
4. What family of planes has the highest planar density in the FCC system?
5. What family of planes has the highest planar density in the BCC system?
6. What family of planes has the highest planar density in the HCP sytem?
Engineering
1 answer:
insens350 [35]3 years ago
4 0
Number three number three number three I’m not 100% sure though
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A flow of 2.6 MGD leaves a primary clarifier with a BOD of 131 mg/L. Determine the aeration period (hydraulic detention time) of
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Answer:

8.5 days

Explanation:

Given data :

Flow ( Q ) = 2.6 MGD = 11819.834 m^3/day

BOD = 131 mg/L

BOD loading rate = 35 Ibs/1000 ft^3   per day = 0.5606 kg/m^3/day

<u>Calculate the sludge age of the facility </u>

Given  the BOD  applied to the aeration tank  = 11819.834 m^3/day * 131mg/l

                                                                            = 1548.398 kg/day

first calculate the volume of the aeration tank

V = BOD applied / BOD loading rate

V = 1548.398 / 0.5606 = 2762.03 m^3

Hydraulic Detention time = V / Q

                                          = 2762.03 / 11819.834  = 0.2336 day = 5.6 hour

next : determine the mass rate of the waste

= 44% * 0.5606 kg/m^3/day

= 0.2466 kg/m^2/day

finally determine the sludge age

= V * Xt / ∅w * R

= ( 2762.03 m^3 * 2100 * 10^-3 ) / ( 0.2466 * 2762.03 kg/day )

= 8.5 days

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Answer: information security managers

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What is 222 divided by 11.2
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The answer of this question is 19.89142857

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