Question

In: Civil Engineering

Wastewater from Taman Cenderawasih is treated through a bio tower. These are the data related to...

  1. Wastewater from Taman Cenderawasih is treated through a bio tower. These are the data related to the bio tower:

Flow rate

=

20 000 m3/day

Minimum temperature of the area

=

34C

Medium height

=

2 m

Influent BOD

=

300 mg/L

Effluent BOD

=

20 mg/L

Recirculation flow rate to the tower

=

35 000 m3/day

Wastewater treatability constant

=

0.09 min-1 at temperature 20C

Medium coefficient

=

0.5

Compute:

  1. Ratio of recycled flow to the influent flow
  2. Hydraulic loading (m3/m2.min)
  3. Volume of the medium needed

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