Engineering, 23.04.2021 16:10, krisayon8126

The suspended-solids concentration entering a treatment and resource recovery plant is 200 mg/L in the plant influent; 3,000 mg/L in the primary sludge; 12,500 mg/L in the secondary sludge; and 3,500 mg/ L exiting the aeration basin. The concentration of total dissolved solids in the plant influent is 350 mg/L, and the concentration of total dissolved solids exiting the aeration basins is 2,300 mg/L. The BOD5 is 100 mg/L measured after primary treatment and 3 mg/L exiting the plant. Total nitrogen levels in the plant are approximately 35 mg N/L. If the F/M ratio is 0.35 g BOD5/gram MLSS-day, Estimate: (a) The hydraulic retention time of the aeration basins if the daily plant flow is 15 million liters.
(b) The organic loading rate (volumetric basis) to the aeration basins.
(c) The Treatment plant BOD and SS treatment efficiencies.
(d) The biological treatment efficiency for BOD removal
(e) The primary sedimentation sludge wasting rate m3 /d (hint, do a mass balance about the primary clarifier.

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 15:10, theamandawhite

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Answers: 1

continue

Engineering, 04.07.2019 18:10, skpdancer1605

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

Answers: 3

continue

Engineering, 04.07.2019 18:10, meganwintergirl

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Answers: 3

continue

Engineering, 04.07.2019 18:10, selenamr

Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed. gi) ifn 1, what will happen to the material when transformed material when

Answers: 1

continue

Do you know the correct answer?

The suspended-solids concentration entering a treatment and resource recovery plant is 200 mg/L in t...