Estimate the hydraulic retention time if the reactor is pfr

Assignment Help Civil Engineering
Reference no: EM13298982

A biological reactor is used to treat wastewater from a small community (Q = 100,000 gpd). The influent BOD5 concentration to the reactor is 200 mg/L and the required effluent BOD5 concentration is 30 mg/L. The reaction rate constant in the reactor = 0.25/day. Estimate the hydraulic retention time (HRT) if the reactor is a CFSTR and the HRT if the reactor is a PFR.

Reference no: EM13298982

Questions Cloud

Determine an appropriate plywood thickness and span rating : For a total floor load of 75 psf on 2x floor framing at 24 o.c., determine an appropriate plywood thickness and span rating assuming panels with edge support and panels oriented perpendicular to the framing. Specify the minimum fasterners and spac..
Explain how many grams of naclo must be added to 1.0 l : Construct a buffer to have a pH of 7.70 using HClO and NaClO (Ka = 3 x 10-8). How many grams of NaClO must be added to 1.0 L of a 0.40 M HClO solution (assume no volume change)
Produce the profit maximizing level of output and therefore : Produce the profit maximizing level of output and therefore there will be no deadweight loss associated with this production.
What is the instantaneous current through the surface : The quantity of charge q (in coulombs) that has passed through a surface of area 1.92 cm2 varies with time according to the equation q = 4t3 + 5t + 6, What is the instantaneous current through the surface at t = 1.02 s
Estimate the hydraulic retention time if the reactor is pfr : A biological reactor is used to treat wastewater from a small community (Q = 100,000 gpd). The influent BOD5 concentration to the reactor is 200 mg/L and the required effluent BOD5 concentration is 30 mg/L.
Dividing the total amount produced in the market : In a perfectly competitive industry if each firm is identical then we can calculate the number of firms in the industry by
Define benzoic acid is a weak acid that has antimicrobial : Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6H5COOH + H2O ==== H+ and C6H5COO- T..
Determine maximum concentration of chlorides to be observed : A non-reactive chloride solution is continuously discharged into an aquifer. The concentration at the discharge location is 800 mg/L. Determine the maximum concentration of chlorides to be observed at an observation well 30 m downstream of the disc..
What arguments can be raised to support the politicization : Indicating how the CAP, the APB, and the FASB operated or operate. Cite specific developments that tend to support your answer.

Reviews

Write a Review

Civil Engineering Questions & Answers

  Tackling the problem of making tunnel

You are a Project Manager on site where work for 3K.m. long Tunnel has been undertaken. The site is remote and takes about 2 days travel to nearest town. Supervisors, Technicians & Skilled Workers are engaged in dangerous / hazardous work.

  Find the strain develope in the sample

a quartzite sample in a compression testing mechine is 180mm long and 54mm in diameter. what is the stress under a load of 100kN? if the modulus of elasticity is 102kN/mm2, find the strain develope in the sample.

  Determine largest load p that can be applied without cable

Determine largest load P that can be applied without any cable exceeding its yield strength. Bar length in 10 ft with aluminum directly in the center and steel cables 5 feet on either side. Steel cable lengths are 8 ft and aluminum cable is 10 ft...

  Assist structural engineer for a bridge replacement project

You should provide the structural engineer with a formal typed report that will include all of your analyses and final size of the footing. You should also include all of your design assumptions in your report.

  Describe what is the natural water content of the clay

a 110 cubic centimeter volume of clay weighs 145 g in its undisturbed state. when the clay specimen is dried it weighs 110.5g. what is the natural water content of the clay, and what is the degree of saturation Assume Gs=2.70

  Determine the restraining force by a concentric reducer

The pipe is connected to a 400mm diameter pipe by a concentric reducer, the gauge pressure at the entrance of the reducer is 3.00 bar and the the energy losses are neglected . Determine the restraining force.

  Determine the angle of twist

A beryllium copper wire having diameter of 1-50 mm and length of 40mm is used as a small torsion bar in an instrument. determine what angle of twist would result in the wire when it is stressed to 250 mpa.

  Horizontal and vertical component from this acting force

What would be the Horizontal and vertical component from this acting force see diagram

  Tighten the packing on a leaking argon valve

A worker needs to enter a confined space to tighten the packing on a leaking argon valve. Describe two procedures that could be used to isolate the argon line and valve prior to starting work.

  Is the work on the ball recoverable

A 1kg ball is dropped from the top of a cliff and falls with a constant acceleration due to gravity. Assume that effects of air resistance can be ignored.

  Factors of safety against sliding and against overturning

Determine the factors of safety against sliding and against overturning, and also the soil pressure at the heel and toe. Assume hydrostatic uplift varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe. consider 1m l..

  Determine the stationing and elevation of the pvcs and pvts

Two level sections of an east-west highway (G=0) are to be connected. Currently, the two sections of highway are separated by a 4000-ft (horizontal distance), 2% grade. The western most section of highway is the higher of the two and is at elevati..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd