Environmental Question, Civil Engineering

Assignment Help:
An activated sludge tank treats 1 MGD from the primary clarify and has an X of
2200 ppm SS. The water euent is 0.9 MGD. 1.0 MGD of the sludge is recycled back into the tank
and has an [SS] of 3980 ppm. The concentration of the BOD exiting the primary clarier is 200
ppm.
(a) What are Qw and Xw?
(b) What are Qc and Xc?
(c) What are Q1 and X1?
(d) What is Xe? (Answer = 24.4 ppm)
(e) Calculate the volume of the tank that will satisfy the following requirements:
(e-1) BOD loading < 35 lb BOD/1000 ft3day
(e-2) Sludge age > 5 days
(e-3) Aeration period > 4 hr

Related Discussions:- Environmental Question

Statics - SFD & BMD Calculations, Could someone please help me with the cal...

Could someone please help me with the calculations of determining the sfd & bmd for cantilevers with udl''s, lvl''s and point loads? Also could I please have the same for ssb with

Enumerate the limit state of serviceability, Limit State of Serviceability ...

Limit State of Serviceability Deflection In the consideration of this limit state, the deflection of a structural member is considered. The code recommends that the deflection

Define equipments for inspection of steel/cast iron, Define Equipments and ...

Define Equipments and tools for Inspection of Steel/Cast Iron Substructures? To ensure thorough inspection, the area must be cleared of all marine growth. Hand tools such as wi

Calculate the amount of cubic yards of soil, A proposed building site requi...

A proposed building site requires 135,000-ft 3 of imported fill.  A borrow site is located 5-miles Northeast of the project site where the soil has a shrinkage of 16%.  The amount

Calculate the specific gravity of the soil particles, A piece of clay taken...

A piece of clay taken from a sampling tube has a wet weight of 1.553 N and volume of 95.3 cm 3 . After drying in an oven for 24 hours at 105°C, its weight 1.087 N. Suppose the spec

NERNST EQUATION, HOW CAN I MAKE ASSIGNMENT ON THIS TOPIC

HOW CAN I MAKE ASSIGNMENT ON THIS TOPIC

Marine facilities, define and explain various marine facilities

define and explain various marine facilities

Write Your Message!

Captcha
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