Coagulation-flocculation-sedimentation, Mechanical Engineering

Assignment Help:

2. Assume that the river has been selected as the source of raw water for the 2.0mgd demand.

a. Surface water has low alkalinity, high turbidity. The distribution system is cast iron pipe. What's the concern with using alum (Al2(SO4)3) as the coagulant. What other chemical could be used?

b. A slow sand filter will follow the coagulation-flocculation-sedimentation. The organic content in the raw water supports a biofilm on the filter surface. How might this reduce the disinfectant dosage? What text Figure shows this?

c. The 4' thick filters run q=500 gpd/ft2. Find the total area of filter surface required to treat the 2.0 mgd. Also compute the hydraulic residence time in the filter.

d. The filtered water still has traces of ammonia and dissolved organics. Calcium hypochlorite Ca(OCl)2 is used for disinfection. What's the advantage, what's the potential problem with using the hypochlorite rather than using ultraviolet (UV)?


Related Discussions:- Coagulation-flocculation-sedimentation

Reversible and irreversible processes - thermodynamics, Reversible and irre...

Reversible and irreversible processes: Thermodynamic system which is capable of restoring the original state of it by reversing the factors responsible for occurrence of proc

Explain concept of radial drilling machine, Concept of Radial Drilling mach...

Concept of Radial Drilling machine Radial Drilling machine is a large gear headed drill press in which the head moves along the arm that radiates from the column of the machine

Explain feed - cutting parameters, Explain Feed - Cutting Parameters ...

Explain Feed - Cutting Parameters 1. In cylindrical grinding feed is the longitude movement of the work piece per revolution. f=Feed in mm per work piece revolut

Power sources-inverter type power sources, INVERTER TYPE POWER SOURCES Fo...

INVERTER TYPE POWER SOURCES For site welding and repair applications, a need was felt for long time to have light weight arc welding power source. Even though, a petrol driven ro

Communication, is effective commucation an intergral aspect in the mecheni...

is effective commucation an intergral aspect in the mechenical engineering field?

Cam, Ask question explin opiz code #Minimum 100 words accepted#

Ask question explin opiz code #Minimum 100 words accepted#

Vessel rigging analysis, Impact Factor on Vessel rigging analysis? Unle...

Impact Factor on Vessel rigging analysis? Unless otherwise specified by the user, a minimum impact factor of 1.5 shall be applied to the lift weight for designing the lifting d

EM13939497, Do the answers come with the full calculations?

Do the answers come with the full calculations?

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