What is activated sludge process, Civil Engineering

Assignment Help:

Q. What is Activated Sludge process?

The term Activated Sludge is used to indicate the sludge which is obtained by settling sewage in presence of abundant oxygen. The Activated Sludge is biologically active and it contains a large number of aerobic bacteria and other micro organisms which have got an unusual property to oxidise organic matter.

Activated Sludge is mixed with raw or partially treated sewage. When Activated Sludge is mixed properly with sewage containing ample or sufficient quantity of oxygen, micro organisms present in Activated Sludge multiply rapidly as result of this.

a) Organic solids present in sewage are rapidly oxidised.

b) Suspended and colloidal matters coagulate and they from a readily settleable precipitate.

After such precipitate settles down the effluent which is obtained is clear and sparking. The effluent contains very low amount of organic matter. A portion of settled sludge is sent for recirculation and the remaining part is sent to sludge digestion tanks. The digested sludge is harmless.


Related Discussions:- What is activated sludge process

What do you mean by base fixity, Q. What do you mean by Base fixity? B...

Q. What do you mean by Base fixity? Base fixity When structures such as portal frames are associated to the base foundation, engineers have to determine the degree of fix

Binomial distribution - exact probability, Binomial Distribution - exact pr...

Binomial Distribution - exact probability: For the binomial distribution having n = 10, y = 0.4, find p (X ≤ 4) using equations and verify that equation gives a better approxi

Is codes for building design, IS CODES FOR BUILDING DESIGN The codes w...

IS CODES FOR BUILDING DESIGN The codes which help engineers to design buildings are following: 1. IS 456-2000. For the design of plain and reinforced concrete it is code

Advantages of using top-down approach, Question What are major advantag...

Question What are major advantages of using top-down approach in basement construction? Answer The main advantages of top-down approach are listed below- (i) Stru

Surveying, define principles of survey

define principles of survey

Method of observation by satellite, Q. Method of observation by satellite? ...

Q. Method of observation by satellite? The difference between a photographs and imageries needs to be understood first. A photograph covers a specific area within its view and

Steel, sir i want to know that which pages of IS800:2007 is used for steel ...

sir i want to know that which pages of IS800:2007 is used for steel design of tension member, compression member, collumn, beam, connections, trusses etc.. please give me the topic

What is preset mean while installation of bridge bearings, What is preset m...

What is preset mean while installation of bridge bearings ?

Fundamental purpose of surveying, give a brief definition of surveying and ...

give a brief definition of surveying and describe its fundamental purposes

Explain cercla and sara - hazardous waste regulations, Explain CERCLA and S...

Explain CERCLA and SARA - Hazardous Waste Regulations In 1980, the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) was enacted to address tho

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