Explain the secondary treatment for wastewater, Civil Engineering

Assignment Help:

Explain the Secondary treatment for wastewater

Secondary Treatment: to remove soluble BOD that escapes the primary treatment and to provide added removal of suspended solids.  Biological processes (activated sludge (aeration) or trickling filter are the most common one chosen at larger plants). Typically same treatment is provided in the receiving waters but these treatment processes speed up the breakdown of degradable organic pollutants. 

Typically more than 85% of BOD and suspended solids are removed.  However, it does not remove significant amounts of nitrogen, phosphorous or heavy metals or pathogenic bacteria and viruses. Typical Standards: 20 mg/l BOD5, 20 mg/l suspended solids (for discharges to rivers flowing south and flows into Gulf of Mexico).


Related Discussions:- Explain the secondary treatment for wastewater

Explain the perception reaction time, Explain the Perception Reaction Time ...

Explain the Perception Reaction Time A significant variable in the successful processing and use of information is the speed with which this is done. Perception-Reaction Time (

Designing of roadbase material, Question In General Specification for C...

Question In General Specification for Civil Engineering Works, designing of roadbase material is based on recipe approach. Give reason. Answer Designing of roadbase

Calculate the initial height of the stockpile, On a 5-acre level terrain bu...

On a 5-acre level terrain building site, an earthwork contractor has instructed her crew to strip and grub the topsoil of a 60,000-ft 2 proposed building pad to a minus 2-ft sub-g

Counter map, how will you determine the intrtvisibility of a point if the c...

how will you determine the intrtvisibility of a point if the counter map is given to you? explain by giving an exampe

Theories of failure - cases of solids, Theories of Failure - cases of solid...

Theories of Failure - cases of solids: Let us now consider the solid shown in Figure (b). (a)        As the principal stresses are within 260 MPa, the solid is safe ac

Method of section, III. Calculate the magnitude and sense of the member for...

III. Calculate the magnitude and sense of the member forces BC, BG and HG using the method of sections

Keywords of airport management, Keywords of Airport management: Air T...

Keywords of Airport management: Air Traffic Control: A system by which air routes, flight rules for flying aircraft and navigational facilities are provided in an airport.

Explain the properties of poly tetra fluoro ethylene, Explain the Propertie...

Explain the Properties of Poly Tetra Fluoro Ethylene? PTFE is a linear chain polymer of great molecular strength, known for its chemical inertness and low coefficient of fricti

Explain different types of texture and structure of soils, (a) Relate dissi...

(a) Relate dissimilar formations of soils to the geological aspects. (b) Explain different types of texture and structure of soils. (c) Bring out the typical characteristics

Designing considerations for dowel bars, Question What are designing c...

Question What are designing considerations for dowel bars in joints of concrete carriageway? Answer Behaviour of dowel bars resembles that of piles in soils subject

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