Effect of temperature on nitrogen removal and biological mechanism in an up-flow microaerobic sludge reactor treating wastewater rich in ammonium and lack in carbon source

Chemically coagulated sewage water gives an effluent low in both suspended matter and organics. To use chemical precipitation as the first step in waste water treatment improves nitrification in the following biological stage. The precipitated sludge contains 75% of the organic matter in the sewage and can by hydrolysis be converted to readily degradable organic matter, which presents a valuable carbon source for the denitrification process. This paper will review experiences from full-scale applications as well as pilot-plant and laboratory studies.

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Alternative solid carbon source from dried attached-growth biomass for nitrogen removal enhancement in intermittently aerated moving bed sequencing batch reactor

Environmental Science and Pollution Research ◽

10.1007/s11356-013-1933-1 ◽

2013 ◽

Vol 21 (1) ◽

pp. 485-494 ◽

Cited By ~ 10

Author(s):

Jun-Wei Lim ◽

Poh-Eng Lim ◽

Chye-Eng Seng ◽

Rohana Adnan

Keyword(s):

Carbon Source ◽

Nitrogen Removal ◽

Sequencing Batch Reactor ◽

Batch Reactor ◽

Solid Carbon ◽

Moving Bed ◽

Attached Growth ◽

Solid Carbon Source

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Woodchips bioretention column for stormwater treatment: Nitrogen removal performance, carbon source and microbial community analysis

Chemosphere ◽

10.1016/j.chemosphere.2021.131519 ◽

2021 ◽

pp. 131519

Author(s):

Lingjie Liu ◽

Fen Wang ◽

Sihan Xu ◽

Wei Sun ◽

Yang Wang ◽

...

Keyword(s):

Microbial Community ◽

Carbon Source ◽

Nitrogen Removal ◽

Community Analysis ◽

Microbial Community Analysis ◽

Stormwater Treatment

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Conditions and technologies of biological wastewater treatment in Hungary

Water Science & Technology ◽

10.2166/wst.2012.062 ◽

2012 ◽

Vol 65 (9) ◽

pp. 1676-1683 ◽

Cited By ~ 4

Author(s):

G. M. Tardy ◽

V. Bakos ◽

A. Jobbágy

Keyword(s):

Wastewater Treatment ◽

Carbon Source ◽

Nitrogen Removal ◽

Wastewater Treatment Plants ◽

Treatment Temperature ◽

Low Carbon ◽

Biological Phosphorus Removal ◽

Wastewater Quality ◽

Removal Technologies ◽

Biological Nitrogen

A survey has been carried out involving 55 Hungarian wastewater treatment plants in order to evaluate the wastewater quality, the applied technologies and the resultant problems. Characteristically the treatment temperature is very wide-ranging from less than 10 °C to higher than 26 °C. Influent quality proved to be very variable regarding both the organic matter (typical COD concentration range 600–1,200 mg l−1) and the nitrogen content (typical NH4-N concentration range 40–80 mg l−1). As a consequence, significant differences have been found in the carbon availability for denitrification from site to site. Forty two percent of the influents proved to lack an appropriate carbon source. As a consequence of carbon deficiency as well as technologies designed and/or operated with non-efficient denitrification, rising sludge in the secondary clarifiers typically occurs especially in summer. In case studies, application of intermittent aeration, low DO reactors, biofilters and anammox processes have been evaluated, as different biological nitrogen removal technologies. With low carbon source availability, favoring denitrification over enhanced biological phosphorus removal has led to an improved nitrogen removal.

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