nitrification Articles

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Nitrogen balance and transformation in the nitrification process of coking wastewater and the influence on nitrification kinetics

by IWA Publishing  (Apr. 10, 2014)

This paper describes the total nitrogen balance, and the direction and degree of nitrogen transformation during the nitrification process of coking wastewater. According to the actual nitrification process, the conventional nitrification kinetic equation was amended. After 48 h of nitrification, the total nitrogen content remained almost the same ...

Recovery of Nitrification pharmaceutical company case study

by Bio Systems Europe  (Aug. 9, 2013)

One Sunday in May our weekend standby service received a telephone call from a pharmaceutical company who’s waste water treatment system had suffered a plant upset, thought to have occurred the previous day, resulting in the loss of nitrification. The standard to be maintained is 10 mg/l. Because of the urgency of the situation our team ...

Nitrification Insurance

by Cleveland Biotech Ltd  (Apr. 1, 2011)

A market leader in biomass engineering has launched a 24-hour biological safeguard system to protect organisations operating treatment plants against discharging illegal levels of ammonia. North East-based Cleveland Biotech (CB) has seen an increase in enquiries for its Amnite NS5000 product from companies which are obliged to prove to authorities ...

Nitrification in Monochloramine-Treated Water Systems

by LuminUltra Technologies Ltd.  (Jan. 21, 2013)

A Water utility based int the Midwest USA uses Monochloramine treatment to treat their two surface water treatment plants to disinfect raw water and establish residual disinfectant prior to discharge to their distribution system.  Like most water utilities that use Monocholoramines, a common area of concern is nitrification. Residual ammonia ...

Factors influencing nitrification in point-of-use BioSand filters

by IWA Publishing  (Aug. 29, 2013)

The BioSand filter (BSF) is a point-of-use treatment technology used in developing countries to improve drinking water quality. Studies on the BSF to date have mainly focused on bacterial, protozoan and virus reduction and less on the filter's effect on chemical contaminants that may also affect human health. This study explored the ...

The effect of soil properties on the toxicity of silver to the soil nitrification process

by John Wiley & Sons, Ltd.  (Feb. 1, 2014)

Silver (Ag) is being increasingly used in a range of consumer products, predominately as an antimicrobial agent, leading to a higher likelihood of its release into the environment. This study investigated the toxicity of Ag to the soil nitrification process in a European and Australian soils in both leached and unleached conditions. Overall, ...

Efficient Nitrification / Denitrification in Wastewater Treatment

by IET-Aquaresearch Ltd.  (Feb. 21, 2012)

Requirements for Efficient Nitrification / Denitrification  Two principle factors influence the efficiency of the nitrification  / denitrification processes: the biological community and the water physico-chemistry.  Nitrification requires specific conditions, and treatment must follow an ordered procedure.  Reduction of ...

Battling nitrification with blacklights

by American Water Works Association (AWWA)  (Apr. 21, 2010)

THE LOS ANGELES DEPARTMENT of Water and Power suspended a bank of fluorescent blacklights in the head-space of Mount Washington Tank 2 in July 2009. The idea was to test whether standard overhead light fixtures could supply enough near-ultraviolet (UVA) radiation to prevent nitrification onset in covered storage facilities containing chloraminated ...

Nitrous oxide formation during nitritation and nitrification of high-strength wastewater

by IWA Publishing  (Jun. 11, 2013)

The purpose of this study was to investigate the formation of nitrous oxide (N2O) in nitritation and nitrification under stable, comparable and not limiting conditions typical for treatment of high-strength wastewater. A laboratory-scale aerated chemostat was operated with reject water at different sludge retention times, achieving suppression of ...

Nitrification rate determination by means BM respirometry

by SURCIS, S.L.  (Jul. 15, 2011)

1. Nitrification rate We can define nitrification rate as the velocity at which the ammonium‐nitrogen is being oxidized by the actual dissolved oxygen in the aerobic zone of the biological reactor. Nitrification rate is the most important parameter within the Nitrification since, depending of its value, the ammonium removal will get enough ...

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