Improvement of Nitrogen Removal in WWTP by Nitritation/Denitritation of the Sludge Liquor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F04%3A9123" target="_blank" >RIV/60460709:41210/04:9123 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41210/04:7828

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Improvement of Nitrogen Removal in WWTP by Nitritation/Denitritation of the Sludge Liquor

Original language description

The sludge liquor, which is commonly returned to activated sludge process in WWTP, brings high amount of ammonia there. Nitrogen can be efficiently removed from the sludge liquor before it is rejected in to the main wastewater treatment line. The ammoniaremoval from the sludge liquor helps to lower inorganic nitrogen concentrations in the WWTP effluent. The specific character of the sludge liquor enables the application of nitritation/denitritation method for separate biological treatment. The nitritation/denitritation method was tested in laboratory scale. The efficient oxidation of N-NH4+ to nitrite was achieved at a minimal nitrate production. The tests proved that it is possible to operate the nitritation/denitritation process at very high nitrogen loading rate. There are two operational alternatives of sludge liquor treatment by nitritation/denitritation method: without pH control (lower operational costs and N-removal up to 70 %) or with pH control (higher operational costs and

Czech name

Využití postupu nitritace/denitritace při zpracování kalové vody jako prostředku zlepšujícího schopnost ČOV odstraňovat dusík

Czech description

The sludge liquor, which is commonly returned to activated sludge process in WWTP, brings high amount of ammonia there. Nitrogen can be efficiently removed from the sludge liquor before it is rejected in to the main wastewater treatment line. The ammoniaremoval from the sludge liquor helps to lower inorganic nitrogen concentrations in the WWTP effluent. The specific character of the sludge liquor enables the application of nitritation/denitritation method for separate biological treatment. The nitritation/denitritation method was tested in laboratory scale. The efficient oxidation of N-NH4+ to nitrite was achieved at a minimal nitrate production. The tests proved that it is possible to operate the nitritation/denitritation process at very high nitrogen loading rate. There are two operational alternatives of sludge liquor treatment by nitritation/denitritation method: without pH control (lower operational costs and N-removal up to 70 %) or with pH control (higher operational costs and

Type

D - Article in proceedings

CEP classification

DJ - Pollution and water control

OECD FORD branch

—

Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2004

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Sustain life & secure survival II, Socially and Environmentally Responsible Agribusiness

ISBN

80-213-1197-5

ISSN

—

e-ISSN

—

Number of pages

1

Pages from-to

0-0

Publisher name

Czech University of Agriculture Prague

Place of publication

Prague

Event location

Prague

Event date

Sep 22, 2004

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—