Denitrification at low temperatures using a suspended carrier biofilm process

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Denitrification at low temperatures using a suspended carrier biofilm process. / Welander, Ulrika; Mattiasson, Bo.

In: Water Research, Vol. 37, No. 10, 2003, p. 2394-2398.

Research output: Contribution to journalArticle

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TY - JOUR

T1 - Denitrification at low temperatures using a suspended carrier biofilm process

AU - Welander, Ulrika

AU - Mattiasson, Bo

PY - 2003

Y1 - 2003

N2 - The denitrification process was studied in a stirred lab-scale suspended carrier biofilm reactor at low temperatures (3–20°C). The reactor was filled to 50% with Kaldnes K1 carriers. The denitrification rate showed only a rather weak dependence on the temperature, the rate at 3°C being approximately 55% of that at 15°C. The maximum denitrification rate obtained at 15°C was 2.7 g NOx−-N m−2 carrier d−1. The maximum denitrification rate at 3°C during an 8-day period was found to be constant. During the 8 days, the hydraulic retention time was approximately 1.5 h and the inlet NO3−-N concentration was 30 mg l−1.

AB - The denitrification process was studied in a stirred lab-scale suspended carrier biofilm reactor at low temperatures (3–20°C). The reactor was filled to 50% with Kaldnes K1 carriers. The denitrification rate showed only a rather weak dependence on the temperature, the rate at 3°C being approximately 55% of that at 15°C. The maximum denitrification rate obtained at 15°C was 2.7 g NOx−-N m−2 carrier d−1. The maximum denitrification rate at 3°C during an 8-day period was found to be constant. During the 8 days, the hydraulic retention time was approximately 1.5 h and the inlet NO3−-N concentration was 30 mg l−1.

KW - Psychrotrophic microorganisms

KW - Suspended carrier

KW - Biofilm

KW - Temperature

KW - Denitrification

U2 - 10.1016/S0043-1354(03)00019-8

DO - 10.1016/S0043-1354(03)00019-8

M3 - Article

VL - 37

SP - 2394

EP - 2398

JO - Water Research

JF - Water Research

SN - 1879-2448

IS - 10

ER -