ǂThe ǂefficiency of a membrane bioreactor in drinking water denitrification

Aleksandra Petrovič (Author), Marjana Simonič (Author)

Abstract

The membrane bioreactor (MBR) system was investigated regarding its nitrate removal capacity from drinking water. The performance of a pilot-scale MBR was tested, depending on the operational parameters, using sucrose as a carbon source. Drinking water from the source was introduced into the reactor in order to study the influence of flow-rate on the nitrate removal and denitrification efficiency of drinking water. The content of the nitrate was around 70 mg/L and the C/N ratio was 3:1. Nitrate removal efficiencies above 90% were obtained by flow-rates lower than 4.8 L/h. The specific denitrification rates varied between 0.02 and 0.16 g/L NO3/ (g/L MLSS.d). The efficiencies and nitrate removal were noticeably affected by the flow-rate and hydraulic retention times. At the maximum flow-rate of 10.2 L/h still 68% of the nitrate had been removed, whilst the highest specific denitrification rate was achieved at 0.2738 g/L NO3/ (g/L) MLSS.d). The maximum reactor removal capacity was calculated at 8.75 g NO3/m3.h.

Keywords

pitna voda;membranski reaktorji;capacity;denitrification;drinking water;efficiency;membrane bioreactor;sucrose;

Data

Language:	English
Year of publishing:	2015
Typology:	1.01 - Original Scientific Article
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
UDC:	66.091
COBISS:	18019350
ISSN:	1451-9372
Views:	856
Downloads:	334
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Serbian (cirilic)
Secondary title:	Efikasnost membranskog bioreaktora za denitrifikaciju vode za piće
Secondary abstract:	U radu je ispitan kapacitet membranskog bioreactora (MBR) za uklanjanje nitrata iz pijaće vode. Testirane su mogućnosti poluindustrijskog postrojenja MBR u zavisnosti od ope- rativnih parametara koristeći saharozu kao izvor ugljenika. Pijaća voda iz izvora je dove- dena u reaktor da bi se analizirao uticaj protoka na efikasnost denitrifikacije i uklanjanja nitrata iz pijaće vode. Sadržaj nitrata je bio oko70 mg/l, a odnos C/N je bio 3:1. Efikasnost uklanjanja nitrata je oko 90% pri protoku manjem od 4,8 l/h. Specifična brzina denitrifikacije je bila u opsegu od 0,02 do 0,16 g/l NO3/(g/L MLSS d). Efikasnost uklanjanja nitrata je značajno zavisila od protoka i hidrauličkog vremena zadržavanja. Pri maksimalnom protoku od 10,2 L/h moguće je uklanjanje do 68% nitrata, dok je ostvarena najveća specifična brzina denitrifikacije od 0,2738 g/L NO3/(g/L) MLSS d). Izračunato je da je maksimalni kapacitet uklanjanja nitrata 8,75g NO3/m3 h.
Secondary keywords:	zmogljivost;denitrifikacija;pitna voda;učinkovitost;membranski bioreaktor;saharoza;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 269-275
Volume:	ǂVol. ǂ21
Issue:	ǂno ǂ2
Chronology:	2015
DOI:	10.2298/CICEQ131129026P
ID:	9142693