Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 348653

Effects of Activated Sludge on Hydrodynamic Characteristics of a Hollow Fiber Membrane Bioreactor


Čurlin, Mirjana; Korajlija-Jakopović Helena; Mijatović, Ivan; Kurtanjek, Želimir
Effects of Activated Sludge on Hydrodynamic Characteristics of a Hollow Fiber Membrane Bioreactor // Acta chimica Slovenica, 54 (2007), 4; 713-718 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 348653 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Effects of Activated Sludge on Hydrodynamic Characteristics of a Hollow Fiber Membrane Bioreactor

Autori
Čurlin, Mirjana ; Korajlija-Jakopović Helena ; Mijatović, Ivan ; Kurtanjek, Želimir

Izvornik
Acta chimica Slovenica (1318-0207) 54 (2007), 4; 713-718

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
activated sludge ; membrane bioreactor ; hydraulic residence time HRT

Sažetak
A submerged hollow fiber membrane module is a widely accepted wastewater membrane bioreactor. Membrane bioreactor with submerged membrane (HF MBR)is complex multiphase physico-chemico-biological system with internal interactions between process variables and dynamic changes within gas-liquid-solids phases.A study of hydrodynamics in an operating laboratory bioreactor at realistic working conditions is crucial for design and scale up of a bioreactor for wastewater treatment processes.Accumulation of high concentrations of biomass causes the occurrence of heterogeneous regions in a bioreactor. This paper focuses on the effects of activated sludge on average residence time, which is often quite different from the ideally designed hydraulic residence time (HRT)in a submerged hollow fiber membrane bioreactor. In this work, tracer experiments using Dirac δ impulse of the saturated NaCl solution and monitoring electrical conductivity in the outflow with a flow-through conductivity cell were performed. From experiments at liquid flow rate range of 7.2 – 16.5 L/h , air flow rate range of 1.7 – 5.1 m3/h , and activated sludge concentrations MLSS 4.5 – 7.4 g/L probability density of residence time distribution (RTD)functions for hollow fiber membrane bioreactor and average residence times τ MBR were calculated The relative residence time defined as the ratio of HF MBR τ MBR and CSTR τ id were evaluated as function of MLSS concentration.Proposed is a linear regression model of the relative residence time with MLSS concentration.The model has negative proportionality coefficient k =– 0.0814 g/L of MLSS due to decrease of the relative residence time with increase of active sludge concentration. Statistical evaluation of the model gives the correlation coefficient of R2 =0.8374.Decrease of the mean residence time with increase of MLSS is discussed inview of non-uniform membrane fouling.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Biotehnologija



POVEZANOST RADA


Projekti:
058-0582171-2173 - Obrada otpadnih voda i začepljivanje membrana u membranskom bioreaktoru (Mijatović, Ivan, MZOS ) ( POIROT)
058-1252086-0589 - Matematičko modeliranje, optimiranje i upravljanje biotehnoloških procesa (Kurtanjek, Želimir, MZOS ) ( POIROT)

Ustanove:
Prehrambeno-biotehnološki fakultet, Zagreb

Citiraj ovu publikaciju

Čurlin, Mirjana; Korajlija-Jakopović Helena; Mijatović, Ivan; Kurtanjek, Želimir
Effects of Activated Sludge on Hydrodynamic Characteristics of a Hollow Fiber Membrane Bioreactor // Acta chimica Slovenica, 54 (2007), 4; 713-718 (međunarodna recenzija, članak, znanstveni)
Čurlin, M., Korajlija-Jakopović Helena, Mijatović, I. & Kurtanjek, Ž. (2007) Effects of Activated Sludge on Hydrodynamic Characteristics of a Hollow Fiber Membrane Bioreactor. Acta chimica Slovenica, 54 (4), 713-718.
@article{article, year = {2007}, pages = {713-718}, keywords = {activated sludge, membrane bioreactor, hydraulic residence time HRT}, journal = {Acta chimica Slovenica}, volume = {54}, number = {4}, issn = {1318-0207}, title = {Effects of Activated Sludge on Hydrodynamic Characteristics of a Hollow Fiber Membrane Bioreactor}, keyword = {activated sludge, membrane bioreactor, hydraulic residence time HRT} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus





Contrast
Increase Font
Decrease Font
Dyslexic Font