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Activated sludge

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... days has larger voids because of the biodegradation. Keywords: Wastewater treatment; Nanofiltration; Membrane bioreactor; Hollow-fiber membrane; Activated sludge 1. Introduction Membrane technology has been applied in various fields. Microfiltration (MF) and ultra- *Corresponding author. filtratio ...
Desalination 146 (2002)

The filterability of activated sludge is an important factor for the economical operation of membrane bioreactors (MBR). In the literature mainly investigations on sludge ...
Desalination 146 (2002)

... rather than by the contribution of interaction between sludge and the membrane surface. Keywords: Poly(vinylchloride); N-vinyl-pyrrolidinone (NVP); Activated sludge; UV irradiation; Specific resistance 1. Introduction A major obstacle to further incorporation of a membrane process in industria ...
Desalination 146 (2002)

The wastewater from the meat industry was treated in the system linking the processes of: coagulation, biological treatment using the activated sludge method, simultaneous precipitation of phosphor and reverse osmosis. The carried out investigation studies showed that after th ...
Desalination 144 (2002)

... was performed to evaluate the physicochemical properties of dissolved organic carbons (DOC) in the effluents coming from a clinoptilolite amended activated sludge with regard to various sludge retention times (SRTs) singularly run or in combination with a coagulation process. First, four laborator ...
Desalination 243 (2009)

... hydrophobic than hydrophilic membranes. This could give us a good criterion for selecting membrane materials for water reuse practices. Keywords: Activated sludge; Coagulation; Flux; Membrane; Ultrafiltration; Rc; Rf 0011-9164/09/$– See front matter © 2009 Elsevier B.V. All rights reserve ...
Desalination 244 (2009)

This study investigates the effect of cationic polyelectrolytes on the final properties of synthetic and activated sludge. Synthetic sludge was prepared according to established procedures. Activated sludge was produced in a labscale, continuous-flow reacto ...
Desalination 227 (2008)

The study aimed to assess the effectiveness of meat industry wastewater treatment applying two hybrid systems of activated sludge and ultrafiltration in: (1) an aerobic bioreactor in combination with ultrafiltration and (2) a bioreactor equipped with separat ...
Desalination 198 (2006)

Biosorption experiments were performed using different pretreated activated sludge as bioadsorbent for Cu2+, Cd and Ni2+. Pretreatment with NaOH was found to improve the adsorption capacity of the sludge where a ...
Desalination 196 (2006)

The filtration performances of submerged membrane bioreactors (SMBR) with and without the addition of powdered activated carbon (PAC) were investigated respectively under the same feed and operation conditions. A series of experiments were conducted to analyze near... 1.2 g/L PAC. The near-critical flux for the biological powdered activated carbon (BPAC) system was about 32% higher than that for the activated sludge (AS) system. Increasing the air-scouring rate led to a more significant flux improvement for the BPAC system compared to the AS system. Long-ter ...
Desalination 174 (2005)
 

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