Activated sludge

The paper reports on the results of treatment of wastewater from the bottling of water and soft drinks with a membrane bioreactor (MBR) pilot plant. The existing conventional activated sludge process could not produce effluent suitable for discharge due to significant fluctuations of wastewater comp

This study 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

Membrane processes have been used as a key technology for water reclamation and reuse of secondary effluent discharged from municipal wastewater treatment plants. However, its extensive practices are limited due to membrane fouling. To control and manage the membrane fouling properly, pretreatment m

Research on the treatment of two kinds model urban wastewater (W1, W2) with the contents of edible oil were carried out by activated sludge method in the membrane bioreactor. Biodegradation degree for readily and sparingly biodegradable compounds was determined on the basic of COD, BOD and TOC remov

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 reactor which was fed with live activated sludge

This study has investigated in a comparative fashion the effect of cation ions and polysaccharide on the floc formation of both synthetic and activated sludge. Synthetic sludge was prepared according to established procedures; activated sludge was produced in a lab-scale, continuous-flow reactor whi

This study has investigated in a comparative fashion the effect of cations and polyelectrolytes on the characteristics and final properties of both synthetic and activated sludge. Synthetic sludge was prepared according to established procedures; activated sludge was produced in a lab-scale, continu

Sludge from five full-scale flat-sheet submerged membrane bioreactors has been analysed with reference to the key biochemical fouling characteristics of soluble microbial product (SMP) and extracted extracellular polymeric substances (EPS). Correlations have been produced between these parameters, a

It is found that, at the same ML concentration, the specific ammonia utilization rates (nitrification rate) for the conventional BNR system are approximately 1.8 times higher than those found in the parallel MBR–BNR system, probably due to different selective pressures. In contrast, no differences i

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 separate denitrification and nitrification tanks