A novel bioelectrochemical reactor assembled with cooperative cathodes of chemical cathode and bio-cathode (BER CC ) excess sludge as the anodic substrate obtained continuous effective Cr(VI) reduction. Cooperative in BER stimulated growth electrochemically active microorganisms such Geobacter sp. Shewanella biofilm produced 8.21 ± 0.64 mg C/(L·h) more electrons than dual cathodes, which enhanc...

Control of sludge bulking in an SBR-plant treating slaughterhouse wastewater Linda Jonsson In December 2003 the new plant treating slaughterhouse wastewater from KLS was taken into operation. Läckeby Water Group was entrepreneur and responsible for the maintenance during the following two years. The treatment plant is of SBR-type and has biological nitrate removal and chemical precipitation of ...

The combination of heavy metals and extracellular polymeric substances (EPSs) affects the distribution in microbial aggregates, soil, aquatic systems. This paper aimed to explore binding mechanisms EPSs different molecular weights activated sludge with metals. We extracted stratification components divided into five fractions weight ranges. In three-dimensional fluorescence analysis each fracti...

The highly variable characteristics of waste activated sludge (WAS) hinder the comparison experimental results on WAS bioconversion between different studies that use excess from origin. Sludge grown under laboratory conditions with synthetic wastewater as feed showed high resistance to commonly applied pre-treatment techniques, such thermal pre-treatment. However, a distinctly higher this was ...

hyperandrogenism affects 2-6% of all women. hypertension is one of disturbances which is related to androgen excess. higher intakes of vitamin c and vitamin e have been associated with lower blood pressure. tho investigate the effect of these vitamin supplementation on blood pressure in hyperandrogenic women, a randomized, double-blind, placebo-controlled study was designed on 56 women 18-54 ye...

Sewage sludge management at wastewater treatment plants is becoming a more and challenging task. Here, an innovative integrated modeling approach developed to investigate the optimization of municipal plant (MWWTP) by inclusion hydrothermal carbonization (HTC). To this aim, two alternative layouts have been considered: (i) conventional activated sludge-based plant, i.e., based on thickening, st...

Alternate cycling of sludge in aerobic, anoxic, and anaerobic regimes is a promising strategy that can reduce the sludge yield of conventional activated sludge (CAS) by up to 50% with potentially lower capital and operating cost than physical- and/or chemical-based sludge minimisation techniques. The mechanisms responsible for reducing sludge yield include alterations to cellular metabolism and...

The main objective of this study was to investigate the rheology of mixed primary and secondary sludge and its dependency on solid content and temperature. Results of this study showed that the temperature and solid concentration are critical parameters affecting the mixed sludge rheology. It was found that the yield stress increases with an increase in the sludge solid content and decreases wi...

To understand the diversity and abundance of antibiotic resistance genes (ARGs) in pharmaceutical wastewater treatment bioreactors, the ARGs in sludge from two full-scale pharmaceutical wastewater treatment plants (PWWTPs) were investigated and compared with sludge samples from three sewage treatment plants (STPs) using metagenomic approach. The results showed that the ARG abundances in PWWTP s...