The sewage treatment plant was monitored to determine the efficiency of technologies employed to reduce microbiological threats. Every four weeks, for a year, sewage was sampled to investigate the effects of post-mechanical and post-biological treatment. Changes in Escherichia coli, D-group streptococci and Salmonella spp. number were analyzed. The reduction of the bacteria in sewage treated me...

To modernize wastewater treatment plants, a pilot-scale anaerobic/anoxic/oxic-vibrating membrane bioreactor (A2/O-VMBR) was developed and successfully operated. Despite low C/N ratio, the A2/O-VMBR achieved removal rates of 61.10%, 93.77%, 72.86%, 54.75% for COD, TN, TP, NH3-N, respectively. The maximum extremity transmembrane pressures were 45 kPa, 80 respectively, with no sludge bulking obser...

Nowadays the field of centralized control is linked to major production processes or industrial applications, where the flow of information allows optimizing the total production process. In the area of small to medium enterprises (SMEs) (Wang & Kai-Yi, 2009), however it is still underdeveloped (Liao, 2009). Perhaps the reason is not the lack of capacity for the design or the cost of the techno...

Removal of sulfide species from municipal sewage conveyance systems by dosage of iron salts is a relatively common practice. However, the reactions that occur between dissolved iron and sulfide species in municipal sewage media have not yet been fully quantified, and practical application relies heavily on empirical experience, which is often site specific. The aim of this work was to combine t...

The reuse of treated municipal sewage ('biosolids') on land is an effective method to divert waste away from landfill and to use an alternative, low cost method of fertilisation. While legislation has mainly focused on the control of nutrient and metal application rates to land, other potentially harmful emerging contaminants (ECs) may be present in biosolids. Up to 80% of municipal sewage slud...

The occurrence of eight pharmaceuticals (beta-blockers: acebutolol, atenolol, metoprolol and sotalol; antiepileptic: carbamazepine; fluoroquinolone antibiotics: ciprofloxacin, norfloxacin, ofloxacin) were assessed in the raw and treated sewage of 12 sewage treatment plants (STPs) in Finland. The average concentrations in the raw and treated sewage ranged from 100 to 1060 ng L(-1) and from <24 t...

The methanotrophic potential in sewage treatment sludge was investigated. We detected a diverse aerobic methanotrophic community that potentially plays a significant role in mitigating methane emission in this environment. The results suggest that community structure was determined by conditions specific to the processes in a sewage treatment plant.

Wastewater samples collected from two sewage treatment plants (STPs) in Guangzhou, China were acidified, solid-phase extracted (SPE) with Oasis HLB cartridges, followed by instrumental measurement by high performance liquid chromatography (HPLC) coupled with a diode array UV detector (DAD) and a fluorescence detector (FLD) for the occurrence and fate of antimicrobial compounds sulfadiazine (SDZ...