Showing papers in "Water Science and Technology in 2012"

TL;DR: Investigation of the substrate uptake pattern of the uncultured Chloroflexi present in an anammox reactor and combined microautoradiography and fluorescence in situ hybridization results indicate that coexisting unculturing Chlor oflexi inAnammox reactors scavenge organic compounds derived from anamm ox bacterial cells.

TL;DR: Overall, the application of PAC in WWTPs seems to be an adequate and feasible technology for efficient MP elimination from wastewater comparable with post ozonation.

TL;DR: In this article, the authors provide an overview of current electric energy consumption of full-scale municipal MBR installations based on literature review and case studies, with special attention given to treated flow, design capacity, membrane area and effluent quality.

TL;DR: The microbiology of syntrophic communities in methanogenic reactor sludges is described and information on which microbiological factors are essential to obtain high volumetric methane production rates is provided.

TL;DR: The feasibility of anaerobic ammonium oxidation (anammox) process to treat wastewaters containing antibiotics and heavy metals (such as the liquid fraction of the anaerobically digested swine manure) was studied in this work and indicated that anammox bacteria could grow even in the extreme conditions tested.

TL;DR: Results from this study demonstrate that dissolved methane recovery could increase net electrical production from low temperature anaerobic processes by ca.

TL;DR: This study characterised the removal of 48 trace organic chemical contaminants, which included steroidal hormones, xenoestrogens, pesticides, caffeine, pharmaceuticals and personal care products, through a full-scale, package membrane bioreactors in New South Wales, Australia.

TL;DR: This study showed that maintenance is both critical and beneficial to restore otherwise poorly performing bioretention, and while deeper media cells did outperform the shallower systems, the improvement in this case was somewhat modest vis-à-vis additional construction costs.

TL;DR: This work examined the entire urban water cycle and developed an innovative water resource management system by integrating freshwater, seawater and reclaimed grey water into a sustainable, low-freshwater demand, high-energy consumption, and low-cost triple water supply (TWS) system.

TL;DR: The findings are that, in general, existing models such as produced by the International Water Association for biological processes are limited by omission of key corrections such as non-ideal acid-base behavior, as well as major processes (e.g., ion precipitation).

TL;DR: A brief review of the fate of micropollutants in membrane-based wastewater treatment due to sorption, stripping, biological degradation/transformation and membrane separation is discussed, to give an overview of these technologies due to the growing importance for water reuse purposes.

TL;DR: Comparison based on the biological treatment showed lower reduction degrees for several pharmaceuticals in trickling filter plants compared with activated sludge plants with nitrogen removal and for many pharmaceuticals it was shown that only a small fraction of the amount sold reaches WWTPs as dissolved parent compounds.

TL;DR: PFOS and PFOA were detected in all 41 cities not only in industrialized areas but also in non-industrialized areas, representing that these compounds undergo long-range transportation in the environment.

TL;DR: The findings show that even a municipal WWTP with secondary biological treatment located in a moderate climate can come close to energy self-sufficiency, however, they also show that such self- Sufficiency is dependent on the strict optimization of the total energy consumption of the plant.

TL;DR: Results showed that a greater amount of nitrogen compounds were released from wheat straw and sawdust than from BP in leaching experiments, indicating that BP is applicable for use as a carbon source for nitrate-polluted groundwater remediation.

TL;DR: Removal of heavy metals from activated sludge proved to be more successful than conventional methods such as incineration, acid extraction, thermal treatment, etc.

TL;DR: The integration study presented here set the basis for the scale-up to a demonstration plant and showed that for 8% DS concentration of the secondary sludge tested in the pilot plant, the process can be energetically self-sufficient, but a fraction of the biogas must by-pass the gas engine to be directly burned.

TL;DR: A first-order model can be used to describe the rice crop residues fermentation effectively and showed that rice straw as well as rice residues from the drying process had the highest biogas and methane yield.

TL;DR: The removal of uncoated ZnO nanoparticles (ZnO NPs) during simulated wastewater treatment processes and its impact on treatment performance were examined, indicating that if the wastewater is treated, the release of Zn o NPs into receiving water bodies would be minimal and Zno NPs would mainly accumulate in biosolids.

TL;DR: The influence of the surface transverse slope on flow characteristics has been demonstrated and it is shown that re-circulation zones can form downstream from the gully and the number and size of these zones is influenced by the transverse terrain slope.

TL;DR: A new meta-heuristic approach based on the nature of honey bees mating has been used for the calibration of a real city in the north of Iran named Langarud to determine the Hazen-Williams roughness factor of the main pipes of the town and a correction factor for the nodal demands in the main nodes of the network.

TL;DR: The extent of inhibition observed was found to be related to the toxicity level, suggesting that a dosage-response relationship exists and an MFC could serve as an early toxicity warning device.

TL;DR: For 26 substances, potential non-compliance with Environmental Quality Standard of Water Framework Directive has been identified in treated wastewater, depending on river flow, mainly for Cd, DEHP, diuron, alkylphenols, and chloroform.

TL;DR: It was found that relatively low sodium levels can bring about significant levels of process inhibition in the presence of high levels of ammonia, and care must be taken in the use of sodium hydroxide for pH adjustment during anaerobic digestion of protein-rich substrates.

TL;DR: The research found in particular that there is the need for long-term monitoring studies of water sensitive urban developments to validate the performance of novel approaches implemented and improve associated guidelines, standards, and regulatory and governance frameworks, which can lead to mainstream acceptance of watersensitive urban development approaches.

TL;DR: The reduction of the aerobic cycle length during intermittent aeration down to 8 min, followed by an anoxic mixing period of only 18 min was successful in inhibiting the activity of NOB organisms, most probably due to their elevated lag-phase compared with ammonium oxidising bacteria.

TL;DR: Analysis of the samples revealed that the plants were not efficient at removing the faecal indicators and pathogens tested during the study, and human adenovirus and Arcobacter spp.

TL;DR: Microwave and PEF (with temperature control) might be best suited for large-scale cell disruption among all techniques investigated and caused significant release of lipid into the medium, which may increase solvent usage and make medium recycling difficult.

TL;DR: In this paper, a benchmark simulation model, which includes a wastewater treatment plant (WWTP)-wide model and a rising main sewer model, is proposed for testing mitigation strategies to reduce the system's greenhouse gas (GHG) emissions.

TL;DR: A new methodology to perform LCA on WWTPs is proposed that is based on net environmental benefit (NEB) evaluation and requires assessing the potential impact of releasing wastewater without and with treatment besides assessing the impact of the WWTP's life cycle.