Showing papers in "Water Research in 2014"

TL;DR: This work presents a summary of PN/A technologies that have been successfully developed, implemented and optimized for high-strength ammonium wastewaters with low C:N ratios and elevated temperatures and discusses the remaining obstacles.

TL;DR: This review attempts to define the steps still required for FO to reach full-scale potential in wastewater treatment and water reclamation by discussing current novelties, bottlenecks and future perspectives of FO technology in the wastewater sector.

TL;DR: Early observations suggest that activated carbon adsorption, ion exchange, and high pressure membrane filtration may be effective in controlling these contaminants, however, branched isomers and the increasingly used shorter chain PFAS replacement products may be problematic as it pertains to the accurate assessment of PFAS behaviour through drinking water treatment processes.

TL;DR: A novel catalyst based on Fe@Au bimetallic nanoparticles involved graphene oxide was prepared and characterized by transmission electron microscope (TEM), and x-ray photoelectron spectroscopy (XPS), and the nanomaterial was used in catalytic reductions of 4-nitrophenol and 2-nitophenol in the presence of sodium borohydride.

TL;DR: The real wastewater experiment, the regeneration study and the comparative cost analysis showed that the RL-GO composites could be a cost-effective and promising sorbent for MB wastewater treatment owing to its high efficiency and excellent reusability.

TL;DR: Different operation strategies (recirculation, aeration, tidal operation, flow direction reciprocation, and earthworm integration), innovative designs, and configurations for the intensifications of the performance of intensified CWs mainly for the removal of nitrogen and organic matter are reviewed.

TL;DR: The Cu(II) combined with the amino groups through strong complexation based on the comparison of XPS and ATR-FTIR analyses before and after adsorption, which endows it with the high pH stability and ion selectivity.

TL;DR: This review stresses the need to integrate microbial ecology information into conventional denitrification design and operation at full-scale, and a combination of high-throughput approaches is next in line for thorough assessment of wastewater denitrifying community structure and function.

TL;DR: Fluorescence in situ hybridization analysis showed that the abundances of hydrogen-consuming microorganisms including homoacetogens and hydrogenotrophic methanogens with ZVI were higher than the control, which reduced the H2 accumulation to create a beneficial condition for the sludge digestion in thermodynamics.

TL;DR: This is the first study on the fate of ARGs in STP using metagenomic analysis with high-throughput sequencing and hopefully would enhance the knowledge on fate ofARGs inSTP.

TL;DR: The main focus is on the three most significant nutrients, i.e. carbon, nitrogen and phosphorus, and their uptake by microalgae and cyanobacteria; however other nutrients are also reviewed.

TL;DR: It could be shown that HOBr/OBr(-) are the dominant species in fresh waters and in ocean waters, other bromine species such as Br2, BrCl, and Br2O gain importance and may have to be considered under certain conditions.

TL;DR: A quantitative structure-toxicity relationship was developed for the halophenolic DBPs, by employing three physicochemical descriptors (log K(ow), pKa and molar topological index) and gave a good prediction of the algal toxicity of the tested halophenolics DBPs.

TL;DR: This pilot-scale study demonstrates that application of the proposed online aeration control is able to out-select NOB in mainstream conditions providing relatively high nitrogen removal without supplemental carbon and alkalinity at a low HRT.

TL;DR: A membrane bioreactor (MBR) based method for growing a highly enriched anammox microbial community and the intrinsic nitrite half saturation constant was identified to be as low as 35 μg-N L(-)(1).

TL;DR: DEET and nonylphenol can be considered as potential indicator compounds for predicting the occurrence and removal of total PPCPs and EDCs in surface water.

TL;DR: In this article, the current state of wastewater treatment plants (WWTPs) in urban China from the aspects of scale, treatment processes, sludge handling, geographical distribution, and discharge standards was reported and analyzed.

TL;DR: The most representative and newly emerging compounds belonging to the major groups of T&O compounds, such as geosmin, methylisoborneol, benzothiazoles, mercaptans and sulfides as well as aromatic and other miscellaneous T& O compounds, are included in the systematic overview.

TL;DR: This study provides a review that summarizes and discusses the different fundamental mechanisms of metal conversion, with the aim of facilitating the scientific understanding and technology development.

TL;DR: Water treatment techniques such as ferric or alum coagulation, granular/micro-/ultra- filtration, aeration, oxidation, disinfection, and disinfection were mostly ineffective in removing PFASs, however, anion exchange and granular activated carbon treatment preferably removed longer-chain PFAss and the PFSAs compared to the PFCAs, and reverse osmosis demonstrated significant removal for all thePFASs.

TL;DR: An up-to-date review of all the new applications of MECs and their resulting performance, current challenges and prospects of future is provided.

TL;DR: The features of hybrid FO systems are highlighted and the state-of-the-art applications in the water industry in a novel classification and based on the latest developments toward scaling up these systems are provided.

TL;DR: Fluorescence component ratios showed site-specific statistically significant correlations with OM removal, which contrasted with correlations between specific UV absorbance at 254 nm (SUVA) and OM removal that were not statistically significant, indicating that use of fluorescence spectroscopy may be a more robust alternative for predicting DOC removal than UV spectroscopic.

TL;DR: Quantitative response relationships between nitrogen transformation rates and nitrogen functional genes were established, and these relationships confirmed that different nitrogen transformation processes were coupled at the molecular level (functional genes), and collaboratively contributed to nitrogen removal in the TF CW.

TL;DR: Comparing typical doses for practical applications ozonation proved to be more efficient for abatement of sulfamethoxazole, while removal of benzotriazole and iomeprol was comparatively more efficient with activated carbon and DOC-normalized doses were also applied to PAC and correlated better to relative OMP removal than volume proportional PAC addition.

TL;DR: This review not only summarizes information from the current sulfur conversion-based biotechnologies for further optimization and understanding, but also offers new directions for sulfur related biotechnology development.

TL;DR: This review is devoted to the analysis of the technical features of the principal methods described in the literature in order to compare their performances (measuring window, reliability, robustness) and to identify the pros and the cons of each method.

TL;DR: Proabilistic risk assessment showed that 4-methylbenzylidene camphor (4-MBC) posed greater risk to algae, while benzophenone-3 (BP-3) and ethylhexyl methoxycinnamate (EHMC) were more likely to pose a risk to fishes and also posed high risk of bleaching in hard corals in aquatic recreational areas in Hong Kong.

TL;DR: It is shown that AMX can coexist with heterotrophic bacteria at elevated influent COD/N ratios if a sufficiently high SRT is maintained and reached critical values for the slowly growing AMX.

TL;DR: An overview of the application of VUV radiation at 185 nm for water treatment including the transformation of inorganic and organic water constituents, and the disinfection efficiency is given.