Showing papers in "Water Science and Technology in 2016"

TL;DR: Recommendations on items that strongly influence the outcome of BMP tests such as inoculum characteristics, substrate preparation, test setup, and data analysis are presented to increase the probability of obtaining validated and reproducible results.

TL;DR: This review applies lessons learned from the literature on microplastics in the aquatic environment and knowledge on current wastewater treatment technologies to identify the research gaps in terms of (i) the fate of microplastic in WWTPs, (ii) the potential interaction of wastewater-basedmicroplastics with trace organic contaminants and metals, and (iii) the risk for aquatic organisms.

TL;DR: This paper reviews the existing legislative frameworks and policies on sewage sludge management in various countries, highlighting the common ground as well as the different priorities in all cases studied.

TL;DR: An in-depth perspective on the design, application and efficiency of hydrogel systems as adsorbents for heavy metal removal in aqueous phase is provided.

TL;DR: The novelty herein is that the new methodology can be added to SWMM without the need for editing SWMM's original code, and is directly applicable to other coupled overland flow models aiming to use SWMM 5 as the sewer network model.

TL;DR: The concentrate produced by the nitrification/distillation process is low in heavy metals, but high in nutrients, suggesting a good suitability as an integral fertilizer.

TL;DR: According to the results sodium alginate has a high performance in adsorption of Acid Red 18, indicated that modified adsorbent can adsorb the pollutants 6.5 times more than the other one.

TL;DR: It was found that the sole intermittent aeration strategy is not a sufficient method for successful suppression of nitrite oxidizing bacteria in MBBR and the best performance of the process was achieved in IFAS mode.

TL;DR: The paper suggests a new dewatering index, namely the modified centrifugal index, which is demonstrated to be an appropriate indicator for estimating the final cake solids content as well as simulating the prototype de watering process.

TL;DR: Major improvement in polluted wastewater quality treated with the proposed method render it safe to be discharged freely in larger water bodies as per the National Environmental Quality Standards (NEQS) of Pakistan or to be reused safely for irrigation purposes; thus, FTWs provide a sustainable and affordable approach for in situ remediation of sewage and industrial wastewater.

TL;DR: An overview of CFD applied to a wide range of unit processes in water and WWT from hydraulic elements like flow splitting to physical, chemical and biological processes like suspended growth nutrient removal and anaerobic digestion is provided.

TL;DR: It was concluded that lower organic carbon levels enhanced the activity of anoxic ammonium-oxidizing bacteria (AnAOB) over denitrifiers as a result of the contribution of AnAOB to nitrogen removal increased from 40 to 70%.

TL;DR: The results of this study indicate that the oxidized MWCNTs can be used as an effective adsorbent for TC removal from aqueous solutions.

TL;DR: A new zinc chloride impregnated activated carbon (Zn-AC) was prepared from oak charcoals as low-cost material and used as adsorbent for tetracycline (TC) adsorption, indicating this advertisersorbent is a good adsorbents for the removal of TC from aqueous solutions.

TL;DR: Both the laboratory reactor and on-site process showed that higher influent 5-day biochemical oxygen demand/total nitrogen (BOD(5)/TN) (COD/TN) ratio increases the nitrogen removal efficiency of the process.

TL;DR: Many compounds were better removed in aerobic condition, suggesting that aerobic heterotrophic organisms were involved in the degradation of micropollutants, compared with conventional nitrifying WWTPs.

TL;DR: This paper summarizes the recommendations for GMP of the IWA working group on CFD and provides an overview of GMP, which, though it is written for the wastewater application, is based on general CFD procedures.

TL;DR: The PAC-UF technology appears to be the most appropriate technology, attaining the highest composite value regarding the sustainability performance, for each tertiary wastewater treatment technology evaluated.

TL;DR: The distribution and toxicity levels of 16 EPA priority pollutant polycyclic aromatic hydrocarbons in the sediments of Asaluyeh shore, Iran showed that PAH levels are much higher in the industrial areas in comparison with urban areas and adverse ecological risk effects frequently occur.

TL;DR: The equilibrium and kinetic study revealed that the Radke-Prausnitz isotherm and pseudo second order kinetics model fitted the respective data well and showed the spontaneous and exothermic nature of the adsorption process.

TL;DR: It is concluded that effluents disperse ARGs, MGEs and pathogenic bacteria within a river catchment, thereby contributing to environmental reservoirs of ARGs.

TL;DR: It can be postulated that eucalyptus bark and Crataegus oxyacantha core-based activated carbon could be of great potential as a new class of adsorbents for organic dye removal from polluted water.

TL;DR: A central composite design (CCD) module in response surface methodology was employed to optimize the interactions of process variables, namely current density, contact time and initial pH targeted on maximum removal of chemical oxygen demand, colour and turbidity with satisfactory pH of discharge POME.

TL;DR: Results revealed that biodegradation could possibly be used for remediation of textile effluents, however, detoxification monitoring is crucial and should always be used to evaluate the bio-efficiency of a treatment technique.

TL;DR: It is recommended that if land requirements can be met, winery effluent should be stored in ponds prior to treatment, and it is possible that bacterial and algal nitrogen fixation in such systems may enhance biological wastewater treatment by natural nitrogen supplementation.

TL;DR: Graphene was used for evaluation of its adsorption behavior and performance in removing phthalate esters and pharmaceuticals in municipal wastewater and it was found that the Adsorption isotherm data were fitted well to Langmuir model equation.

TL;DR: It was found that the content of dissolved oxygen in water could be restored on the basis of the application of aeration techniques ahead, and the biofilm technique would be effective in purifying water in black-odor rivers.

TL;DR: The aim of the work was to reproduce the hydraulic performance of a previously tested grated inlet under several flow and geometric conditions using Flow-3D as a virtual laboratory to allow inlet efficiencies to be obtained without previous experimental tests.

TL;DR: Ozonation of secondary wastewater attained the South African water standards in terms of COD required for wastewater discharge and dissolved organic carbon in drinking water and increased significantly the biodegradability of primary wastewater.

TL;DR: Existing ABR investigations yield encouraging results, supporting that the ABR may be one of the solutions answering the global call for low-maintenance, robust treatment systems, and most laboratory-scale studies do not factor in important aspects of field operation.