Abstract:
:Polystyrene (PS) beads have been studied as a possible filter element, with the aim of increasing the effective production of water in treatment plants. Being a granular material of an effective size of 0.68 mm, sphericity of 0.96 and density of 1046 kg/m3, the use of PS beads may provide washing water savings because they require low velocities for expansion during backwash. However, other aspects must be considered before the adoption of this material, such as the filtration mechanisms associated with it. Analyses of turbidity retention and head loss variation throughout the filter run were observed, and acceptable filtration rates were achieved (pilot tests). There was bit adhesion of particulates on bead surfaces, which was observed by scanning electron microscopy. The beads showed a low adsorption capacity, which was assessed using methylene blue (lab tests).
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Schöntag JM,Moreira FM,Sens MLdoi
10.1080/09593330.2016.1244569subject
Has Abstractpub_date
2017-08-01 00:00:00pages
2013-2023issue
16eissn
0959-3330issn
1479-487Xjournal_volume
38pub_type
杂志文章abstract::Hydrophobic volatile methyl siloxanes (VMS), such as hexamethyldisiloxane (L2) and octamethylcyclotetrasiloxane (D4), present a low solubility in water. An alternative treatment by absorption into hydrophobic absorbents was therefore studied. For this purpose, three different absorbents, motor oil, cutting oil and a w...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.804588
更新日期:2013-11-01 00:00:00
abstract::A new method for the simultaneous determination of cyanuric acid (CA), melamine (MM) and cyromazine (CM) in different water samples was developed by using reversed phase high-performance liquid chromatography diode-array detection (RP-HPLC-DAD). The conditions of HPLC were investigated and optimized. A KROMASIL C18 co...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2010.499543
更新日期:2011-02-01 00:00:00
abstract::Surface transfer and bubble transfer both contribute significantly to oxygen transfer in a diffused aeration system. In the present study, liquid-film-forming apparatus is successfully developed on a laboratory scale to improve considerably the surface transfer via the unique liquid film transfer technique. The experi...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332808618813
更新日期:2007-05-01 00:00:00
abstract::ABSTRACT Biohythane (hydrogen + methane) production in a two stage dark fermentation (DF) and anaerobic digestion (AD) process from food waste (FW) has been studied. This paper investigated the effect of operation temperature, i.e. mesophilic (34 °C) and thermophilic (55 °C) , on biohythane yield and total energy reco...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1869319
更新日期:2021-01-06 00:00:00
abstract::A series of bench-scale nitrification/denitrification tests were carried out with both suspended growth and hybrid bioreactors. The hybrid reactor was filled with plastic (polyethylene) media to evaluate the effects of biofilm. Two types of reactor configurations were tested; 4-compartment and 6-compartment modes. The...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330309385533
更新日期:2003-01-01 00:00:00
abstract::The palm oil mill industry generates palm oil mill effluent (POME) and empty fruit bunches (EFB) as by-products. This study reports the mesophilic co-digestion of POME with EFB. The biochemical methane potential (BMP) of POME and EFB was 0.397 L CH4/g volatile solids (VS) and 0.264 L CH4/g VS, respectively. In a serie...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.826253
更新日期:2013-07-01 00:00:00
abstract::Surface and groundwater from Pangani River Basin (PRB) were sampled in dry and wet seasons, analysed for dissolved organic and inorganic nutrients (N, P, Si and Urea). There was spatial and seasonal nutrients' variability, with enrichment of dissolved inorganic fractions accumulated from natural and anthropogenic sour...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1310305
更新日期:2018-03-01 00:00:00
abstract::Chlorine dioxide is one of the most widely employed chemicals in the disinfection process of a drinking water treatment plant (DWTP). The aim of this work was to evaluate the influence of the adsorption process with granular activated carbon (GAC) on the chlorine dioxide consumption in final oxidation/disinfection. A ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.994043
更新日期:2015-05-01 00:00:00
abstract::Generally, studies on alternative adsorbents focus on adsorbent removal capacity, as a function of pollutant concentration, and other practical aspects, such as costs, environmental impact and end of life costs, that can affect the upscaling of adsorbents for real-life applications, are not explicitly considered. Ther...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1209567
更新日期:2017-03-01 00:00:00
abstract::The present study evaluated the phytotoxicity effect of goat manure (GM) collected from six different regions in South Korea, namely, Chupungnyeong (T1), Hoengseong (T2), Goesan (T3), Sancheong (T4), Jangsu (T5) and Namwon (T6). Phytotoxicity was assessed by means of the analysis of germination index (GI), relative se...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1239657
更新日期:2017-05-01 00:00:00
abstract::Normalizations by TSS or P-PO43- initial concentrations are consistent as they are correlated to the Jar-test performances. Jar-tests results are independent of the wastewater quality variations in terms of TSS and P-PO43- and independent of the WWTP origin of the water. A notable variability in the TSS results indica...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1771433
更新日期:2020-06-01 00:00:00
abstract::Heterotrophic Biofilms, growing in the successive three treatment stages of the RBC reactor in a full-scale wastewater treatment plant in the summer of 2002, were investigated and compared to those growing in the fall of 2001. The seasonal changes in biofilm structure were studied in terms of biofilm thickness, dry so...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332608618581
更新日期:2005-01-01 00:00:00
abstract::Pilot-scale moving bed biofilm reactor (MBBR) is used to investigate the kinetics and biofilm response of municipal, tertiary nitrification at 1°C. The research demonstrates that significant rates of tertiary MBBR nitrification are attainable and stable for extended periods of operation at 1°C, with a maximum removal ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1143037
更新日期:2016-08-01 00:00:00
abstract::Hospital wastewater contains a great variety of pharmaceutical compounds (PhCs), mainly due to excretion by patients. These PhCs, called emerging pollutants, are not fully eliminated in treatment plants, and are consequently detected in various environmental matrices, contributing to bacterial resistance and adverse e...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1255262
更新日期:2017-09-01 00:00:00
abstract::This study evaluated the effects of Al-coagulant sludge characteristics on the efficiency ofcoagulant recovery by acidification with H2SO4. Two sludge characteristics were studied: types of coagulant and textures of the suspended solid in raw water. The coagulant types are aluminium sulphate and polyaluminium chloride...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.679696
更新日期:2012-12-01 00:00:00
abstract::Depositional and flow patterns are first described to gain an understanding of the erosion patterns during hydraulic flushing in a reservoir. Considering the importance of this issue, two modes of flushing operation for control of sedimentation were performed in several experiments with different reservoir geometries....
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330902990162
更新日期:2009-07-01 00:00:00
abstract::The aim of this study was to contribute to the knowledge on the dynamic of the microbial community involved in anaerobic degradation of different concentrations of 2-chlorophenol (2CP, from 28 to 196 mg 2CP-C/L) and a mixture of 2CP and phenol (from 28 to 196 mg phenol-C/L) and its relationship with the respiratory pr...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1010595
更新日期:2015-07-01 00:00:00
abstract::The destabilization of a microbial population is sometimes hard to solve when different biological reactions are coupled in the same reactor as in sequencing batch reactors (SBRs). This paper will try to guide through practical experiences the recovery of simultaneous nitrogen and phosphorus removal in an SBR after in...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330903464043
更新日期:2010-03-01 00:00:00
abstract::A coupled electrochemical process and biological treatment was used to remove a biorecalcitrant antibiotic: sulfamethazine (SMT). The pretreatment was performed in a home-made flow cell involving graphite felt as a working electrode at potentials of 1 and 1.6 V/saturated calomel electrode (SCE); it was followed by a b...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1273395
更新日期:2017-11-01 00:00:00
abstract::The feasibility of reusing hand-washing grey water contaminated with antibacterial hand-washing liquid for irrigation purposes in an urban farm is explored in this case study. Experiments are carried out to investigate if the quality of this grey water allows for its reuse in agriculture as per the guidelines establis...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.704404
更新日期:2013-01-01 00:00:00
abstract::Biomass concentrator reactors (BCRs) are an alternative wastewater treatment technology developed as a possible solution to membrane bioreactors' (MBRs) high construction and energetic costs. BCRs are an alternative based on the same principle of biomass retention, using a coarser filter medium instead of a membrane. ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1410581
更新日期:2019-03-01 00:00:00
abstract::Results from a lab-scale investigation of a hybrid in/out ultrafiltration and powdered activated carbon adsorption PAC/UF for removal of diclofenac (c0 = 5 mg/L) are presented. The efficiency of the process was compared for single pulse and continuous carbon dosing (PAC dose 5 mg/L) in dechlorinated tap water under fl...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1354077
更新日期:2018-09-01 00:00:00
abstract::A mathematical model to simulate the biological processes occurring in a membrane bioreactor (MBR) is presented. The model accounts for different MBR technical features by introducing specific permeability parameters for the applied membrane system. The model considers for the heterotrophic storage process and the for...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1551940
更新日期:2020-06-01 00:00:00
abstract::Large volumes of saline (> 2% w/v NaCl) wastewaters are discharged from many industries; e.g. seafood processing, textile dyeing, oil and gas production, tanneries and drinking water treatment processes. Although anaerobic treatment would be the most cost-effective and sustainable technology for the treatment of many ...
journal_title:Environmental technology
pub_type: 杂志文章,评审
doi:10.1080/09593331003734202
更新日期:2010-07-01 00:00:00
abstract::The objective of this study was to evaluate the performance of an adsorbent, based on a solid residue arising from biodiesel production, for the removal of cationic dyes from wastewaters. The adsorbent was produced by microwave thermal activation. The Freundlich model provided the best fit for equilibrium data, indica...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2010.526965
更新日期:2011-07-01 00:00:00
abstract::Despite being acknowledged as an emerging contaminant, sulphamethazine (SMT) degradation has received scarce attention in the advanced oxidation processes field. Thus, this work addresses the degradation of SMT in water solutions (12 L of 25mgL-1 samples) by means of a photo-Fenton process and a systematic H202 dosage...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.880516
更新日期:2014-08-01 00:00:00
abstract::Confined animal feeding operations are producing large amounts of organic waste with large fractions being mixtures of manure and sawdust. On one hand, the inhomogeneity of the material and the high water content restrict the optimal application of thermal treatment methods. On the other hand, the high concentration o...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1335350
更新日期:2018-07-01 00:00:00
abstract::A continuous tank reactor was used to remove 4-chlorophenol from aqueous solutions, using immobilized soybean peroxidase and hydrogen peroxide. The influence of operational variables (enzyme and substrate concentrations and spatial time) on the removal efficiency was studied. By using the kinetic law and the intrinsic...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.885067
更新日期:2014-08-01 00:00:00
abstract::Pig manure at three different ratios of 12.5%, 25% and 50% (w/w dry weight basis) was amended with a soil spiked with 100 mg kg(-1) each of three polycyclic aromatic hydrocarbons (phenanthrene, anthracene, and pyrene) to investigate its effect on the biodegradation of these PAHs in a bench-scale composting system. An ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332508618438
更新日期:2002-01-01 00:00:00
abstract::The composting of a faeces/ash mixture and food waste in relative proportions of 1:0, 1:1 and 1:3 was studied in three successive experiments conducted in Kampala, Uganda in 216 L reactors insulated with 75 mm styrofoam or not insulated. The faeces/ash mixture alone exceeded 50 degrees C for < or = 12 days in insulate...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330902788236
更新日期:2009-04-14 00:00:00