Abstract:
:Problems have been found in the traditional post-positioned down-flow biological activated carbon filter (DBACF), such as microorganism leakage and low biodegradability. A pilot test was carried out to place a BACF between the sediment tank and the sand filter; a new technology of dual media up-flow aerated biological activated carbon filter (UBACF) was developed. Results showed that in terms of the new process, the up-flow mode was better than the down-flow. Compared with the DBACF, the problem of microorganism leakage could be well resolved with the UBACF process by adding disinfectant before the sand filtration, and a similar adsorption effect could be obtained. For the tested raw water, the COD(Mn) and NH3-N removal rate was 54.6% and 85.0%, respectively, similar to the waterworks with the DBACF process. The UBACF greatly enhanced oxygen supply capability and mass transfer rate via aeration, and the NH3-N removal ability was significantly improved from 1.5 mg/L to more than 3 mg/L. Influent to the UBACF with higher turbidity could be coped with through the primary filtration of the ceramisite layer combined with fluid-bed technology, which gave the carbon bed a low-turbidity environment of less than 1.0 NTU. The backwashing parameters and carbon abrasion rate of the two processes were almost the same.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Lu S,Liu J,Li S,Biney Edoi
10.1080/09593330.2013.770556subject
Has Abstractpub_date
2013-07-01 00:00:00pages
2345-51issue
13-16eissn
0959-3330issn
1479-487Xjournal_volume
34pub_type
杂志文章abstract::Maghemite/silica nanocomposite microspheres (γ-Fe2O3/SiO2 MS) have been tested as magnetically separable heterogeneous Fenton catalyst in beidellite clay slurries in the presence of methylorange (MO) as a model pollutant. Due to its strong magnetic susceptibility, the catalyst was easily recovered from the clay slurri...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1620865
更新日期:2021-01-01 00:00:00
abstract::Membrane performance is decreased by fouling, reducing permeate flux and membrane lifespan. This paper assesses ultrafiltration of a model textile effluent assisted by permanent magnetic field as an alternative to improve the water permeability recovery. Ultrafiltration was performed in a tangential module and model s...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1094517
更新日期:2016-01-01 00:00:00
abstract::In order to solve the water solubility and difficult re-use of plant polyphenol (PP) in Cd(II) adsorption, PP was immobilized on the surface of magnetic material in this study. A core-shell nanocomposite Fe3O4/SiO2/PP (∼18 nm) was synthesized with 3-8 nm SiO2 and 2-5 nm PP. TGA analysis revealed the PP coating amount ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1811394
更新日期:2020-08-27 00:00:00
abstract::This study evaluates a new method for chemically destroying organic pollutants in wastewater using spontaneous corrosion of iron metal sheet surfaces in the presence of hydrogen peroxide. Model pollutants (phenol and benzoic acid) were degraded in batch experiments to investigate which parameters affected the process ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332608618564
更新日期:2005-03-01 00:00:00
abstract::Sediment borne pesticides are one of the major routes of transport of pesticides into the aquatic environment and could affect biota living closely in contact with it. Sediment residues of DDT were found to be easily adsorbed (95.0%) and were released in hard water (8.4%) and seawater (0.1%). DDT and DDE sediment resi...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332308618318
更新日期:2002-11-01 00:00:00
abstract::The discharge of raw wastewater into the environment can be a contamination source of Giardia spp. cysts and Cryptosporidium spp. oocysts. The UASB (Upflow Anaerobic Sludge Blanket) reactor is the most popular technology applied for wastewater treatment in Brazil, nevertheless there is little information concerning it...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1866083
更新日期:2021-01-07 00:00:00
abstract::Permeable bioreactors have gained both research and management attention as viable methods for treating mine runoff waters. We examined the operation of a field-scale bioreactor (containing mixed compost, straw and gravel) for treatment of runoff from the Mother Load (ML) mine in northern Idaho, U.S. and compared it t...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593331003786277
更新日期:2010-12-14 00:00:00
abstract::Changes in the number and species diversity of cultivable microorganisms in a newly developed plate-type biofilter during filtration of various volatile pollutants were studied. The novelty of the investigation is the monitoring of microorganism succession in different parts of biofilter plates with original packing m...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.965227
更新日期:2015-03-01 00:00:00
abstract::A novel nanocomposite (NC) based on magnetite nanoparticles (Fe3O4-NPs) immobilized on the surface of a cationic exchange polymer, C100, using a modification of the co-precipitation method was developed to obtain magnetic NCs for phosphate removal and recovery from water. High-resolution transmission electron microsco...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1141999
更新日期:2016-08-01 00:00:00
abstract::In this work, the reduction of the moisture content from waste oils by a bentonite-based adsorption process was investigated as an alternative for reuse in energy production. Waste cooking oil (WCO) and waste poultry fat (WPF) were characterised (moisture and viscosity, values of acidity, saponification, and peroxide)...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1728391
更新日期:2020-02-18 00:00:00
abstract::This study developed the 2-step extraction method which eluted the Pb adsorbing on the surface of sediments in the first solution by aqua regia and extracted the Pb absorbed inside particles into the second solution by mixed acid of nitric acid, hydrofluoric acid and hydrogen peroxide solution. We applied the method t...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1478885
更新日期:2019-11-01 00:00:00
abstract::Lead is a heavy metal considered highly toxic, responsible for causing several health problems as well as being extremely harmful to fauna and flora. Given this fact, several techniques have been studied for the removal of this metal from contaminated water, in which stands out adsorption. In this sense, the objective...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1290150
更新日期:2017-12-01 00:00:00
abstract::The capacity of three inocula (sewer biofilm, mangrove and estuary sediment) to utilise typical fermentation products of municipal solid waste for biological sulfate reduction was investigated. Each inoculum was used in two reactors, one fed a mixture of volatile fatty acids and another fed glucose to provide a suite ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1783371
更新日期:2020-06-22 00:00:00
abstract::Accidental water basin pollution seriously threatens human health and ecological security, but rapid, effective methods for evaluating this threat are lacking. This paper aims to develop a risk evaluation method for basin accidents by coupling the risk source with sensitive targets to evaluate the zone accident risk l...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1074723
更新日期:2016-01-01 00:00:00
abstract::In this study, the combined use of a biopolymer chitosan and an oxidoreductase polyphenol oxidase (PPO) was systematically investigated for the removal of bisphenol derivatives from aqueous medium. The process parameters, such as the pH value, temperature, and PPO concentration, were estimated to conduct the enzymatic...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1026285
更新日期:2015-01-01 00:00:00
abstract::One of the requirements for environmental engineering, which is currently being considered, is the removal of ethylene glycol (EG) as a hazardous environmental pollutant from industrial wastewater. Therefore, in a recent study, a moving bed biofilm reactor (MBBR) was applied at pilot scale to treat industrial effluent...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.834947
更新日期:2014-01-01 00:00:00
abstract::Total solids (TS) concentrations ranging from 15 to 66 g L(-1) of starch industry wastewater (SIW) were tested as raw material for the production of Bacillus thuringiensis var. kurstaki HD-1 (Btk) biopesticide in shake flasks and a 15 L bench-scale fermenter. Shake flask studies revealed a higher delta-endotoxin conce...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330902753495
更新日期:2009-04-01 00:00:00
abstract::We consider the use of metallic iron nanoparticles for cleaning contaminated water, focusing our study in the sorption of arsenic compounds. In particular, we discuss the results of their sorption process on the surface of zerovalent iron nanoparticles (nZVI) by performing a complete characterization of the surface mo...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.904932
更新日期:2014-09-01 00:00:00
abstract::Recently, activated carbon was investigated as an efficient heterogeneous metal-free catalyst to directly activate peroxymonosulfate (PMS) for degradation of organic compounds. In this paper, the reuse performance and the possible deactivation reasons of granular-activated carbon (GAC) and activated carbon fiber (ACF)...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1205147
更新日期:2017-03-01 00:00:00
abstract::Poly(m-phenylenediamine) (PmPD) microparticles, from the monomer with two amino groups, were synthesized through chemical oxidation, and the strong adsorbability of mercury ions on to PmPD was systematically examined. The results revealed a rapid adsorption process with an equilibrium time of 30 minutes. Also, the ads...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.572924
更新日期:2012-01-01 00:00:00
abstract::Solid-solution bimetallic alloy catalysts containing no noble metals were developed via both simultaneous and sequential deposition in supercritical water (SCW). These bimetallic nano-catalysts were analyzed by Brunauer-Emmett-Teller, X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron micros...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1439111
更新日期:2019-07-01 00:00:00
abstract::The ability of a laboratory-scale dielectric barrier discharge (DBD) nonthermal plasma reactor at atmospheric pressure was assessed for the removal of bisphenol A (1 mg L(-1)) and tributyltin (10 mg L(-1)) from aqueous solutions. The elimination of both the compounds followed an exponential decay equation, and a first...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.869624
更新日期:2014-05-01 00:00:00
abstract::Since 1994, 200 'green' or natural burial sites have been developed in the UK and Eire, attracting regulatory attention because of perceived risks to groundwater. Here, a survey of natural burial practice in England and Wales (n=49 of 141 elicited) is presented, providing data on operational trends and supporting the ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330802099015
更新日期:2008-01-01 00:00:00
abstract::Investigation of petroleum microbes is fundamental for the development and utilization of oil reservoirs' microbial resources, and also provides great opportunities for research and development of bio-energy. Production water from a high-temperature oil reservoir was incubated anaerobically at 55 degrees C for more th...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.786135
更新日期:2013-09-01 00:00:00
abstract::In industrial activities, operation of air biofilters may be interrupted for a long period of time. In order to examine the effect of shut-down on the performance of biofilters, a pilot scale biofiltration unit was restarted up after a non-use duration of eight months. After a reacclimation period of eight days, the b...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332208618230
更新日期:2001-08-01 00:00:00
abstract::Standard filtration methods have been characterized by poor recoveries when processing large-volume samples of environmental water. A method to pre-remove particulates present in turbid waters would be necessary to enhance recovery of protozoan oocysts. Particulate separation can be achieved by the proposed multiplex ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.851280
更新日期:2014-03-01 00:00:00
abstract::Two different organophilic bentonites obtained by cationic exchange with benzyldimethyloctadecylammonium chloride and trimethyloctadecylammonium chloride have been used to adsorb the organic fraction of a tannery sludge. The exchange process was carried out to different extents to obtain bentonite samples with differe...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332208618309
更新日期:2001-01-01 00:00:00
abstract::Surface-active agents (surfactants) can enhance bioremediation of soils contaminated with PAHs by reducing sorption of PAHs or increasing desorption rates. The effectiveness of nonionic surfactant (Tween 80) and biosurfactants to enhance the solubilization and desorption of phenanthrene (Phe) and pyrene (Pyr) in soil-...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332508618382
更新日期:2004-10-01 00:00:00
abstract::Pyrolysis is potentially an effective treatment of oily sludge for oil recovery, and its kinetics and efficiency are expected to be affected by additives. In the present study, the pyrolysis parameters, including heating rate, final pyrolysis temperature, and pyrolysis time of oily sludge in the presence of agricultur...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1194481
更新日期:2017-02-01 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