Abstract:
:Anaerobic ammonium oxidation (ANAMMOX) is an innovative process for the treatment of ammonia-contaminated waters. ANNAMOX is usually preceded by a nitrifying step in which ammonia is partially oxidized to nitrite. The effectiveness of the overall process depends on control of the nitrification and creation of a suitable influent for ANAMMOX. In this work, impacts of ammonia concentration and loading rate on partial nitrification and composition of the resulting effluent were investigated in continuous stirred tank (CSTR) and biofilm reactors fed with various ammonia concentrations (17.6-61.5 mM; 299-1045 ppm). Regardless of ammonia concentration, loading rates from 3.1 to 5.4mM/h in the CSTR and 6.4-12.1 mM/h in the biofilm reactor generated effluents with nitrite to ammonia ratios of 1.2 +/- 0.3 (suitable ANAMMOX influent). Under these conditions, the highest ammonia loading and nitrite production rates in the CSTR and biofilm reactors were 5.4 and 2.5 mM/h (HRT: 3.7 h) and 12.1 and 6.5 mM/h (HRT: 1.6 h), respectively. Results reveal that ammonia loading rate can be used effectively to achieve suitable ANAMMOX influent without the need for precise control of dissolved oxygen (DO). Considering the difficulty in regulating DO in large-scale systems and the need for the nitrifying process to be flexible with respect to various ammonia concentrations, the loading rate appears to be a practical option to control partial nitrification. Verifying the range of ammonia loading rates that generate ANAMMOX influent allows operation of the nitrifying step with any level of ammonia in the feed, with the proper loading rate achieved through adjustment of hydraulic residence time.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Daalkhaijav U,Nemati Mdoi
10.1080/09593330.2013.796006subject
Has Abstractpub_date
2014-03-01 00:00:00pages
523-31issue
5-8eissn
0959-3330issn
1479-487Xjournal_volume
35pub_type
杂志文章abstract::The presence of an ionized carboxyl group in the widely used non-steroidal anti-inflammatory (NSAID) drug diclofenac potassium results in a high mobility of diclofenac and in its low sorption under conditions of slow sand filtration or subsoil passage. No diclofenac degradation was detected in pure water or sludge dur...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.619582
更新日期:2012-06-01 00:00:00
abstract::In the present study, the applicability of light-emitting diodes (LEDs) to a fibrous activated carbon (FAC)/titania (TiO2) composite used for the purification of gas-phase benzene, toluene, ethyl benzene and xylene was evaluated. The surface and morphological properties of the FAC and prepared FAC/TiO2 composite were ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.743591
更新日期:2013-05-01 00:00:00
abstract::In the north of Marrakesh (Morocco), the high anthropogenic activity and the permeable nature of the geological ground makes the water of Jbilet vulnerable to contamination. The results of physico-chemical analyses conducted in 2006 showed that two groups of wells could be distinguished. Groundwater of wells located o...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330802180237
更新日期:2008-11-01 00:00:00
abstract::In this work, the dehalogenation and degradation of halogenated benzenes (chlorobenzenes, bromobenzene) under electron beam radiation were investigated. Several factors affected the degradation of halogenated benzenes by the electron beam radiation method, such as the dose of the electron beam, the initial pH value of...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330802468954
更新日期:2009-02-01 00:00:00
abstract::Organic micropollutants (OMP) in the household and industrial wastewater are not efficiently removed by conventional treatment processes and a significant fraction ends in sludge. Proper valorization technologies become fundamental to attain sustainable sewage sludge management, with anaerobic digestion (AD) as one of...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1534892
更新日期:2020-04-01 00:00:00
abstract::The performance of selenium remediation agents, mainly gamma alumina sorbents and zerovalent metals is greatly inhibited in the presence of large concentrations of sulfate found in selenium-rich agricultural drainage water. It is therefore imperative to remove sulfates from these contaminated waters, prior to their tr...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332608618475
更新日期:2005-10-01 00:00:00
abstract::Slow-release organic carbon-source (SOC) material, a new kind of electron donor for in situ groundwater denitrification, was prepared and evaluated in this study. With starch as a biologically utilized carbon source and polyvinyl alcohol (PVA) as a frame, this material performed controllable carbon release rates and d...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.966767
更新日期:2015-03-01 00:00:00
abstract::Herbal Pharmaceutical wastewater was subjected to physico-chemical treatment using conventional coagulants individually and in combination with different anionic, cationic and nonionic polyelectrolytes. Results indicate cationic polyelectrolyte to be the best polymer. Individually Alum did not give good results but Al...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332608618550
更新日期:2005-04-01 00:00:00
abstract::This study investigates the changes in biodegradability, rheology and metal concentration of wastewater sludge--non-hydrolyzed (raw), sterilized, and hydrolyzed (thermal alkaline pre-treatment) at total solids concentration from 10-50 g l(-1) to ascertain the bioavailability of nutrients for subsequent fermentation. T...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332808618788
更新日期:2007-03-01 00:00:00
abstract::How to utilize the shadows of buildings and greening to jointly improve the thermal cycle of the commercial pedestrian streets in hot and humid areas in southern China is a problem that needs to be discussed. This paper put forward related concepts of the invalid shadow area, valid shadow area, and thermal regulation ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1718215
更新日期:2020-02-06 00:00:00
abstract::This work focused in the evaluation of Oreochromis niloticus fish scales (FS) as biosorbent material in the removal of Zn from a synthetic effluent based on automotive battery industry effluent and, further, a hybrid neutralization/biosorption process, aiming at a high-quality treated effluent, by a cooperative use of...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1441332
更新日期:2019-07-01 00:00:00
abstract::Arsenic present in water bodies causes devastating effects on aquatic organisms and indirectly poses a hazardous threat to human existence. There is an urgent need to develop potential and convincing technologies to troubleshoot this problem. In the present study, an adsorbent has been prepared using the waste red mud...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1681520
更新日期:2019-11-03 00:00:00
abstract::Two phosphate-solubilizing bacterial strains were isolated and identified as Acinetobacter calcoaceticus YC-5a and Enterobacter agglomerans KMC-7 based on the 16S rRNA gene sequence analysis. A. calcoaceticus YC-5a is less well known as a phosphate-solubilizing plant-associated bacterium. The plant growth-promoting pr...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.701234
更新日期:2013-01-01 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::Direct biofiltration of surface water may be considered as pre-treatment for membrane filtration, in order to reduce fouling. The biofiltration process was investigated with regard to biodegradable organic matter and biofilm formation, covering the annual variations under moderately cold climate conditions. Granular a...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332708618717
更新日期:2006-09-01 00:00:00
abstract::Bisphenol A (BPA) is a kind of a controversial endocrine disruptor, and is ubiquitous in environment. The degradation of BPA with the heterogeneous photo-Fenton system was demonstrated in this study. The Fe-Y molecular sieve catalyst was prepared with the ion exchange method, and it was characterized by X-ray radiatio...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.857699
更新日期:2014-03-01 00:00:00
abstract::Biofiltration technology has been recognized as a promising biotechnology for treating the volatile organic compounds (VOCs) present in polluted air. This study aims to investigate the performance of a biofiltration system of Streptomyces griseus sp. DSM-40759 immobilized on activated carbon (PICA S23) towards the ads...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1107623
更新日期:2016-01-01 00:00:00
abstract::This study reports the comparative removal of an emerging contaminant diclofenac sodium (DCF) by UV-254 nm-based advanced oxidation processes (AOPs), i.e. UV/S2O82-/Fe2+, UV/HSO5-/Fe2+ and UV/H2O2/Fe2+ processes. The results demonstrated that by applying [DCF]0 = 0.30 mM and [H2O2]0 = [S2O82-]0 = [HSO5-]0 = 3 mM, kapp...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1770869
更新日期:2020-05-28 00:00:00
abstract::The performance of a vertical and a horizontal subsurface flow wetland (v-SSF and h-SSF), designed for treating domestic wastewater from a single family, was investigated by monitoring total nitrogen (TN), nitrate nitrogen (NO3-N), ammonium nitrogen (NH4-N), total phosphorus (TP), chemical oxygen demand (COD) and the ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.733967
更新日期:2013-05-01 00:00:00
abstract::In the present paper, the removal of aniline by adsorption process onto granular activated carbon (GAC) is reported from aqueous solutions containing catechol and resorcinol separately. The Taguchi experimental design was applied to study the effect of such parameters as the initial component concentrations (C(0,i)) o...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.592228
更新日期:2012-04-01 00:00:00
abstract::Surface-active compounds (SACs) are widely used in different industries as well as in many daily consumption products. However, with the increasing concern for their environmental acceptability, attention has turned towards biological SACs which are biodegradable, less toxic and more environmentally friendly. In this ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1103784
更新日期:2016-01-01 00:00:00
abstract::Stringent water treatment criteria and rapidly growing pollutant loads provoke the demand for retrofitting wastewater treatment plants towards a higher capacity. In this study, we assess a two stage alternating aeration (AA) bioreactor equipped with electroflotation (EF) clarifier, for nitrogen removal within a short ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.788072
更新日期:2013-09-01 00:00:00
abstract::Because of their applications in large numbers of products, Zinc Oxide nanoparticles (nano-ZnO) will inevitably enter into the environment. Nano-ZnO released into the environment will be present in a complex matrix which can cause various chemical and physical transformations and modulate the biological reactivity of ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1445299
更新日期:2019-07-01 00:00:00
abstract::Increasingly stricter ammonia and nitrogen release regulations with respect to wastewater effluents are creating a need for tertiary treatment systems. The moving bed biofilm reactor (MBBR) is being considered as an upgrade option for an increasing number of wastewater treatment facilities due to its small footprint a...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1077272
更新日期:2016-01-01 00:00:00
abstract::This study investigated the utilization of agricultural matrices as the support materials for cell immobilization to improve the technique of bioremediation. Coir, bulrush, banana stem and water hyacinth stem in both delignified and undelignified forms were used to immobilize Burkholderia cepacia PCL3 in bioremediatio...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.781226
更新日期:2013-09-01 00:00:00
abstract::This study aims to evaluate the effect of weathered coal fly ash (CFA) as a drying adjuvant of sewage sludge (SS) to produce a soil amendment. The high amount of SS and CFA creates a complex waste management problem in many countries, requiring more research efforts. Towards a circular economy, CFA can be viewed as an...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1700311
更新日期:2019-12-09 00:00:00
abstract::Greenbelt is a strip of vegetation for which species of trees and shrubs are scientifically chosen and planted to serve a designated purpose such as control of wind erosion, of dust, of noise etc. In the context of air pollution attenuation, greenbelts must be developed around a source of air pollutant in a manner so ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332308618374
更新日期:2002-07-01 00:00:00
abstract::Nanomaterials and/or contaminants are becoming more common in the developing world, but their effects on interspecific interactions are rarely reported, particularly in aquatic ecosystems. Thus, the present study determined the effects of the novel pollutant nano-fumed silica (NFS) on algal control by a macrophyte via...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1404135
更新日期:2019-02-01 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::Research was undertaken to investigate the treatment of fishery washing water using Bacillus sphaericus, and to recover the spores for subsequent use as bioinsecticide to control the population of mosquitoes. This treatment method could reduce pollution due to organic matter by decreasing the value of Chemical Oxygen ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332208618242
更新日期:2001-06-01 00:00:00