Abstract:
:Post-treatment of anaerobic reactor effluent with maturation ponds is a good option for small to medium-sized communities in tropical climates. The treatment line investigated, operating in Brazil, with an equivalent capacity to treat domestic sewage from 250 inhabitants, comprised a upflow anaerobic sludge blanket reactor followed by two shallow maturation ponds (unbaffled and baffled) and a granular rock filter (decreasing grain size) in series, requiring an area of only 1.5 m2 inhabitant-1. With an overall hydraulic retention time of only 6.7 days, the performance was excellent for a natural treatment system. Based on over two years of continuous monitoring, median removal efficiencies were: biochemical oxygen demand = 93%, chemical oxygen demand = 79%, total suspended solids = 87%, ammonia = 43% and Escherichia coli = 6.1 log units. The final effluent complied with European discharge standards and WHO guidelines for some forms of irrigation, and appeared to be a suitable alternative for treating domestic sewage for small communities in warm areas, especially in developing countries.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Dias DFC,Passos RG,Rodrigues VAJ,de Matos MP,Santos CRS,von Sperling Mdoi
10.1080/09593330.2017.1304456subject
Has Abstractpub_date
2018-02-01 00:00:00pages
490-502issue
4eissn
0959-3330issn
1479-487Xjournal_volume
39pub_type
杂志文章abstract::This study presents the operation of a biotrickling filter when treating a monochlorobenzene (MCB) contaminated gaseous emission. Treatment dynamics were characterised by exposing the reactor to various MCB Organic Loads (OL). The use of different growth support materials, namely limestone, sand, ceramic and PVC pall-...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330309385699
更新日期:2003-12-01 00:00:00
abstract::The textile industry can benefit from the use of microcapsules, both adding value to products through the production of technical or functional textiles and improving the processes in the production chain. Some applications have been widely explored in academic research, but many are not feasible for use in industrial...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1393017
更新日期:2019-01-01 00:00:00
abstract::Red mud, an industrial by-product generated during the processing of bauxite ore, was investigated as an inexpensive and effective adsorbent for the adsorption of methylene blue from aqueous solution. Chemical and heat treatments were applied to the raw red mud. The effects of contact time, adsorbent amount, pH, tempe...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2010.529946
更新日期:2011-08-01 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::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::Layered double hydroxides are antitype 2/1 clay minerals that can be synthesized rapidly under laboratory conditions. Due to their high anion exchange capacities, layered double hydroxides have been investigated as potential adsorbents for removal of anionic contaminants from aqueous systems. In this study, uncalcined...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332208618178
更新日期:2001-12-01 00:00:00
abstract::We reported the preparation of NGO-Fe3O4 by simple hydrothermal-co-precipitation. The catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). It was demonstrated that norfloxacin (NOR) could be effectively degraded by the UV/NGO-Fe...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1779353
更新日期:2020-06-17 00:00:00
abstract::Micelle enhanced ultrafiltration (MEUF) is a surfactant-based membrane separation process that may be used to separate target ions from mixed metal aqueous solutions, such as leachates of coal ash and other geological wastewaters. The ability of MEUF to separate rare earth elements (REEs) was evaluated using sodium do...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1812732
更新日期:2020-09-22 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::An inter-comparison exercise was performed between two laboratories on mineralised moss samples. Ten samples, together with three certified reference materials (CRM 61, CRM 62 and CRM 482) and five blanks were mineralised independently in the two laboratories and then analysed by both with different techniques (AAS, I...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332208618201
更新日期:2001-10-01 00:00:00
abstract::The research on the Columbia River Basalt is a unique combination of projects that minimise CO2 emissions to the atmosphere. Both are underground waste disposal projects: CO2 waste versus nuclear waste. The recent Wallula CO2 project and the previous nuclear-waste project in the Columbia River Basalt (CRB), USA, provi...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1815859
更新日期:2020-09-09 00:00:00
abstract::Due to the diversified nature of municipal solid waste and the different stages of its decomposition, the formed leachates result in a complex chemical mixture with toxic potential. These chemicals can cause environmental problems, such as the contamination of surface or groundwater, thus affecting the balance of aqua...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1281352
更新日期:2017-11-01 00:00:00
abstract::A response surface methodology (RSM) involving a central composite design was applied to the modelling and optimization of a preparation of Mn/active carbon nanocatalysts in NH3-SCR of NO at 250 degrees C and the results were compared with the artificial neural network (ANN) predicted values. The catalyst preparation ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.750381
更新日期:2013-05-01 00:00:00
abstract::This study compares the operation of mesophilic and thermophilic anaerobic digestion of sewage sludge and their effects in uncontrolled phosphorus precipitation. The research has been carried out using a pilot plant consisting of two digesters of 1.6 m3 working volume, treating the mixed sludge of Alzira WWTP (Valenci...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1681522
更新日期:2019-10-29 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::Dissimilatory nitrate reduction to ammonium was examined in the bottom sediment of selected reservoirs. In vitro measurements of DNRA rates were made with undisturbed sediment cores, using an 15N stable isotope technique. 15NH4+ analysis was conducted using a C and N Elemental Analyzer, model EA 1112 (ThermoQuest) on ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332808618834
更新日期:2007-07-01 00:00:00
abstract::The three-parameter (K, b, and n) Song isotherm model was slightly modified to make it possible to obtain analytical integration of the spreading pressure integral. The modified Song model (MSM) allows more efficient and accurate calculation of the ideal adsorbed solution theory (IAST). The MSM also satisfies the Henr...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1674929
更新日期:2019-10-11 00:00:00
abstract::Morocco shelters lagoons, estuaries and bays along its paralic coasts which are among the most productive in the world. The Bay of Dakhla is the longest and the most important site in Morocco due to its halieutic richness. In fact, this bay is an ecosystem with great potential in terms of aquaculture, mainly shellfish...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330802180328
更新日期:2008-09-01 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::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::Pine bark, a low-cost industrial residue, has been suggested as a promising substitute for granular activated carbon in the on-site treatment of water contaminated with 2,4,6-trinitrotoluene (TNT). However, the complex organic structure and indigenous microbial community of pine bark have thus far not been thoroughly ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.909888
更新日期:2014-09-01 00:00:00
abstract::An anaerobic membrane bioreactor (MBR) was operated for 367 days to treat domestic wastewater originating from the Sfax wastewater treatment plant. The results showed that the MBR was not very efficient because of the considerable fluctuations in the domestic wastewater composition and the presence of toxic compounds ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330903100027
更新日期:2009-12-01 00:00:00
abstract::Over the past few decades, several technologies have been developed to recover phosphorus (P) as struvite from wastewater. Although these technologies have achieved reasonable P-removal efficiencies, these technologies are associated with several shortcomings such as high capital and operating costs, longer crystalliz...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1435734
更新日期:2019-06-01 00:00:00
abstract::The hydrodynamic behaviour of UASB (Up Flow Anaerobic Sludge Blanket) reactors based on residence time distribution curves allows the implementation of global models, including the kinetic aspects of biological reactions. The most relevant hydrodynamic models proposed in the literature are discussed and compared with ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593331003646638
更新日期:2010-05-01 00:00:00
abstract::In the present paper, the potential of the foamed emulsion bioreactor (FEBR), a novel biological reactor for air pollution control was evaluated. Experimental data obtained on a laboratory-scale prototype were used to scale-up the process for a hypothetical case consisting of a contaminated air flow rate of 10,000 m(3...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332708618675
更新日期:2006-06-01 00:00:00
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::The adsorption-desorption of copper ions and a mixture of five metal ions (cadmium, copper, nickel, lead and zinc) in aqueous solutions by a spruce sawdust column was reported. Different studies about the copper binding mechanism, the efficiency of some regenerating solutions for the copper desorption, the use of colu...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330309385584
更新日期:2003-04-01 00:00:00
abstract::ABSTRACT Glass recycling is a process that faces many obstacles, especially in the closed-loop context. Waste glass separation and transportation can become quite expensive, turning glass collection for remanufacture unfeasible. For this reason, it is important that alternative markets for waste glass are sought. This...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1775711
更新日期:2020-06-18 00:00:00
abstract::The production of extracellular protease by different Bacillus licheniformis strains (ATCC 21415, ATCC 21417 and ATCC 21424) was tested in wastewater sludge as a raw material as well as in synthetic soy medium to compare the capacity of protease production by different strains and to compare the capacity of the medium...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330903338429
更新日期:2010-01-01 00:00:00
abstract::Hexavalent chromium introduced to the water ecosystem is an important issue due to the toxic effect it poses. The first step of conventional treatment of wastewaters containing hexavalent chromium is its reduction to chromium (III) which is less toxic. The use of industrial waste material for the reduction of chromium...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332508618368
更新日期:2004-11-01 00:00:00