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Journal articles on the topic 'Biofiltros'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

Pedreira, Marcelo Mattos, Ronald Kennedy Luz, José Cláudio Epaminondas dos Santos, Edson Vieira Sampaio, and Rafael Sá Fortes Silva. "Biofiltração da água e tipos de substrato na larvicultura do pacamã." Pesquisa Agropecuária Brasileira 44, no. 5 (2009): 511–18. http://dx.doi.org/10.1590/s0100-204x2009000500011.

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O objetivo deste trabalho foi avaliar o uso de diferentes biofiltros e substratos na qualidade da água e no desempenho de larvas de Lophiosilurus alexandri. Os tratamentos usados foram: sistema sem biofiltro (SB); biofiltro interno ao tanque com substrato de cascalho de diâmetro médio de 1,6 cm (CMe); biofiltro interno ao tanque com cascalho de diâmetro médio de 2,1 cm (CMa); biofiltro interno ao tanque com substrato constituído de uma mistura de 70% de brita (diâmetro médio de 1,3 cm) e 30% de concha (diâmetro médio de 1,1 cm) (CB); e sistema fechado (SF) com biofiltro externo aos tanques, co

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2

Vicente Reyes, Jimmy. "Determinación de la eficiencia del aserrín y la fibra de coco utilizados como empaques para la remoción de contaminantes en Biofiltros para el tratamiento de aguas residuales." Enfoque UTE 7, no. 3 (2016): 41–56. http://dx.doi.org/10.29019/enfoqueute.v7n3.104.

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El agua es un recurso muy utilizado por la humanidad tanto para uso industrial y doméstico, la cual se descarga en la red de alcantarillado público o pozos sépticos. El presente proyecto propone una alternativa ecológica de tratamiento de aguas residuales domésticas llamada Biofiltro, que se construye de material vivo (lombrices) e inerte (viruta y grava). Al irrigar el agua residual en este filtro biológico se ha demostrado alta eficiencia en la remoción de materia orgánica y organismos patógenos. El trabajo de campo se llevó a cabo con Biofiltros experimentales en los que para obtener mejore

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3

Chávez, Carlos H., Z. Alejandra Mora, Jorge A. Cabra, Yesid Carmona, Sergio Revah, and Gonzalo Gnecco. "Biofiltración de Ácido Sulfhídrico (H2S), utilizando Bagazo de Caña de Azúcar y Piedra Pómez como Material de Soporte." INGENIERÍA Y COMPETITIVIDAD 5, no. 2 (2011): 7–15. http://dx.doi.org/10.25100/iyc.v5i2.2291.

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Experimentalmente se determinaron los valores de los parámetros de diseño y operación de un biofiltro para el control de las emisiones de ácido sulfhídrico (H2S) en un efluente gaseoso, utilizando como materiales de soporte bagazo de caña y piedra pómez inoculados con un consorcio microbiano capaz de degradar H2S. Se realizaron diferentes pruebas para determinar la capacidad máxima de eliminación de los soportes, así como el efecto de la concentración sobre la eficiencia de remoción. Por su efecto sobre el funcionamiento de los biofiltros también se estudió la variación de algunas propiedades

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Batista, Rafael Oliveira, Antônio Alves Soares, Delfran Batista dos Santos, Joel Medeiros Bezerra, and Adriana de Fátima Mendes Oliveira. "Remoção de sólidos suspensos e totais em biofiltros operando com esgoto doméstico primário para reuso na agricultura." Revista Ceres 60, no. 1 (2013): 7–15. http://dx.doi.org/10.1590/s0034-737x2013000100002.

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Este trabalho objetivou analisar a remoção de sólidos suspensos e totais em biofiltros, preenchidos com lixo compostado, bagaço de cana-de-açúcar e serragem de madeira, submetidos às taxas de aplicação do esgoto doméstico de 0,5, 1,0 e 1,5 m³ m-2 d-1, em Viçosa-MG. Para isso, foi montada uma bancada experimental, constituída de 27 biofiltros, em área experimental da Universidade Federal de Viçosa. As concentrações de sólidos suspensos e totais foram determinadas, mensalmente, durante período de 153 dias. O experimento foi montado no esquema de parcelas subsubdivididas, tendo, nas parcelas, as

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5

Pavanelli, Gerson, and Eduardo Cleto Pires. "Remoção de algas em um sistema de biofiltros submersos." Engenharia Sanitaria e Ambiental 24, no. 6 (2019): 1157–65. http://dx.doi.org/10.1590/s1413-41522019136913.

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RESUMO Esta pesquisa propôs o desenvolvimento de um sistema de biofiltros submersos (SBS), modificados com base na configuração de filtros de pedra, visando ao pós-tratamento do efluente de lagoas de estabilização, inicialmente para a remoção de algas. Foram implantados 2 conjuntos de biofiltros submersos para captar esgoto tratado de duas diferentes profundidades de uma lagoa de maturação - a 60 cm (em uma zona dessa lagoa chamada superficial - ZS) e a 180 cm (em outra zona dessa lagoa chamada intermediária - ZI). Foi utilizada, como recheio dos biofiltros submersos, pedra brita nº 3, nas seg

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Gutberlet, Jutta. "Uso de Sphagnum recurvum P. Beauv. como biofiltro no monitoramento de poluição aérea industrial de metais pesados." Acta Botanica Brasilica 2, no. 1 suppl 1 (1988): 103–14. http://dx.doi.org/10.1590/s0102-33061988000300010.

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O uso de bioindicadores e biofiltros, principalmente plantas inferiores, representa uma alternativa eficiente no monitoramento da qualidade ambiental. A vantagem do emprego de vegetais na avaliação da contaminação ambiental consiste no reduzido custo de instalação e no fato de poder retratar uma situação global, integrando a soma dos diferentes efeitos dos agentes contaminantes. Segundo o método "moss-bag", adaptado aos fatores regionais específicos, foram empregados saquinhos de nylon contendo o musgo Sphagnum Recurvum P. Beauv. como biofiltro dentro do estudo realizado na Serra do Mar de Cub

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7

Santillán Quiroga, Luis Miguel, Cesar Arturo Puente Guijarro, and Miguel Ángel Osorio Rivera. "Determinación de la reducción de concentración de cr+6 en muestras de agua de la curtiembre el nuevo mundo en la ciudad de Ambato utilizando la cabuya como biofiltro a diferentes longitudes." Ciencia Digital 3, no. 2.4 (2019): 73–87. http://dx.doi.org/10.33262/cienciadigital.v3i2.4.509.

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Se fue determino la reducción de concentración de Cr+6 en muestras de agua de la curtiembre “El Nuevo Mundo” ubicada en la parroquia la Península, de la ciudad de Ambato utilizando la cabuya Furcraea Andina. La investigación se llevó a cabo en el laboratorio de Análisis Técnicos de la Facultad de Ciencias – ESPOCH. Se diseñaron dos biofiltros el primero con cabuya de longitud de 0,10 m y el otro con cabuya triturada tipo aserrín añadiendo a cada uno de ellos arena, piedra pómez y carbón activado, tomando muestras aleatorias de cada uno. Se realizó la caracterización física del agua inicial y f

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8

Baltrėnas, Pranas, and Alvydas Zagorskis. "INVESTIGATION INTO THE AIR TREATMENT EFFICIENCY OF BIOFILTERS OF DIFFERENT STRUCTURES." JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT 18, no. 1 (2010): 23–31. http://dx.doi.org/10.3846/jeelm.2010.03.

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Biological air treatment devices, biofilters, of four different structures with different origin charges, composed of natural zeolite granules, foam cubes and wood chips, were used for the experimental investigation. Biological and ad‐sorptive air treatment methods are employed to clean the air from volatile organic compounds by mixing foam and zeolite with wood chips. The use of complex cleaning technologies improves the efficiency of the device and extends the useful life of a charge. The investigation showed that microorganisms predominant in the process of biocleaning could also propagate

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Higuera Infante, Sandy Katheryne. "Biofiltro con cascarilla de arroz y pasto vetiver (C. Zizanioides) para el tratamiento del efluente de la PTAR del INPEC – Yopal, Casanare, Colombia." Revista de Investigación Agraria y Ambiental 8, no. 1 (2017): 107–18. http://dx.doi.org/10.22490/21456453.1842.

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En la investigación se evaluó un biofiltro a escala laboratorio para el tratamiento del efluente de la PTAR del Inpec de Yopal, Casanare, cuya finalidad era lograr un efluente de calidad óptima para reúso del agua en riego agrícola. Se contemplaron tres fases, la primera caracterización y análisis de los parámetros microbiológicos como fisicoquímicos del efluente. La segunda fase diseño y construcción del sistema a escala laboratorio del humedal artificial, se construyó en vidrio, usando cascarilla de arroz, intercalada con grava, se sembró pasto vetiver (C. Zizanioides) y se inundó el sistema

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10

DÁVILA MARTINEZ, TATINA ANDREA, NAZLY EFREDIS SANCHEZ PEÑA, DARWIN ANDRÉS ORDOÑEZ ERAZO, JEFFERSON FABIAN MUÑOZ LÓPEZ, and RICARDO BENITEZ BENITEZ. "EVALUACIÓN DE RESIDUOS AGROINDUSTRIALES COMO BIOFILTROS: REMOCIÓN DE CR (VI) EN EFLUENTES DE CURTIEMBRES SINTÉTICOS." Biotecnoloía en el Sector Agropecuario y Agroindustrial Edición Especial, no. 1 (2017): 49. http://dx.doi.org/10.18684/bsaa(15)49-58.

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Chernicharo, Carlos Augusto de Lemos, Richard M. Stuetz, Cláudio Leite Souza, and Gilberto Caldeira Bandeira de Melo. "Contribuição para o projeto de biofiltros aplicados ao tratamento de emissões odorantes provenientes de reatores anaeróbios." Revista DAE 59, no. 186 (2011): 56–62. http://dx.doi.org/10.4322/dae.2017.001.

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Prócel, Diego, Paola Posligua, and Carlos Banchón. "Biodegradación de contaminantes orgánicos de la industria láctea." Enfoque UTE 7, no. 1 (2016): 22–32. http://dx.doi.org/10.29019/enfoqueute.v7n1.85.

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Uno de los aspectos medioambientales de alto impacto en las industrias lácteas es la descarga de aguas residuales, tanto por la materia orgánica contaminante como por la considerable generación de efluentes. En el presente estudio, se implementó la biofiltración de efluentes de una lechera en San Miguel de Nono (Ecuador) con carga contaminante de 10.000 mg/L en términos de demanda química de oxígeno y turbidez de 799 NTU. El sistema con una capacidad de 55 L por cada lote consistió de tres biofiltros en serie y clarificación asistida con zeolita activada. La degradación orgánica alcanzó porcen

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13

Campos, Fábio, Rodrigo de Freitas Bueno, Herica Tiepole Lee, and Larisa Lika Narise. "Vermifiltro: alternativa para tratamento de esgoto em sistemas descentralizados." Revista DAE 68, no. 227 (2020): 182–96. http://dx.doi.org/10.36659/dae.2020.089.

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Com o avanço nas pesquisas na área do Ecossaneamento, novos processos de tratamento começam a se mostrar promissores. Nesse sentido, o presente trabalho teve por objetivo avaliar o sistema de Vermifiltro; tal processo baseia-se no uso de reatores atuando como biofiltros aeróbios abrigando como material de enchimento substrato e uma população de minhocas detritívoras. Para este estudo foi construído e operado um sistema de vermifiltro seguido de dois leitos filtrantes: um contendo argila expandida, e outro, fibra de coco. Obtiveram-se resultados satisfatórios para remoção de sólidos em suspensã

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Garcia, Jesús Villalobos, Claire Vialle, Caroline Sablayrolles, et al. "Étude de la performance du milieu filtrant constitué d’une couche de chènevotte sur une couche de grignons d'olives dans le traitement des eaux usées domestiques : du pilote à l’échelle industrielle." Revue des sciences de l’eau 32, no. 1 (2019): 1–10. http://dx.doi.org/10.7202/1059876ar.

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Résumé Deux matériaux, sous-produits agro-industriels, ont été étudiés en biofiltration à l'échelle pilote : la chènevotte en tant que « couche active », sur des grignons d'olives en tant que « couche de support ». L'objectif était d'étudier la capacité de ces deux matériaux travaillant ensemble comme un seul milieu filtrant poreux. L'impact de la hauteur de la couche active sur la performance du biofiltre a été étudié expérimentalement grâce à deux biofiltres, un premier présentant une répartition des matériaux en deux hauteurs égales, l’autre avec 80 % de couche active sur 20 % de hauteur de

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Søberg, Laila C., Maria Viklander, and Godecke-Tobias Blecken. "The influence of temperature and salt on metal and sediment removal in stormwater biofilters." Water Science and Technology 69, no. 11 (2014): 2295–304. http://dx.doi.org/10.2166/wst.2014.161.

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Stormwater biofilters are used to treat stormwater runoff. In countries with cold winter climates, biofilters are subject to low temperatures which, in some cases, are combined with potentially high salt concentrations from road de-icing, potentially affecting the biofilter's performance. Since stormwater biofilters have been developed without consideration of their critical winter use, a laboratory study was carried out to evaluate the performance of stormwater biofilters subjected to low and high temperatures, with and without salt. Both factors and their interaction had a significant effect

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Amiel, Christophe, Sylvie Gillot, Michel Roustan, and Alain Héduit. "Vers une méthode de mesure du transfert d'oxygène en biofiltres." Water Quality Research Journal 37, no. 4 (2002): 729–43. http://dx.doi.org/10.2166/wqrj.2002.049.

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Abstract L'objectif du travail présenté était d'une part de préciser les conditions d'adaptation aux biofiltres des méthodes de mesure “usuelles” en eau claire du transfert d'oxygène, d'autre part, de déterminer si l'addition de cobalt pouvait être évitée pour ralentir l'oxydation du sulfite. Trois méthodes de mesure ont été mises en oeuvre en eau claire et comparées sur colonne à bulles et en pilote biofiltre : la méthode de réoxygénation, la méthode des bilans gazeux et la méthode du dosage du sulfite. Les essais réalisés à différents débits d'air en présence d'une forte concentration en sul

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Gilbert, Yan, Yann Le Bihan, Gerardo Buelna, and Paul Lessard. "Application de la respirométrie pour le suivi de l'activité de la biomasse d'un biofiltre sur lit organique traitant du lisier de porc." Water Quality Research Journal 40, no. 2 (2005): 155–63. http://dx.doi.org/10.2166/wqrj.2005.018.

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Abstract L'opération de systèmes de biofiltration à support organique nécessite le développement de méthodes de suivi simples et rapides La respirométrie de type LSS a donc été adaptée afin d'évaluer l'activité potentielle des organismes hétérotrophes présents dans le biofiltre. Des essais respirométriques ont été réalisés à différentes concentrations de milieu filtrant afin d'adapter la méthode à cette biomasse, fixée sur le support. Des colonnes de biofiltration de laboratoire ont été montées et alimentées à des charges hydrauliques et massiques variables et à des durées de fonctionnement di

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Ribeiro, Steve Angstrom dos Santos, Alana Lopes Junho, Regina Mambeli Barros, et al. "Estudo preliminar da biodigestão de esterco bovino com soro de leite em sistema de digestão em duplo estágio com purificação de biogás." Research, Society and Development 9, no. 8 (2020): e646985911. http://dx.doi.org/10.33448/rsd-v9i8.5911.

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Esse trabalho tem como objetivo analisar a geração de biogás a partir da digestão anaeróbia em duas etapas em três bateladas. O trabalho visou ao estudo comparativo da digestão anaeróbia de dejeto bovino (primeira batelada) com o a codigestão de dejeto bovino com soro de leite diluído no soro de leite na proporção soro de leite:dejeto de bovino 15:60 (L:L) na segunda batelada e 5:60 (L:L) na terceira batelada, tendo sido em ambas, completado o restante com água. O biogás gerado permitiu o funcionamento de um motor de combustão interna. O digestor anaeróbio em duas etapas foi projetado para rec

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Zagorskis, Alvydas, and Renata Spiečiūtė. "RESEARCH ON THE AERODYNAMIC RESISTANCE OF TRICKLE BIOFILTER / LAŠELINIO BIOFILTRO AERODINAMINIO PASIPRIEŠINIMO TYRIMAI." Mokslas - Lietuvos ateitis 3, no. 5 (2011): 64–69. http://dx.doi.org/10.3846/mla.2011.088.

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A four – section trickle biofilter was constructed for experimental research. The filter was filled with the packing material of artificial origin. The material consists of plastic balls having a large surface area. The dependence of biofilter aerodynamic resistance on supply air flow rate and the number of filter sections was determined. The aerodynamic resistance of the biofilter was measured in two cases. In the first case, the packing material of the filter was dry, whereas in the second case it was wet. The experimental research determined that an increase in the air flow rate from 0.043

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Bacevičius, Denas, and Alvydas Zagorskis. "INVESTIGATION OF EFFICIENCY OF AIR CLEANING FROM ACETONE USING A SEGMENTAL CONSTRUCTION BIOFILTER / ACETONO VALYMO IŠ ORO EFEKTYVUMO TYRIMAI, TAIKANT SEGMENTINĖS KONSTRUKCIJOS BIOFILTRĄ." Mokslas – Lietuvos ateitis 7, no. 4 (2015): 380–84. http://dx.doi.org/10.3846/mla.2015.813.

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Volatile organic compounds, e. g. acetone, have a direct impact on climate change, decrease of ozone in the air, and on the growth of greenhouse effect. One of the most popular air purifying methods from VOC is a biological air cleaning. Experimental investigations were conducted to determine the efficiency of the new structure of biofilter with polypropylene plates segments. During the investigations the efficiency of segmental construction biofilter of air purification at different initial concentrations of pollutants was determined. Different concentrations of pollutants were estimated duri

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Le Bihan, Yann, Paul Lessard, and Marc C. Lavoie. "Étude préliminaire sur l’utilisation d’essais biochimiques pour le suivi opérationnel d’une unité de biofiltration." Water Quality Research Journal 31, no. 2 (1996): 241–62. http://dx.doi.org/10.2166/wqrj.1996.015.

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Abstract L’applicabilité de tests biochimiques a été évaluée pour une éventuelle utilisation dans le cadre du suivi d’un procédé par biofiltration. Les eaux de lavage, issues de biofiltres d’une usine de la Communauté urbaine de Québec, ont été échantillonnées puis analysées pour certains tests biochimiques (déshydrogé-nase, adénosine triphosphate et hydrolases) et caractétistiques physico-chimiques. Les résultats obtenus montrent que les déshydrogénases et hydrolases pourraient servir comme outil de suivi et d’opération d’un biofiltre; ce qui ne semble pas le cas pour l’adénosine triphosphate

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Wierzbińska, Monika, and Witold Modzelewski. "THE USE OF BIOFILTERS FOR DEODORISATION OF THE NOXIOUS GASES." Inżynieria Ekologiczna 41 (2015): 125–32. http://dx.doi.org/10.12912/23920629/1836.

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Zagorskis, Alvydas, and Aleksandra Milaknytė. "EXPERIMENTAL REEARCH ON APPLYING LAVSAN IN THE AIR BIOFILTRATION PROCESS / LAVSANO TAIKYMO ORO BIOFILTRACIJOS PROCESE EKSPERIMENTINIAI TYRIMAI." Mokslas - Lietuvos ateitis 5, no. 4 (2013): 376–81. http://dx.doi.org/10.3846/mla.2013.60.

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Air cleaning efficiency tests on placing material load into the lavsan biofilter were carried out. Testing included butanol vapour-contaminated air stream pulled during the boot. The studies were conducted by the Department of Environmental Protection at VGTU that developed a biofilter – an experimental biological air cleaning device. Measurements were done using 60 l/min and 90 l/min air volume aspirators under the initial pollutant concentration making 180, 305, 350, 440 and 545 mg/m3. Before measuring the concentrations of butanol lavsan cartridge, loading was periodically irrigated with nu

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van Groenestijn, J. W., W. N. M. van Heiningen, and N. J. R. Kraakman. "Biofilters based on the action of fungi." Water Science and Technology 44, no. 9 (2001): 227–32. http://dx.doi.org/10.2166/wst.2001.0546.

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Traditional biofilters for waste gas treatment are mainly based on the degradation activity of bacteria. The application of fungi in biofilters has several advantages: fungi are more resistant to acidification and drying out, and the aerial mycelia of fungi form a larger surface area in the gas phase than bacterial biofilms, which may facilitate the uptake of hydrophobic volatile compounds. The research described here identifies important conditions for the operation of fungal-based biofilters. Biofilters with perlite packing were operated at different pHs and relative inlet gas humidities. To

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Baltrėnas, Pranas, та Alvydas Zagorskis. "INVESTIGATION OF CLEANING EFFICIENCY OF BIOLOGICAL AIR‐TREATMENT DEVICE WITH ACTIVATED CHARGE OF DIFFERENT ORIGIN/BIOLOGINIO ORO VALYMO ĮRENGINIO SU AKTYVINTA SKIRTINGOS KILMĖS ĮKROVA VALYMO EFEKTYVUMO TYRIMAI/ ИССЛЕДОВАНИЕ ЭФФЕКТИВНОСТИ УСТАНОВКИ ДЛЯ БИОЛОГИЧЕСКОЙ ОЧИСТКИ ВОЗДУХА С АКТИВИРОВАННОЙ ЗАГРУЗКОЙ РАЗЛИЧНОГО ПРОИСХОЖДЕНИЯ". JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT 16, № 3 (2008): 113–20. http://dx.doi.org/10.3846/1648-6897.2008.16.113-120.

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In order to carry out an experimental investigation a biological air‐treatment device was used, namely, a biofilter with a charge of a different origin composed of zeolite, foam and wood chips. When mixing foam and zeolite together with wood chips for air treatment from volatile organic compounds, not only a biological but also adsorptive air‐treatment method is used. Using complex treatment technologies the device efficiency and the charge service period are improved. The investigation has shown that microorganisms, being predominant in the bio‐treatment process, can breed in charges of on in

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Zigmontienė, Aušra, та Lukas Žarnauskas. "INVESTIGATION AND ANALYSIS OF AIR-CLEANING BIOFILTER HYBRID BIOCHARGE QUANTITATIVE AND QUALITATIVE PARAMETERS / ORO VALYMO BIOFILTRO MIŠRIOS ĮKROVOS KIEKYBINIŲ IR KOKYBINIŲ MIKROBIOLOGINIŲ PARAMETRŲ TYRIMAI / ИССЛЕДОВАНИЕ КОЛИЧЕСТВЕННЫХ ИК А ЧЕСТВЕННЫХ МИКРОБИОЛОГИЧЕСКИХ ПАРАМЕТРОВВОЗДУХООЧИСТНОГО БИОФИЛЬТРА ПРИ СМЕШАННОЙ ЗАГРУЗКЕ". Journal of Environmental Engineering and Landscape Management 19, № 1 (2011): 81–88. http://dx.doi.org/10.3846/16486897.2011.557472.

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Investigation of microorganism quantitative and qualitative parameters in the hybrid load of the biofilter allows improving the parameters of one of the most effective and cheapest air cleaning technologies of volatile organic compounds (VOCs)—biofiltration process. The point of biofiltering is the partitioning of volatile organic compounds during the metabolism of microorganisms. In pursuance to assure the best conditions for their growth, the biofilter is loaded with biocharge mixture made of zeolite, foam and wood shavings. The device is filled with VOCs mixture consisting of: acetone of ke

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Gichana, Zipporah, David Liti, Silke-Silvia Drexler, et al. "Effects of aerated and non-aerated biofilters on effluent water treatment from a small-scale recirculating aquaculture system for Nile tilapia (Oreochromis niloticus L.)." Die Bodenkultur: Journal of Land Management, Food and Environment 70, no. 4 (2020): 209–19. http://dx.doi.org/10.2478/boku-2019-0019.

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Summary Most recirculation aquaculture systems (RAS) use aerated biofilters to maintain suitable water quality for fish production. However, application of non-aerated biofilters may provide opportunities to lower aeration costs, water usage and concentration of all nitrogenous wastes in the effluent water. Our study aimed at comparing the biofiltration performance characteristics of two biofilters: a conventional aerated biofilter and a non-aerated biofilter receiving the same effluent water from a small-scale RAS. The two biofilters were evaluated in triplicate and tested concurrently for se

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Boller, Markus, Daniel Kobler, and Gerhard Koch. "Particle separation, solids budgets and headloss development in different biofilters." Water Science and Technology 36, no. 4 (1997): 239–47. http://dx.doi.org/10.2166/wst.1997.0129.

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Biofilters for secondary treatment, tertiary nitrification and tertiary denitrification were investigated with regard to solids and gas accumulation. Biomass growth, solids capture by filtration and gas entrapment were quantified for the three different applications. In biofilters for COD-removal or denitrification heterotrophic growth dominates solids accumulation. In tertiary nitrifying biofilters the biomass remaining attached to the media after backwash and suspended solids deposits are the main fractions responsible for filter clogging. Depth profiles of solids accumulation indicate that

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Gogina, Elena, and Olga Yantsen. "Modeling of processes of wastewater treatment from nitrogen compounds in the trickling biofilter." MATEC Web of Conferences 251 (2018): 03041. http://dx.doi.org/10.1051/matecconf/201825103041.

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At least 70% of WWTP of small capacity in Russia include biofilters, that's why development of new technologies for treatment and methods of reconstruction are the points of great interest This abstract describes the methods and techniques of biofilters reconstruction to achieve desired water quality. The presence of biogenic compounds (NH4, PO4) in the water body are one of the causes of eutrophication. The article considers the methodology of modeling processes of wastewater treatment in the biofilters: The results of sanitary - chemical researches and researches of the formed biomass are gi

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Yan, Weiwei, Xingli Liu, Jie Wu, Yikun Wei, and Peng Xu. "Numerical simulation on the reduction of flow heterogeneity in the biofilter media." International Journal of Modern Physics C 27, no. 08 (2016): 1650086. http://dx.doi.org/10.1142/s0129183116500868.

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The biofilters are the ideal solutions for the biological treatment of air pollutants. However, there exists strong flow heterogeneity in porous media that degrades the removal efficiency of biofilters. Thus, the effects of Darcy number, Reynolds number and porosity of porous media on the reduction of flow heterogeneity in three biofilter models were numerically studied by the lattice Boltzmann method. The simulation results lead to three conclusions: (1) The Darcy number has dominant influence on the flow heterogeneity in the biofilters. The reduction of flow heterogeneity can be realized by

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Aguirre-Sierra, A., T. Bacchetti-De Gregoris, A. Berná, J. J. Salas, C. Aragón, and A. Esteve-Núñez. "Microbial electrochemical systems outperform fixed-bed biofilters in cleaning up urban wastewater." Environmental Science: Water Research & Technology 2, no. 6 (2016): 984–93. http://dx.doi.org/10.1039/c6ew00172f.

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Luo, J. "A pilot-scale study on biofilters for controlling animal rendering process odours." Water Science and Technology 44, no. 9 (2001): 277–85. http://dx.doi.org/10.2166/wst.2001.0558.

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Heating of animal tissue during the process of rendering liberates a variety of odorous compounds. The performance of biofiltration in removing these odours was investigated using pilot-scale biofilters containing different media (sand, finely and coarsely crushed wood bark, and bark/soil mixture). Odour-removal performance of the biofilters was determined using olfactometry. Biofilter odour removal efficiencies of between 29.7% and 99.9% were measured at influent odour concentrations of between 143,100 and 890,000 odour units m−3, and various air loading rates (0.074-0.592 m−3 air m−3 medium

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Afrooz, A. R. M. Nabiul, Ana K. Pitol, Dianna Kitt, and Alexandria B. Boehm. "Role of microbial cell properties on bacterial pathogen and coliphage removal in biochar-modified stormwater biofilters." Environmental Science: Water Research & Technology 4, no. 12 (2018): 2160–69. http://dx.doi.org/10.1039/c8ew00297e.

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Bacterial pathogens and pathogen indicators suspended in stormwater are removed to a greater extent in biochar-augmented sand biofilters than sand biofilters; the processes governing the removal are distinct.

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Moe, W. M., and R. L. Irvine. "Intracellular dynamics of ribonucleic acid (RNA) and protein in microorganisms from periodically operated biofilters." Water Science and Technology 43, no. 3 (2001): 241–48. http://dx.doi.org/10.2166/wst.2001.0143.

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Conventional biofilters are designed and operated as continuous flow processes where the reactors receive a constant stream of contaminated air. Recent research has shown that periodically operated biofilters can remove a greater mass of contaminants during shock loads than equally sized continuously loaded biofilters. Preliminary experiments were conducted to investigate effects of periodic operation on physiological state of biofilter microorganisms. Relative concentrations of two macromolecular components of microbial cells, RNA and protein, were quantified in biosolids samples removed from

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Bohn, Hinrich L., and Karl H. Bohn. "Moisture in biofilters." Environmental Progress 18, no. 3 (1999): 156–61. http://dx.doi.org/10.1002/ep.670180311.

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GONZÁLEZ VÁZQUEZ, B., J. M. CHOUBERT, E. PAUL, and J. P. CANLER. "Comment éviter le colmatage irréversible des installations de biofiltration ?" Techniques Sciences Méthodes, no. 11 (November 20, 2020): 71–86. http://dx.doi.org/10.36904/tsm/202011071.

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La biofiltration est une technologie compacte et efficace pour le traitement des effluents urbains. Certaines installations sont régulièrement touchées par un colmatage irréversible, nécessitant une opération curative pour retrouver sa capacité de traitement. Une première enquête menée en 2007 avait évalué l’ampleur du colmatage des biofiltres, et sensibilisé exploitants et concepteurs au phénomène. En 2018, une seconde enquête a réévalué l’ampleur du colmatage des biofiltres, a approfondi les causes et les moyens de détection de ce phénomène. Nous avons consulté les 128 biofiltres existants s

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Søborg, D. A., I. L. Breda, and L. Ramsay. "Effect of oxygen deprivation on treatment processes in a full-scale drinking water biofilter." Water Supply 15, no. 4 (2015): 825–33. http://dx.doi.org/10.2166/ws.2015.040.

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Dissolved oxygen is critical for proper operation of waterworks that utilize anaerobic groundwater and rely on biofilters to remove iron, manganese and ammonium. In these biofilters, planned or inadvertent oxygen deprivation may occur for a variety of reasons. The water quality effects of oxygen deprivation on the function of drinking water biofilters, however, have not previously been reported. In this study, a 5-day oxygen deprivation period in full-scale biofilters was found to affect iron, manganese and ammonium concentrations differently. During the oxygen deprivation period, iron continu

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Menanteau-Ledouble, Simon, Rui A. Gonçalves, and Mansour El-Matbouli. "Feed Supplementation with a Commercially Available Probiotic Solution Does Not Alter the Composition of the Microbiome in the Biofilters of Recirculating Aquaculture Systems." Pathogens 9, no. 10 (2020): 830. http://dx.doi.org/10.3390/pathogens9100830.

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Recirculating aquaculture relies on the treatment of ammonia compounds from the water by a bacterial flora growing inside biofilters. Another increasingly common practice in aquaculture is the supplementation of feed with live probiotic bacteria to boost the immune system of the farmed animals and hinder the implantation of pathogenic bacteria. In the present study, we investigated the bacterial flora within the biofilters of recirculating farming units in which African catfish (Clarias gariepinus) were being farmed. Our results suggested that these two farming systems could be compatible as f

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Wahman, David G., Mary Jo Kirisits, Lynn E. Katz, and Gerald E. Speitel. "Ammonia-Oxidizing Bacteria in Biofilters Removing Trihalomethanes Are Related toNitrosomonas oligotropha." Applied and Environmental Microbiology 77, no. 7 (2011): 2537–40. http://dx.doi.org/10.1128/aem.02464-10.

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ABSTRACTAmmonia-oxidizing bacteria (AOB) in nitrifying biofilters degrading four regulated trihalomethanes—trichloromethane, bromodichloromethane, dibromochloromethane, and tribromomethane—were related toNitrosomonas oligotropha. N. oligotrophais associated with chloraminated drinking water systems, and its presence in the biofilters might indicate that trihalomethane tolerance is another reason that this bacterium is dominant in chloraminated systems.

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Shi, Shun, and Wendong Tao. "Numerical modeling of nitrogen removal processes in biofilters with simultaneous nitritation and anammox." Water Science and Technology 67, no. 3 (2013): 549–56. http://dx.doi.org/10.2166/wst.2012.594.

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This study developed a simple numerical model for nitrogen removal in biofilters, which was designed to enhance simultaneous nitritation and anaerobic ammonium oxidation (anammox). It is the first attempt to simulate anammox together with two-step nitrification in natural treatment systems, which may have different kinetic parameters and temperature effects from conventional bioreactors. Prediction accuracy was improved by adjusting kinetic coefficients over the startup period of the biofilters. The maximum rates of nitritation and nitrite oxidation increased linearly over time during the star

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Tao, Wendong, Jianfeng Wen, and Christopher Norton. "Laboratory study on factors influencing nitrogen removal in marble chip biofilters incorporating nitritation and anammox." Water Science and Technology 64, no. 6 (2011): 1211–17. http://dx.doi.org/10.2166/wst.2011.679.

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It remains challenging to integrate nitritation and anammox in ecologically engineered treatment systems such as passive biofilters that are packed with natural materials and have low energy inputs. This study explored the factors influencing nitritation-anammox through parallel operation of two laboratory-scale biofilters packed with large and small marble chips respectively. Clean marble chips (mainly CaCO3) had an alkalinity dissolution rate of 130 mg CaCO3/kg marble d when water pH approached 6.5. Marble chips effectively increased water pH and provided sufficient alkalinity to support nit

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Tschui, M., M. Boller, W. Gujer, J. Eugster, C. Mäder, and C. Stengel. "Tertiary nitrification in aerated pilot biofilters." Water Science and Technology 29, no. 10-11 (1994): 53–60. http://dx.doi.org/10.2166/wst.1994.0745.

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Three different types of internally aerated pilot scale biofilters were operated as tertiary nitrification systems. Long-term performance of the three aerated biofilters was tested under various operating conditions. The maximum volumetric nitrification rates under non NH4-limiting conditions for the three aerated biofilter systems were investigated. Based on measured temperature dependencies, an exponential relationship was established enabling the prediction of the nitrification rates at desired temperatures. Based on a temperature of 10°C, the results allow a comparison between the surface

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Kleiber, B., G. Roudon, B. Bigot, and J. Sibony. "Assessment of aerated biofiltration at industrial scale." Water Science and Technology 29, no. 10-11 (1994): 197–208. http://dx.doi.org/10.2166/wst.1994.0762.

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Experience with biofilters, acquired over many years, has made it possible to control their operating parameters. The goal of this article is to present an assessment of operational biofilters, in particular their air consumptions, their sludge productions, their energy balances as well as the duration of their filtration cycles. Some tests, carried out on medium to large full scale units, are described at the same time as the process results. These experiences in the design and operation of biofilters led to their optimization and make it possible to build very large scale installations. Exam

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Zarook, S. M., A. A. Shaikh, and S. M. Azam. "Axial dispersion in biofilters." Biochemical Engineering Journal 1, no. 1 (1998): 77–84. http://dx.doi.org/10.1016/s1369-703x(97)00012-0.

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45

Jacob, J., H. Pingaud, J. M. Le Lann, S. Bourrel, J. P. Babary, and B. Capdeville. "Dynamic simulation of biofilters." Simulation Practice and Theory 4, no. 5 (1996): 335–48. http://dx.doi.org/10.1016/0928-4869(95)00050-x.

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Abeysinghe, D. H., A. Shanableh, and B. Rigden. "Biofilters for water reuse in aquaculture." Water Science and Technology 34, no. 11 (1996): 253–60. http://dx.doi.org/10.2166/wst.1996.0287.

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Aquaculture is a rapidly expanding industry in Australia and around the world. The majority of aquaculture operations employ flow through systems whereby residual feed and metabolic products are discharged to a nearby water body. In many countries, the discharge of nutrients rich aquaculture waters has contributed to the degradation of water quality in receiving water bodies. Aquaculture's dependency on water resources ultimately makes water recycling an attractive waste management option. Submerged flow biofilters, utilising a filter media with specific surface area of approximately 141m2/m3,

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Basu, O. D., and P. M. Huck. "Removal of humic acid by biofiltration." Water Supply 4, no. 4 (2004): 147–54. http://dx.doi.org/10.2166/ws.2004.0072.

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Biofiltration was found to be a possible process for humic acid removal once filters had been acclimated to a synthetic feedwater for 12–16 months. The biofilters were exposed to a synthetic feedwater with influent TOC concentrations ranging from 1.6–4.5 mg L‒1 and a composition of 65% humic acid, 15% formate, 10% acetate and 10% formaldehyde on a carbon mass basis. TOC removals improved from 19 ± 13% (n = 15) to 49 ± 10% (n = 20) in one biofilter and from −11 ± 25% (15) to 51 ± 7% (n = 20) in another biofilter. These increases were found to be statistically significant at the 5% level. The in

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Mielcarek, Artur, Kamila Ostrowska, Joanna Rodziewicz, Wojciech Janczukowicz, and Joanna Struk-Sokołowska. "Influence of temperature and C/N ratio on nitrifying and denitrifying bacteria of biofilters treating wastewater from de-icing airport runways." E3S Web of Conferences 116 (2019): 00050. http://dx.doi.org/10.1051/e3sconf/201911600050.

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One of the key elements in the operational management of airports is effective de-icing of surfaces. The run-off of precipitation water loaded with pollutants from de-icing is a considerable and costly problem. The aim of our research has been to evaluate the applicability of biofilters filled with light expanded clay aggregate (LECA) generated from incineration of sewage sludge and now serving as a matrix for the development of microorganisms. The tested biofilters treated precipitation water polluted with agents used to de-ice airports. The solution was tested on a laboratory scale, in a ran

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Tal, Yossi, Joy E. M. Watts, and Harold J. Schreier. "Anaerobic Ammonium-Oxidizing (Anammox) Bacteria and Associated Activity in Fixed-Film Biofilters of a Marine Recirculating Aquaculture System." Applied and Environmental Microbiology 72, no. 4 (2006): 2896–904. http://dx.doi.org/10.1128/aem.72.4.2896-2904.2006.

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ABSTRACT Microbial communities in the biological filter and waste sludge compartments of a marine recirculating aquaculture system were examined to determine the presence and activity of anaerobic ammonium-oxidizing (anammox) bacteria. Community DNA was extracted from aerobic and anaerobic fixed-film biofilters and the anaerobic sludge waste collection tank and was analyzed by amplifying 16S rRNA genes by PCR using anammox-selective and universal GC-clamped primers. Separation of amplified PCR products by denaturing gradient gel electrophoresis and sequencing of the different phylotypes reveal

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Suryaningrum, Th Dwi, Singgih Wibowo, Sri Amini, and Bagus Sediadi Bandol Utomo. "PENGEMBANGAN SISTEM BIOFILTRASI UNTUK MEMPERTAHANKAN MUTU AIR PADA PENAMPUNGAN LOBSTER HIJAU PASIR (Panulirus humarus) HIDUP DENGAN RAK BERTINGKAT." Jurnal Penelitian Perikanan Indonesia 7, no. 4 (2017): 62. http://dx.doi.org/10.15578/jppi.7.4.2001.62-73.

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Penelitian rancang bangun penampungan lobster dengan menggunakan bak serat kaca bertingkat yang dilengkapi dengan sistem biofiltrasi untuk mempertahankan mutu air pada penampungan lobster hijau pasir (Panulirus humarus) telah dilakukan. Sistem biofiltrasi disusun dengan menggunakan dua macam bahan, yaitu pasir dalam bak tersendiri dan koral dalam bak bersekat, kemudian diinokulasi dengan lumpur tambak dan dibiarkan selama dua minggu. Airhasil filtrasi digunakan untuk penampungan dan pembugaran lobster.

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