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Dissertations / Theses on the topic 'Soluble microbial products'

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Published: 4 June 2021
Last updated: 24 July 2025

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1

Aquino, Sérgio Francisco de. "Formation of soluble microbial products (SMP) in anaerobic reactors during stress conditions." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405566.

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2

Murthy, Sudhir N. "Bioflocculation: Implications for Activated Sludge Properties and Wastewater Treatment." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30647.

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Studies were conducted to determine the role of bioflocculation in the activated sludge unit processes. Laboratory and full-scale studies revealed that bioflocculation is important in determining settling, dewatering, effluent and digested sludge properties (activated sludge properties) and may be vital to the function of all processes related to the above properties. In these studies, it was shown that divalent cations such as calcium and magnesium improved activated sludge properties, whereas monovalent cations such as sodium, potassium and ammonium ions were detrimental to these properties
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3

Robles, Martínez Ángel. "Modelling, simulation and control of the filtration process in a submerged anaerobic membrane bioreactor treating urban wastewater." Doctoral thesis, Editorial Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/34102.

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El reactor anaerobio de membranas sumergidas (SAnMBR) está considerado como tecnología candidata para mejorar la sostenibilidad en el sector de la depuración de aguas residuales, ampliando la aplicabilidad de la biotecnología anaerobia al tratamiento de aguas residuales de baja carga (v.g. agua residual urbana) o a condiciones medioambientales extremas (v.g. bajas temperaturas de operación). Esta tecnología alternativa de tratamiento de aguas residuales es más sostenible que las tecnologías aerobias actuales ya que el agua residual se transforma en una fuente renovable de energía y
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4

Lee, Chou-Ken, and 李宙耕. "Characteristics of Soluble Microbial Products in Activated Sludge." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/40894239441785583346.

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碩士<br>朝陽科技大學<br>環境工程與管理系碩士班<br>93<br>Biological wastewater treatment processes employed various microorganisms with their metabolism to reduce and degrade the organic substances and nutrients in wastewater. Some persistent chemical compounds could be processed by cometabolism. It is quite difficult to remove the residual COD in the effluent which included soluble microbial products (SMPs). The productions and characteristics of the SMPs were functions of the microbial species, growth environment, rate of substrate utilization, temperature, pH and oxidation/reduction potential, etc. The substan
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5

Lin, Tung-Liang, and 林棟樑. "Characteristics of Soluble Microbial Products in Activated Sludge." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/s5a9u8.

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碩士<br>朝陽科技大學<br>環境工程與管理系碩士班<br>94<br>Biological wastewater treatment processes employed various microorganisms to reduce and degrade organic substances in wastewater. However, it was difficult to remove the residual organics in the effluent, which usually included the soluble microbial products (SMPs). Therefore, the SMPs were essential not only for meeting the standard of effluent but also for improving potential of wastewater reuse. In this study, the activated sludge was acclimated in a sequencing batch reactor (SBR), which operated at different SRT condition. The acclimated sludge was u
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6

Kuo, Chin-Sheng, and 郭謹陞. "Effect of Soluble Microbial Products Hydrophobicity on Membrane Fouling." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/52575062981375634328.

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碩士<br>國立臺灣大學<br>環境工程學研究所<br>99<br>Biological treatment systems with different sludge retention time (SRT), fixed carrier biological system (FCBS) and activated sludge process (ASP) were studied. Membrane permeate flux fluctuation was constantly monitored. The effect of soluble microbial products (SMP) hydrophobicity on membrane fouling was investigated with the use of DAX-8 resin to isolate hydrophilic and hydrophobic compounds in water samples, with total organic compound (TOC), carbohydrate and protein were taken as quantitative parameters for hydrophobicity analyze. Two different membrane
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7

Chen, Yi-min, and 陳依旻. "Characteristics and effects of soluble microbial products in membrane bioreactors." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/97562478831002072721.

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碩士<br>國立中央大學<br>環境工程研究所<br>100<br>The purpose of this study was to investigate the characteristics and effects of soluble microbial products (SMP) produced from pre-treatment processes and membrane bioreactors for treating different types of wastewater, including TFT-LCD industry wastewater(TFT-LCD), domestic wastewater(DW), and wool processing industry wastewater(WPI). The samples were analysed with water quality and the composition of SMP for raw wastewater, the influent of MBR, the inside of MBR and the effluent of MBR. After that, the effluent of MBR was filtrated by UF membrane to observe
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8

"Formation of soluble microbial products (SMP) in anaerobic reactors during stress conditions." Tese, Biblioteca Digital de Teses e Dissertações do IBICT, 2004. http://tede.ibict.br/tde_busca/arquivo.php?codArquivo=223.

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9

Tsai, Bor Nein, and 蔡博年. "Characteristics, Coagulation and Filtration of Soluble Microbial Products and Extracellular Polymeric Substances." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/48063959260932857614.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>95<br>The dissolved organic matters (DOM) in the soluble microbial products (SMP), loosely bound extracellular polymeric substances (LBEPS), and tightly bound extracellular polymeric substances (TBEPS) extracted from a wastewater sludge were fractionated using size exclusion chromatography, and were characterized by ultraviolet absorbance at 230, 254, and 280 nm, the dissolved organic carbon (DOC) contents, and the excitation-emission-matrix (EEM) spectra. The DOM of molecular weight (MW) > 20000 Da accounted for 33% for SMP, which incorporated proteins of high arom
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10

Chien, Chu-yu, and 簡筑伃. "Effects of operational factors on trentment efficiency and soluble microbial products in Membrane." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/38501127128811826314.

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碩士<br>國立中央大學<br>環境工程研究所<br>101<br>The objectives of this study were to investigate the treatment efficiency of synthetic wastewater by membrane bioreactor (MBR) and to elucidate the characteristics of soluble microbial products (SMP) at different operation parameters, including sludge retention time (SRT) 10, 20 and 40 days and influent COD concentration 300, 600 and 900 mg/L. The results showed that the optimum treatment efficiency was occurred at operation parameter SRT 20 days. On the characteristic effect of SMP, the major component of SMP was carbohydrate and the most utilization subs
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11

Luo, Shih-Bin, and 羅時斌. "Effects of soluble microbial products on biological phosphorus removal systems operated under different SRTs." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/45503153834070332877.

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碩士<br>雲林科技大學<br>環境與安全工程系碩士班<br>96<br>Soluble microbial products (SMPs) has been widely recognized to be produced by microorganisms in activated sludge during the removal of organic pollutants. SMPs contain a variety of organic matter, which were produced directly from substrate metabolism or biomass decay. Many past researches showed that the majority of the effluent soluble organics was actually SMPs. In addition, SMPs have been found to exhibit certain characteristics, such as toxicity and metal chelating properties, which affect metabolic activities of microorganisms both in treatment syste
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12

Ng, Kok-Kwang, and 黃國權. "Reduce Membrane Fouling in a Novel Bio-Entrapped Membrane Reactor: Impact of Soluble Microbial Products." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/56047751126666768959.

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博士<br>國立臺灣大學<br>環境工程學研究所<br>100<br>Membrane bioreactors (MBRs) have been widely adopted for secondary treatment of municipal wastewater in the past decade, especially in developed countries. However, a major issue of MBRs is the rapid decline of permeate flux due to a high level of biomass in the reactor that accelerates membrane fouling. High sludge concentration and extracellular polymeric substances (EPS) or soluble microbial products (SMP) have been determined to be the major factors affecting membrane bioreactor operation. Therefore, the development of a novel biological reactor that cont
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13

Li, wei-kuo, and 李唯果. "The effect of Soluble Microbial Products(SMP) on the release of Cadmium in contaminated soil." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/74810882415869311718.

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碩士<br>國立屏東技術學院<br>環境工程技術研究所<br>84<br>ABSTRACT Due to heavy economic activities in Taiwan, many illegal discharges of industrial wastes caused the contamination of agricultural land.Thus,development of an economic, efficient, and effective technology to remedy the contaminated soil is very important. Many evidence indicated that Soluble Microbial Products (SMP) were released during microbial activities.The concentration and characteristics of the SMP are functions of the microbial spe
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14

Wu, Jheng-Hong, and 吳政鴻. "Production of soluble microbial products and their impact on biological phosphorus removal systems operated under different environmental stress conditions." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/51365650993347998156.

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碩士<br>雲林科技大學<br>環境與安全工程系碩士班<br>97<br>Microorganisms in biological treatment system biodegrades organic material and also generates soluble microbial products (SMPs). SMPs may be produced directly from substrate metabolism or from biomass decay. SMPs contain a variety of organic matter and their biodegradability is poor than influent substrates. The past researches showed that the remaining soluble organic matter of the effluent was actually SMPs. In addition, SMPs exhibited biological toxicity which inhibited acetate uptake and nitrification capacity, reduced microbial activity and affected th
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15

Chen, Jia-Fu, and 陳家福. "Influences of Heavy Metals on the Phosphate Removal Efficiency and the Formation of Soluble Microbial Products in EBPR System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/45110965493172652514.

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碩士<br>雲林科技大學<br>環境與安全工程系碩士班<br>98<br>Chemical material manufacturing, metal processing and electronic industries could product a large amount of wastewater with high concentration of heavy metals. This wastewater, which has been pretreated by most factories, may contain lower amounts of heavy metal. When this wastewater discharged into the WWTP in industrial park. It could cause negative influence on biological treatment process, including deterioration of the treatment performance regarding carbon and nutrient removal. The effluent quality in WWTP therefore may fail to meet the required disch
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16

Potvin, Christopher Michael. "Fate Mechanisms and Removal of Tetrabromobisphenol-A (2,2’,6,6’-Tetrabromo-4,4’-isopropylidenediphenol) in the Activated Sludge Process." Thesis, 2012. http://hdl.handle.net/10214/3610.

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A novel method for determination of tetrabromobisphenol-A (TBBPA), was developed using gas chromatography-negative ion chemical ionization-mass spectrom- etry (GC-NCI-MS). Samples of municipal wastewater treatment plant (WWTP) influent were analyzed for TBBPA. Levels ranged from 1 to 41 ng/L, with an average of 20 ± 14 ng/L. Matrix effects were shown to be 30 ± 17 % in the influent and -30 ± 11 % in membrane permeate. The method limit of quantitation was 0.1 ng/L TBBPA. Sorption of TBBPA to fresh mixed-liquor suspended solids (MLSS) from a membrane bioreactor (MBR) were studied. In a kinetic
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17

Negaresh, Ebrahim Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Particle and macromolecular fouling in submerged membrane." 2007. http://handle.unsw.edu.au/1959.4/40743.

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Particles and macromolecular components, including biopolymers (protein and carbohydrate), are viewed as the main foulants in the complex feed submerged membrane filtration systems such as membrane bioreactor (MBR). This work focused on two aspects of fouling in complex fluids: 1- Assessing fouling propensity and mechanisms for various model solutions. 2- Using of two specific solutions modelling biomass found in MBR for a better understanding of the fouling mechanisms in submerged MBR processes. Filtrations were carried out with 0.22 ??m PVDF hollow fibre membrane. Alginate was used as a mod
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18

Mines, Paul. "Soluble Microbial Product Characterization of Biofilm Formation in Bench-Scale." Thesis, 2012. http://hdl.handle.net/10754/255432.

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The biological process known as activated sludge (AS) in conjunction with membrane separation technology for the treatment of wastewater has been employed for over four decades. While, membrane biological reactors (MBR) are now widely employed, the phenomenon of membrane fouling is still the most significant factor leading to performance decline of MBRs. Although much research has been done on the subject of MBR fouling over the past two decades, many questions remain unanswered, and consensus within the scientific community is rare. However, research has led to one system parameter generally
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19

Wu, Siang-Chen, and 吳向宸. "Exploring the membrane biofouling mechanisms of soluble microbial product (SMP) and biofilm by functional bacteria investigation and the relevance between c-di-GMP concentration and biofilm-fouling propensity in membrane bioreactor (MBR)." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/38168304588263810660.

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博士<br>國立中興大學<br>環境工程學系所<br>101<br>Membrane bioreactor (MBR) is a key technology for wastewater reuse because of the high-quality effluent, low sludge yield, and small reactor footprint. However, membrane biofouling in MBRs is a major obstacle that reduces the filtration efficiency, increases the cost-effectiveness, as well as discourages for wide applications. The aims of this study were focused on the mechanism of membrane biofouling attributed to soluble microbial product (SMP) or biofilm attachment by means of investigation of functional bacterial strains. In addition, the relevance between
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