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Dissertations / Theses on the topic 'Chemical oxygen demand (COD)'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Jonsson, Sandra. "Validation of mercury free methods for analysis of Chemical Oxygen Demand in municipial wastewater." Thesis, Uppsala universitet, Analytisk kemi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-269195.

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Water is used every day in society and to be able to recycle this water we depend upon efficient wastewater treatment. It is vital to test the wastewater based on different parameters. One parameter is the Chemical Oxygen Demand (COD), which defines the amount of organic substances that can be chemically oxidized within the water. The Swedish standardized analytical method for COD (SS-028142), COD(Cr) is dependent on mercury, a substance which was banned according to Swedish regulations in year 2009 but is still used due to time limited dispensations. This report is a part of a pre-procurement

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2

Hodzic, Elvisa. "Total organic carbon (TOC) and chemical oxygen demand (COD) - Monitoring of organic pollutants in wastewater." Thesis, Uppsala universitet, Institutionen för medicinsk biokemi och mikrobiologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-160105.

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Total organic carbon (TOC) and chemical oxygen demand (COD) are two methods used for measuring organic pollutants in wastewater. Both methods are widely used but the COD method results in production of hazardous wastes, including mercury.The purpose of this study was to validate the method TOC that will replace COD and find a factor to convert TOC to COD. In this study 26 samples were analyzed from four sewage treatment plant in the municipality of Enköping.The results show that the COD method could be replaced by the TOC method.The factor for COD/TOC was between 3.1 - 3.3. Both methods will b

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3

Barker, Duncan James. "Characterisation, production and removal of residual soluble chemical oxygen demand (COD) from anaerobic treatment effluents." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314133.

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4

Ekström, Karin, and Jenni Borg. "COD fractionation of wastewater on cruise liners before and after advanced treatment." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-123969.

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The purpose of this Bachelor thesis was to establish a method for determining the chemical oxygen demand (COD) fractionation in wastewater from cruise liners. COD fractions of interest were soluble biodegradable (SS), particulate biodegradable (XS), soluble unbiodegradable (SI) and particulate unbiodegradable (XI). Three types of wastewater (gray water, black water and permeate) were analysed and a method with a physiochemical approach was established. The method was originally elaborated by Jun Wu et al in the study “Wastewater COD biodegradability fractionated by simple physical–chemical ana

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5

Mohammed, Warda. "Optimizing Sample Dissolution Methods of Low Water Soluble Intermediate Organic Compounds to Support Environmental Risk Assessment during Active Pharmaceutical Ingredient Manufacturing." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-93416.

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This project focus on investigating the dissolution of low water-soluble intermediate organic compounds called active pharmaceutical ingredients (API) and organic substances that are manufactured by a pharmaceutical company, Cambrex Karlskoga in Sweden. Several dissolution methods were used and evaluated using methods including total organic carbon (TOC), chemical oxygen demand (COD), biochemical oxygen demand (BOD) and Microtox toxicity test. The selection of solvents were based on previous studies and specifications from the Swedish Institute of Standards, SIS.The performance of eight solven

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6

Rava, Eleonora Maria Elizabeth. "Bioaugmentation of coal gasification stripped gas liquor wastewater in a hybrid fixed-film bioreactor." Thesis, University of Pretoria, 2017. http://hdl.handle.net/2263/62789.

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Coal gasification stripped gas liquor (CGSGL) wastewater contains large quantities of complex organic and inorganic pollutants which include phenols, ammonia, hydantoins, furans, indoles, pyridines, phthalates and other monocyclic and polycyclic nitrogen-containing aromatics, as well as oxygen- and sulphur-containing heterocyclic compounds. The performance of most conventional aerobic systems for CGSGL wastewater is inadequate in reducing pollutants contributing to chemical oxygen demand (COD), phenols and ammonia due to the presence of toxic and inhibitory organic compounds. There is an ever-

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7

Essandoh, Helen M. K. "Efficiency of soil aquifer treatment in the removal of wastewater contaminants and endocrine disruptors. A study on the removal of triclocarban and estrogens and the effect of chemical oxygen demand and hydraulic loading rates on the reduction of organics and nutrients in the unsaturated and saturated zones of the aquifer." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5710.

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This study was carried out to evaluate the performance of Soil Aquifer Treatment (SAT) under different loading regimes, using wastewater of much higher strength than usually encountered in SAT systems, and also to investigate the removal of the endocrine disruptors triclocarban (TCC), estrone (E1), 17¿-estradiol (E2) and 17¿- ethinylestradiol (EE2). SAT was simulated in the laboratory using a series of soil columns under saturated and unsaturated conditions. Investigation of the removal of Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), Dissolved Organic Carbon (DOC), nit

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8

Essandoh, Helen Michelle Korkor. "Efficiency of soil aquifer treatment in the removal of wastewater contaminants and endocrine disruptors : a study on the removal of triclocarban and estrogens and the effect of chemical oxygen demand and hydraulic loading rates on the reduction of organics and nutrients in the unsaturated and saturated zones of the aquifer." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5710.

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This study was carried out to evaluate the performance of Soil Aquifer Treatment (SAT) under different loading regimes, using wastewater of much higher strength than usually encountered in SAT systems, and also to investigate the removal of the endocrine disruptors triclocarban (TCC), estrone (E1), 17β-estradiol (E2) and 17α-ethinylestradiol (EE2). SAT was simulated in the laboratory using a series of soil columns under saturated and unsaturated conditions. Investigation of the removal of Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), Dissolved Organic Carbon (DOC), nitrogen an

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9

Yeong, Lung-yuen Christopher. "Removal of wastewater cod and nitrogen using fibrous packing media /." [Hong Kong : University of Hong Kong], 1991. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13193429.

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10

楊龍元 and Lung-yuen Christopher Yeong. "Removal of wastewater cod and nitrogen using fibrous packing media." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1991. http://hub.hku.hk/bib/B31210636.

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11

Copp, John B. "COD balances in biological nutrient (nitrogen and phosphorus) removal activated sludge systems /." *McMaster only, 1998.

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12

McCulloch, Neil Henderson. "The ozonation of sludge-press liquors in wastewater treatment to effectively reduce the chemical oxygen demand." Thesis, University of Kent, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342130.

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13

Narteh, Alexander Tetteh. "Correlation of Fluorescence Spectroscopy and Biochemical Oxygen Demand (BOD5) Using Regression Analysis." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5567.

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This research uses Regression analysis of fluorescence spectroscopy results to correlate with Biochemical Oxygen Demand (BOD5). Fluorescence spectroscopy was applied to samples taken from seven sample sites in the Provo and Orem waste water treatment plants found in Utah County. A total of 161 samples were collected for this research. 23 samples each were taken from four sites in the Provo waste water treatment plant namely Provo head works, aeration basin, primary filter settlement basin and the Provo effluent basin. The Orem head works, the clarifier and the Orem effluent basin were the thre

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14

NOGUEIRA, NETO ANTONIO C. "Avaliacao de teoxidade aguda e cronica em aguas do Rio Jundiai e em afluentes e efluentes da ETE Novo Horizonte, Jundiai, Sao Paulo." reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9450.

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15

Alradaan, Ali. "DYNAMICS OF WASH WATER PARAMETERS IN THE SANITIZATION OF FRESHLY-CUT PRODUCE." Cleveland State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=csu1526384084438372.

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16

Sharma, Swati. "Treatment of Industrial Wastewater Derived Organic Pollutants Using Electrochemical Methods Through Optimization of Operation Parameters." Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/29268.

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Industrial operations produce a notable amount of wastewaters with high concentration of chemical oxygen demand (COD), mostly consisting of organic carbon compounds. The treatment performance of electrochemical methods for organic removal and the effects of process parameters are the subject of this research. Three research tasks were performed. The first task was the removal of organic pollutants from three different industrial wastewaters using two different electrochemical methods; combined electrocoagulation + electrooxidation (EC+EO) and b) electrochemical peroxidation (ECP). Using only

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17

Mohammed, Alahmad Suleiman. "Electrochemical and Electroflotation Processes for Milk Waste Water Treatment." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu151309400205639.

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18

Li, Lihong. "Nanostructured Titanium Dioxide Photoelectrocatalysis Based Analytical Systems for Determination of Organic Compounds." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/365630.

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Chemical oxygen demand (COD) is an important water quality parameter for estimating organic pollution. Conventional COD method has several drawbacks including lengthy assay time, complex procedure and requiring the use of highly toxic and expensive chemicals. Considerable efforts have been devoted to improve conventional COD methods. In this regard, the PeCODTM method has been the most noticeable technique. This method utilizes the superior oxidation power of UV illuminated nanostructured titanium dioxide (TiO2) to achieve organic degradation while simultaneously enabling quantification of the

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19

Oliveira, Maria Margarida da Costa Ferreira Correia de. "Winery wastewater characterisation, monitoring and treatment evaluation using an air micro-bubble bioreactor." Doctoral thesis, ISA, 2013. http://hdl.handle.net/10400.5/6148.

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Doutoramento em Engenharia do Ambiente - Instituto Superior de Agronomia<br>Aerobic treatment systems are commonly employed in winery wastewater treatment, because of their high efficacy, ease of use and versatility. However, a number of these systems are high energy intensive, have high establishment costs, generate large volumes of sludge, and are not yet optimised. This thesis addresses the design and optimisation of a vertical air micro-bubble bioreactor (AMBB), at pilot scale, for the treatment of winery wastewater. Critical operating parameters were adjusted to allow water reuse, the dec

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20

Jiang, Dianlu, and n/a. "Studies of Photocatalytic Processes at Nanoporous TiO2 Film Electrodes by Photoelectrochemical Techniques and Development of a Novel Methodology for Rapid Determination of Chemical Oxygen Demand." Griffith University. School of Environmental and Applied Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040723.155003.

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In this work, a series of simple, rapid and effective photoelectrochemical methodologies have been developed and successfully applied to the study of kinetic and thermodynamic characteristics of photocatalytic oxidation processes at TiO2 nanoparticulate films. As an application of the systematic studies of photocatalytic processes by photoelectrochemical techniques, a rapid, direct, absolute, environmental-friendly and accurate COD analysis method was successfully developed. In this work, the TiO2 nanoparticles colloid was prepared by the sol-gel method. The TiO2 nanoparticles were immobiliz

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21

Paulino, Clariana Zanutto. "Produção de biomassa por Rubrivivax gelatinosus em efluente de abatedouro avícola utilizando métodos industriais /." Araçatuba : [s.n.], 2006. http://hdl.handle.net/11449/94700.

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Orientador: Elisa Helena Giglio Ponsano<br>Banca: Maria Josefa Santos Yabe<br>Banca: Manoel Garcia Neto<br>Resumo: Rubrivivax gelatinosus é uma Bactéria Púrpura Não Sulfurosa (BPNS) que apresenta a capacidade de realizar a biorremediação de águas residuárias e, ao mesmo tempo, produzir pigmentos carotenóides. Os objetivos desse estudo foram a caracterização da curva de crescimento da bactéria no efluente de abatedouro avícola em nível de 1% (v/v) de inóculo, a determinação da produtividade do processo de obtenção de biomassa e a avaliação da capacidade de remoção da Demanda Química Oxigênio do

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22

Ochse, Charles Henry. "Effect of chemical oxygen demand on the ability of some cover crops to prevent mineral accumulation in a sandy vineyard soil irrigated with augmented winery wastewater." Thesis, Cape Peninisula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2002.

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Thesis (MTech (Agriculture))--Cape Peninsula University of Technology.<br>During the past years government regulations concerning winery effluent became stricter to protect the environment. Wineries are continually improving wastewater management and finding appropriate ways to reduce cellar effluent. Due to water scarcity in South Africa, it could be a huge advantage if winery effluent could be used as irrigation water for vineyards. If the industry can re-use the untreated wastewater, it will not only save a huge amount of irrigation water, but it will also be able to get rid of the vast amo

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23

Pires, Helenice Aparecida [UNESP]. "Tratamento de efluente da industrialização de pescado com sistema de ultrafiltração." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151481.

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Pires, Helenice Aparecida. "Tratamento de efluente da industrialização de pescado com sistema de ultrafiltração /." Araçatuba, 2017. http://hdl.handle.net/11449/151481.

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Orientador: Elisa Helena Giglio Ponsano<br>Banca: Sandra Maria de Melo<br>Banca: Manoel Garcia Neto<br>Resumo: A indústria de pescado vem se desenvolvendo para atender à crescente demanda do mercado e, concomitantemente, vem aumentando a quantidade de resíduos descartados em função do processamento. O efluente gerado pelas indústrias de pescado contém matéria orgânica com potencial poluente e, por isso, deve ser tratado previamente ao descarte. Os sistemas de filtração vêm ganhando notoriedade nesse sentido. Assim, o objetivo deste trabalho foi verificar o potencial da operação de ultrafiltraç

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25

Facchin, Andrea. "New path for thermochemical-biological conversion with a power-to-material approach." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23117/.

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I sistemi termochimico-biologici si basano su due proprietà: la capacità dei processi termochimici di dissociare le macromolecole della biomassa producendo composti a basso peso molecolare, e l’abilità dei batteri di convertire substrati anche complessi in sostanze chimiche di valore. Questa tesi ha sviluppato un nuovo approccio metodologico per approfondire la possibilità di un accoppiamento diretto tra pirolisi e digestione anaerobica, allo scopo di produrre acidi grassi volatili (VFA), sinergicamente con l’utilizzo di idrogeno come fonte rinnovabile per aumentare il valore del prodotto fina

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26

Stefánsdóttir, Lára Kristín. "Microbial fuel cells for organic dye degradation." Thesis, KTH, Skolan för bioteknologi (BIO), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215020.

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27

Paulino, Clariana Zanutto [UNESP]. "Produção de biomassa por Rubrivivax gelatinosus em efluente de abatedouro avícola utilizando métodos industriais." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/94700.

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Made available in DSpace on 2014-06-11T19:27:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-12-06Bitstream added on 2014-06-13T18:55:52Z : No. of bitstreams: 1 paulino_cz_me_araca.pdf: 323136 bytes, checksum: 6854d586f088791d23b4e269a253d293 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Rubrivivax gelatinosus é uma Bactéria Púrpura Não Sulfurosa (BPNS) que apresenta a capacidade de realizar a biorremediação de águas residuárias e, ao mesmo tempo, produzir pigmentos carotenóides. Os o

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28

Miller, Mark W. "Optimizing high-rate activated sludge: organic substrate for biological nitrogen removal and energy recovery." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/78208.

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Although the A-stage high-rate activated sludge (HRAS) process destroys some of the chemical energy present in municipal wastewater, this process has been gaining attention as a viable technology for achieving energy neutrality at water resource recovery facilities. In addition to carbon capture for energy recovery, A-stages are also being utilized upstream of shortcut biological nitrogen removal (BNR) processes as these BNR processes often require a controlled influent carbon to nitrogen ratio that is lower than required for conventional BNR processes. While there is extensive knowledge on co

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29

Le, Ngoc Tuan. "Optimisation of sludge pretreatment by low frequency sonication under pressure." Thesis, Toulouse, INPT, 2013. http://www.theses.fr/2013INPT0129/document.

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L'objectif de ce travail est d'optimiser le prétraitement de boues par des ultrasons de puissance (US) à basses fréquences, et en particulier d‘étudier pour la première fois des améliorations possibles en modifiant la pression hydrostatique, et la fréquence jusqu’à l’audible. Après un examen préliminaire des conditions du procédé (conditionnement des boues, type de boues, alcalinisation préalable, contrôle de la température), les effets des paramètres ultrasonores (puissance, intensité, énergie spécifique, fréquence) et de la pression hydrostatique ont été spécifiquement étudiés, séparément et

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30

Molano, Linares Jazmin Desider. "Tratamiento de efluentes de la industria alimentaria por coagulación-floculación utilizando almidón de Solanum tuberosum L. ‘papa’ como alternativa al manejo convencional." Bachelor's thesis, Universidad Ricardo Palma, 2016. http://cybertesis.urp.edu.pe/handle/urp/1117.

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Se evaluó el tratamiento de efluentes de la industria alimentaria por coagulación-floculación utilizando almidón de Solanum tuberosum L. „papa‟ como alternativa al manejo convencional. Los ensayos se realizaron a escala de laboratorio realizando la prueba de jarras con dos coagulantes: sulfato de aluminio y policloruro de aluminio, y dos floculantes: poliacrilamida aniónica y almidón gelatinizado, con variaciones en relación a dosis, concentración y velocidad. Para determinar los parámetros ideales se utilizaron las siguientes variables respuesta: índice de Willcomb, absorbancia, turbidez y de

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31

Zedník, Ondřej. "Využití stavebních recyklátů pro čištění odpadních vod." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409741.

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The constantly tightening wastewater treatment legislation require high-quality runoff from small-scale producers of pollution who are typically represented by small municipalities up to 500 inhabitants or decentralized parts of larger municipalities. Small municipalities are faced with high investment-intensity associated with the acquisition of new wastewater treatment plant. After several years of development, today natural technologies of wastewater treatment are in competition with mechanical-biological treatment plants. Natural technologies can even achieve better results than popular bi

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32

Hostachy, Jean-Christophe. "Réduction de la charge polluante des effluents du blanchiment de la pate à papier par un traitement à l'ozone." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0167.

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Le traitement a l'ozone peut constituer une voie interessante pour la reduction de la toxicite des effluents du blanchiment de la pate a papier. La mise au point du procede d'ozonation s'est attachee a definir les limites du traitement a l'ozone en etudiant l'influence des principaux parametres experimentaux et d'addition de catalyseurs. Dans les conditions les plus favorables, c'est-a-dire a ph alcalin et avec une charge de reactif suffisamment elevee, la reduction des aox atteint 90%. L'effet de l'ozonation sur la charge polluante des effluents a montre, par contre, que les resultats concern

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33

Solano, Aline Maria Sales. "Aplica??o da tecnologia eletroqu?mica como alternativa para a remo??o de corante t?xteis em efluentes sint?ticos e reais utilizando anodos de platina e diamante." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17646.

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Made available in DSpace on 2014-12-17T15:41:54Z (GMT). No. of bitstreams: 1 AlineMSS_DISSERT.pdf: 3248448 bytes, checksum: 238473f18fc530ccf887915ce75c940d (MD5) Previous issue date: 2011-07-14<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>In this work, electrochemical technology was used to treat synthetic wastewater containing Methyl Red (MR) and Blue Novacron (BN) by anodic oxidation using anodes platinum (Pt) and real samples of textile effluents using DDB anodes and platinum (Pt). The removal of color from the galvanostatic electrolysis of synthetic wastewater MR an

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34

KUNAEFI, TRESNA-D. "Etude du potentiel epurateur de la jacinthe d'eau (eichhornia crassipes (mart. Solms) vis-a-vis du fer et du manganese en vue de son application a la potabilisation des eaux de kalimantan -indonesie-." Paris 7, 1988. http://www.theses.fr/1988PA077090.

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35

Hsu, Chih-Yuan, and 許志淵. "The study of chromium and chemical oxygen demand (COD) reduction and carbon fixation by using Chlorella vulgaris." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/c8575a.

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碩士<br>東海大學<br>化學工程與材料工程學系<br>105<br>With the improvement of human quality of life, environmental problems at the same time become the focus of global attention. Green house gas emission and heavy metals pollution has become a global issue of concern due to their higher toxicities. Especially, Cr(VI) is introduced in the environment mainly as a consequence of its industrial use and it has been causing serious environmental pollution due to its carcinogenicity. In this study, the possible use of Chlorella vulgaris biomass as an alternative biosorbent for Cr (VI) removal was investigated. The

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Lin, Syhy Tzong, and 林世宗. "Ⅰ.Determination of the Chemical Oxygen Demand (COD) in Wastewater by Mercury-free Microwave Digestion Ⅱ.The Elution Behavior of Polychlorinated Biphenyls (PCBs) Congeners in Different Chromatographic Column." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/23226615531405258820.

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碩士<br>淡江大學<br>水資源及環境工程學系<br>89<br>Ⅰ. Determination of the Chemical Oxygen Demand (COD) in Wastewater by Mercury-free Microwave Digestion The traditional method for the determination of chemical oxygen demand (COD) in wastewater is mainly to digest the organics by open reflux method and the potassium dichromate as oxidant. This process is not only time-consuming but also produces a large amount of toxic waste . The silver nitrate solution instead of mercury sulfate for removal the chloride interference in determination of COD using microwave method has been studied i

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Yu, Fang, and 鄭芳宇. "The study of chemical oxygen demand determination of saline water." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/12376297741510570640.

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碩士<br>正修科技大學<br>化工與材料工程研究所<br>97<br>The chemical oxygen demand is reflects the water body one of organic matter pollution degree important targets, however in water sample if has the chloride ion, can have the serious disturbance in the chemical oxygen demand determination to cause to measure the value is high, then misinterprets its analysis result, this research in view of Executive Yuan environmental protection bureau environment examination center water quality examination announcement method (NIEA W516.54A), the high concentrated halogen ion of chemical oxygen demand examination method in

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Chen, Shin-Jiun, and 陳信君. "Determination of the Chemical Oxygen Demand in Wastewater Using Microwave Energy." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/75385075936059482979.

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碩士<br>淡江大學<br>水資源及環境工程學系<br>85<br>(1)Deteimination of the Chemical Oxygen Demand in the Wastewater Using Microwave Energy A method for the determination of chemical oxygen demand(COD) by the dichromate reflux method is used as a measure of the organic matter content of a sample. Although it is the standard method of the EPA, but it takes a long time and a lot of liquid waste. The use of microwave in analytical and environmental chemistry has increased markedly in recent year, in this study, a method to determine the COD using household microwave oven and mercury-free has been developed.

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TSAI-CHUN-NAN and 蔡俊男. "Feasibility of Treating High Chemical Oxygen Demand Wastewater Using Polyalumino-chloride." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/64532671490714047506.

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碩士<br>國立屏東科技大學<br>環境工程與科學系所<br>101<br>Petroleum industry is a fundamental public industrial for a country. In the past iron chloride is usually used as the coagulant for such kind of wastewater. However the corrosion and blocking of pipe is serious in the use of iron chloride, currently Polyaluminum chlorine (PAC) is more popular for using as coagulant. The study had focused on the used chemical sedimentation tank to explore the chemical oxygen demand (COD) removal rate, reproducibility, and the best operating conditions in a industrial resin manufacturing plant for treating their produced

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Ciou, Sin-Hao, and 邱信豪. "A Photoelectrocatalytic Method Using Titanium Dioxide Nanotube Arrays for Chemical Oxygen Demand Determination." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/48255277122479019878.

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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>100<br>Chemical oxygen demand (COD) is one of the main items of water quality monitoring parameters. The standard method for the detection of COD is potassium dichromate method (CODcr ). The standard dichromate chemical oxygen demand (COD) method is a time-consuming and tedious and prone to the shortcomings of secondary pollution. The standard method can not be timely monitoring Demand. due to superior physical, chemical, and optical properties, titanium dioxide has been successfully applied to photocatalytic reaction. In this study, used a TiO2 nanotube arrays

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Lin, Ying, and 林螢. "Development of Chemical Oxygen Demand Reaction Rate as a Tracing Method of Wastewater Source." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/45839337252237190241.

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碩士<br>國立屏東科技大學<br>環境工程與科學系所<br>101<br>Abstract Student ID: N10031003 Title of Thesis: Development of Chemical Oxygen Demand Reaction Rate as a Tracing Method of Wastewater Source Total Pages: 58 Name of Institute: National Pingtung University of Science and Technology Name of Department: Department of Environmental Engineering and Science Date of Graduation: July, 2013 Degree Conferred: Master Name of Student: Ying Lin Adviser: Dr. Wu-Jang Huang The Contents of Abstract in this Thesis: Taiwan is densely populated and usually associated with the establis

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Ting, Yu-Chiao. "A Study of Multichannel Method for Rapid Determination of Chemical Oxygen Demand Using Microwave Digestion." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0002-1303200716281100.

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Ting, Yu-Chiao, and 丁裕樵. "A Study of Multichannel Method for Rapid Determination of Chemical Oxygen Demand Using Microwave Digestion." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/s32er2.

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碩士<br>淡江大學<br>水資源及環境工程學系碩士班<br>95<br>A simple multichannel method for rapid determination of chemical oxygen demand (COD) using microwave digestion system to replace the conventional open reflux method is proposed. The method based on use of a modified microwave heating oven to accelerate the rate of the digestion step is described. This method consists of a first digestion step where the samples and oxidants in Teflon coil (five coils at a time) are heated by the microwave radiation and a second one where the Cr3+ in digested sample after being filtered is determined by the spectrometry. The

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Hung, Ming Tsai, and 洪明財. "Determination of Chemical Oxygen Demand in waters containing high chloride concentration by Ultra-Violet Spectroscopy." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/44706406526713863777.

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碩士<br>淡江大學<br>水資源及環境工程所<br>83<br>Chemical Oxygen Demand (COD) for determination by the dichromate reflux method cannot be accurately measured in water containing more than 2,000mg/l of Cl-. Though the procedure 〝 remove chloride─dichromate reflux〞 is developed currently to measure COD in water containing high chloride concentration that the interference may be overcome, the disadvantage is time consuming and waste generation of hazardous mercury. Therefor,in t

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Huang, Yu-Chin, and 黃玉琴. "A Study of Flow Injection Method for Rapid Determination of Chemical Oxygen Demand Using Microwave Digestion." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/54633991211322316594.

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碩士<br>淡江大學<br>水資源及環境工程學系碩士班<br>93<br>A simple method for determination of chemical oxygen demand using microwave digestion in wastewater is proposed. Chemical oxygen demand (COD) is a widely used parameter used to measure water quality, as well as to control the treatment process. It is one of the important index in water monitoring. This parameter is defined as the amount of oxygen required for, or equivalent to, the oxidation of all chemically oxidizable matter in water. The traditional method for COD determination consists of oxidizing the organic matter of the sample, is done by adding a k

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Jiang, Song-Lin, and 江松玲. "Preparation of high orderd TiO2 Nanotube Array Electrode for the Photoelectrocatalysis Determination of Chemical Oxygen Demand." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/75378317415648343216.

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碩士<br>國立宜蘭大學<br>環境工程學系碩士班<br>101<br>Chemical oxygen demand (COD) is an important index for the detection of organic pollutant in water. Traditional chemical detection method needs to reflux a long time under oxidation (about 2 to 4 hours), and toxic, corrosive chemicals (ex. potassium dichromate, silver sulfate, etc.). It may cause secondary pollution in the environment. In addition, Cl- may interference COD detection. Furthermore, the detection range of COD is very norrow and about 10 ~ 220 mg/L with traditional chemical method. In this study, high ordered titanium dioxide nanotube array film

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Wu, Yi-Hua, and 吳怡嬅. "Improvement of the Analytical Method for Chemical Oxygen Demand of Water Samples with High Chloride Concentration." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/37104547125620132841.

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Xie, Shen-Xue, and 謝諗學. "The Feasibility Study of Heavy Metal Removal and Chemical Oxygen Demand Reducing in Plating Wastewater using Precipitation and Coagulation." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/z92m62.

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碩士<br>嘉南藥理大學<br>環境工程與科學系<br>103<br>Electrical plating is one of the typical small-scale traditional manufactory industries. Wastewater treatment methods in electrical plating factories are traditional method of chemical precipitation. Facing the serious environmental protection law, limitation of space makes the factories only can do modification of the treatment process or try to upgrade the treatment efficiency. This research focuses a wastewater sample from one electrical plating factory where the wastewater treatment system contains wastewater collecting drain from different units after th

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Pisczek, Jaime Christine. "An evaluation of anoxic/aerobic treatment for the removal of chemical oxygen demand and fiber reactive azo dye color." 2005. http://www.lib.ncsu.edu/theses/available/etd-04262005-141218/unrestricted/etd.pdf.

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Huang, Shih-Yang, and 黃式揚. "A Study on the Determination of the Chemical Oxygen Demand in Wastewaters Using Open Focus Microwave Digestor Coupled with Spectrophotometry." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/34036937788096986163.

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碩士<br>淡江大學<br>水資源及環境工程學系<br>87<br>Ⅰ.A Study on the Determination of the Chemical Oxygen Demand in Wasterwaters Using Open Focus Microwave Digestor Coupled with Spectrophotometry The traditional method for the determination of Chemical Oxygen Demand (COD) in wastewaters is mainly to digest the organics by open reflux method and then to titrate the residual Potassium dichromate by ferrous ammonium sulfate. This process not only is time-consuming but also requires a large amount of reagent. Therefore, the goals of this study are to digest the organics in wastewaters using open focus mi

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