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Relevant bibliographies by topics / Refractory nitrogen and COD

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Academic literature on the topic 'Refractory nitrogen and COD'

Author: Grafiati

Published: 20 April 2024

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Journal articles on the topic "Refractory nitrogen and COD"

1

Song, Yu Lin, Masanobu Uchida, and Sotaro Higuchi. "Effects of Incinerator Exhaust Gas Treatment Agents and Fly Ash Processing Chelates on MSW Landfill Management." Applied Mechanics and Materials 768 (June 2015): 233–39. http://dx.doi.org/10.4028/www.scientific.net/amm.768.233.

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Lime used to treat flue gas from incinerators and organic chelating agents used to remove heavy metals from fly ash create a highly saline and alkaline environment at landfill sites, causing nitrification inhibition that hampers nitrogen treatment and generating refractory COD in the processes of organic stabilization by microbes and leachate treatment. The authors analyzed organic chelating agents and fly ash treated with the chelating agents, and monitored leachate from lysimeters, or simulated landfills. The results showed that organic chelating agents acted as nitrification inhibitors, and

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2

Deng, Miao, Keming Wu, Tao Yang, et al. "Construction of Novel Electro-Fenton Systems by Magnetically Decorating Zero-Valent Iron onto RuO2-IrO2/Ti Electrode for Highly Efficient Pharmaceutical Wastewater Treatment." Water 14, no. 7 (2022): 1044. http://dx.doi.org/10.3390/w14071044.

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The Electro-Fenton (E-Fenton) technique has shown great potential in wastewater treatment, while the sustainable and continuing supply of Fe2+ remains challenging. Herein, we demonstrate the construction of a novel E-Fenton system by magnetically decorating zero-valent iron (ZVI) onto a RuO2-IrO2/Ti (ZVI-RuO2-IrO2/Ti) electrode for high-efficient treatment of pharmaceutical wastewater, which is considerably refractory and harmful to conventional biological processes. By using ZVI as a durable source of Fe(II) irons, 78.69% of COD and 76.40% of TOC may be rapidly removed by the developed ZVI-Ru

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3

Wang, C. R., Z. F. Hou, M. R. Zhang, J. Qi, and J. Wang. "Electrochemical Oxidation Using BDD Anodes Combined with Biological Aerated Filter for Biotreated Coking Wastewater Treatment." Journal of Chemistry 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/201350.

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Coking wastewater is characterized by poor biodegradability and high microorganism toxicity. Thus, it is difficult to meet Grade I of Integrated Wastewater Discharge Standard of China by biological treatment technology; specifically, COD cannot meet above standard due to containing refractory organics. A novel coupling reactor, electrochemical oxidation using BDD anodes and biological aerated filter (BAF), has been developed for carbon and nitrogen removal from biotreated coking wastewater, focusing on COD, BOD5,NH4+-N, andNO3--N removal on operation over 90 days with average effluent value of

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Wang, Jian, Cong Du, Feng Qian, Yonghui Song, and Liancheng Xiang. "Enhanced Treatment of Pharmaceutical Wastewater by an Improved A2/O Process with Ozone Mixed Municipal Wastewater." Water 12, no. 10 (2020): 2771. http://dx.doi.org/10.3390/w12102771.

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A pilot-scale experiment is carried out for treating mixed wastewater containing pharmaceutical wastewater (PW) and domestic wastewater (DW), by a process that is a combination of hydrolysis acidification-ozone-modified anaerobic–anoxic–aerobic-ozone (A2/O) (pre-ozone) or hydrolysis acidification-modified A2/O-ozone (post-ozone). The effects of different mixing ratios of PW and DW and pre-ozone treatment or post-ozone treatment on the removal of nitrogen and phosphorus and chemical oxygen demand (COD) are compared and studied. The optimal ratio of PW in mixing wastewater is 30%, which has the

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Hosomi, Masaaki, Inamori Yuhei, Kazuo Matsushige, and Ryuichi Sudo. "Denitrification of Landfill Leachate by the Modified Rotating Biological Contactor (RBC)." Water Science and Technology 23, no. 7-9 (1991): 1477–85. http://dx.doi.org/10.2166/wst.1991.0600.

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In order to remove high-strength nitrogen and organics in landfill leachate simultaneously, the modified RBC which was combined with the standard RBC and the anaerobic biofilter was proposed. The treatability for actual landfill leachate of the standard RBC and the modified RBC was evaluated. The capability of COD removal in the modified RBC is much greater than that in the standard RBC, although both RBCs showed a BOD removal rate of more than 95%. This suggested that the combination method of aerobic and anaerobic treatment was effective in reducing refractory organic compounds. The nitrogen

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6

Zhang, Dejin, Weicheng Han, Yujun Zhou, et al. "Feasibility of Bio–Coagulation Dewatering Followed by Bio–Oxidation Process for Treating Swine Wastewater." International Journal of Environmental Research and Public Health 20, no. 4 (2023): 2990. http://dx.doi.org/10.3390/ijerph20042990.

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The unsatisfactory performance of the conventional swine wastewater treatment is drawing increasing attention due to the large amount of refractory chemical oxygen demand (COD), nitrogen, and phosphorus attached to the suspended solids (SS). In this study, for the first time, a novel process based on bio–coagulation dewatering followed by a bio–oxidation (BDBO) system was developed to treat swine wastewater containing high–strength SS, COD, TN, and TP. Firstly, after the bio–coagulation process, the removal efficiencies of SS, COD, NH3–N, and TP reached as high as 99.94%, 98.09%, 61.19%, and 9

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7

Martínez-Cruz, Alfredo, and María Neftalí Rojas-Valencia. "Assessment of Phytotoxicity in Untreated and Electrochemically Treated Leachates through the Analysis of Early Seed Growth and Inductively Coupled Plasma-Optical Emission Spectroscopy Characterization." Horticulturae 10, no. 1 (2024): 67. http://dx.doi.org/10.3390/horticulturae10010067.

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The treatment of stabilized leachates with high refractory organic matter content, which are over 10 years old, presents a challenge. This study explored the potential of electro-coagulation (EC) and electro-oxidation (EO) treatment systems to address this issue. The objective of this study was to investigate the phytotoxicity of the proposed treatment system on seed growth and examine possible relationships between phytotoxicity results and the characterization of leachates, effluents, soil, and radicles. Phytotoxicity tests were conducted on seeds of Lactuca sativa, Cucumis sativus, and Phas

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8

Wang, Jiaqi, Zhengguang He, Yuzhong Wang, and Manjing Lu. "Electrochemical/Peroxymonosulfate/NrGO-MnFe2O4 for Advanced Treatment of Landfill Leachate Nanofiltration Concentrate." Water 13, no. 4 (2021): 413. http://dx.doi.org/10.3390/w13040413.

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A simple one-pot method was used to successfully embed manganese ferrite (MnFe2O4) nanoparticles on the nitrogen-doped reduced graphene oxide matrix (NrGO), which was used to activate peroxymonosulfate to treat the landfill leachate nanofiltration concentration (LLNC) with electrochemical enhancement. NrGO-MnFe2O4 and rGO-MnFe2O4 were characterized by various means. This indicates that nitrogen-doped could induce more graphene oxide (GO) spall and reduction to produce more active centers, and was favorable for uniformly loading MnFe2O4 particles. The comparison between electrochemical/peroxymo

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9

Graja, S., and P. A. Wilderer. "Characterization and treatment of the liquid effluents from the anaerobic digestion of biogenic solid waste." Water Science and Technology 43, no. 3 (2001): 265–74. http://dx.doi.org/10.2166/wst.2001.0146.

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The process wastewater generated by the fermentation of biogenic fractions of solid waste (biowaste) is characterized by very specific composition features, which sets it apart from the well known categories of wastewater. Up to now, there is a definite lack of practical experience and know-how in the treatment of those effluents. In view of the increasingly wide acceptance awarded to the fermentation process, it appears necessary, however, to include the treatment of the generated wastewater in the overall process and to grant it the same priority as the fermentation step. In this study, pilo

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Capodici, M., D. Di Trapani, and G. Viviani. "Co-treatment of landfill leachate in laboratory-scale sequencing batch reactors: analysis of system performance and biomass activity by means of respirometric techniques." Water Science and Technology 69, no. 6 (2014): 1267–74. http://dx.doi.org/10.2166/wst.2014.005.

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Aged or mature leachate, produced by old landfills, can be very refractory; for this reason mature leachate is difficult to treat alone, but it can be co-treated with sewage or domestic wastewater. The aim of the study was to investigate the feasibility of leachate co-treatment with synthetic wastewater, in terms of process performance and biomass activity, by means of respirometric techniques. Two sequencing batch reactors (SBRs), named SBR1 and SBR2, were fed with synthetic wastewater and two different percentages of landfill leachate (respectively 10% and 50% v v−1 in SBR1 and SBR2). The re

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Dissertations / Theses on the topic "Refractory nitrogen and COD"

1

Faixo, Sylvain. "Caractérisation et oxydation de composés organiques réfractaires issus du traitement thermique de boues d’épuration." Electronic Thesis or Diss., Toulouse, INSA, 2023. http://www.theses.fr/2023ISAT0059.

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Le traitement des boues générées dans les stations d’épuration représente un enjeu majeur d’optimisation globale énergétique et de flux de matières. Parmi les procédés émergents, les traitements thermiques de boues peuvent conduire à divers avantages : production de méthane plus élevée en digestion anaérobie, meilleure déshydratabilité en centrifugation ou hygiénisation des boues. Ils produisent cependant des composés bioréfractaires au travers des réactions de Maillard. Ces composés appelés mélanoïdines sont des polymères issus de processus de chimie combinatoire. Ils sont de poids moléculair

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2

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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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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au, L. Hughes@murdoch edu, and Leonie Hughes. "Multistage and multiple biomass approaches to efficient biological nitrogen removal using biofilm cultures." Murdoch University, 2008. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20080523.134154.

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Nitrogen removal from wastewater is important for the revention of significant health and environmental impacts such as eutrophication. Nitrogen removal is achieved by the combined action of nitrification and denitrification. Nitrification is performed by autotrophic, slow growing microorganisms that require oxygen and are inhibited in the presence of denitrifiers when oxygen and COD are available due to competition for oxygen. Denitrification however, performed by relatively fast growing heterotrophic bacteria, is inhibited by oxygen and requires COD. This implies that nitrification and denit

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5

Copp, John B. "COD balances in biological nutrient (nitrogen and phosphorus) removal activated sludge systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0022/NQ50987.pdf.

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

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7

Lettie, Lucia. "REMOVAL OF REFRACTORY TKN FROM AN EFFLUENT WASTEWATER USING SODIUM FERRATE." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4326.

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This research addresses refractory forms of nitrogen that, even with advanced biological nitrification-denitrification systems are not removed completely from domestic wastewater. TKN (Total Kjeldahl Nitrogen), ammonia plus organic nitrogen, is one of the forms to measure the levels of nitrogen present in effluent wastewaters. Ferrate, a strong oxidant, was used for the treatment of these nitrogen forms with the objective of producing nitrogen compounds that can be removed by subsequent biological processes. Bench-scale experiments were performed on effluent samples taken prior to chlorination

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8

Stenström, Ylva. "Phosphorus and Nitrogen Removalin Modified Biochar Filters." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-321915.

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Onsite wastewater treatment systems in Sweden are getting old and many of them lack sufficient phosphorus, nitrogen and organic carbon reduction. Biochar is a material that has been suggested as an alternative to the common sand or soil used in onsite wastewater treatment systems. The objective of this study was to compare the phosphorus removal capacity between three different modified biochars and one untreated biochar in a batch adsorption and column filter experiment. The modifications included impregnation of ferric chloride (FeCl3), calcium oxide (CaO) and untreated biochar mixed with th

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9

Chadwick, Terry D. "Nitrogen excretion and expression of urea cycle enzymes during early life stages of Atlantic cod and rainbow trout." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35873.pdf.

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10

Vu, Thi Nguyet, Van Tua Tran, Dinh Kim Dang, Thi Kim Anh Bui, and Hai Yen Vu. "Application of ecological technology for removal of COD, nitrogen and phosphorus from piggery wastewater after biogas production technology." Technische Universität Dresden, 2016. https://tud.qucosa.de/id/qucosa%3A32627.

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Despite a positive contribution to economic – social development, the growth of piggeries has caused heavily environmental pollution. Currently, treated wastewater of pig farms unfortunately does not meet the national discharge standards yet. This paper presents some research results on the removing COD, nitrogen and phosphorus in piggery wastewater after anaerobic (biogas) process at pilot scale by the combined system using Phragmites australis, Cyperus alternifolius, Vetiveria zizanioides and Eichhornia crassipes. The experimental results showed that the wastewater loading rate of 47.35 l/m2

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Books on the topic "Refractory nitrogen and COD"

1

Desimone, Leslie A. A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Desimone, Leslie A. A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Desimone, Leslie A. A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Desimone, Leslie A. A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. G.P.O., 1996.

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Desimone, Leslie A. A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Desimone, Leslie A. A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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7

M, Barlow Paul, Howes Brian L, Massachusetts. Dept. of Environmental Protection. Office of Watershed Management, and Geological Survey (U.S.), eds. A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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8

Desimone, Leslie A. A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Book chapters on the topic "Refractory nitrogen and COD"

1

Tomashik, Vasyl. "Boron – Carbon – Nitrogen." In Refractory metal systems. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88053-0_19.

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Tomashik, Vasyl. "Carbon – Nitrogen – Silicon." In Refractory metal systems. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-02700-0_34.

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Perrot, Pierre. "Carbon – Nitrogen – Uranium." In Refractory metal systems. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-02700-0_35.

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Tomashik, Vasyl´. "Boron – Nitrogen – Titanium." In Refractory metal systems. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-02700-0_7.

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Perrot, Pierre. "Iron – Nitrogen – Titanium." In Refractory metal systems. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-00771-2_23.

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Tomashik, Vasyl, Tamara Velikanova, Mikhail Turchanin, and Dmytro Pavlyuchkov. "Molybdenum – Nitrogen – Titanium." In Refractory metal systems. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-00771-2_27.

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Tomashik, Vasyl. "Nitrogen - Oxygen - Silicon." In Refractory metal systems. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-00771-2_38.

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Perrot, Pierre. "Nitrogen - Uranium - Zirconium." In Refractory metal systems. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-00771-2_39.

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9

Liu, Hao, and Zhi-kang Zhang. "Numerical Investigation of the Environment Capacity of COD, Inorganic Nitrogen and Phosphate in the Bohai Bay." In Communications in Computer and Information Science. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6364-0_74.

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Phu, Song Toan Pham. "Research on the Correlation Between Chlorophyll-a and Organic Matter BOD, COD, Phosphorus, and Total Nitrogen in Stagnant Lake Basins." In Sustainable Living with Environmental Risks. Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54804-1_15.

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Conference papers on the topic "Refractory nitrogen and COD"

1

Wang, Yu-Lan, and Shui-Li Yu. "Simultaneous COD, Nitrogen and Phosphate Removal in an Aerobic Granular Sludge Membrane Bioreactor." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5163402.

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Arzuov, M. A., B. I. Gaynullin, and S. A. Ubaidullaev. "High-temperature fusion of nitrogen compounds at laser influence on refractory metals." In Seventh International Conference on Laser and Laser Information Technologies, edited by Vladislav Y. Panchenko and Vladimir S. Golubev. SPIE, 2002. http://dx.doi.org/10.1117/12.464132.

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Zhang, Cheng. "Numerical Modeling of Coal Gasification in an Entrained-Flow Gasifier." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88481.

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The gasification technology has been applied in Integrated Gasification Combined Cycle (IGCC) plants for the production of power, and polygeneration plants for the production of industrial chemicals, fuels, hydrogen, and power. The major advantages of the gasification technology are its potential for feed-stock flexibility, product flexibility, and relative simple removal of harmful emissions of nitrogen oxides (NOx), sulfur oxides (SOx), and CO2. Entrained-flow gasifiers are the preferred gasifier design for future deployment due to their high carbon conversion, high efficiency and high synga

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4

Hayami, Yuichi, and Yuichi Hayami. "DECADAL SCALE VARIATION IN BOTTOM DO AND COD DYNAMICS IN THE INNER AREA OF ARIAKE SEA, JAPAN." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b939063c9c3.99016046.

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The dissolved oxygen, COD (Chemical Oxygen Demand) and DIN (Dissolved Inorganic Nitrogen) data for more than 30 years in the inner area of Ariake Sea, Japan were analyzed with a box model. The bottom water in this area easily became hypoxic from the 1970s to the early 90s associated with the increase in COD. There were minimal increases in terrestrial COD and nutrient loads in this period and there remained tidal flats over a widespread area. The increase in COD was caused by the increase in internal production (net ecosystem production in the sea). This would be due to the enhanced primary pr

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Hayami, Yuichi, and Yuichi Hayami. "DECADAL SCALE VARIATION IN BOTTOM DO AND COD DYNAMICS IN THE INNER AREA OF ARIAKE SEA, JAPAN." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b431561360b.

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The dissolved oxygen, COD (Chemical Oxygen Demand) and DIN (Dissolved Inorganic Nitrogen) data for more than 30 years in the inner area of Ariake Sea, Japan were analyzed with a box model. The bottom water in this area easily became hypoxic from the 1970s to the early 90s associated with the increase in COD. There were minimal increases in terrestrial COD and nutrient loads in this period and there remained tidal flats over a widespread area. The increase in COD was caused by the increase in internal production (net ecosystem production in the sea). This would be due to the enhanced primary pr

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Takanashi, Reiko, Takehiko Kaneko, Riho Endo, et al. "Evaluation on the Drinking Water Quality Concerning Bacteria and Inorganic Nitrogen, PO4-P and COD Using Spring Water Samples." In The 4th World Congress on New Technologies. Avestia Publishing, 2018. http://dx.doi.org/10.11159/icepr18.127.

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Zhu Dongnan, Li Changyou, Sun Biao, Zhao Shengnan, and Shi Xiaohong. "Temporal and spatial distribution of total nitrogen, total phosphorus and COD in the largest shallow lake of the upper Yellow River." In 2011 International Symposium on Water Resource and Environmental Protection (ISWREP). IEEE, 2011. http://dx.doi.org/10.1109/iswrep.2011.5893118.

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Bonchkovskyi, Andrii. "Assessment of anthropogenic pressure by nutrients and organic substances in the Sula river basin." In International Conference of Young Scientists on Meteorology, Hydrology and Environmental Monitoring. Ukrainian Hydrometeorological Institute, 2023. http://dx.doi.org/10.15407/icys-mhem.2023.029.

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The paper focuses on a man caused pressure in the Sula River with organic substances and nutrients which are the main factors affecting the water status. The Sula River is a left tributary of the Dnipro River flows into the Sulynska Bay of the Kremenchuk Reservoir. The water resources of the Sula River are used for drinking water supply, melioration, fish farming, etc. The Sulynska Bay is a spawning area for fish and the place of their largest commercial concentration. For a long time, the bay has been experiencing frequent cases of a critical decrease in dissolved O2, resulting in fish kills.

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9

Radu, Florina, Sofia Popescu, Antoanela Cozma, Alexandru Rinovetz, and Bogdan Radoi. "EARLY REMEDIATION OF WASTEWATERS FROM ROMANIAN FOOD INDUSTRY: A CASE STUDY OF IMPROVING THE QUALITY OF DAIRY INDUSTRY WASTEWATER." In 22nd International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/3.2/s12.07.

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The purpose of this study was to demonstrate the role played by different wastewater treatment technologies in the dairy industry in the context of the challenges of sustainable development: water scarcity and conservation of water resources, the constant growth of the population and the costs of wastewater treatment in centralized systems, increasing constraints and stricter environmental protection regulations. In this sense, the efficiency of wastewater treatment plants belonging to a number of 8 factories was determined. The studied factories were divided into three groups according to the

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10

Wibowo, Agus Hadi, Chairul Irawan, Abubakar Tuhuloula, and Ridhayanti Mu'minah. "Treatment of Laboratory Wastewater with High Sulfate Concentrations Using <i>Eco-Enzyme </i>as an Environment-Friendly Coagulant." In 4th International Seminar on Fundamental and Application of Chemical Engineering. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-f1xo4r.

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Laboratory activities for testing nitrogen levels of natural rubber production are carried out to determine the nitrogen content to meet the Standard Indonesian Rubber (SIR). The test parameters use hazardous chemicals such as strong acids, i.e. sulfuric acid, which have corrosive properties. Testing activities in the laboratory will produce by-products in the form of liquid wastewater containing high sulfate concentrations. A cheap and environmentally friendly wastewater treatment system is required in this research, namely a coagulation-flocculation system using eco-enzyme as a liquid coagul

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Reports on the topic "Refractory nitrogen and COD"

1

A nitrogen-rich septage-effluent plume in a glacial aquifer, Cape Cod, Massachusetts, February 1990 through December 1992. US Geological Survey, 1996. http://dx.doi.org/10.3133/wsp2456.

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2

Map showing weight percent of total nitrogen in the surficial sediments of the Mid-Atlantic continental margin, Cape Cod to Albemarle Sound. US Geological Survey, 1990. http://dx.doi.org/10.3133/i1987c.

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