Patent
Process for the biological purification of a water containing ammonium perchlorate
Gaudre Marie,Jean-Michel Tauzia +1 more
TLDR
In this article, a process for the biological purification of a water containing ammonium perchlorate is described, where aqueous ammonium-perchlorate solution is placed in contact, in a first, aerobic reactor, with an activated sludge in the presence of at least one source of mineral carbon and nutritional elements for the metabolism of the microorganisms.Abstract:
The invention relates to a process for the biological purification of a water containing ammonium perchlorate, characterized in that aqueous ammonium perchlorate solution is placed in contact, in a first, aerobic reactor, with an activated sludge in the presence of at least one source of mineral carbon and nutritional elements for the metabolism of the microorganisms, and then in that the liquid effluent leaving the first reactor is placed in contact, in a second, anoxic reactor, with an activated sludge, in the presence of at least one source of organic carbon and nutritional elements for the metabolism of the microorganisms. The process makes it possible to treat aqueous solutions containing very large amounts of ammonium perchlorate and to convert both the ammonium ions into molecular nitrogen and the perchlorate ions into chloride ions.read more
Citations
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Journal ArticleDOI
Microbial Degradation of Perchlorate: Principles and Applications
TL;DR: A review of the application of microbiological systems for degrading perchlorate can be found in this article, where anaerobic biological reactors and ion exchange have been used to remove perchlorates from drinking water.
Journal ArticleDOI
Recovery of Ammonium Perchlorate from Obsolete Ammunition and Its Application in Synthesis of Lithium Perchlorate
Patent
Method and apparatus for treating nitrate waste liquid
Naoki Ogawa,Katsushi Shibata,Kazuhiko Kuroda,Hiromitsu Nagayasu,Kuniaki Takahashi,Yoshimi Kawato,Yoshihiro Meguro +6 more
TL;DR: In this article, a denitrification tank (12A) is used to separate denitrified liquid into a solid content and the denitification-treated liquid (24) by using a first solid-liquid separating film.
Patent
Process and apparatus for the biological treatment of waste water
TL;DR: In this article, a biological treatment process of waste water was proposed, where a decrease of the phosphate concentration in water together with an ammonium ions removal step performed under controlled concentrations of dissolved oxygen and/or under controlled quantities of nitrate and soluble manganese and iron ions, provided a significant decrease in the oxygen consumption and sludge production of said process.
Patent
Waste-water treatment apparatus comprising perchlorate, and treatment method thereof
TL;DR: In this article, a processing apparatus of waste water including perchlorate is provided to prevent excessive anaerobic at a backend sub-anaerobic tank by flowing in a part of the waste water.
References
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Patent
Method and apparatus for treating hydrocarbon and halogenated hydrocarbon contaminated ground and ground water
TL;DR: A method and apparatus for treating ground and ground water contaminated with hydrocarbon and halogenated hydrocarbon compounds is described in this paper, where growth of microorganisms is enhanced under controlled conditions by addition of nutrients and gases such as oxygen, nitrogen, carbon dioxide or a combination of these and other gases to the contaminated water.
Patent
Process for purification of industrial waste waters from perchlorates and chlorates
Vladimir Nikolaevich Korenkov,Vitaly Ivanovich Romanenko,Sergei Ivanovich Kuznetsov,Jury Viktorovich Voronov +3 more
TL;DR: In this article, a strain of the microorganism Vibrio dechloraticans Cuznesove B-1168 was grown by successive inoculations on a liquid nutrient medium containing sources of carbon, nitrogen, and phosphorus under anaerobic conditions in the presence of a perchlorate as a donor of oxygen.
Patent
Propellant wastewater treatment process
Hubert Attaway,Mark D. Smith +1 more
TL;DR: In this article, a method for treatment and disposal of propellant wastewaters, soil washwaters or groundwaters having dissolved perchlorate salts is described, which comprises adding to the contaminated water in an anaerobic reactor a mixed bacterial culture containing a specific bacterium, HAP1, which uses perchlorates as its terminal electron acceptor and thus reduces the per chlorate ion to chloride in the water.
Patent
Process and apparatus for removing impurities dissolved in water
TL;DR: In this paper, a process for removing impurities dissolved in water, and more particularly organic nitrogen compounds, nitrates, nitrites and ammonium compounds utilizing biological processes, was disclosed, comprising the steps of passing in the presence of a normal atmosphere the water to be purified in downwardly flowing manner through a system which ensures ammonification and nitrification, then passing said water in a nitrogen atmosphere through a physically expels oxygen, and finally after draining off the gases formed from the impurities, removing purified water and an apparatus for carrying out said process.
Patent
Bio-degradation of ammonium perchlorate, nitrate, hydrolysates and other energetic materials
TL;DR: In this paper, a method and system for carrying out the bio-degradation of perchlorates, nitrates, hydrolysates and other energetic materials from wastewater, including process groundwater, ion exchange effluent brines, hydrolyzed energetics, drinking water and soil wash waters, which utilizes at least one micro-aerobic reactor having a controlled microaerobic environment and containing a mixed bacterial culture.