LECHOS NITRIFICANTES PDF

Construccion de lecho nitrificante. Construccion de lecho nitrificante. Image may contain: one or more people and outdoor. English (US); Español · Français. Determinación del diámetro óptimo de zeolita para el asentamiento de bacterias nitrificantes en un reactor de lecho fluidizado para eliminar nitrógeno. Lo que se busca es la eliminaciÛn de los nitratos que contaminan las aguas empleando bacterias nitrificantes. El soporte que se emplea para que las bacterias.

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As a general fact, one can conclude that the zeolite was a good support nitrificzntes microorganism population, in this case of nitrifying bacteria for the removal of nitrogen.

The optimum crushing and sieving times for the zeolite was determined to be 10 min and 8 min, respectively. Nitrificzntes most countries, there are laws and legal regulations establishing limits for the concentration of ammoniacal nitrogen in the wastewater industry such as the Biological Oxygen Demand BOD and Chemical Oxygen Demand COD [17].

Elsevier Science 38, pp. COD T results are shown in Fig.

The reactor was filled with g of zeolite, mL of liquid industrial waste and mL of sludge. Pozo-Antonio, received a Bs. Among the most common biological processes, we have fluidized activated sludge, where a granular bed within a column is used. Nitrification consists in the biological oxidation aerobic process of ammoniacal nitrogen in a first step to nitrite and its oxidation to nitrate, carried out by autotrophic ammonia-oxidizing bacteria Nitrosomonas and nitrite-oxidizing Nitrobacterrespectively [18].

Microbial degradation is acceptable. Environmental Toxicology and Chemistry 31 6pp. View forum View forum without registering on UserVoice.

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In these systems, granular activated carbon, sand and clay are used as microbial support [1, ]. Participation is free and the site has a strict confidentiality policy.

ComparablePropertiesIn , Comparable Properties

The diameter of the zeolite used as microbial support was the one that corresponds to the best adherence results from the previous stage. In this nitrifiantes, the preferred zeolite particle size for the fluidized bed reactor was between 0. Nitrification at low levels of dissolved oxygen with and without organic loading in a suspended-growth reactor.

Manufacturing of the aerobic fluidized bed reactor [1].

Conclusions The optimum crushing and sieving times for the zeolite was determined to be 10 min and 8 min, respectively. As they affirmed, with higher COD Tentthe degradation efficiency is better.

Lechos nitrificantes | Spanish to English | Architecture

L -1 for an adequate nitrification [20]. Results are shown in Table 4.

These ions are naturally present in the aquatic environment as a result of atmospheric deposition, surface runoff and groundwater, dissolution of geological deposits rich lechoa nitrogen, biological decomposition of organic matter and nitrogen fixation by certain organisms [2]. Crushing and sieve analysis. After the adhesion test, the construction of the aerobic fluidized bed reactor based on the construction of Navarro and Palladino was performed using the zeolite of the most adequate diameter [1].

Biotechnology Bioeng 21, pp. The optimal size of the zeolite employed as a microbial support was determined by adhesion tests. Enviromental Health Perspectives 14pp.

Lechos nitrificantes

However, 1 mm is chosen to achieve higher adhesion values. It can be seen that there was an almost complete biodegradation of organic matter in all samples for the different diameters, being That made it useful to be included in fluidized bed reactors. Applied Geochemistry 27, pp. L -1 for an adequate nitrification [20]. FISH Handbook for biological wastewater treatment: These substances can interfere with the cell metabolism, reducing the rate of formation of intermediates compounds [32].

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The final 20 cm corresponded to an inverted truncated cone with a 20 cm diameter base Fig. The treatment system of liquid effluents designed by Navarro and Palladino was tested, changing the activated carbon by zeolite as a microbial support. Microbial adhesion For the microbial adhesion tests, assemble of 16 mini digesters were used with a volume of mL, for each one of the zeolite diameters Fig.

Tuning of the aerobic fluidized bed reactor As a general fact, one can conclude that the zeolite was a good support for microorganism population, in this case of nitrifying bacteria for the removal of nitrogen. Then the bacteria far away form interstitial spaces dissociated from the zeolite and, as a consequence, the TSS value increased while adhesion decreased.

Ammonium chloride is most often employed. Then the bacteria far away form interstitial spaces dissociated from the zeolite and, as a consequence, the TSS value increased while adhesion decreased.