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.

Author: Akik Tegal
Country: Belarus
Language: English (Spanish)
Genre: Life
Published (Last): 15 March 2013
Pages: 170
PDF File Size: 6.94 Mb
ePub File Size: 17.53 Mb
ISBN: 908-3-95101-470-3
Downloads: 50239
Price: Free* [*Free Regsitration Required]
Uploader: Akinolrajas

L -1 that was reached on the fourteenth day. First modification related to the employed nitrificxntes support lrchos. In the Table 6the nitrifiicantes which were measured after 21 days of operation. Environmental Pollutionpp. View forum View forum without registering on UserVoice. This increase is associated to the cryptic growth stage of the microorganisms natural cycle growth curvewhich takes place after the death phase. The whole experiment ran for three weeks.

However for the 0. The initial region of the adhesion increase, shown in Fig. Peer comments on this answer and responses from the answerer agree.

This was loaded onto the column to achieve a fixed bed height of 15 cm. In conclusion, operating with a feed rate of bitrificantes.

I Microbes that reproduce by fission or by budding. In response to the experience, a constant control of the reactor is required to achieve a good oxygenation. Navarro and Palladino proved the effectiveness of an aerobic fluidized bed reactor using as support: Adhesion tests were performed with nitrificantws zeolite extracted from each mini-reactor.

Post Your ideas for ProZ. Gabriela 4 KudoZ points were awarded for this answer. Finally, in the case of the zeolite with 1 mm diameter, VSS values showed a continuous fluctuation along the whole experiment time, with a minimum of mg. It is observed that the pH was kept nitrificntes along the experiment time for 1 and 2 mm diameter zeolite samples. In this work, we determine the optimal zeolite size for the correct physiological development of nitrifying bacteria to be used in a subsequent aerobic fluidized bed reactor to remove ammonia nitrogen existing in industrial wastewater.

  CANADIAN OCCUPATIONAL PERFORMANCE MEASURE COPM PDF

Lechos nitrificantes | Spanish to English | Architecture

The installation also had a 20 cm high pyramidal settler with a weir at the top for discharge of treated effluent and a bottom outlet for recycling. To determine the mass of the adhered solids the following expression can be applied: This result is in accordance with the adherence maximum observed for the same day. The final 20 cm corresponded to an inverted truncated cone with a 20 cm diameter base Fig.

On the twelfth day, VSS began to decrease to a minimum of mg. Further, TSS value increased to mg. To build the nitruficantes bed reactor, the design proposed by Navarro nnitrificantes Palladino, was used with some modifications.

You have native languages that can be verified You can request verification for native languages by completing a simple application that takes only a couple of minutes. In these systems, granular activated carbon, sand and clay are used as microbial support [1, ].

In this work, the zeolite used had a density of 2 g. United State of America, pp. A life cycle assessment perspective. This state corresponds with the maximum of the adhesion curves.

The feeding pump was connected to a timer to achieve the necessary inflow. Excess biomass can be removed by friction between particles or transported to a device where the biomass is separated from the particles; these are incorporated back into the bed [27]. Pozo-Antonio, received a Bs.

Lechos nitrificantes

The mini-reactors were inoculated with microorganisms nitrifying bacteria from an activated sludge plant, which was in a process of recovery. Ecological Applications 22 3pp.

This design was chosen in order to prevent particles escaping from the reactor. Once the mini-digesters were filled and the aeration pumps connected, the system was allowed to evolve for five days. Both side outlets with a 2. The pH value affects the environmental conditions for a favourable physiological development of microorganisms, and also has a great influence on nitrificantfs inhibition degree of the nitrifying bacteria.

  EL GRAN EXPERIMENTO DE KEINPLATZ PDF

In this work, the zeolite used had a density of 2 g. Conclusions The optimum crushing and sieving times for the zeolite was determined to be 10 min and 8 min, respectively. In the column, the lower part has the input of effluent lecos be treated and recycled effluent and the top part has the treated effluent outlet.

ComparablePropertiesIn , Comparable Properties

Widespread pollution produces problems such as toxic algae blooms that after intake through food or water can lead to various physiological disorders and symptoms of intoxication [], eutrophication [6,7], acidification of rivers and lakes with low or reduced alkalinity [], direct toxicity of nitrogenous compounds in aquatic animals [13] and adverse effects on human health [].

Mini-digesters were grouped in pairs, for each zeolite diameter. In these systems, feed and recycle rates must sustain the fluidization of the bed [1,21] and degradation of organic matter by micro-organisms on the surface of the particles [1, ]. There is not significant differences in the measured microbial adhesion for the three diameters 0.

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]. Applied Geochemistry 27, pp.

The reactor consisted of an acrylic column 10 cm in diameter and 1.