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Water treatment by bacterial culture on a fixed bed in anaerobic medium


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Service : 220 V single phase - 50 Hz - 0.8 kW
sewers
water to be treated
Dimensions : approx. 2800 x 800 x 1900 mm.
Weight : 250

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DEMANDER UN DEVIS POUR CETTE MACHINE

The principle of operation of a bacterial bed consists of making the water to be treated, previously decanted or at least well sieved, run off over a mass of material (natural or plastic) serving as a support for the purifying microorganisms which form a bio therein. thick film.



Educational Objectives :

- The hydrodynamic study of a liquid-solid fluidized bed
- Mode of operation of a bacterial bed
- The study of influencing quantities: flow, mass and surface load of the trickling filter

Technical specifications :

Fixed microorganisms eliminate organic matter by absorption of soluble and suspended constituents. As the microorganisms grow, the film thickness increases and there is an aerobic and then anaerobic two-layer film. In this second part, the endogenous mechanisms and the gases produced lead to local detachments of the biofilm which release areas available for a new colonization. This phenomenon of detachment of the biofilm or "self-cleaning" is essentially a function of the organic and hydraulic loads applied to the filter.
The oxygen necessary for aerobic metabolism is supplied by natural draft or by forced ventilation.
The liquid collected at the outlet of the film feeds a secondary settling tank in which the sludge produced is separated from the treated water. Part of the collected liquid is frequently recycled to the head of the bacterial bed to dilute the influent and ensure sufficient wetting of the biofilm. Main biological purification process in the 1950s, trickling filters have a number of advantages over activated sludge
- less monitoring;
- significant energy savings (no air blowing);
- fairly rapid "recovery" after a toxic shock;

The driver consists of:

  • Wastewater supply tank, with agitation,
  • Sewage feed pipe to the PVC reactor,
  • Reagent supply line to the PVC reactor,
  • Cylindrical column type methanization reactor, sampling valves along the length of the column,
  • Plastic lining to support the trickling filter,
  • Secondary settling tank for sludge recycling with overflow,
  • Water recovery tank after treatment
  • Air compressor,
  • pumps, variable flow
  • Air flow meter,
  • flowmeters: for supply and for recycling,
  • Stainless steel 304L welded frame with 4 castors, 2 of which are equipped with brakes.
  • Electrical control cabinet including M / A commands, pump protections, emergency stop, displays and general switch
Options :
- Data acquisition via a 10 '' touch screen, visualization of the system mimic curves, stirring speed and feed and recycling flow. Data recovery by USB in .txt format.
- Scraper in the decanter
DEMANDER UN DEVIS POUR CETTE MACHINE

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