Listing ID #3900279
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Contact SupplierALPHA CHEM-1310 Â Anaerobic Digester
Anaerobic
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Digester is comprised of two 1.3 gallon upward flow packed bed reactors, with feed rate and  Temperature controls to allow steady, continuous operation at up to 1.1 gallons per day.
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The reactors may be operated in series or parallel. A buffer vessel between the reactors permits discharge of excess flow from the first reactor when the second reactor is operated in series, but at a lower flow rate.
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The flow rates to the vessels are set and controlled by peristaltic pumps. The Temperature of each reactor is controlled by an electric heating tape wrapped around the external wall.
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The temperature distribution within each reactor is maintained to ±1°F. Reactor temperatures may be separately set at any desired value in the range ambient to 131°F.
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The gas off-take from each reactor is taken to a volumetrically calibrated collector vessel operating by water displacement. A constant head, liquid seal device ensures that the gas pressure in the reactor is maintained at a constant value throughout the test run.
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The collected gas can be exhausted from the vessel and the volume refilled with water during a run, without breaking the liquid seal. Liquid and gas sampling points are located at all strategic points around the reactors.
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Technical Specifications :
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Reactors
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Two identical reactors—nominal capacity, 1.3 gal.; packed volume, 1.1 gal.; 6.25" ID diameter by 10" high.
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Reactor packingÂ
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1" diameter bio-balls.
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Temperature control
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For each reactor—836W heating jacket with PID control from a temperature sensor positioned inside the reactor, set point within range ambient to 131°F; the jacket is thermostatically protected by a cutout set at 185°F.
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pH Meter
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Range: 0.00 - 14.00
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Feed pumps
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Two identical peristaltic pumps—variable speed using a potentiometer to 12 rpm, with flow rates from 0.04 to 1.1 gal. per day.
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Gas collection vessels
Two identical—linear scale, 0–1.3 gal. capacity