Liquid purification or separation – Processes – Treatment by living organism
Patent
1985-11-08
1987-06-02
Castel, Benoit
Liquid purification or separation
Processes
Treatment by living organism
210614, 210747, 210170, 210 961, 210901, 48111, 48190, 48197A, 166246, 166250, 405129, 73 19, C02F 328, E21B 4322
Patent
active
046701486
ABSTRACT:
An apparatus and method for withdrawing gaseous decomposition products from a refuse dump. Disposed at various locations in the refuse are gas collection mechanisms, such as gas wells, drainage systems, etc., each of which is connected via a gas withdrawal line with a collector, from which the gas is withdrawn for further utilization. Disposed in each gas withdrawal line is a sensor and a regulatable shutoff device. The sensor transmits the content of a characteristic constituent of the gas flow in a given gas withdrawal line to a measuring and control unit, which monitors the gas flow volume as a function of a comparison of the sensor signals with preset threshold values. If the sensors indicate that the content of the characteristic constituent of the gas flow exceeds or drops below the preset threshold values, the measuring and control unit opens or closes the associated shutoff device by an appropriate amount.
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