| US 7,572,369 B2 | ||
| System for supporting denitrification | ||
| Michael T. Gallagher, Highland Park, Ill. (US); and James Banaszak, Arlington Heights, Ill. (US) | ||
| Assigned to OpenCEL LLC, Glencoe, Ill. (US) | ||
| Filed on Jan. 18, 2008, as Appl. No. 12/16,746. | ||
| Claims priority of provisional application 60/890383, filed on Feb. 16, 2007. | ||
| Prior Publication US 2008/0197074 A1, Aug. 21, 2008 | ||
| Int. Cl. C02F 1/461 (2006.01) | ||
| U.S. Cl. 210—192 [204/660; 204/665; 210/195.1; 210/205; 210/903] | 9 Claims |
| 1. A wastewater treatment system, comprising:
a treatment station including an anoxic bioreactor in which denitrification is performed on a wastewater having a nitrate
concentration with a supply of electron donor and carbon;
a pulsed electric field station comprising an inlet adapted to receive biological material, a treatment chamber through which
biological material received via the inlet passes and including at least two spaced electrodes between which is generated
a pulsed electric field and which define at least one treatment zone therebetween, and an outlet adapted to pass treated biological
material, the pulsed electric field station generating a non-arcing pulsed electric field with pulses that have a pulse width
of 2 to 15 microseconds, a peak field strength of 20 to 60 kV/cm and a frequency of 2,000 to 10,000; and
a transport system coupled to the outlet of the pulsed electric field station and the anoxic bioreactor to provide treated
biological material to the anoxic bioreactor in substitution, at least in part, for an external source of electron donor and
carbon, to decrease said nitrate concentration.
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