US 7,060,186 B2Granted

Method and apparatus for the treatment of wastewater

OwnerJohn L. Peteringinventor

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Abstract

A batch process and apparatus for treating wastewater in a system employing anaerobic and aerobic zone reaction vessels under elevated pressure is disclosed in which an amount of processed activated sludge material is charged into an aerobic zone and wastewater to be processed from an inlet supply charge system is used to fill one or more aerobic zones. The charge system is pressurized by introducing high pressure air which is continuously infused and the material is circulated among anaerobic and aerobic zones as a multi-phase bubble flow while venting an amount of circulated air of lower oxygen content through a vapor release system. After treatment, the system pressure is reduced over a timed interval through the vapor release system, and the treated batch is discharged to an effluent storage system for separation of treated water and sludge.

Claims20

Dependent claims

A batch process for treating wastewater in a wastewater treatment system employing anaerobic and aerobic zone reaction vessels under elevated pressure comprising steps of:

(a) introducing an amount of processed activated sludge material from a source of stored activated sludge into an anaerobic zone of a wastewater treatment system;
(b) introducing a batch of wastewater to be processed from an inlet supply charge system into the wastewater treatment system including into one or more aerobic zones to provide a charged system;
(c) closing the inlet supply and pressurizing the charged system by introducing ambient air at high pressure and continuously infusing air and circulating material being treated among anaerobic and aerobic zones as a multiphase bubble flow, and venting an amount of circulated air of reduced oxygen content through a vapor release system thereby controlling system pressure and wherein said material being treated is circulated through said one or more aerobic zones and periodically further circulated through one or more anaerobic zones;
(d) after said material being treated is processed reducing pressure throughout said water treatment system, over a timed interval through said vapor release system;
and
(e) discharging said batch of wastewater as a treated batch to an effluent storage system for separation of treated water and sludge.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/896,696Filed 22 Jul 2004 · us provisional application
Priority: 24 Jul 2003
Published: US 2005/0056588 A117 Mar 2005
Granted: 13 Jun 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

C02F 3/302
Aerobic and anaerobic processes: nitrification and denitrification treatment
C02F 3/30
Biological treatment of water, waste water, or sewage: aerobic and anaerobic processes
C02F 2209/03
Controlling or monitoring parameters in water treatment: pressure
Y10S 210/903
Materials removed: nitrogenous