IP Library Granted Patent US 7,655,144
Granted Patent B2
US 7,655,144 · App. 12/165,821 · Granted Feb 2, 2010

Method for the treatment of wastewater

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Quick Facts
Patent No.
US 7,655,144
App. No.
12/165,821
Granted
Feb 2, 2010
Kind
B2
Abstract

A wastewater treatment system for treating wastewater by processes which include aeration. The system includes an influent conduit for delivery of wastewater to be processed and a treatment tank for processing of the wastewater. Also included is an air conduit for providing compressed air for aeration of the wastewater and a particle size regulation device disposed between the conduit and the tank, wherein the particle size regulation device regulates a size of particles present in the wastewater to provide particle size regulated wastewater. The system also includes at least one aeration jet having a nozzle diameter sized to allow the particle size regulated wastewater to pass through the nozzle.

Claims (17)

1. A method for selecting a size of a nozzle used for aeration in a wastewater treatment system for treating wastewater, comprising the steps of:

providing an influent conduit for delivery of wastewater to be processed;

providing a treatment tank for processing of said wastewater;

providing an air conduit for providing compressed air for aeration of said wastewater;

providing a particle size regulation device disposed between said conduit and said tank, wherein said particle size regulation device regulates a size of particles present in said wastewater to provide particle size regulated wastewater;

providing at least one aeration jet used for aeration of said wastewater, said at least one aeration jet having a nozzle diameter; and

selecting a nozzle diameter which allows said particle size regulated wastewater to pass through said nozzle.

2. A method according to claim 1 , wherein said diameter is less than approximately 1.5 inches.

3. A method according to claim 1 , wherein said diameter is less than approximately 1.0 inches.

4. A method according to claim 1 , wherein said particle size regulation device reduces a size of particles in said wastewater.

5. A method according to claim 1 , wherein said particle size regulation device removes particles above a threshold size from said wastewater.

6. A method according to claim 1 , wherein said particle size regulation device reduces a size of particles in said wastewater and removes particles above a threshold size from said wastewater.

7. A method according to claim 1 , wherein said particle size regulation device is a screen.

8. A method according to claim 1 , wherein said particle size regulation device regulates a size of particles present in said wastewater by shredding.

9. A method according to claim 1 , wherein said particle size regulation device regulates a size of particles present in said wastewater by mastication.

10. A method according to claim 1 , wherein said method includes a sequence batch reactor.

11. A method according to claim 1 , wherein said method includes a membrane bioreactor.

Assignments (8)
RELEASE OF SECURITY INTEREST Recorded May 26, 2023
From: JPMORGAN CHASE BANK N.A., AS COLLATERAL AGENT
To: EVOQUA WATER TECHNOLOGIES LLC; NEPTUNE BENSON, INC.
Reel/Frame 063787/0943 →
SECURITY INTEREST Recorded Apr 7, 2021
From: EVOQUA WATER TECHNOLOGIES LLC; NEPTUNE BENSON, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 055848/0689 →
RELEASE OF SECURITY INTEREST (REEL/FRAME 032126/0487) Recorded Apr 6, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: SIEMENS WATER TECHNOLOGIES LLC
Reel/Frame 055845/0245 →
RELEASE OF SECURITY INTEREST (REEL/FRAME 032126/0430) Recorded Apr 6, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: SIEMENS WATER TECHNOLOGIES LLC
Reel/Frame 055845/0311 →
CHANGE OF NAME Recorded Feb 7, 2014
From: SIEMENS WATER TECHNOLOGIES LLC
To: EVOQUA WATER TECHNOLOGIES LLC
Reel/Frame 032174/0282 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (SECOND LIEN) Recorded Jan 24, 2014
From: WTG HOLDINGS III CORP.; WTG HOLDINGS II CORP.; SIEMENS TREATED WATER OUTSOURCING CORP.; SIEMENS WATER TECHNOLOGIES LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 032126/0430 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (FIRST LIEN) Recorded Jan 24, 2014
From: WTG HOLDINGS III CORP.; WTG HOLDINGS II CORP.; SIEMENS TREATED WATER OUTSOURCING CORP.; SIEMENS WATER TECHNOLOGIES LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 032126/0487 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 1, 2014
From: SIEMENS INDUSTRY, INC.
To: SIEMENS WATER TECHNOLOGIES LLC
Reel/Frame 031896/0256 →