Volatile fatty acid control
AssigneeEcolab USA Inc.
InventorHerman Mark Grimm
Life of this patent
Estimating the term…
Abstract
A method of controlling a volatile fatty acid in an aqueous industrial system is provided in the present disclosure. The method includes determining a level of dissolved oxygen in process water in the aqueous industrial system and adding an effective amount of a control agent to the process water if the determined level of dissolved oxygen is above a predetermined level. The compositions and methods can lower the amount of VFA present in the aqueous industrial system.
Claims20
A method of reducing a volatile fatty acid in an aqueous industrial system, comprising:
- determining a level of dissolved oxygen in process water in the aqueous industrial system with a dissolved oxygen sensor;
- and
- adding an effective amount of a control agent to the process water, thereby reducing the level of dissolved oxygen in the process water, and reducing a concentration of a volatile fatty acid in the process water,
- wherein the level of dissolved oxygen in the process water is measured before, during, and after adding the control agent, and
- wherein the control agent is selected from the group consisting of a biocide, sodium bisulfite, a carbamate, and any combination thereof.
A method of monitoring and reducing volatile fatty acid content in process water comprising:
- (a) providing a monitoring and controlling unit comprising a controller and a dissolved oxygen sensor in communication with the controller, wherein the dissolved oxygen sensor is operable to measure dissolved oxygen of the process water;
- (b) providing a chemical injection pump, which is in communication with the controller;
- (c) providing a delivery conduit having a first end submerged in the process water and a second end connected to an inlet of the monitoring and controlling unit;
- (d) delivering a sample of the process water through the delivery conduit into the monitoring and controlling unit;
- (e) measuring the dissolved oxygen of the sample of the process water with the dissolved oxygen sensor;
- and
- (f) adding an effective amount of a control agent into the process water from the chemical injection pump, the control agent thereby reducing the dissolved oxygen in the process water, and reducing the volatile fatty acid content in the process water.
A method of reducing a volatile fatty acid in an aqueous industrial system, comprising:
- determining conductivity of process water in the aqueous industrial system;
- adding an effective amount of a control agent to the process water, thereby reducing the conductivity in the process water, and reducing a concentration of a volatile fatty acid in the process water,
- wherein the conductivity in the process water is measured before, during, and after adding the control agent, and
- wherein the control agent is selected from the group consisting of a biocide, sodium bisulfite, a carbamate, and any combination thereof.
Dependencies are inferred from the claim text.