Method and system for filtration of wastewater
AssigneeTetra Process Technologies Seven Trent Services Company
InventorsJoseph M. Bonazza, Donald J. McCarty, Navin Kadakia, David C. Slack
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Abstract
A system (10) comprising multiple units (40a-40h) and method for filtration of wastewater (20) is disclosed. Simultaneous denitrification of a single filter unit and normal filtration of the remaining filter units is provided for. Separate flow control systems (36) are described.
Claims25
A method for filtration of wastewater within a filtration system comprising multiple filter units, the method comprising:
- a. operating fewer than all units within the filtration system in a filtration-only mode;
- and
- b. simultaneously operating the remaining units in a denitrification mode.
A method for filtration of wastewater within a filtration system comprising multiple filter units, the method comprising:
- a. selecting one or more filter units to operate in a denitrification mode;
- b. pumping a carbon source to the one or more filter units selected in step (a);
- c. operating the filter units selected in step (a) in denitrification mode until a desired NOx—N level is attained;
- and
- d. operating the remaining filter units in a filtration-only mode.
A method for filtration of wastewater within a filtration system comprising multiple filter units, the method comprising:
- a. selecting one or more filter units to operate in a denitrification mode, each filter unit of the filtration system comprising a separate influent flow conduit;
- b. charging a carbon source to each influent flow entering the filter units selected in step (a);
- c. operating the filter units selected in step (a) in denitrification mode until a desired NOX—N level is attained;
- and
- d. operating the remaining filter units in a filtration-only mode.
A method for filtration of wastewater within a multi-mode filtration system comprising multiple filter units, the method comprising:
- a. selecting one or more filter units to operate in a denitrification mode;
- b. adjusting the influent flow rate of the one or more filter units selected in step (a) for denitrification operation;
- c. pumping a carbon source to the one or more filter units selected in step (a);
- d. operating the remaining filter units in a filtration-only mode;
- and
- e. operating the filter units selected in step (a) in denitrification mode until a desired NOx—N level is attained.
A method for filtration of wastewater within a multi-mode filtration system comprising multiple filter units, the method comprising:
- a. selecting one or more filter units to operate in a denitrification mode;
- b. adjusting the influent flow rate of the one or more filter units selected in step (a) for denitrification operation;
- c. pumping a carbon source to the one or more filter units selected in step (a);
- d. adjusting the influent flow rate for the filter units in the filtration-only mode;
- e. operating the filter units selected in step (a) in denitrification mode until a desired NOx—N level is attained;
- and
- f. operating the remaining filter units in a filtration-only mode.
A multi-mode filtration system comprising:
- two or more filter units, each unit capable of operating in either a filtration mode or a denitrification mode;
- each filter unit of the two or more filter units comprising a separate influent flow and a separate flow control system;
- and
- a carbon source pump and piping for directing the carbon source to the two or more filter units as needed, the piping including a separate feed pipe for each filter unit so that the carbon source is fed only to the filter units selected for operating in the denitrification mode.
A multi-mode filtration system comprising multiple filter units, the method comprising:
- two or more filter units capable of operating in either filtration mode or denitrification mode;
- each filter unit of the two or more filter units comprising a separate influent flow;
- each filter unit comprising a valve control system for regulating the influent flow to the filter unit;
- and
- a carbon source pump and piping capable of directing the carbon source directly to any one unit of the two or more filter units.
Dependencies are inferred from the claim text.