Backwash reclamation method
OwnerStanton Jeffery Mullisinventor
Life of this patent
Estimating the term…
Abstract
A method for reclaiming and reusing a substantial portion of the waste water creating during the backwashing of a pool filter. The system uses a separate floating debris filter to remove solids before pumping the waste water into a sediment retention tank. The waste water is stored in the sediment retention tank for about a day, during which time the suspended solids settle to the bottom. The water in the sediment retention tank is then pumped back into the circulating pool system.
Claims19
A method for reusing backwash water in a circulating pool filtration system, comprising:
- a. providing a pump having a pump intake line and a pump discharge line;
- b. providing a sand filter having a discharge line and a backwash line;
- c. providing a sediment retention tank;
- d. starting a backwash cycle in which flow in said sand filter is reversed and water forced through said sand filter by said pump flows out through said backwash line;
- e. routing said water flowing out through said backwash line to said sediment retention tank;
- f. stopping said backwash cycle after said retention tank is substantially full;
- g. starting a filtration cycle wherein water is forced through said sand filter by said pump and flows out through said discharge line;
- h. allowing said water in said sediment retention tank to stand for a time sufficient to allow sediment within said water to settle to the bottom of said sediment retention tank;
- i. providing a tank line in said sediment retention tank, said tank line having a tank line intake positioned to avoid said sediment in said bottom of said sediment retention tank and said tank line intake having an opening which is substantially upward facing;
- j. connecting said tank line to said pump intake line;
- and
- k. drawing said water within said sediment retention tank into said pump and back into said circulating pool filtration system.
A method for reusing backwash water in a circulating pool filtration system, comprising:
- a. providing a sand filter having a backwash line and a pump discharge line;
- b. providing a sediment retention tank;
- c. starting a backwash cycle in which flow in said sand filter is reversed and water forced through said sand filter flows out through said backwash line;
- d. routing said water flowing out through said backwash line to said sediment retention tank until said retention tank is substantially full;
- e. starting a filtration cycle wherein water is forced through said sand filter and flows out through said discharge line;
- f. allowing said water in said sediment retention tank to stand for a time sufficient to allow sediment within said water to settle to the bottom of said sediment retention tank and water to remain in the rest of said sediment retention tank;
- and
- g. removing said water remaining in the rest of said sediment retention tank without removing a significant amount of said sediment and introducing said removed water back into said circulating pool filtration system.
Dependencies are inferred from the claim text.