US 6,270,664 B1Granted

Water treatment system

OwnerYigal Tsabariinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

An apparatus for treatment of water comprising a first compartment containing a filtration unit for receiving untreated water, a second compartment containing polyphosphates, a housing containing the first compartment and the second compartment, and a polyphosphate dosing unit comprising a partition between said first compartment and said second compartment, an inlet tube, affixed to the partition, allowing a small portion of water filtered in the first compartment to flow into the second compartment containing polyphosphates, an outlet tube, affixed to the partition, from which the flow of polyphosphate-containing water is drawn out of the second compartment by the Venturi effect, wherein the filtration unit in the first compartment produces filtered water, the major portion of which, other than said small portion of water flowing into said second compartment, being discharged without contacting polyphosphates, such that the amount of polyphosphate distributed in the water is substantially proportional to the amount of said filtered water.

Claims12

Dependent claims

Apparatus for treatment of water comprising:

(a) a first compartment containing a filtration unit for receiving untreated water;
(b) a second compartment containing polyphosphates;
(c) a housing containing said first compartment and said second compartment;
(d) a polyphosphate dosing unit comprising:
(i) a partition between said first compartment and said second compartment;
(ii) at least one inlet tube, affixed to said partition, allowing a small portion of water filtered in said first compartment to flow into said second compartment containing polyphosphates;
(iii) at least one outlet tube, affixed to said partition, from which flow of polyphosphate-containing water is drawn out of said second compartment;
wherein:
A. said filtration unit in said first compartment produces filtered water, the major portion of said filtered water, other than said small portion of water flowing into said second compartment, being discharged without contacting polyphosphates;
B. said flow of polyphosphate-containing water is withdrawn from said second compartment through said at least one outlet tube by the flow of said major portion of said filtered water creating a low pressure zone, such that the amount of polyphosphate distributed in the water is substantially proportional to the amount of said filtered water.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/427,613Filed 27 Oct 1999
Priority: IL 12677527 Oct 1998
Granted: 7 Aug 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

C02F 1/688
Devices for dosing the additives: devices in which the water progressively dissolves a solid compound
B01F 21/22
Using flow mixing: using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles
B01F 25/316
In conduits or tubes through which the main component flows: with containers for additional components fixed to the conduit
C02F 5/14
Using organic substances: containing phosphorus