WATER DISINFECTION DEVICES AND METHODS
Water disinfection devices and methods are disclosed. In general, one aspect disclosed features an apparatus comprising: a power source configured to supply power to at least two planar electrodes enclosed in a water filtering apparatus, wherein the power source is configured to provide a fixed voltage to the at least two planar electrodes.
1 . An apparatus comprising:
a power source configured to supply power to at least two planar electrodes enclosed in a water filtering apparatus, wherein the power source is configured to provide a fixed voltage to the at least two planar electrodes.
2 . The apparatus of claim 1 , wherein:
the power source is configured to limit current to the at least two planar electrodes to be below a current limit threshold.
3 . The apparatus of claim 2 , wherein:
the power source is configured to fix the current at the current limit threshold responsive to the current reaching the current limit threshold.
4 . The apparatus of claim 1 , wherein:
a first one of the planar electrodes is of a first material; and
a second one of the planar electrodes is of a second material;
wherein the first material is different from the second material.
5 . An apparatus comprising:
a power source configured to supply power to at least two planar electrodes enclosed in a water filtering apparatus, wherein the power source is configured to provide a constant current to the at least two planar electrodes.
6 . An apparatus comprising:
a power source configured to supply power to at least two planar electrodes enclosed in a water filtering apparatus, wherein the power source is configured to provide a periodic voltage waveform between the at least two planar electrodes.
7 . The apparatus of claim 6 , wherein:
a first one of the planar electrodes is of a first material; and
a second one of the planar electrodes is of a second material;
wherein the first material is different from the second material.
8 . The apparatus of claim 7 , wherein:
the first material is copper; and
the second material is stainless steel.
9 . The apparatus of claim 7 , wherein:
the first material is copper; and
the second material is carbon felt.
10 . The apparatus of claim 6 , wherein:
the periodic voltage waveform is one of:
a square waveform,
a sine waveform,
a triangular waveform, or
a pulse train.
11 . The apparatus of claim 7 , wherein:
the periodic voltage waveform has one of:
a zero average voltage component,
a positive average voltage component, or
no negative voltage component.
12 . The apparatus of claim 6 , wherein:
the at least two planar electrodes are of the same material.
13 . The apparatus of claim 7 , wherein:
the first material is graphite;
the second material is copper or graphite; and
the power source provides a first voltage to the first one of the planar electrodes and a second voltage to the second one of the planar electrodes, wherein the first voltage has a positive polarity with respect to the second voltage.
14 . A method for operating an apparatus comprising a power source and a water filtering module comprising at least two planar electrodes arranged in parallel, the method comprising:
supplying power from the power source to the at least two planar electrodes, wherein the power provides a periodic voltage waveform between the at least two porous planar electrodes; and
directing water through the at least two planar electrodes and the at least one planar separator.
15 . The method of claim 14 , wherein supplying power further comprises:
limiting current to the at least two planar electrodes to be below a current limit threshold.
16 . The method of claim 15 , wherein supplying power further comprises:
fixing the current at the current limit threshold responsive to the current reaching the current limit threshold.
17 . The method of claim 14 , wherein supplying power further comprises:
providing a constant current to the at least two planar electrodes.
18 . The method of claim 14 , wherein:
the periodic voltage waveform is one of:
a square waveform,
a sine waveform,
a triangular waveform, or
a pulse train.
19 . The method of claim 18 , wherein:
the periodic voltage waveform has one of:
a zero DC voltage component,
a positive DC voltage component, or
no negative voltage component.