Multi-domain electrostatic filter

A multi-domain electrostatic filter system comprising:

• a multi-domain electrostatic filter having an electrically conductive filter vessel and a removable multi-domain electrostatic filter cartridge;
• a voltage generator;
• a pump;
• and
• a controller coupled to the voltage generator and the pump, the controller being configured to cause the pump to pump fluid through the multi-domain electrostatic filter and to cause the voltage generator to supply voltage direct current (DC) electrical energy to the multi-domain electrostatic filter,
• wherein the removable multi-domain electrostatic filter cartridge comprises a plurality of positive electrode plates and a plurality of negative electrode plates arranged in an alternating sequence, with each pair of positive electrode plates and negative electrode plates being separated by a respective filter media member,
• wherein the positive electrode plates are electrically connected to each other, to the electrically conductive filter vessel, and, in turn, to an electrical ground,
• wherein the negative electrode plates are electrically connected to each other and to a voltage supply coupled to an output of the voltage generator,
• wherein the plurality of negative electrode plates of the multi-domain electrostatic filter cartridge are movable from a first position when the multi-domain electrostatic filter cartridge is not engaged with the electrically conductive filter vessel to a second position when the multi-domain electrostatic filter cartridge is engaged with the electrically conductive filter vessel, and
• wherein when the plurality of negative electrode plates is in the second position, a multi-domain configuration is provided that includes a first domain having a first distance between a first negative electrode plate and a first positive electrode plate disposed below the first negative electrode plate, and a second domain having a second distance between the first negative electrode plate and a second positive electrode plate disposed above the first negative electrode plate, wherein the first domain comprises the first negative electrode plate, the first positive electrode plate, and a first filter medium located in between the first negative electrode plate and the first positive electrode plate, and the second domain comprises the first negative electrode plate, the second positive electrode plate, and a second filter medium located in between the first negative electrode plate and the second positive electrode plate, and wherein the first distance is different from the second distance and the difference between the first distance and the second distance creates alternating compressed densities of filter media disposed between respective pairs of positive electrode plates and negative electrode plates.