Water purifier

A batch feed water purifier for providing pure water having a resistivity of up to 18.3 megohm-cm and a total carbon content of up to 10 parts per billion .by circulating feed water and recirculating the pure water through a multilayer water purification media and a tank storing the pure water, said batch feed water purifier including a housing means containing the multilayer water purification media, the multilayer water purification media comprising:

• a first layer of a mixture in fluid communication with the tank and including at least two 20.times.50 mesh, acid washed, granular activated carbons;
• a successive second layer of mixed bed semiconductor grade resin comprising a strong acid cation resin and a strong base anion resin;
• a successive third layer of a synthetic bead activated carbon;
• a successive fourth layer producing the pure water and comprising a mixture including a synthetic bead activated carbon and a mixed bed semiconductor grade resin having a strong acid cation resin and a strong based anion resin.

A batch feed water purifier connected to feed water for providing pure water having a resistivity of up to 18.3 megohm-cm and a total organic carbon content of up to 10 parts per billion comprising:

• a tank having an inlet for receiving the feed water and the tank storing the pure water;
• a first multilayer purification cartridge having an inlet in fluid communication with the tank, the first multilayer purification cartridge containing
• a first layer of purification media comprising approximately 0.0055 cubic feet of a mix of approximately 50 percent by volume of an acid washed metallurgical grade bituminous carbon and approximately 50 percent by volume of a coconut shell carbon, and
• a successive second layer of purification media comprising approximately 0.0109 cubic feet of a mixed bed semiconductor grade resin including approximately 40% strong acid cation resin and approximately 60% strong base anion resin;
• a second multilayer purification cartridge having an inlet connected to an outlet of the first multilayer purification cartridge, the second multilayer purification cartridge including an outlet in fluid communication with the tank, the second multilayer purification cartridge including
• a successive third layer of purification media comprising approximately 0.0055 cubic feet of a 20.times.50 mesh of an acid washed granular activated carbon,
• a successive fourth layer of purification media comprising approximately 0.0109 cubic feet of a mixed bed of semiconductor grade resin including approximately 40% strong acid cation resin and approximately 60% strong base anion resin,
• a successive fifth layer of purification media comprising approximately 0.0025 cubic feet of synthetic bead activated carbon, and
• a successive sixth layer of purification media comprising approximately 0.0057 cubic feet of a mixture including 10% synthetic bead activated carbon and 90% of a mixed bed of semiconductor grade resin including approximately 40% strong acid cation resin and approximately 60% strong base anion resin;
• a pump connected between the tank and the first multilayer purification cartridge for circulating the feed water and recirculating the pure water through the first and the second multilayer purification cartridges and the tank;
• and
• a filter in fluid communication with the outlet of the second multilayer purification cartridge, the filter having an approximately 0.2 micron pore size;
• and
• a manually actuated valve connected with the filter and the outlet of the second purification cartridge for controlling the discharge of the pure water from the water purifier.