Purification device
First Claim
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1. A purification device for purifying a fluid and concentrating impurities and contaminants removed from the fluid, comprising:
- means for purifying a fluid containing impurities and contaminants, purifying means including mechanical purifying means and membranous purifying means;
the mechanical purifying means and membranous purifying means operatively associated with at least one retaining means for separating and concentrating contaminants;
one membranous purifying means including a microporous membrane, another membranous purifying means including a reverse osmosis membrane, a retaining means intermediate the one membranous purifying means and the other membranous purifying means;
the mechanical purifying means and membranous purifying means in operative communication with one retaining means;
another retaining means in operative communication with the membranous purifying means to concentrate impurities and to return a portion of its volume to the membranous purifying means;
a waste retaining means in operative communication with the other retaining means; and
the other membranous purifying means in operative communication with a processed fluid retaining means.
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Accused Products
Abstract
A liquid filtering and purifying device and method for filtering and purifying used engine coolant in order to produce a concentrated portion for disposal and a purified portion intended to be reused has a plurality of filtering, separating and purifying devices, both mechanical and membranous. The purification device and method of this invention provide for multiple recirculation for removing and concentrating impurities and contaminants.
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Citations
20 Claims
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1. A purification device for purifying a fluid and concentrating impurities and contaminants removed from the fluid, comprising:
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means for purifying a fluid containing impurities and contaminants, purifying means including mechanical purifying means and membranous purifying means; the mechanical purifying means and membranous purifying means operatively associated with at least one retaining means for separating and concentrating contaminants; one membranous purifying means including a microporous membrane, another membranous purifying means including a reverse osmosis membrane, a retaining means intermediate the one membranous purifying means and the other membranous purifying means; the mechanical purifying means and membranous purifying means in operative communication with one retaining means; another retaining means in operative communication with the membranous purifying means to concentrate impurities and to return a portion of its volume to the membranous purifying means; a waste retaining means in operative communication with the other retaining means; and the other membranous purifying means in operative communication with a processed fluid retaining means. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A purification device for purifying a fluid and concentrating impurities and contaminants removed from the fluid as set forth in clim 1 wherein purification means include:
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a microporous membrane that separates a portion of suspended solids from a feed stream based upon a distribution of particle sizes in a known size range; and a reverse osmosis membrane for separating solutes or dissolved solids as is suitable from the respective feed stream based upon a relative transport rate through the membrane or skin as a function of solubility of the dissolved solids and solvent in the film.
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8. A purification device for purifying a fluid, comprising:
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meams for retaining a quantity of a contaminated fluid feed stream to be purified; means for providing first stage purification in operative communication with an outlet operatively associated with contaminated fluid retaining means; means for providing second stage purification in operative communication with the fluid output from first stage purification means; means for retaining the fluid output from second stage purification means, fluid output retaining means in operative communication with the fluid output from second stage purification means; means for providing reverse osmosis separation, reverse osmosis separation means in operative communication with an outlet operatively associated with second stage purification means fluid output retaining means, reverse osmosis separating means providing a subsequent permeate as a relatively purified fluid output and a subsequent concentrate fluid output; and means for retaining reverse osmosis concentrate, reverse osmosis concentrate fluid retaining means in operative communication with concentrate fluid output. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for purifying a fluid and concentrating impurities and contaminants removed by the purifying method, comprising the steps of:
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retaining a quantity of a contaminated fluid feed stream of be purified; transferring a portion of the contaminated fluid feed stream to first purifying means; purifying the fluid feed stream portion with first purifying means; transferring the purified fluid portion from first purifying means to second purifying means; purifying the transferred feed stream portion with second purifying means; transferring the purified portion from second purifying means to the second retaining means; recirculating the concentrate back to second purifying means; transferring the fluid from second retaining means to third purifying means; purifying the feed stream with third purifying means; concentrating the impurities and contaminants removed by third purifying means in the second retaining means; transferring the purified portion to purified retaining means; and recirculating a portion back to third purifying means from the concentrate retaining means. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification