 Filter system |
| The invention is a filter system having filter material, e.g., absorbent material, to treat liquid ... |
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| Floor drain odor control device |
| The floor drain odor control device of the present invention removably inserts into standard floor ... |
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| Plastic self-relieving curb inlet filter |
| OF THE PREFERRED EMBODIMENTS Two of the preferred embodiment of the invention are projected from ... |
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| Storm drain systems for filtering trash and hydrocarbons |
| The system includes the use of a quantity of appropriately formed bodies comprising copolymer-... |
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| Steam pan manipulation device |
| OF THE PREFERRED EMBODIMENTS Referring now to FIG. 1 of the drawings, a conventional steam pan 10 ... |
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| Curb-inlet storm drain systems for filtering trash and hydrocarbons |
| The system includes the use of a quantity of appropriately formed fragments comprising copolymer-... |
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| Trash collector for exfiltration drain system |
| It is one of the main objects of the present invention to provide a trash collector for drain ... |
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| Drain filter support |
| The invention is a modification to the known DRAIN DIAPER.RTM. drain filter to enable the filter to ... |
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| Curb-inlet storm drain systems for filtering trash and hydrocarbons |
| The system includes the use of a quantity of appropriately formed fragments comprising copolymer-... |
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| Drain basin filter insert system |
| The contaminant-absorbing catch basin filter insert system of this invention provides an improved ... |
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Bleed-off elimination system and method
| Details |
Inventors: Littmann, Robert J.;
Assignee: Waterscience, Inc. (Somerville, NJ)
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:
A heat exchange system and process for reducing bleed-off are disclosed employing a weak acid cation exchange resin for treating the aqueous liquid coolant. In one such system and process, the aqueous coolant is treated with a weak acid ion exchange resin to remove alkaline salts therefrom without removing salts of strong acids; suspended solids are removed from the circulating aqueous coolant; and an effective amount of additive selected from the group consisting of scale inhibitors, corrosion inhibitors, microbiocides, and mixtures thereof is introduced into the circulating aqueous coolant so that bleed-off from said system is substantially reduced. |
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DETAILED DESCRIPTION It has now been discovered that a very economical and ecologically advantageous process and heat exchange system can be used to avoid many of the disadvantages of the above discussed processes and systems.
The new process and system reduces bleed-off in open circulating heat exchange systems having circulating aqueous coolant by (1) treating the aqueous coolant with a weak acid cation exchange resin to remove alkaline salts therefrom without removing salts of strong acids; (2) removing suspended solids from the circulating aqueous coolant; and (3) introducing an effective amount of additive selected from the group consisting of scale inhibitors, corrosion inhibitors, microbiocides, and mixtures thereof into the circulating aqueous coolant so that, by the combination of steps (1), (2) and (3), the amount of bleed-off from said system is at most 66% of the bleed-off necessary in the same system without such combination of steps.
Preferably, the scale inhibitors, corrosion inhibitors, and microbiocides are introduced in amounts effective so as to maintain a concentration of from about 2 to about 1000 ppm.
of scale inhibitors, of from about 2 to about 1000 ppm.
of corrosion inhibitors, and of from about 2 to about 1000 ppm.
of microbiocides.
In another embodiment, an effective amount of additive selected from the group consisting of scale inhibitors, corrosion inhibitors, microbiocides and mixtures thereof is introduced into the circulating aqueous coolant so that, by combination of steps (1), (2) and (3), bleed-off from said system is reduced to substantially zero.
The invention also contemplates a process and system for reducing bleed-off from a boiler by treating water with a weak acid cation exchange resin to remove alkaline salts therefrom without removing salts of strong acids to provide treated water; and contacting the treated water in heat exchange relationship to a boiler to absorb heat therefrom and provide heated boiler water.
The system and process of the present invention have a number of significant advantages over the prior art systems and processes discussed above
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Liquid Purification 
