Water retrieval from aqueous mixture of organic phosphates
AssigneeNiagara Mohawk Power Corporation
InventorCarey M. Merritt
Life of this patent
Estimating the term…
Abstract
Process and apparatus for separating aryl phosphates and esters and hydrolysates thereof from water in an aqueous mixture thereof. A superposed layer of the mixture is decanted from a lower layer of the phosphates, esters and hydrolysates. The superposed layer is filtered with a filter having a pore size of between 1 micron and 25 microns to remove globules and solid particles. The effluent is then subjected to demineralization with an anion exchange resin to remove most of the hydrolysates. Thereafter a sorber composed of an organic polymeric material such as polypropylene removes any remaining phosphates and esters down to less than 250 ppb.
Claims30
The process of separating aryl phosphates and esters and hydrolysates thereof from water in an aqueous mixture thereof comprising,
- forming a superposed layer from said mixture of said phosphates, esters and hydrolysates, and water and a lower layer of primarily said esters and phosphates,
- removing said lower layer of said esters and phosphates to isolate said upper or superposed layer of said mixture, filtering said layer of said mixture with a filter having a pore size of between 1 micron to about 25 microns,
- subjecting the effluent from said filtering to demineralization with an anion exchange resin,
- thereafter subjecting the effluent from said demineralization to a sorber composed of organic polymeric material to produce an effluent consisting essentially of water substantially without said phosphates, esters or hydrolysates thereof.
The process of removing water from an aqueous mixture of aryl phosphates and esters and hydrolysates thereof comprising,
- filtering said mixture with a filter having a pore size of between 1 micron to about 25 microns,
- demineralizing the effluent from said filtering with an anion exchange resin,
- sorbing remaining said phosphates and esters and hydrolysates from the effluent from said demineralizing with an organic polymeric material sorber, and
- collecting substantially clean water from said sorbing step.
An apparatus for removing water from an aqueous mixture of aryl phosphates and esters and hydrolysates thereof comprising, in the following succession,
- decanting means to remove said aqueous mixture from any separate layer of said phosphates and esters and hydrolysates,
- filter means having a pore size of between about 1 micron to 25 microns for filtering said mixture,
- a demineralizer fluidly connected to said filter means to remove hydrolysates, from said mixture following said filtering,
- said demineralizer being an anion exchange resin,
- a sorber fluidly connected to said demineralizer, for receiving the effluent from said demineralizer, said sorber being an organic polymeric material for removing remaining amounts of said phosphates and esters and hydrolysates from said mixture to produce substantially clean water.
Dependencies are inferred from the claim text.