Patent ID: 6946081
Filing Date: 2005-09-20
Classification: B01D,C02F,Y02A,Y02W,Y10S

Abstract:
1. A purification system comprising: an ambient variable speed pump that inputs sea water and outputs through an ambient feed water line; a power plant that inputs sea water and outputs heated sea water through a high temperature variable speed pump to a high temperature feed water line, where high temperature is a temperature higher than the ambient temperature; a first temperature sensor in said ambient feed water line; a second temperature sensor in said high temperature feed water line; a blender that receives said ambient feed water and said high temperature feed water from said ambient feed water line and said high temperature feed water line, respectively, blends said ambient feed water and said high temperature feed water, and outputs blended feed water through a blended feed water line; a third temperature sensor in said blended feed water line; a pretreatment filter that receives said blended feed water from said blended feed water line, separates blended feed water into filtered feed water, pretreatment unusable water, and pretreatment solid waste, and outputs said filtered feed water through a filtered feed water line, said pretreatment unusable water through a pretreatment unusable water line, and said pretreatment solid waste through a pretreatment solid waste line; a first purification feed pump that receives said filtered feed water from said filtered water feed water line, pumps and outputs said filtered feed water through a first feed pump line; a first membrane filter that receives said filtered feed water from said first feed pump line, separates, and outputs first membrane filter unusable water through a first membrane unusable line and first membrane filter output water through a first membrane output line; a first membrane pressure sensor located in first purification pump line; a separator that receives said first membrane filter output water from said first membrane output line, separates, and outputs first membrane output usable water through a first membrane output usable line and first membrane output potentially usable water through a first membrane output potentially usable line; a second membrane feed pump that receives said first membrane output potentially usable water from said first membrane potentially output usable line, pumps, and outputs said first membrane output potentially usable water through a second purification feed pump line; a second membrane pressure sensor located in said second purification feed pump line; a second membrane filter that receives said first membrane output potentially usable water from said second purification feed pump line, separates, and outputs second membrane usable water through a second membrane usable line and second membrane unusable water through a second membrane unusable line; an energy recovery turbine disposed in said first membrane unusable line; an unusable output line that receives said first membrane filter unusable water and second membrane unusable water from said respective first and second membrane unusable lines, mixes said waters, and outputs said mixed waters to a discharge; a membrane usable mixer that receives said first and second membrane usable water through said respective said first and second membrane usable water lines, mixes said waters, and outputs said mixed waters through a purified line; and a first storage tank for storing purified water, said tank receiving said mixed water from said purified line.