초록 ▼

A water treatment process using a membrane separation apparatus to separate clean product water from a contaminated water source, the membrane is provided within a housing having inlet ports for collecting concentrated and product water, and the apparatus also includes a concentration chamber and a

A water treatment process using a membrane separation apparatus to separate clean product water from a contaminated water source, the membrane is provided within a housing having inlet ports for collecting concentrated and product water, and the apparatus also includes a concentration chamber and a venturi for injecting gas in the concentration chamber and producing a return stream.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of treating raw contaminated water from a water supply comprising:providing a housing having a first port and a second port;providing in the housing at least one separator element arranged within the housing including a water permeable membrane with a character

[ What is claimed is:] [1.]1. A method of treating raw contaminated water from a water supply comprising:providing a housing having a first port and a second port;providing in the housing at least one separator element arranged within the housing including a water permeable membrane with a characteristic of preventing contaminants in the raw water from passing therethrough, a product water conducting layer arranged adjacent the water permeable layer for receiving water passing through the water permeable layer, and a product water carrier duct connected to the water conducting layer for receiving water therefrom;communicating the raw water from the water supply to the first port to pass over the membrane such that product water passes through the membrane leaving contaminants in the raw water to form a concentrated contaminated water stream and passing the stream to the second port;providing a product water outlet port in the housing connected to the carrier duct for receiving product water therefrom;extracting contaminants from the concentrated contaminant water stream in a concentration chamber to form a return stream;returning at least some of the return stream to the housing at said one of the first and second ports to pass again over the element; andinjecting gas into the water at a position in the system such that the concentrated contaminant water stream when it enters the concentration contains injected gas,wherein the contaminants are extracted by feeding the concentrated contaminated water stream from said other of the first and second ports to a concentration chamber which is configured to reduce the velocity of the stream to cause by the velocity change deposition of some of the contaminants therefrom so as to settle in and collect in the concentration chamber, the concentration chamber being arranged such that the stream when extracted therefrom leaves the deposited contaminants in the chamber.