초록 ▼

The treatment of raw water, particularly the desalination of waste or other water with a high salt content, is accomplished by means of a process which includes two membrane separation steps performed in concentrate sequence. The concentrate from the second membrane separation step is further treate

The treatment of raw water, particularly the desalination of waste or other water with a high salt content, is accomplished by means of a process which includes two membrane separation steps performed in concentrate sequence. The concentrate from the second membrane separation step is further treated by means of a thermal concentrating procedure. The water to be processed is first treated to minimize the formation of scale during the first membrane separation step and the concentrate from the first membrane separation step is similarly treated. The overall process also includes the production of materials necessary for reconditioning ion exchange apparatus employed for raw water conditioning and concentrate treatment.

대표청구항 ▼

A water treatment process comprising the steps of: conditioning inflowing raw water to reduce scale forming materials therein; pressurizing the conditioned water; subjecting the pressurized water to a first membrane separation process to produce a permeate and a concentrate; treating the concentrate

A water treatment process comprising the steps of: conditioning inflowing raw water to reduce scale forming materials therein; pressurizing the conditioned water; subjecting the pressurized water to a first membrane separation process to produce a permeate and a concentrate; treating the concentrate from the first membrane separation process to reduce scale forming materials therein; pressurizing the treated concentrate; subjecting the pressurized concentrate to a second membrane separation process to produce a permeate and a concentrate; subjecting the concentrate from the second membrane separation process to a thermal concentration process to produce condensate and carbon dioxide; mixing the permeate produced in the first and second membrane separation process with the condensate from the thermal concentration process; and injecting carbon dioxide produced during the thermal concentration process into the said mixture of permeate and condensate to produce a potable water.