초록 ▼

A process for removing organic compounds from water is disclosed. The process involves gas stripping followed by membrane separation treatment of the stripping gas. The stripping step can be carried out using one or multiple gas strippers and using air or any other gas as stripping gas. The membrane

A process for removing organic compounds from water is disclosed. The process involves gas stripping followed by membrane separation treatment of the stripping gas. The stripping step can be carried out using one or multiple gas strippers and using air or any other gas as stripping gas. The membrane separation step can be carried out using a single-stage membrane unit or a multistage unit. Apparatus for carrying out the process is also disclosed. The process is particularly suited for treatment of contaminated groundwater or industrial wastewater.

대표청구항 ▼

A process for removing an organic compound from water, comprising: (a) introducing a flow of water to a gas-stripping step adapted to contact gas and water, thereby causing stripping of said organic compound from said water by said gas and producing an organic-depleted water stream; (b) passing said

A process for removing an organic compound from water, comprising: (a) introducing a flow of water to a gas-stripping step adapted to contact gas and water, thereby causing stripping of said organic compound from said water by said gas and producing an organic-depleted water stream; (b) passing said gas to a membrane separation step, comprising: (i) providing a membrane having a feed side and a permeate side; (ii) contacting said feed side with said gas; (iii) withdrawing from said permeate side a permeate gas stream enriched in said organic compound compared with said gas; (iv) withdrawing from said feed side a residue gas stream depleted by at least about 80% in said organic compound compared with said gas; (c) reusing at least a part of said depleted gas stream as stripping gas in said gas-stripping step.