Availability Limitations

This process is used to treat aqueous wastes that are more volatile, less soluble (e.g., chlorinated hydrocarbons such as tetrachloroethylene) and aromatic (e.g., toluene). Limitations include temperature dependency, as stripping efficiency is impacted by changes in ambient temperature. In addition, the presence of suspended solids may reduce efficiency. If the concentration of volatile organic contaminants (VOCs) exceeds about 100 ppm, another separation process, e.g. steam stripping, is usually preferred.

Status. This process is commercially available.

Vacuum Pump b

Distilled Vapor

Heat Exchanger

Cooling Water

Vapor Chambe

Cooling Water

Vapor Chambe

■ Steam Condensate

Dilute Liquid Dilute Liquid

Feed Pump

Transfer Pump

Concentrated Liquid ->-

FIG. 11.15.4 Typical single effect evaporator, falling film type.

Exhaust

Condensate

Project Earth Conservation

Project Earth Conservation

Get All The Support And Guidance You Need To Be A Success At Helping Save The Earth. This Book Is One Of The Most Valuable Resources In The World When It Comes To How To Recycle to Create a Better Future for Our Children.

Get My Free Ebook


Post a comment