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M650
An Introduction to Air Pollution Control Scrubbers and Precipitators

J. Paul Guyer, P.E., R.A., Fellow ASCE, Fellow AEI

Scrubbers and precipitators are technologies employed in air pollution control. A scrubber utilizes a liquid to separate particulate or gaseous contaminants from gas. Separation is achieved through mass contact of the liquid and gas. Boiler emissions to be controlled include fly ash and sulfur oxides. Incinerator emissions to be controlled include fly ash, sulfur oxides and hydrogen chloride. An electrostatic precipitator is a device which removes particles from a gas stream. It accomplishes particle separation by the use of an electric field which imparts a positive or negative charge to the particle, attracts the particle to an oppositely charged plate or tube, and-removes the particle from the collection surface to a hopper by vibrating or rapping the collection surface.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.


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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.

AIA Members: You must take the courses listed under the category "AIA/CES Registered Courses" if you want us to report your Learning Units (LUs) to AIA/CES. If you take courses not registered with AIA/CES, you need to report the earned Learning Units (not qualified for HSW credits) using Self Report Form provided by AIA/CES.

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