Medical Waste Incinerator at a Seattle, WA Medical Center

Application

Medical waste incinerator at a Seattle, WA, medical center which burns 100% of the infectious waste stream.

System Specifications - Baghouse

Mikropul Top-Load, Pulse-Jet
168 grooved Snap-Band Filter Bags
3500 acfm, 425ºF
Air-to-Cloth Ratio: 1.8 ft3/min/ft2
Dry Injection - Sodium Bicarbonate
Grain Loading: 1 - 4 gr/acf

Filter Bags

GORE® membrane/Teflon® B fiberglass fabric (16.8 oz/yd2) replaced 22 oz/yd2 conventional Teflon® B fiberglass filter bags

Incinerator

Thermtec Model FP800AR
Designed to combust 500 pounds/hour of infectious waste
Operates 17 hours/day, 6 days/week

System Operation

Since the GORE® membrane filter bags were installed in April 1991, the pressure differential across the baghouse remains below 3 inches w.g. before cleaning. After one complete cleaning cycle, the pressure differential is reduced to 0.5 inch of w.g. The cleaning air pressure is set at 40 psig and the cleaning cycle is actuated once every two days.

Compliance testing revealed an outlet emission level of 0.0008 gr/acf for front-half catch particulate matter.