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  2003 Department of Microbiology, University of Hong Kong

Features of the HKURCEID - Waste Removal & Sterilisation

Waste from this facility needs to be sterilised out so that there is no possibility of infectious material being removed. Waste from the laboratory is put in tote boxes for autoclaving, and waste from the animal facilities is put in tote boxes and transferred out through the passboxes (Figures 1 and 2), to the red corridor.

At the end of the red corridor are two autoclaves for steam sterilisation of waste across the secure barrier (Figure 3).

Equipment is sterilised out of the facility by gaseous decontamination (formaldehyde) in a specially constructed decontamination chamber with 1200mm air tight doors (Figure 4).

Any liquid waste from the facility passes along heat welded poly propylene pipes (Figure 5) to the sewerage treatment plant in the basement of the facility (Figure 6).

The sewerage is treated using sodium hypochlorite in poly propylene tanks and then released to the Hong Kong sewerage system (Figure 7).

Click on the photos to view larger images

Passbox Passbox Secure Barrier Autoclave Decontamination Chamber Welded poly pipes
Figure 1
Figure 2
Figure 3
Secure barrier autoclave
Figure 4
Decontamination chamber
Figure 5
Welded poly propylene pipes
Sewerage treatment room Sewerage treatment plant      
Figure 6
Sewerage treatment room
Figure 7
Sewerage treatment room


Biosecurity & Biocontainment
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