Activated Sludge is NOT considered a hazardous material according to the criteria specified in the Hazardous Products Act under the Economic Action Plan 2014 Act, No.09-Nov-2016
Oxygen Demand (BOD) removal. The removal of BOD is done by a biological process, such as the suspended growth treatment process. This biologi- cal process is an aerobic process and takes place in the aeration tank, in which the wastewater is aerated with oxygen.
The main difference in the work procedures followed in a BSL-1 laboratory and a BSL-2 laboratory is that employees in a BSL-2 laboratory will use a BSC as a primary barrier for potentially hazardous aerosols. ... Access to BSL-2 laboratories must be restricted.
https://handling-solutions.eppendorf.com › ...
Biosafety Levels and their Meaning - Eppendorf Handling Solutions