Below are listed the time-tested applications of bioaugmentation followed by the limits of bioaugmentation (even biological treatment as a whole):
Bioaugmentation - Proven Applications
- Startup of a wastewater treatment system
- Recovery following loss of biomass due to toxic event, mechanical failure, or washout
- Reduce acclimation time to a new waste stream or to combat variation in influent makeup or concentration
- Help stabilize biomass under both high and low temperature conditions
- Restore a population of slow growing organisms such as ammonia oxidizing bacteria (AOB) or sulfur oxidizing bacteria
- Change the biological population to a more favorable microbial distribution - such as filamentous organisms control in conjunction with disinfection
Bioaugmentation - Limitations
- Cannot replace treatment time - all bacteria require time & proper F/M conditions to work
- Bioaugmentation may extend a treatment systems capacity, but cannot fix a grossly overloaded system
- Sludge wasting will still be required. While sludge volumes and entrapped water often decreases with bioaugmentation, wasting must be done to prevent accumulation of solids and dead cell mass - old sludge
- Low D.O. is fixed by adding aeration or more efficient aeration equipment - microbes or other chemical additives (other than peroxides) will crate higher D.O.
- Metal residuals are not controlled by microbes. Also, some xenobiotic materials are not readily degraded and will pass through a standard treatment system.