However, once the problem is solved, many users are reluctant to remove the program and risk system deterioration and possible permit violation. Several areas where bioaugmentation has proven to be beneficial are discussed below. It would cost millions in capital to upgrade these systems. By increasing the microbiology numbers and diversity via bioaugmentation, the desired results can be achieved. In the pulp and paper industry in the southeastern United States, improvement in BOD effluent levels of 30 percent have been documented.
Bacteria form a natural biopolymer that aid in settling.
Toxic shocks and system changes can result in a bacterial population with little biopolymer and poor settling characteristics. The traditional approach of adding organic polymers or inorganic coagulants as settling aids can be effective but expensive. By inoculating the system with organisms known to be both resistant to the toxicity and excellent floc formers, polymer demand can be greatly reduced or eliminated. Typically the cost of bioaugmentation is significantly less than polymer treatment. In addition, it provides an overall healthier biomass.