An Effective Biocide Combination Treatment Program for Cooling Water Systems

摘要

The use of two biocides is finding greater use in controlling microbial growth in cooling water systems.rnThe tandem of one biocide fed on a slug basis with another biocide fed on a continuous basis, allows for greaterrnoverall microbial control and inhibits the likelihood of tolerance development when using one biocide exclusively.rnAn effective biocide combination is glutaraidehyde, fed on an intermittent basis, concurrent with a low levelrncontinuous use of DBNPA. Recent information on biofilm control, efficacy and synergy will be presented as wellrnas a case history from a recent cooling tower trial in Northeastern Pennsylvania. In addition, results from efficacyrntesting on Legionella and Legionella harboring protozoa will be presented.