Cameron GNSymons JMSpencer SRMa JY2010-02-152010-02-151989http://hdl.handle.net/1969.3/2327653-62This study evaluated the potential of five biocides - potassium permanganate, copper, chloramine, bromamine, and chlorine dioxide - to control the occurrence of juvenile Asiatic clams (Corbicula fluminea) in a surface water (Trinity River, Texas) infested with adults, without producing trihalomethanes (THMs) and thereby preserving the water as a source for the city of Houston's drinking water treatment plant. For comparison, free chlorine was also investigated because it is a popular form of control for Asiatic clams elsewhere. Because hydraulic detention time in the distribution pipeline was short (15-18 h). Biocide effectiveness was monitored in an arbitrarily selected 24-h period. Free chlorine (which also produced THMs), copper, and potassium permanganate were ineffective; bromamines, although somewhat effective, produced THMs; and chlorine dioxide and chloramines were effective. From a cost and ease-of-handling point of view, chloramine was the biocide of choiceBiocidesBromine compoundsCHLORINE COMPOUNDSCopperCopper CompoundsPesticidesTexasWaterWater pipelinesWater treatmentWater Treatment -- ChlorinationJournal