Abstract: The invention provides systems and methods for removing perchlorate from water. The systems comprise reactors comprising biomass for degrading perchlorate, and the operation of the systems can be controlled according to novel logic specifications. Also provided are filters and filtration systems for clearing water in advance of analysis of the concentration of contaminants within the water. The filters comprise a length of tubing configured to generate backpressure at the filter sufficient to facilitate the flow of a water sample through the filter without overpressurization.

Abstract: The invention provides systems and methods for removing perchlorate from water. The systems comprise reactors comprising biomass for degrading perchlorate, and the operation of the systems can be controlled according to novel logic specifications. Also provided are filters and filtration systems for clearing water in advance of analysis of the concentration of contaminants within the water. The filters comprise a length of tubing configured to generate backpressure at the filter sufficient to facilitate the flow of a water sample through the filter without overpressurization.

Abstract: A system and method for biological regeneration of ion exchange and absorptive media including a vessel configured to contain a bed of contaminated media particles. The vessel includes a first region configured to receive biological regenerating fluid for contacting media particles in the first region at a first volumetric flowrate sufficient to produce a shear force high enough to reduce bio-film thickness on the media particles; a second region configured to receive a portion of biological regenerating fluid from the first region, wherein the portion of biological regenerating fluid in said second region has a second volumetric flowrate lower than the first volumetric flowrate; and a third region configured to receive another portion of biological regenerating fluid from the first region, wherein the another portion of biological regenerating fluid in the third region has a third volumetric flowrate lower than the second volumetric flowrate.