Information on the materials, design and installation of the proprietary RUCK system is available through RUCK Systems in Storrs, Connecticut. Residuals Generation Clogging of the surface of sand filters occurs as the pore space between the media begins to fill with inert and biological materials. The sand media removed must either disposed of at a sanitary landfill, or regenerated if such operations are available and cost-effective locally. The individual unit processes within this system have been demonstrated to be reliable if properly constructed and maintained. There is however very limited data on the overall system's performance.
Most data is from research and pilot scale projects.
The spent sand must be transported to and disposed of at a permitted landfill, or regenerated for reuse. The unit should be backflushed periodically to remove accumulated microbiological films. Potential Environmental Impacts Based upon available performance data, this type of system should be capable of producing an effluent with fairly low concentrations of BOD, TSS and total nitrogen. Pathogen reduction for this system should be superior to that of the recirculating sand filter. As described above, sand filters must be properly maintained in order to function properly.