A food waste disposer is a device, electrically powered, installed under a kitchen sink between the sink's drain and the trap which shreds food waste into pieces small enough to pass through plumbing. Use of this unit is convenient and hygienic for discharging food waste in kitchen. Nevertheless, it has been illegal until now in Korea because of a conflict with the government's policy-resource recovery from food waste-and a perceived threat of damage to the city's sewer system. Kitchen waste disposer units increase the load of organic carbon that reaches sewage treatment plant, which in turn increase the consumption of oxygen. But there is a growing need to introduce this unit in Korea lately for manhattanization and ageing society, etc. So an attempt was made to introduce the food waste disposer system of 'treatment type before discharging to sewer', but it was not appropriate for Korean situation. In this study, we suggest a suitable disposer system in Korea based on a proper disposer technology followed by an innovative solid-liquid separation technology. After grinding and solid-liquid separation using these technologies, less than 20 percent solids were discharged as wastewater. This novel food waste disposer system can allow satisfaction with the government's policy and more high-quality resource recovery from food waste in the facilities.
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