Life Cycle CO_2 Evaluation for Household Garbage Disposers in On-Site Wastewater Treatment Equipment Area

Abstract

We analyzed the change in CO_2 emissions of a municipal waste and wastewater treatment infrastructure in on-site wastewater treatment equipment area, by introducing newly developed household on-site wastewater treatment equipment that were acceptable for disposer wastewater, and disposer wastewater treatment-systems for detached houses. The CO_2 emission reduction effect of the incineration process resulting from the introduction of the newly developed on-site the wastewater treatment process, and total CO_2 emissions decreased by 0.6% compared to previous levels. In the case of the introduction of disposer wastewater treatment-systems combined with conventional on-site wastewater treatment equipment, CO_2 emissions increased by 39% compared to previous levels. LCCO_2 resulting from the introduction of disposers in on-site wastewater treatment equipment area was 17% greater than the introduction in sewage treatment as a result of water-treatment efficiency, which may affect the treatment scale.