ECOPAD(Ecodays Plug - Flow Anaerobic Digester)

ECOPAD (ECOdays' Plug-flow Anaerobic Digester)1.1 ECOPAD Characteristics1.2 ECOPAD  vs CSTR (Conventional AD)   ECOPAD CSTR Technology Diagram                          Type of Flow Modified PFR (Vertical CSTR-series) CSTR Type of Mixing Non mechanical mixing,Mixing by the gas rising and wastewater falling in the block stages Mechanical mixing HRT 20 More than 25 Gas yielding 90~120?/ton(based on food waste) 30~40?/ton(based on food waste) Methane Content 70~75% 60~65% Removal efficiency 75~90% 60~70% Features - Application for the variable waste- High biogas yielding- No trouble by the mechanic equip. - Demand a big space- Limited removal efficiency- Many trouble by the mechanic equip. 1.3 Fluid flow characteristics - Mixing by the gas rising and wastewater falling- No dead space by the separate inner space- High removal efficiency and gas yieding by PFR- Long SRT by PFR 1.4 ECOPAD Economical factors1.4.1 Construction cost   ECOPAD CSTR Process Pretreatment-AD Pretreatment-AD Civil 80% 100% Equipment 144% 100% Total 115% 100%   1.4.2 Operation   ECOPAD CSTR Treatment Cost 66% 100% Electric Sale 400% 100% Net Profit 450% 100%   1.5 References Type of Influent Capacity Orgacnic waste treatment facility for biogas in Jecheon 52?/day Orgacnic waste treatment facility for biogas in Cheongju 200?/day Orgacnic waste treatment facility for biogas in Sokcho 80?/day Orgacnic waste treatment facility for biogas in Paju 30?/day Total 4 As of 2012     Orgacnic waste treatment facility for biogas in Sokcho   Optional Information- Payment : L/C- Origin : Republic of Korea- Samples : Not Avaliable