This is aim to use and recycle the wasted biogas from the dispose process of the food wasted facility in Dae-Gu. Furthermore, the virtuous biogas is to be supplied for the Industrial Complex as energy resource. It is to develop the system for Pre-treatment and High-efficiency of the wasted biogas that includes low concentration and impurities. The Pre-treatment is to remove Siloxan, Hydrogen sulfide, Carbon dioxide, Oxygen and etc. which might influence to end-users in negative way. The High-efficiency system is to remove moisture in Biogas and increase the purity for keeping the constant concentration Methane for useful resource with measuring the portion and density in real time. It shows that constant above 60% Methane gas is possibly to be supplied to end-users as a alternative energy resource rather than using LNG, LPG and etc. for their own boilers system. It is expected that there are Environmental, Economical and Social effects with establishing optimum network for the reuse of Biogas. Environmental positive effects are to reduce the Global Warming Potential, use fossil fuel and Green-house gases. Economically it will bring down the production cost of end-users by using the pre-treated biogas. Furthermore, the alternative energy resource is to be secured and New R&D Study might be applied with FuelCell Power Plant, Hydregen Station and Hydrogen Reforming in social effects.