PUP PUMP: PROCESSING OF HUMAN FECES AS A ALTERNATIVE BIOENERGY POWER PLANT ZERO WASTE

Abstract

OPEC (Organization of the Petroleum Exporting Countries), predicts world oil and gas consumption to increase from year to year (Sebayang, 2018). In 1999, Indonesia was one of the 2nd largest oil producers in the Asia Pacific (Dzulfaroh, 2020). However, now the situation has reversed, Indonesia's oil reserves are very depleted and it is predicted that they will only be able to last for less than 10 years (RI, 2021). Meanwhile, the demand for oil and natural gas is still high, especially for power generation. Therefore, a new alternative that is environmentally friendly is needed (Kholiq, 2015). One of them is by utilizing biogas. Biogas is a gas produced by methanogenic bacteria, by degrading (decomposing) organic compounds under anaerobic conditions. One of the compounds that can be used as a source of biogas is feces. Usually human feces will only accumulate and settle at the bottom of the septic tank. This fecal sediment must be drained for 2-5 years (Sudarmadji, 2013). If this waste is managed properly, it has the potential as an alternative power plant, through the biogas it produces. Furthermore, this biogas is connected to the gas storage box. In the box is also equipped with a pressure detector. If the pressure is appropriate, then the gas will be released to the generator that has been assembled coupled with a biodigester. The generator converts heat energy into kinetic energy, then into mechanical energy, and finally into electrical energy (Biogas, 2018). 1 m3 of biogas is able to produce electricity equivalent to 1.25 Kwh or the equivalent of turning on a light for 6 hours (Talakua, 2019). Meanwhile, biogas processed waste (slurry) contains organic material with complete nutrition (Muanah, 2019), so it can be used as fertilizer. In addition, slurry can also be used as raw material for bricks (Syaifuddin, 2018).