On-site purification treatment device "PPP (Sleepy)"

The processing tank has been made more compact while achieving greater processing capacity.

PPP (Sleepy) is a device that allows the evaporation and diffusion of treated wastewater on sites without sewage systems, where even if a septic tank is installed, there is no outlet for discharge. It consists of a super high-density polyethylene container with a diameter of 600 mm and a height of 900 mm, along with a high-void crushed stone filling layer. Processing Steps: The treated wastewater from the combined septic tank is sprayed from the top of the treatment device, where a scum removal net adsorbs impurities, and a carrier sponge performs adsorption and filtration of suspended solids (SS), followed by decomposition by microorganisms. By installing a waterproof sheet at the bottom of the treatment layer, the treated water is stored in the high-void crushed stone layer and gradually diffuses into the soil from the walls of the treatment layer, ultimately evaporating into the atmosphere. To ensure that the water quality is conducive to easy diffusion into the soil within the treatment device, stable functionality is maintained. PPP (Sleepy) has been installed in Tochigi Prefecture, Ibaraki Prefecture, Gunma Prefecture, Chiba Prefecture, Yamagata Prefecture, Shizuoka Prefecture, Miyagi Prefecture, Kanagawa Prefecture, Aichi Prefecture, Kumamoto Prefecture, and others.

Water Treatment