Septage Bio – Filter Device

Abstract

While septage management systems are widely used globally where central sewerage is unavailable, local government units (LGUs) in the Philippines often hesitate to implement them due to budget constraints, technical knowledge gaps, and a lack of urgency regarding water resource protection. To address this, a step-to-date biofilter device was developed to offer an affordable, natural, and localized treatment solution for individual households, making it an excellent alternative for resource-strapped LGUs. Structurally, the device features filtration and media chambers connected via PVC pipes, running directly from a home's septic tank to a sampling faucet. Testing shows that this natural treatment system successfully meets the Total Dissolved Solids (TDS) and Biochemical Oxygen Demand (BOD) standards mandated by the Department of Environment and Natural Resources (DENR via DAO-2016-08), rendering the treated effluent completely safe for ground disposal.