Overall system flow
Rintoru can be used to recover phosphorus from wastewater produced by various industries. The recovered phosphorus can be turned into fertilizer and sold by nearby fertilizer companies, etc., absorbed as a crop nutrient. These crops can then be consumed by people or animals, and consequently, the phosphorus cycle is completed.
Phosphorus recovery flow in the sewage field
Sewage is purified using processes such as sedimentation and biological treatment before being discharged into rivers, seas, etc. Most of the phosphorus contained in this sewage is concentrated in the sludge and filtrate of sludge that are produced during the processes of biological treatment. Taiheiyo Cement focused on the potential for efficient recovery of phosphorus from filtrate of sludge.