The Biofilter System--Use of Aquatic Plants for Water Purification,
Abstract
This paper describes a mechanical system for cultivating aquatic plants (waterhyacinth, watercress) in rivers and lakes that are severely polluted, for the purpose of water purification. The system also addresses the recovery of overgrown aquatic plants and reutilization as fertilizer, feed, solid fuel, or methane gas. Through laboratory and field tests and use of a simulation model, the water purification effectiveness of various cultivation, growth, and removal scenarios can be estimated. A plan for recovery, disposal, and reutilization of aquatic plants is described. Experiments with test plants in Doho Pond (3.4 ha) in Ibaraki Prefecture demonstrated effective removal of nutritive salts, with less energy, low cost, and no waste generation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1992
- Accession Number
- ADP006840
Entities
People
- T. Inoue
- T. Mishima