IMPROVEMENT OF IRRIGATION OR FILTERING* PERMEATION AND TRANSPIRATION TREATMENT BY USING SOIL OR OTHER STRUCTURE MATERIAL IN WATER TREATMENT

摘要

PURPOSE:To enhance water quality in a smaal scale and relatively simple manner by cleaning water using pretreatment of aerobic and anaerobic mixture treatment to be followed by treatment of permeation and irrigation. CONSTITUTION:Raw water is first preteated by aerobic and anaerobic mixture in the tank for such treatment. Then, the water is purified by treatment of permeation such as irrigation, permeation, transpiration, by using structure material such as earth and pearlite. In this manner, raw water is purified to a high degree by use of small scale and relatively simple equipment and operation. The method is also effective in preventing the structre material from getting dirty.