초록 ▼

A method of treating raw water containing phosphorous and nitrogen compounds and organic matter in which the raw water is passed through an aerobic zone containing a porous material. Anaerobic treatment is carried out in the presence of a hydrogen donor. The porous material is tobermorite and/or xon

A method of treating raw water containing phosphorous and nitrogen compounds and organic matter in which the raw water is passed through an aerobic zone containing a porous material. Anaerobic treatment is carried out in the presence of a hydrogen donor. The porous material is tobermorite and/or xonotlite with a porosity of 50% to 90% and is produced by foaming and hardening a silica-based material, a lime-based material and water, and subjecting the porous material to hydrothermal synthesis. The order of the aerobic and anaerobic treatments may be varied.

대표청구항 ▼

A method of treating water containing phosphorus compounds comprising passing said water through a treatment zone containing a porous contact material, said porous material comprising tobermorite, xonotlite or a mixture thereof and having a porosity of 50% to 90%, said porous material being produced

A method of treating water containing phosphorus compounds comprising passing said water through a treatment zone containing a porous contact material, said porous material comprising tobermorite, xonotlite or a mixture thereof and having a porosity of 50% to 90%, said porous material being produced by foaming and hardening an aqueous slurry which comprises silica-based material, lime-based material and water in the presence of a foaming agent to form a porous product, and then subjecting said porous product to hydrothermal synthesis.