| 摘要 |
PURPOSE: Drain pipe anti-corrosion slurry is provided to prevent the corrosion of a drain pipe by producing the slurry with an aqueous mixture of metal hydroxide or metal dioxide selected from a class comprised of magnesium hydroxide and titanium dioxide, with sodium hydroxide. CONSTITUTION: Drain pipe anti-corrosion slurry is an aqueous mixture, and is formed of a solution including metal hydroxide or metal dioxide selected from a class comprised of magnesium hydroxide and titanium dioxide, and less than 1% of sodium hydroxide. A mixing ratio of the metal hydroxide or metal dioxide is 50-60%, and water is 40-50%. A mixing ratio of the sodium hydroxide is 50%, and water is 50%. The pH of the slurry is greater than 13.0, and the usage lifetime of the slurry is 15-24 months. The slurry is coated on the inside of a drain pipe for preventing corrosion. [Reference numerals] (AA) Water drop; (BB,FF,II) Bacteria; (CC) Place of oxidizing bacteria; (DD) Sewage; (EE) Organic material; (GG) No air; (HH) H_2S oxidation |
