| 摘要 |
PROBLEM TO BE SOLVED: To provide an anaerobic wastewater treatment method and an anaerobic wastewater treatment apparatus capable of suppressing the outflow of a granule sludge.SOLUTION: In the anaerobic wastewater treatment method and the anaerobic wastewater treatment apparatus 1, a multimer of aluminum or iron is attached on the surface of a granule sludge by charging a monomer of aluminum or iron, or a multimer of aluminum or iron into an anaerobic treatment tank 5 containing the granule sludge or upstream 3, L1, L2 of the tank. This increases the density of the granule sludge, increases the specific gravity of the granule sludge so that it hardly floats, and suppresses the outflow of the sludge. |
