| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sludge treatment method capable of reducing the solubilization treatment quantity of sludge by obtaining a high solubilization ratio and capable of reducing return flow load to perform stable water treatment. SOLUTION: In the sludge treatment method constituted so that organic sewage is treated using the action of microorganisms in a bilogical reaction tank 1 and excess sludge F generated in the bilogical reaction tank 1 is solubilized and the solubilized sludge G is returned to the bilogical reaction tank 1 to be biologically treated, an acid mixed with hydrogen peroxide is added to the excess sludge F and physical treatment is applied to the excess sludge F to which the acid is added to solubilize the sludge.</p> |
