ANAEROBIC DIGESTION METHOD FOR SLUDGE AND ANAEROBIC TREATMENT APPARATUS FOR SLUDGE

摘要

PPROBLEM TO BE SOLVED: To provide an anaerobic treatment apparatus for sludge capable of achieving the enhancement of digestion reaction efficiency and the miniaturization of a digestion tank at a low running cost. PSOLUTION: The anaerobic treatment apparatus for sludge is equipped with an alkali treatment tank (1) for treating sludge generated in biological treatment process for sewage with alkali, a biological solubilization tank (3) connected to the alkali treatment tank to biologically solubilize sludge after alkali treatment under an anaerobic, oxygen-free or microaerobic condition and an anaerobic digestion tank (4) for anaerobically digesting solubilized sludge. PCOPYRIGHT: (C)2003,JPO