SEWAGE TREATMENT APPARATUS, AND SEWAGE TREATMENT METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To achieve advanced treatment for enhanced treated water quality in sewage treatment, and reduction in weight and odor of treated sludge, to prevent deterioration and fouling of separation membrane as much as possible, and to achieve long life of the separation membrane.SOLUTION: A sewage treatment apparatus includes: a solid-liquid separator; a sludge modification device storing a biological growth medium decomposing polluted matter and polluted sludge; and a membrane treatment device. The membrane treatment device is installed at a downstream side of the solid-liquid separator and the sludge modification device. In addition, a sewage treatment method uses the sewage treatment apparatus.