Ishigaki Company Limited

Yasuaki Nishihara

Manabu Yamashita

Masayoshi Katayama

Masakazu Morita

Hiroyuki Mino

Atsushi Yanai

Ryosuke Tamauchi

Yasutaka Suetsugu

A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.

Sludge dehydration system and sludge dehydration method

A recovery device is configured to recover specific material as a dewatering aid from sludge generated in a sewage treatment process. The recovery device includes: a grinder configured to fragment a solid in the sludge to obtain prepared sludge; a separator configured to separate hardly decomposable organic matter and easily decomposable organic matter from the prepared sludge; and an extractor configured to continuously extract hardly decomposable organic matter having specific properties as the dewatering aid from the hardly decomposable organic matter separated by the separator.

Recovery device and recovery method for recovering specific material from sludge

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Kagawa, Japan

Yasuaki Nishihara