Sanyo Electric Co., Ltd.

School Legal Corporation, Osaka Medical College

Jun Hirose

Naoki Hiro

Fumitake Kondo

Naoki Kitayama

Masaki Moriizumi

Takashi Nakano

Hiroshi Takenaka

Yoko Ando

Kouichi Sano

Toyohide Kobayashi

A water treatment apparatus includes a storage unit storing water to be treated including a pharmaceutical drug, an apply unit applying the water to be treated to the storage unit, an addition unit adding into the water to be treated metal salt generating halide ions when dissolved in the water to be treated, and an energizing unit applying a current to a pair of electrodes immersed in the water to be treated in the storage unit. The pharmacological activity of the pharmaceutical drug is eliminated or reduced by decomposing or altering at least a portion of the chemical structure of the pharmaceutical drug included in the water to be treated through electrolysis.

Water treatment apparatus and method

The object of the present invention is to provide a water treatment device in which temperature does not affect performance in nitrogen removal. Water circulates in a first anaerobic filter bed chamber, a second anaerobic filter bed chamber, a contact aeration chamber, a sedimentation chamber, and an electrolytic chamberfor phosphorus removal. The supernatant in sedimentation chamberflows into a disinfection chamberand is then sent to an electrolytic chamberfor nitrogen removal. An electrode pair is provided inside electrolytic chamber. Halogen ions present in the water are oxidized on the anode side. After halogen gas is generated, this gas reacts with water and generates hypohalous acid. On the cathode side, the nitrogen components in the water are converted to nitrate ions, and these nitrate ions are further converted to ammonium ions. The hypohalous acid and ammonium ions react, and the nitrogen components are converted to nitrogen gas by way of chloramine.

Water treatment device

A waste treatment system permitting treatment of organic wastes at low cost is provided. In the waste treatment system, organic wastes such as sewage, garbage and sludge are introduced into a methane fermentation bath for anaerobic fermentation. The methane gas produced in the bath is refined in a gas holder and then supplied to an electric generator, where the methane gas is used as a raw material for power generation. Digested liquid within the methane fermentation bath is supplied to an electrolytic bath via a flow adjustment bath and a fine screen. In the electrolytic bath, the digested liquid is subjected to electrolysis, by applying potentials to an electrode pair in the electrolytic bath based on the electric power obtained by the electric generator. By the electrolysis, nitrogen components including organic nitrogen and ammonia nitrogen, and BOD, SS and phosphorus components are removed from the digested liquid.

Waste treatment system for treatment of organic waste and digested liquid thereof

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Hirakata, Japan

Jun Hirose