Metawater Co., Ltd.

Tokyo Metropolitan Sewerage Service Corporation

Kouji Kassai

Hiroyuki Takahashi

Makoto Maeda

Tsutomu Wada

Shigehiro Suzuki

Nobuki Tsuboi

Yuji Furuya

Noriaki Inagaki

Keiichi Sone

A wastewater treatment apparatus includes an air diffusing unit, a denitrification confirming unit, a nitrification confirming unit, a gas supply-amount control unit. The air diffusing unit supplies gas to nitrogen-containing water. The denitrification confirming unit provided at a first predetermined position confirms a denitrification state whether a desired proportion of the nitrate has been denitrified. The nitrification confirming unit provided at a second predetermined position confirms a nitrification state whether a desired proportion of the ammonia has been nitrified. The gas supply-amount control unit controls a gas supply amount at least on an upstream side of the denitrification confirming unit, so that the desired proportion of the nitrate is denitrified at the first predetermined position, and controls the gas supply amount at least on an upstream side of the nitrification confirming unit, so that the desired proportion of the ammonia is nitrified at the second predetermined position.

Wastewater treatment apparatus, wastewater treatment method, wastewater treatment system, control device, and control method

Growing community of inventors

Tokyo, Japan

Kouji Kassai