Ebara Corporation

Yutaka Niida

Yuichi Fuchu

Koichi Masuda

Kazuhiro Hasegawa

Kazunari Tanaka

Hiroshi Toriumi

Hideyuki Yoshida

Yoshiharu Yasuhara

Sakae Kosanda

Hiromasa Kaihatsu

Hiroshi Takasu

Tadashi Nagawa

Sumio Komine

Seiichi Tsuda

A method and an apparatus for disinfecting drainage are provided. A bromine-based or iodine-based disinfectant is added to water to obtain disinfecting water, and the disinfecting water is added to predetermined drainage. The apparatus has a device for producing disinfecting water from a disinfectant and drainage, a sand basin, and a channel for introducing the disinfecting water into the sand basin, and the drainage is disinfected while the drainage is dwelling in the sand basin.

Method and apparatus for disinfecting drainage

A solid-liquid separator including a separation tank, a treated water outlet ( ) at the top of the tank, a sludge outlet ( ) at the bottom of the tank, a draft tube ( ) near the center in an upper inner zone of the tank and connected to a raw water inlet pipe ( ), horizontally rotatable multistage stirring blades A ( ) in the draft tube, horizontally rotatable multistage stirring blades B ( ) immediately below the draft tube, a horizontal baffle ( ) below the stirring blades B, a floating filter medium layer ( ) around the outside of the draft tube above the stirring blades B, and a screen ( ) fixed below the water level above the filter medium layer, and optionally, a filter medium-receiving screen ( ) around the lower outside of the tube in combination with stirring rods ( ) above the screen or aeration nozzles.

Solid-liquid separator

Growing community of inventors

Tokyo, Japan

Yutaka Niida