Kurita Water Industries Ltd.

Japan Sewage Works Agency

Matsuzaki Industry Co., Ltd.

Matsuzaki Seisan Kabusiki Kaisha

Tadao Takeuchi

Yasuhiko Watanabe

Noboru Fujiwara

Syuzo Koike

Naohiro Taniguchi

A coagulation-flocculation apparatus for conducting coagulation-flocculation treatment by adding a coagulant or flocculent to suspension such as sludge is capable of diffusing the flocculant into the suspension uniformly so as to exhibit flocculation function of the flocculant effectively, thereby enhancing the flocculation efficiency, shortening the processing time, and allowing reduction in size of the apparatus. The flocculation apparatus has transfer pipingfor transferring suspension, small-diameter pipingof which diameter is smaller than that of the transfer pipingand which is connected to the transfer pipinga flocculent supplying device disposed on the small-diameter pipingor the transfer pipingon the upstream side thereof, and a temporary retention sectionfor flocculation having an inlet and an outlet for water, the small-diameter pipingbeing connected to the inlet. The cross-sectional area of flow path at at least a part of the temporary retention sectionin the direction from the inlet toward the outlet is larger than the cross-sectional area of the transfer piping

Coagulation-flocculation apparatus

A coagulation reaction tank comprises a cylindrical tank provided in the central part thereof with a rotary stirring mechanism furnished with stirring vanes and a filtration tank for introducing the liquid from within the cylindrical tank in the form of filtrate and discharging the filtrate out of the cylindrical tank. This coagulation reaction tank is characterized by the fact that the filtration tank provided in the bottom thereof with slits is disposed in the cylindrical tank above the stirring vanes or the cylindrical tank provided in the upper part of the wall thereof with slits and the filtration tank is disposed outside the slits.

Coagulation reaction tank

Suitcase

The invention is a suitcase with peripheral protector frames around the mouth of a suitcase with casters secured to the protector frames through plastic boards mounted by screws extending into mountain shaped ridges in the castor body.

Case such as suitcase and its improvement

Growing community of inventors

Tokyo, Japan

Tadao Takeuchi