公开(公告)号：US09649578B2

公开(公告)日：2017-05-16

申请号：US14441408

申请日：2013-11-18

Applicant: KURITA WATER INDUSTRIES LTD.

Inventor： Satoshi Shimizu ,  Mitsuharu Terashima

IPC: B01D21/24 ,  B01D21/28 ,  C02F1/00

CPC classification number: B01D21/2405 ,  B01D21/2416 ,  B01D21/286 ,  C02F1/00 ,  C02F1/006 ,  C02F2001/007

Abstract: In a settling tank of the invention, treated water has good quality and whose operation is stable over a long period. A settling tank includes a tank body having a circular-cylindrical shape whose axial direction corresponds to the vertical direction, a distributor provided in a lower part (near the bottom) of the tank body, an outlet provided in a middle part or a part slightly above the middle part of a side face of the tank body, a receiving tank communicating with the tank body via the outlet, a stirring device provided in the tank body, a trough for extracting treated water provided in an upper part of the tank body, a sludge discharge port through which concentrated sludge is extracted from a lower part of the receiving tank, and so forth. A stirring member is provided below the distributor.

公开(公告)号：US20150273362A1

公开(公告)日：2015-10-01

申请号：US14441381

申请日：2013-11-18

Applicant: KURITA WATER INDUSTRIES LTD.

Inventor： Satoshi Shimizu ,  Mitsuharu Terashima

IPC: B01D21/24 ,  B01D21/00

CPC classification number: B01D21/2405 ,  B01D21/0087 ,  B01D21/06 ,  B01D21/08 ,  B01D21/14 ,  B01D21/24 ,  B01D21/2416 ,  B01D21/286 ,  B01D21/30 ,  B01J4/00 ,  C02F1/006 ,  C02F2001/007

Abstract: Provided are a distributor capable of feeding a liquid in a state of evenly flowing out from an entire opening while avoiding the opening from being blocked by sludge and keeping a pressure loss small, a settling tank that employs the distributor, and a method for operating the settling tank. A distributor 10 being in the form of a rectangular frame and having straight tubular sides 11 to 14 is disposed in a lower space within a settling tank 1. A liquid outlet opening 16 extending in a lengthwise direction of the distributor 10 is formed in a bottom surface of the distributor 10. An open angle θ of the opening 16 with respect to a tube axis is 60 to 180°, and preferably 90 to 150°.

Abstract translation: 提供一种分配器，其能够在从整个开口均匀地流出的状态下供给液体，同时避免开口被污泥阻塞并保持压力损失小，使用分配器的沉降罐，以及操作该方法 沉淀池 呈矩形框架形式并具有直管状侧面11至14的分配器10设置在沉降槽1内的下部空间中。沿着分配器10的长度方向延伸的液体出口16形成在底部 分配器10的表面。开角度＆amp; 开口16相对于管轴为60〜180°，优选为90〜150°。

公开(公告)号：US09403705B2

公开(公告)日：2016-08-02

申请号：US14423880

申请日：2013-09-03

Applicant: KURITA WATER INDUSTRIES LTD.

Inventor： Satoshi Shimizu ,  Mitsuharu Terashima

IPC: C02F1/56 ,  B01D21/06 ,  C02F1/52 ,  C02F1/00 ,  C02F101/10 ,  C02F101/14 ,  C02F101/20 ,  C02F103/00 ,  C02F103/16

CPC classification number: C02F1/56 ,  B01D21/06 ,  C02F1/5236 ,  C02F2001/007 ,  C02F2101/105 ,  C02F2101/14 ,  C02F2101/20 ,  C02F2103/001 ,  C02F2103/007 ,  C02F2103/16

Abstract: In a water treatment method and an apparatus therefor, after an anionic polymer flocculant is added to water to be treated, granulation is performed by stirring, and solid-liquid separation is then performed to obtain treated water, and flocs which are not disintegrated by a shearing force during stirring and have a preferable settling property can be formed, so that the quality of treated water is also improved. Particularly, a water treatment method includes a flocculating step of adding an anionic polymer flocculant to water to be treated to form flocculated flocs, a subsequent granulating step of stirring the water to be treated to granulate the flocculated flocs, and a solid-liquid separation step of performing solid-liquid separation of generated granulated substances, wherein a cationic polymer flocculant having a cationic group rate of 10 to 50 mole % is added to the water to be treated before the anionic polymer flocculant is added.

Abstract translation: 在水处理方法及其设备中，将阴离子聚合物絮凝剂加入待处理的水中后，通过搅拌进行造粒，然后进行固液分离，得到处理后的水，并且不会被分解的絮凝物 可以形成搅拌时的剪切力，并且可以形成优选的沉降性，从而也提高了处理水的质量。 特别地，水处理方法包括将阴离子聚合物絮凝剂添加到待处理水中以形成絮凝絮凝物的絮凝步骤，随后的制粒步骤，搅拌待处理的水以使絮凝的絮状物颗粒化;以及固液分离步骤 在添加阴离子聚合物絮凝剂之前，将所得的造粒物质进行固液分离，其中将阳离子基团率为10〜50摩尔％的阳离子性聚合物絮凝剂加入待处理的水中。

公开(公告)号：US20150197435A1

公开(公告)日：2015-07-16

申请号：US14423880

申请日：2013-09-03

Applicant: KURITA WATER INDUSTRIES LTD.

Inventor： Satoshi Shimizu ,  Mitsuharu Terashima

IPC: C02F1/56

CPC classification number: C02F1/56 ,  B01D21/06 ,  C02F1/5236 ,  C02F2001/007 ,  C02F2101/105 ,  C02F2101/14 ,  C02F2101/20 ,  C02F2103/001 ,  C02F2103/007 ,  C02F2103/16

Abstract: In a water treatment method and an apparatus therefor, after an anionic polymer flocculant is added to water to be treated, granulation is performed by stirring, and solid-liquid separation is then performed to obtain treated water, and flocs which are not disintegrated by a shearing force during stirring and have a preferable settling property can be formed, so that the quality of treated water is also improved. Particularly, a water treatment method includes a flocculating step of adding an anionic polymer flocculant to water to be treated to form flocculated flocs, a subsequent granulating step of stirring the water to be treated to granulate the flocculated flocs, and a solid-liquid separation step of performing solid-liquid separation of generated granulated substances, wherein a cationic polymer flocculant having a cationic group rate of 10 to 50 mole % is added to the water to be treated before the anionic polymer flocculant is added.

Abstract translation: 在水处理方法及其设备中，将阴离子聚合物絮凝剂加入待处理的水中后，通过搅拌进行造粒，然后进行固液分离，得到处理后的水，并且不会被分解的絮凝物 可以形成搅拌时的剪切力，并且可以形成优选的沉降性，从而也提高了处理水的质量。 特别地，水处理方法包括将阴离子聚合物絮凝剂添加到待处理水中以形成絮凝絮凝物的絮凝步骤，随后的制粒步骤，搅拌待处理的水以使絮凝的絮状物颗粒化;以及固液分离步骤 在添加阴离子聚合物絮凝剂之前，将所得的造粒物质进行固液分离，其中将阳离子基团率为10〜50摩尔％的阳离子性聚合物絮凝剂加入待处理的水中。