公开(公告)号：JPH08309111A

公开(公告)日：1996-11-26

申请号：JP14545495

申请日：1995-05-18

Applicant: TORAY INDUSTRIES

Inventor： SENDA TERUO ,  FUJITANI KENICHI ,  DATE TAMOTSU

IPC: B01D25/30 ,  B01D25/32 ,  B01D36/02

Abstract: PURPOSE: To uniformly place a muddy solid-liquid mixture flowing down from a flowing-down plate on filter cloth and to smoothly progress solid-liquid separating treatment by forming the flowing-down plate into descending slope toward the circumferential direction of the filter cloth and also downward curving the flowing-down plate and forming a solid-liquid guiding face projected upward in the width direction of the filter cloth. CONSTITUTION: In a flowing-down plate 42, a sludge flowing part 51 continues in such a shape that it is connected to the tip of a narrow sludge introduction part 50. The flowing face of the sludge flowing part 51 is formed into a sectoral shape widened toward the traveling direction of filter cloth 2. The whole is formed into descending slope along the traveling direction of the filter cloth 2 and also the center is high along the width direction of the filter cloth 2 and the sludge flowing part is formed into descending slope toward both sides. Therefore, sludge supplied to the sludge introduction part 50 flows down on the flowing face of the sludge flowing part 51 along two directions of the traveling direction and th width direction of the filter cloth 2 and is fully broadened and then flows down on the filter cloth 2. As a result, sludge is uniformly placed on the filter cloth 2.

公开(公告)号：JP2001104722A

公开(公告)日：2001-04-17

申请号：JP28409699

申请日：1999-10-05

Applicant: TORAY INDUSTRIES

Inventor： DATE TAMOTSU ,  SENDA TERUO ,  FUJITANI KENICHI

IPC: B01D33/04 ,  B01D24/38 ,  B01D33/70 ,  B30B9/24

Abstract: PROBLEM TO BE SOLVED: To provide a solid-liquid separation apparatus enhancing the recovery of a solid component and high in the stability of treatment capacity. SOLUTION: This solid-liquid separation apparatus is equipped with filter cloth provided so as to freely run in one direction, a solid-liquid supply means for supplying a solid-liquid to the filter cloth, a dehydration means dehydrating the solid component filtered by the filter cloth under pressure to form a cake and transferring the cake to a transfer drum, a first recovery means for recovering the cake transferred to the transfer drum and a second recovery means provided on the downstream side of the transfer drum in the filter cloth running direction and recovering the cake remaining on the filter cloth.

公开(公告)号：JP2000262818A

公开(公告)日：2000-09-26

申请号：JP6844199

申请日：1999-03-15

Applicant: TORAY INDUSTRIES

Inventor： SENDA TERUO ,  FUJITANI KENICHI ,  DATE TAMOTSU ,  KATO HIROYASU

IPC: B01D33/06

Abstract: PROBLEM TO BE SOLVED: To provide a solid-liquid separation method and a solid-liquid separation apparatus with which solid matter separation can economically be carried out at improved precision while prolonging the life of the filter medium in a rotary drum type filtration apparatus in which the filter medium is mounted. SOLUTION: This solid-liquid separation method includes processes of carrying out solid-liquid separation of a raw liquid by passing the raw liquid from the outside to the inside while rotating the filtration drum 9 equipped with a filter medium 11, back-washing the filter medium 11 by jetting washing water from the rear side, and front-washing the filter medium 11 from the front side. In the method, at least the washing from the front side is carried out and stopped corresponding to the water level in the drum. This apparatus is provided with a rotation filtration drum 9 equipped with the filter medium 11, a back- washing means for jetting washing water from the rear side of the filter medium 11, a front-washing means for jetting washing water from the front side of the filter medium 11, and a switching control means for operating or stopping at least the front-washing means corresponding to the water level in the filtration drum 9.

公开(公告)号：JPH08309115A

公开(公告)日：1996-11-26

申请号：JP14545195

申请日：1995-05-18

Applicant: TORAY INDUSTRIES

Inventor： SENDA TERUO ,  FUJITANI KENICHI ,  YASUDA HARUHIKO

IPC: B01D29/00 ,  B01D25/32 ,  B01D36/02

Abstract: PURPOSE: To provide a practical solid-liquid separation device in which bulge of sludge is suppressed and transferability is excellent and also throughput capacity per unit time is increased. CONSTITUTION: This solid-liquid separation device is equipped with an endless filter medium sheet 2 and both a transfer roll 3 and a driving roll 4 which are provided by pinching the filter medium sheet 2. The filter medium sheet 2 is turned and traveled according to rotation of both rolls. The filter medium sheet 2 is traveled while placing a muddy solid-liquid mixture thereon, and solid-liquid separation is performed by suction dewatering and compression dewatering of the solid-liquid mixture and solid substance is transferred on the transfer roll 3. Rotation of a motor 5 is directly transmitted to the transfer roll 3 and indirectly transmitted to the driving roll 4 through annular power mechanisms 21, 22. The delivery side sprocket of the annular power transfer mechanism 22 is fitted in such position as a straight line joining the center of the driving roll 4 to the center of the sprocket is made nearly parallel to a tangent line passing through the contact point of the transfer roll 3 and the driving roll 4.

公开(公告)号：JP2001025762A

公开(公告)日：2001-01-30

申请号：JP19759799

申请日：1999-07-12

Applicant: TORAY INDUSTRIES

Inventor： FUJITANI KENICHI ,  SENDA TERUO ,  DATE TAMOTSU

IPC: B01D33/04 ,  C02F1/00 ,  C02F1/24

Abstract: PROBLEM TO BE SOLVED: To prevent breaking of a flocculated particle size of a suspended material and enhance a recovery rate in a dewatering machine by introducing scum formed in a floatation apparatus for forming scum by floating the suspended material by dissolved air to the filter cloth running type dewatering machine under natural flow. SOLUTION: Pressurized water is supplied to a floating separation processing tank 3 by a compressing pump 2 of a floatation apparatus 5 to form fine bubbles of dissolved air and the bubbles having SS adhered to circumference of them is floated up to the water surface to form scum. Floated scum is scraped up by a scraper 14. A flocculation reaction tank 4 for flocculating the suspended material by adding a flocculating agent is provided on the upstream side of the floatation apparatus 5. An outlet hopper 11 of a scum supplying means 6 supplies scum separated from treated water in the floatation apparatus to the downstream side while keeping a constant thickness of the scum and an inclined plate 12 slide down the scum supplied from the outlet hopper 11. A dewatered cake tank 10 for storing dewatered cake is provided on the downstream side of a filter cloth running type dewaterer 9.

公开(公告)号：JP2000279715A

公开(公告)日：2000-10-10

申请号：JP8626999

申请日：1999-03-29

Applicant: TORAY INDUSTRIES

Inventor： FUJITANI KENICHI ,  SENDA TERUO

IPC: B01D33/58 ,  B01D33/04 ,  B01D33/80 ,  C02F11/12

Abstract: PROBLEM TO BE SOLVED: To surely prevent the clogging of a nozzle and filter cloth and to stabilize the separation and dehydration treatment capability of a solid component and liquid component by equipping the apparatus with a filter cloth washing means having the self-washing type nozzle and a washing fluid supplying means which is capable of intermittently changing the supply pressure of the washing fluid to the self-washing type nozzle. SOLUTION: The filter cloth 2 is circumferentially rotated by a drive roll 3 and a pressure reduction vessel 6 is internally decompressed by a pressure reduction blower 14. The original liquid supplied to a original liquid supply vessel 5 is forcibly sucked to the pressure reduction suction vessel 6 side via the filter cloth 2 to suck the liquid component in the original liquid by the pressure reduction suction vessel 6. The solid component is captured by the filter cloth. The liquid component is once stored in a sealing vessel 10. On the other hand, the solid component is transferred together with the filter cloth 2 to a pressure dehydrating means consisting of a metallic drum 7, a pressure roll 8, etc., and is transferred to the metallic drum 7 side, following which the solid component is scraped by a scraper 9 and is dropped to a cake receiving vessel 17. The surfaces of the filter cloth 2 are thereafter washed by the washing means 3 having the self-washing type nozzle.