Tsurumi Manufacturing Co.

Tsurumi, Japan

Tsurumi Manufacturing Co.

Tsurumi, Japan

Time filter

Source Type

Chen X.,Ehime University | Fujiwara T.,Ehime University | Ohtoshi K.,Kochi University | Inamori S.,Tsurumi Manufacturing Co. | And 2 more authors.
Water Science and Technology | Year: 2010

A novel oxidation ditch system using anaerobic tanks and innovative dual dissolved oxygen (DO) control technology is proposed for biological nitrogen and phosphorus removal from domestic sewage. A continuous bench-scale experiment running for more than 300 days was performed to evaluate the system. Monitoring and controlling the airflow and recirculation flow rate independently using DO values at two points along the ditch permitted maintenance of aerobic and anoxic zone ratios of around 0.30 and 0.50, respectively. The ability to optimize aerobic and anoxic zone ratios using the dual DO control technology meant that a total nitrogen removal efficiency of 83.2-92.9% could be maintained. This remarkable nitrogen removal performance minimized the nitrate recycle to anaerobic tanks inhibiting the phosphorus release. Hence, the total phosphorus removal efficiency was also improved and ranged within 72.6-88.0%. These results demonstrated that stabilization of the aerobic and anoxic zone ratio by dual DO control technology not only resulted in a marked improvement of nitrogen removal, but it also enhanced phosphorus removal. © IWA Publishing 2010.


Kakuda K.,Nihon University | Nagashima T.,Nihon University | Hayashi Y.,Nihon University | Obara S.,Nihon University | And 4 more authors.
CMES - Computer Modeling in Engineering and Sciences | Year: 2012

An acceleration of the particle-based incompressible fluid flow simulations on GPU using CUDA is presented. The particle method is based on the MPS (Moving Particle Semi-implicit) scheme using logarithmic-type weighting function to stabilize the spurious oscillatory solutions for the pressure fields which are governed by Poisson equation. The standard MPS scheme is widely utilized as a particle strategy for the free surface flow, the problem of moving boundary, multi-physics/multi-scale ones, and so forth. Numerical results demonstrate the workability and the validity of the present approach through dam-breaking flow problem. Copyright © 2012 Tech Science Press.


Kakuda K.,Nihon University | Nagashima T.,Nihon University | Hayashi Y.,Nihon University | Obara S.,Nihon University | And 5 more authors.
CMES - Computer Modeling in Engineering and Sciences | Year: 2013

The application of a GPU-based particle method to three-dimensional incompressible viscous fluid flow problems is presented. The particle approach is based on the MPS (Moving Particle Semi-implicit) scheme using logarithmic weighting function to stabilize the spurious oscillatory solutions for solving the Poisson equation with respect to the pressure fields by using GPU-based SCG (Scaled Conjugate Gradient) method. Numerical results demonstrate the workability and the validity of the present approach through the dam-breaking flow problem and flow behavior in a liquid ring pump with rotating impeller blades. Copyright © 2013 Tech Science Press.


Kakuda K.,Nihon University | Ushiyama Y.,Nihon University | Obara S.,Nihon University | Toyotani J.,Nihon University | And 3 more authors.
CMES - Computer Modeling in Engineering and Sciences | Year: 2010

The application of the MPS (Moving Particle Semi-implicit) scheme to incompressible viscous fluid flow problem in the liquid ring vacuum pump with rotating impeller is presented. The rotating impeller in the pump is attached to a center hub and located in off-set from the center of a cylindrical body. For such flow problem there are some interesting phenomena including the formation of the liquid ring by rotating impeller, the interface dynamics between gas and liquid, and so forth. The MPS scheme is widely utilized as a particle strategy for the free surface flow, the problem of moving boundary, and multi-physics/multi-scale ones. Numerical results demonstrate the workability and the validity of the present approach through incompressible viscous fluid flow in the pump with rotating impeller blades. Copyright © 2010 Tech Science Press.


Patent
Tsurumi Manufacturing Co. | Date: 2015-06-17

The solid-liquid components separator includes layered rotary filter units It arranged inside a treatment tank 9. Each layered rotary filter unit It includes a plurality of projection-equipped disk filter pieces 5 having back surfaces and end faces of projections 5t abutting each other to form filter grooves S. To alternately arrange large-diameter disk filter pieces 2 and small-diameter disk filter pieces 3 in the respective filter grooves S, the filter pieces 5, 2, 3 with different diameters are stacked sequentially on an outer periphery of a rotary shaft 4 inserted therethrough. Outer circumferential edge of the large-diameter disk filter pieces 2 of one of the rotary filter units It is disposed close to the projections 5t and outer circumferential edges of the small-diameter filter pieces 3 in the respective filter grooves S of another rotary filter unit It. The large-diameter filter piece 2 and small-diameter filter piece 3 are oscillated in the axial direction inside the filter grooves S and are configured to rotate synchronously with the rotary shaft 4.


Trademark
Tsurumi Manufacturing Co. | Date: 2010-09-28

Hydraulic machinery and tools, namely, liquid pumps; submersible pumps; non-submersible pumps for liquids, sludge, mud, or sand; electric pumps for liquids, sludge, mud, or sand; engine driven pumps for liquids, sludge, mud, or sand; utility pumps for liquids, sludge, mud, or sand; centrifugal pumps for liquids, sludge, mud, or sand; trash pumps, diaphragm pumps for liquids, sludge, mud, or sand; drainage pumps; sand pumps; dewatering pumps for removing liquids, sludge, mud, or sand from underground; irrigation pumps; electric motors and engines for driving liquid pumps.


Patent
Tsurumi Manufacturing Co. | Date: 2010-07-21

[Object] To provide a submersible aerator which can improve its aeration action, reduce load at the time of startup, prevent clogging by foreign objects, reduce maintenance work, and lower production and running costs. [Means for solution] An impeller 4 including blades 4 having partition walls which separate liquid passages 4w and air passages 4a is accommodated within a guide casing 6 for rotation between a lower surface 5d of an intermediate plate having an air suction opening 5s and an upper surface 7u of a suction cover having a liquid suction opening 7s. The liquid passages 4w and the air passages 4a meet through communication portions 4h at radially outer ends of rear-side blade partition walls 4r. Intermediate blades 4m are provided at radially outer ends of the liquid passages 4w. A conical space is defined between the blade lower end surfaces 4d and the suction cover upper surface 7u such that the space, which is wide at a portion adjacent to the liquid suction opening 7s, becomes narrower toward a radially outward region including guide vane tongues. A plurality of support legs 8 and a plurality of straining projections 9 are integrally formed on the lower surface of a peripheral portion of a bottom wall 6d of the guide casing. Sloping surfaces are provided on the top wall upper surface 6o between air-liquid discharge passages such that the sloping surfaces are inclined downward and increase in width in the radially outward direction.

Loading Tsurumi Manufacturing Co. collaborators
Loading Tsurumi Manufacturing Co. collaborators