The innovative cam-scotch-yoke electric motor system operates above the tank.
The shaft transfers the up-and-down motion to the hydro-disk.
The hydro-disk is the heart of the mixing process, producing 100% axial mixing through momentum exchange.
The energized currents continually flow, eliminating surface scum and floor sediment.
The oscillating velocity and pressure waves enhance mass transfer to produce a homogeneous mixture.
The CFD process allows for:
|Overall tank height (ft)||52||Cylindrical tank plus bottom|
|Maximum sludge elevation (ft)||38||From bottom of cylinder|
|Conical height (ft)||8.5||From bottom apex|
|Cylindrical height (ft)||40||Total wall height|
|Maximum tank capacity (gal)||2,000,000||Sludge bulk volume|
|Sludge inlet diameter (in)||(2) 6”Ø||TWAS & thickened PS lines|
|Sludge Inlet Pipe Elevation above bottom wall (ft)||8||Changed from 16.11 ft|
|Sludge outlet diameter (in)||6”Ø||-|
|Sludge outlet pipe elevation (ft)||2162.5||12.5 below bottom of the wall|
|Bulk density (kg/m3)||1,034.2||Typical value|
|Sludge flow rate (gpm)||92.6||Estimated|
|Density (kg/m3)||2,650||Grit particles (worst case)|
|Solids content (% wt)||3.5||Average grit and organics|
|Solids particle size (μm)||100-150||Typical grit size (worst case)|
|Bulk density (kg/m3)||1,034.2||Same as sludge|
|Viscosity (cP))||265||Same as sludge|
|Concentration (mg/L)||7.5||Lithium Chloride solution|
|Flow rate (kg/s)||3.48||-|
|Injection duration (s)||15||-|
|Elevation of injection location (ft)||8||At sludge intake|
|Point 1||Circulated sludge out, elevation(ft)||2175.5||Radial distance 44.5 ft|
|Point 2||Primary sludge out, bottom cone (ft)||2163||Tank axis|
|Point 3||Sampling port 1 elevation (ft)||2212.5||Radial distance 40 ft|
|Point 4||Sampling port 1 elevation (ft)||2198.5||Radial distance 40 ft|
|Point 5||Sampling port 1 elevation (ft)||2176.5||Radial distance 40 ft|
|Point 6||Sampling port 2 elevation (ft)||2212.5||Radial distance 10 ft|
|Point 7||Sampling port 2 elevation (ft)||2198.5||Radial distance 10 ft|
|Point 8||Sampling port 2 elevation (ft)||2176.5||Radial distance 10 ft|
|Outer diameter (in)||96||-|
|Inner diameter (in)||64||-|
|Stroke length (in)||20||Changed from 16 inch|
|Oscillating frequency (cpm)||32||Changed from 30 cpm|
|Bottom of stroke location (ft)||20||Above bottom tank cone|
Two-dimensional view across a vertical plane parallel to the sludge intake. Zones of highest velocity (max 0.86 m/s) correspond to the hydro-disk location. The average tank (bulk) velocity is about 0.012 m/s and is distributed nearly uniform in the whole tank. This uniform velocity creates isotropic turbulence resulting in uniform mixing when coupled with oscillating pressure waves.
Two-dimensional view across a vertical plane at 5 meter high from tank bottom. The velocity is clipped at 0.012 m/s which corresponds to the tank mean (bulk) velocity. The flow pattern indicates that the mean velocity is uniformly distributed across the tank diameter, consequently providing uniform mixing of the whole tank.