C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 3/02 (2006.01)
Patent
CA 2505424
Sequencing Batch Reactor (SBR) is an aerobic biological treatment system to remove the organic pollutants e.g. Bio Chemical Oxygen Demand, Chemical Oxygen Demand, together with other pollutants such as Total Suspended Solids (TSS) and Nutrients (Nitrogen and Phosphorous) from municipal and industrial wastewater in a batch process. The process is an adaptation of extended aeration where all of the processes of extended aeration are conducted in the same tank, i.e. introduction of raw wastewater, aeration, solids separation by settlement and final effluent evacuation (decantation). A key component of the process is the decanter device used for effluent evacuation (decantation). The decanter is the electro - mechanical equipment used to remove (decant) the clear wastewater from the SBR tank after filling, aerating and settling. Decanting the clear wastewater without disturbing the settled solids in the SBR frank is a key process element in the optimum operation of SBR. In order to maintain uniform withdrawal of settlement water (effluent), water is withdrawn across a longitudinal weir to eliminate vortexing and hydraulic short-circuiting, which can cause disturbance of the settled sludge blanket and allow ingress of suspended solids into the evacuated effluent. The method of driving this longitudinal weir into the settled effluent is critical to prevent any lateral or down ward movement and vertical speed fluctuation. The weir must descend in a perfectly level manner at as near uniform speed as possible. The following claims and design of the drive linkage mechanism achieve this. Comparing the earlier swing type decanter design with new swing type decanter design. The new swing type decanter designs have the following advantages. 1) Reduce the maximum load Torque max with new design <75% Torque max with earlier design 2) Reduce the Vertical speed fluctuation during the travel Differential speed in new design =Speed max - Speed max <30% Speed max Differential speed in earlier design = Speed max - Speed max >40% Speed max 3) Less Bending Moment on the Frame and less load and bending on the bearings and seats. Small cantilever design makes less bending moment on the drive-mounting frame so it needs less material to build than the earlier design. 4) Easy service to the drive and limit switches Due to the mounting place of the drive (motor and actuator) close to SBR tank wall, it is easy to access the drive location making it convenient for to service. The limit switches' location is completely off the SBR tank wall and it is easy to install, adjust, replace and maintain.
Na
Otton Murray J. T.
Wenlei Ding
LandOfFree
Decanter linkages arms and limit switches does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Decanter linkages arms and limit switches, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decanter linkages arms and limit switches will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1597480