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Western PWOC Meeting
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10/25/2018
When: October 25, 2018
Where: Lake Rhodhiss Wastewater Treatment Facility
2100 Lake Rhodhiss Drive
Valdese, North Carolina  28690
United States
Contact: NC AWWA-WEA
919-784-9030

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The next meeting of the Western Section of the Professional Wastewater Operators Committee will be held Thursday, October 25, 2018 and will be hosted by the Town of Valdese and the Lake Rhodhiss Wastewater Treatment Facility. This is an open meeting, and membership is not required to attend.  Please share the agenda with others who may be interested. 

 

        Lunch and Technical Presentation:                      Plant Tour:                                                                                                         

         100 Main Restaurant                                               Lake Rhodhiss Wastewater Treatment Facility        

         100 Main Street East                                                2100 Lake Rhodhiss Drive                                                          

         Valdese NC, 28690                                                    Valdese, N.C. 28690

         (828) 874-0404                                                          (828) 879-2131

 

The Lake Rhodhiss Wastewater Treatment Facility began operations in 1982.   The facility has the capacity to treat 7.5 MDG and treats an average daily flow of 2.0 MGD.  The treatment process begins with the removal of screenings (large material and rags).  Next, grit and sand are removed before the wastewater is pumped to the to the primary clarifiers.  After the primaries, the wastewater stream goes to two aeration basins.  Each aeration basin uses three mechanical aerators to provide oxygen and mixing of the wastewater.

 

From the aeration basins, the flow goes to the secondary clarifiers for further treatment.  Chlorine is added at the secondary clarifiers at the weirs just prior to discharge for disinfection.  The flow continues to the contact chambers where sulfur dioxide is used to remove the chlorine before being discharged into Lake Rhodhiss—part of the Catawba River Basin.  Solids are then pumped to one of two aerated thickeners to increase the concentration of the solids.  Solids are then centrifuged before being mixed with wood chips to create compost.

 

The Town with design assistance from McGill Associates just completed a project to replace the old chain and bucket grit system with a more reliable and efficient vortex grit removal system by WesTech. The project’s scope also included replacement of the existing 1-inch bar racks with tighter ½-inch racks and rake arms.

 

The technical presentation will cover the project’s life from cradle to grave, touching on the initial industrial customer expansion, preliminary design, funding applications, survey elements, the design process and considerations of compatibility with the existing operational wastewater plant, equipment selection and implementation.  RJ Mozeley, PE with McGill Associates and Mike Knight with ClearWater Inc will present.

 

Program Schedule

Lunch: 11:45 a.m.—12:45 p.m.

                   Technical Session:  12:45 p.m.—1:45 p.m.

    Plant Tour:  2:00 p.m.—3:00 p.m.

 

Two contact hours for wastewater operators will be awarded to those attendees who participate in the Technical Session and the Tour (partial credit cannot be given).   Please call Clark Fields at (828) 301-7255 or Jonathan Jordan at (704) 860-1417 with any questions.

 

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