PROJECT HIGHLIGHTS
Has a small footprint, cost less to maintain, produces water that can be reused without restriction.”
DESCRIPTION
Nestled in a valley between the Pukalani Country Club’s golf course and a surrounding residential community, you will find the Pukalani MBR Water Reuse Facility. It is a state‐of‐the‐art membrane bioreactor system (MBR) producing R‐1 water that is reused to irrigate an award‐winning golf course. Tom Johnson, Plant Manager, oversees the entire facility. The plant was designed to far exceed Hawaii’s R‐1 water reuse limits. Although there are no nitrogen limits on the island, the MBR is designed to meet a total nitrogen effluent of less than 10 mg/L. Aside from the great quality effluent, Tom has seen other benefits from his new MBR. It has improved the efficiency of his belt filter press (producing 17%‐18% cake), dropped his polymer use and hauling cost by 50%
LOCATION
Pukalani, HI
IMAGES
PROJECT OVERVIEW
| System Type(s) | Enviroquip ® MBR |
|---|---|
| Previous Facility Type | CAS, Package Plant |
| Owner | Hawaii Water Service Company |
| Engineer | Water Works Engineers |
| Contractor | Bodell Construction |
| Operations | Hawaii Water Service Company |
| Delivery Method | Negotiation, Pre-Purchae |
| Time To Retrofit | 10 months |
| Total Installed Project Cost | $8,300,000 |
PLANT DESIGN INFORMATION
| Fine Screen Type | Bar Screen |
|---|---|
| Aperture or Slot Size | 2 mm |
| Supplemental Aeration Technology | Fine Bubble, Tubes |
| MBR Blower Type | Positive Displacement |
| Solids Management Data | Belt Press |
| SCADA System | Wonderware |
| Disinfection Method | UV |
| # Process Stages | 3 |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | PAG (Pump Assited Gravity) |
|---|---|
| # of Reactors : | 2 |
| Submerged Membrane Unit (SMU) | RM200, KUBOTA® |
| # SMU | 6 |
| Design Flux (MMF) | 12.3 gfd |
| Minimum Temperature | 20°C |
| Peak Factor | 2.0 |
| # of Maintenance Cleans | 4 |
